Evaluation

Distribution by Scientific Domains
Distribution within Medical Sciences

Kinds of Evaluation

  • accurate evaluation
  • activity evaluation
  • additional evaluation
  • adequate evaluation
  • analytical evaluation
  • and evaluation
  • antibacterial evaluation
  • antimicrobial evaluation
  • appropriate evaluation
  • audiometric evaluation
  • automatic evaluation
  • baseline evaluation
  • biochemical evaluation
  • biological evaluation
  • blinded evaluation
  • candidate evaluation
  • capacity evaluation
  • cardiac evaluation
  • care evaluation
  • careful evaluation
  • child custody evaluation
  • chromatographic evaluation
  • chronic health evaluation
  • clinical evaluation
  • cognitive evaluation
  • comparative evaluation
  • complete evaluation
  • comprehensive evaluation
  • consumer evaluation
  • controlled evaluation
  • cost evaluation
  • course evaluation
  • critical evaluation
  • cross-sectional evaluation
  • current evaluation
  • custody evaluation
  • cytogenetic evaluation
  • cytologic evaluation
  • cytometric evaluation
  • cytotoxic evaluation
  • cytotoxicity evaluation
  • data evaluation
  • detailed evaluation
  • diagnostic evaluation
  • direct evaluation
  • donor evaluation
  • drug safety evaluation
  • early evaluation
  • echocardiographic evaluation
  • economic evaluation
  • efficacy evaluation
  • efficient evaluation
  • electrodiagnostic evaluation
  • electrophysiological evaluation
  • empirical evaluation
  • endocrine evaluation
  • endoscopic evaluation
  • energy evaluation
  • ethical evaluation
  • exact evaluation
  • experimental evaluation
  • expert evaluation
  • extensive evaluation
  • external evaluation
  • fast evaluation
  • fatigue evaluation
  • fibrosis evaluation
  • field evaluation
  • final evaluation
  • first evaluation
  • follow-up evaluation
  • forecast evaluation
  • formal evaluation
  • formative evaluation
  • full evaluation
  • function evaluation
  • functional evaluation
  • future evaluation
  • general evaluation
  • genetic evaluation
  • global evaluation
  • good evaluation
  • group evaluation
  • health evaluation
  • histologic evaluation
  • histological evaluation
  • histometric evaluation
  • histomorphometric evaluation
  • histopathologic evaluation
  • histopathological evaluation
  • imaging evaluation
  • immunohistochemical evaluation
  • immunological evaluation
  • impact evaluation
  • in-vitro evaluation
  • independent evaluation
  • initial evaluation
  • instrumental evaluation
  • joint evaluation
  • kinetic evaluation
  • laboratory evaluation
  • last evaluation
  • little evaluation
  • long-term evaluation
  • long-term follow-up evaluation
  • longitudinal evaluation
  • meaningful evaluation
  • medical evaluation
  • metabolic evaluation
  • microbiologic evaluation
  • microscopic evaluation
  • model evaluation
  • molecular evaluation
  • month evaluation
  • moral evaluation
  • morphological evaluation
  • morphometric evaluation
  • mri evaluation
  • multi-criteria evaluation
  • national evaluation
  • negative evaluation
  • neurologic evaluation
  • neurological evaluation
  • neurophysiological evaluation
  • neuropsychological evaluation
  • node evaluation
  • non-invasive evaluation
  • noninvasive evaluation
  • numerical evaluation
  • nutritional evaluation
  • objective evaluation
  • ongoing evaluation
  • ophthalmic evaluation
  • outcome evaluation
  • outpatient evaluation
  • own evaluation
  • parent evaluation
  • participant evaluation
  • pathologic evaluation
  • pathological evaluation
  • patient evaluation
  • pattern evaluation
  • pediatric evaluation
  • peer evaluation
  • perceptual evaluation
  • performance evaluation
  • periodic evaluation
  • pharmacological evaluation
  • physician evaluation
  • pilot evaluation
  • policy evaluation
  • positive evaluation
  • postoperative evaluation
  • precise evaluation
  • preclinical evaluation
  • preliminary biological evaluation
  • preliminary evaluation
  • preoperative evaluation
  • present evaluation
  • presurgical evaluation
  • pretransplant evaluation
  • previous evaluation
  • primary care evaluation
  • probabilistic evaluation
  • process evaluation
  • product evaluation
  • prognostic evaluation
  • program evaluation
  • programme evaluation
  • project evaluation
  • proper evaluation
  • prospective evaluation
  • psychiatric evaluation
  • psychological evaluation
  • psychometric evaluation
  • psychosocial evaluation
  • qualitative evaluation
  • quality evaluation
  • quantitative evaluation
  • radiographic evaluation
  • radiologic evaluation
  • radiological evaluation
  • randomized evaluation
  • rapid evaluation
  • real-time evaluation
  • realistic evaluation
  • recent evaluation
  • regular evaluation
  • relative performance evaluation
  • reliability evaluation
  • reliable evaluation
  • research evaluation
  • response evaluation
  • retrospective evaluation
  • rigorous evaluation
  • risk evaluation
  • routine evaluation
  • safety evaluation
  • scientific evaluation
  • second evaluation
  • sem evaluation
  • sensory evaluation
  • separate evaluation
  • service evaluation
  • simultaneous evaluation
  • social evaluation
  • sonographic evaluation
  • statistical evaluation
  • structural evaluation
  • student evaluation
  • subjective evaluation
  • subsequent evaluation
  • summative evaluation
  • supplier evaluation
  • surgical evaluation
  • system evaluation
  • systematic evaluation
  • systemic evaluation
  • teacher evaluation
  • technical evaluation
  • test evaluation
  • their evaluation
  • theoretical evaluation
  • therapy evaluation
  • thorough evaluation
  • toxicity evaluation
  • toxicological evaluation
  • training evaluation
  • transplant evaluation
  • transplantation evaluation
  • treatment evaluation
  • ultrasonographic evaluation
  • ultrasound evaluation
  • ultrastructural evaluation
  • urodynamic evaluation
  • visual evaluation
  • vitro evaluation
  • vivo evaluation
  • voice evaluation

  • Terms modified by Evaluation

  • evaluation activity
  • evaluation algorithm
  • evaluation approach
  • evaluation context
  • evaluation criterioN
  • evaluation criterion
  • evaluation data
  • evaluation design
  • evaluation experiment
  • evaluation finding
  • evaluation form
  • evaluation framework
  • evaluation function
  • evaluation ii
  • evaluation ii score
  • evaluation index
  • evaluation instrument
  • evaluation literature
  • evaluation measure
  • evaluation method
  • evaluation methodology
  • evaluation methods
  • evaluation metric
  • evaluation model
  • evaluation period
  • evaluation phase
  • evaluation plan
  • evaluation practice
  • evaluation procedure
  • evaluation process
  • evaluation program
  • evaluation project
  • evaluation protocol
  • evaluation purpose
  • evaluation question
  • evaluation questionnaire
  • evaluation report
  • evaluation research
  • evaluation result
  • evaluation scale
  • evaluation score
  • evaluation shows
  • evaluation strategy
  • evaluation studies
  • evaluation study
  • evaluation system
  • evaluation task
  • evaluation technique
  • evaluation techniques
  • evaluation test
  • evaluation theory
  • evaluation time
  • evaluation tool
  • evaluation trials

  • Selected Abstracts


    PRISONER REENTRY: BEYOND PROGRAM EVALUATION

    CRIMINOLOGY AND PUBLIC POLICY, Issue 2 2006
    JAMES P. LYNCH
    First page of article [source]


    5 DIAGNOSTIC PITFALLS IN THE ECHOCARDIOGRAPHIC EVALUATION OF HYPERTROPHIC OBSTRUCTIVE CARDIOMYOPATHY (HOCM) REFERRED FOR CATHETER INTERVENTIONAL THERAPY

    ECHOCARDIOGRAPHY, Issue 1 2004
    G. Beer
    Introduction: Generally, the diagnosis of typical HOCM with subaortic obstruction and a dynamic pressure gradient across the left ventricular outflow tract is made by noninvasive diagnostic procedures with great certainty by employing transthoracic (TTE) and/or transoesophageal (TEE) echocardiography. However, in patients with asymmetric septal hypertrophy pitfalls in echocardiographic examination may arise from several additional diseases as described in casuistic reports. To date systematic investigations in patients referred for catheter interventional therapy of HOCM are lacking. Patients and Methods: Therefore we investigated for the first time in a systematic study 200 symptomatic patients. (180 consecutive and 20 nonconsecutive patients; functional class 3 or 4 according to NYHA) with HOCM who were referred for this new catheter interventional therapy. In all patients TTE, bicycle exercise Doppler echocardiography and multiplane TEE were performed. Results: In 4 of 180 consecutive patients. (2.2%) discrete subvalvular membranous aortic stenosis (DSAS) (3 female patients and 1 male patient; age 20 to 58 years; mean septal diameter 19 mm; Sam-like motion in all 4 patients) was made. In all cases the diagnosis could be confirmed by surgical treatment. TEE evaluation was of crucial importance with demonstration of a typical subvalvular membrane that was situated a few millimeters below the aortic valve. In all cases a typical asymmetric septal hypertrophy mimicking HOCM was seen. Additionally, in 2 patients there was a conincidence of severe symptomatic valvular aortic stenosis and HOCM and in 1 patient a tunnel type of subvalvular aortic stenosis was present. Conclusion: These results show the potential pitfalls in echocardiographic diagnosis of HOCM. Especially, the frequency of DSAS in symptomatic patients referred for HOCM is unexpectedly high (2.2%). Especially in patients in whom TTE is of insufficient quality, investigation employing multiplane TEE with careful evaluation of the small poststenotic subvalvular area in HOCM is of crucial importance. This is of special significance prior to catheter interventional therapy, because in these patients surgical treatment is mandatory. [source]


    AFTER-SCHOOL PROGRAM EFFECTS ON BEHAVIOR: RESULTS FROM THE 21ST CENTURY COMMUNITY LEARNING CENTERS PROGRAM NATIONAL EVALUATION

    ECONOMIC INQUIRY, Issue 1 2008
    SUSANNE JAMES-BURDUMY
    This paper presents evidence on after-school programs' effects on behavior from the national evaluation of the U.S. Department of Education's 21st Century Community Learning Centers after-school program. Findings come from both of the study's components: (1) an elementary school component based on random assignment of 2,308 students in 12 school districts and (2) a middle school component based on a matched comparison design including 4,264 students in 32 districts. Key findings include higher levels of negative behavior for elementary students and some evidence of higher levels of negative behaviors for middle school students. (JEL I21) [source]


    EVALUATION OF ELEVATED PLOIDY AND ASEXUAL REPRODUCTION AS ALTERNATIVE EXPLANATIONS FOR GEOGRAPHIC PARTHENOGENESIS IN EUCYPRIS VIRENS OSTRACODS

    EVOLUTION, Issue 4 2010
    Sofia Adolfsson
    Transitions from sexual to asexual reproduction are often coupled with elevations in ploidy. As a consequence, the importance of ploidy per se for the maintenance and spread of asexual populations is unclear. To examine the effects of ploidy and asexual reproduction as independent determinants of the success of asexual lineages, we sampled diploid sexual, diploid asexual, and triploid asexual Eucypris virens ostracods across a European wide range. Applying nuclear and mitochondrial markers, we found that E. virens consists of genetically highly differentiated diploid sexual populations, to the extent that these sexual clades could be considered as cryptic species. All sexual populations were found in southern Europe and North Africa and we found that both diploid asexual and triploid asexual lineages have originated multiple times from several sexual lineages. Therefore, the asexual lineages show a wide variety of genetic backgrounds and very strong population genetic structure across the wide geographic range. Finally, we found that triploid, but not diploid, asexual clones dominate habitats in northern Europe. The limited distribution of diploid asexual lineages, despite their shared ancestry with triploid asexual lineages, strongly suggests that the wider geographic distribution of triploids is due to elevated ploidy rather than to asexuality. [source]


    NON DESTRUCTIVE EVALUATION OF RESIDUAL STRESSES IN WELDED PLATES USING THE BARKHAUSEN NOISE TECHNIQUE

    EXPERIMENTAL TECHNIQUES, Issue 5 2005
    K. Kesavan
    First page of article [source]


    ANALYTICAL EVALUATION OF THE FEASIBILITY OF SHEAROGRAPHY

    EXPERIMENTAL TECHNIQUES, Issue 1 2002
    A.K. Maji
    First page of article [source]


    A FIELD-TESTING SYSTEM FOR EXPERIMENTAL BRIDGE EVALUATION

    EXPERIMENTAL TECHNIQUES, Issue 6 2001
    D. V. Jáuregui
    First page of article [source]


    NOVEL TECHNIQUE FOR THE EVALUATION OF AIRCRAFT HONEYCOMB SANDWICH STRUCTURES

    EXPERIMENTAL TECHNIQUES, Issue 5 2001
    A. Charon
    First page of article [source]


    MODEL STANDARDS OF PRACTICE FOR CHILD CUSTODY EVALUATION

    FAMILY COURT REVIEW, Issue 1 2007
    Task Force for Model Standards of Practice for Child Custody Evaluation
    First page of article [source]


    EXPLAINING THE UTILIZATION OF RELATIVE PERFORMANCE EVALUATION IN LOCAL GOVERNMENT: A MULTI-THEORETICAL STUDY USING DATA FROM SWEDEN

    FINANCIAL ACCOUNTABILITY & MANAGEMENT, Issue 2 2009
    Tobias Johansson
    One of the more lasting imprints that New Public Management (NPM) has made in the public sector is an increase in the popularity of performance measurement. In Sweden, performance measurement has gained popularity in the public sector, not least at the local government level with the use of relative performance evaluation (RPE). Because utilization of RPE is a decentralized and optional mode of governance, a somewhat heterogeneous practice has evolved. The aim of this paper is to examine the causes of this differentiated practice. We jointly examine economic, political and institutional/cultural explanations in order to account for the utilization of RPE. The empirical material consists of archival data and a questionnaire sent to all Swedish municipalities in late 2005. We show that RPE adoption and use partly has different antecedents and that the institutional/cultural perspective appears to have greater explanatory power than economic and political, not least as a consequence of the potential to explain decoupling and the importance of change facilitating capabilities. The investigation contributes specifically to the literature on the utilization of RPE in local governments and more generally to the literature on why and to what extent management accounting practices are utilized. [source]


    AN EVALUATION OF SURFACE HARDNESS OF NATURAL AND MODIFIED ROCKS USING SCHMIDT HAMMER: STUDY FROM NORTHWESTERN HIMALAYA, INDIA

    GEOGRAFISKA ANNALER SERIES A: PHYSICAL GEOGRAPHY, Issue 3 2009
    VIKRAM GUPTA
    ABSTRACT. Four rock types (quartz mica gneiss, schist, quartzite and calc-silicate) located in the Satluj and Alaknanda valleys were used to test whether a Schmidt hammer can be used to distinguish rock surfaces affected by various natural and man-induced processes like manual smoothing of rock surfaces by grindstone, surface weathering, deep weathering, fluvial polishing and blasting during road construction. Surfaces polished by fluvial process yielded the highest Schmidt hammer rebound (R-) values and the blast-affected surfaces yielded the lowest R-values for the same rock type. Variations in R-value also reflect the degree of weathering of the rock surfaces. It has been further observed that, for all the rock types, the strength of relationship between R-values for the treated surfaces (manual smoothing of rock surface by grindstone) and the unconfined compressive strength (UCS) is higher than for the fresh natural surfaces. [source]


    EVALUATION OF EXTRACTS FROM BAMBOO FOR BIOLOGICAL ACTIVITY AGAINST CULEX PIPIENS PALLENS

    INSECT SCIENCE, Issue 4 2004
    Hai-qun Cao
    Abstract The extracts from 7 species of bamboo were tested for larvicidal activity against Culex pipiens pallens. At the tested concentration, the extracts of selected bamboo had different degree of toxic effects on the fourth instar larvae of Culex pipiens pallens. Among them, the extracts of Pleioblastus juxianensis, Brachystachyum albostriatum, Phyllostachys platyglossa and Pleioblastus amarus were found to be effective with LC50values at 24 h of 30.65 mg/L, 53.94 mg/L, 41.21 mg/L and 54.49 mg/L respectively, against Culex pipiens pallens larvae. The extract of Pleioblastus juxianensis by Soxhlet method showed stronger activity than the extract obtained by interval-shaking, the LC50 of which were 30.65 mg/L and 48.34 mg/L, respectively. The diethyl ether extract of Pleioblastus juxianensis exhibited better larvicidal activity than the methanol extract and the petroleum ether extract. The results would help to provide the basis for the study of environment acceptable pesticide for mosquito control, and also help to comprehensively utilize the source of bamboo. [source]


    EVALUATION OF SHORT-TERM EFFECTIVENESS OF THE DISEASE MANAGEMENT PROGRAM "DI.PRO.DI."

    JOURNAL OF AMERICAN GERIATRICS SOCIETY, Issue 8 2010
    ON CONTINUITY OF CARE OF PATIENTS WITH CONGESTIVE HEART FAILURE
    No abstract is available for this article. [source]


    RETROSPECTIVE CLINICAL EVALUATION OF 1,314 CAST GOLD RESTORATIONS IN SERVICE FROM 1 TO 52 YEARS

    JOURNAL OF ESTHETIC AND RESTORATIVE DENTISTRY, Issue 3 2004
    Terry Donovan DDS
    [source]


    DEFINITIVE DIAGNOSIS OF EARLY ENAMEL AND DENTINAL CRACKS BASED ON MICROSCOPIC EVALUATION

    JOURNAL OF ESTHETIC AND RESTORATIVE DENTISTRY, Issue 7 2003
    Joel H. Berg DDS
    [source]


    EVALUATION OF RED CURRANTS (RIBES RUBRUM L.), BLACK CURRANTS (RIBES NIGRUM L.), RED AND GREEN GOOSEBERRIES (RIBES UVA-CRISPA) FOR POTENTIAL MANAGEMENT OF TYPE 2 DIABETES AND HYPERTENSION USING IN VITRO MODELS

    JOURNAL OF FOOD BIOCHEMISTRY, Issue 3 2010
    MARCIA DA SILVA PINTO
    ABSTRACT Red currants (Ribes rubrum L.), black currants (Ribes nigrum L.), red and green gooseberries (Ribes uva-crispa) were evaluated for the total phenolics, antioxidant capacity based on 2, 2-diphenyl-1-picrylhydrazyl radical scavenging assay and functionality such as in vitro inhibition of ,-amylase, ,-glucosidase and angiotensin I-converting enzyme (ACE) relevant for potential management of hyperglycemia and hypertension. The total phenolics content ranged from 3.2 (green gooseberries) to 13.5 (black currants) mg/g fruit fresh weight. No correlation was found between total phenolics and antioxidant activity. The major phenolic compounds were quercetin derivatives (black currants and green gooseberries) and chlorogenic acid (red currants and red gooseberries). Red currants had the highest ,-glucosidase, ,-amylase and ACE inhibitory activities. Therefore red currants could be good dietary sources with potential antidiabetes and antihypertension functionality to compliment overall dietary management of early stages of type 2 diabetes. [source]


    EVALUATION OF GLOBAL YIELD, COMPOSITION, ANTIOXIDANT ACTIVITY AND COST OF MANUFACTURING OF EXTRACTS FROM LEMON VERBENA (ALOYSIA TRIPHYLLA[L'HÉRIT.] BRITTON) AND MANGO (MANGIFERA INDICA L.) LEAVES

    JOURNAL OF FOOD PROCESS ENGINEERING, Issue 2 2007
    CAMILA G. PEREIRA
    ABSTRACT In this work, the global yields, composition and antioxidant activity (AA) of extracts from lemon verbena (Aloysia triphylla) and mango (Mangifera indica) leaves obtained by different separation processes were determined. Lemon verbena extracts were obtained by supercritical fluid extraction (SFE), while mango leaf extracts were obtained by SFE, low-pressure solvent extraction (LPSE) and hydrodistillation. The extract's constituents were analyzed by thin-layer chromatography, gas chromatography/mass spectrometry and gas chromatography/flame ionization detector. The AA of the extracts was evaluated by the coupled reaction of , -carotene/linolenic acid. The cost of manufacturing (COM) was estimated for the SFE extracts. Higher global yields were obtained using SFE at 350 bar/45C (1.49%) for lemon verbena and LPSE (3.04%) for mango. The AAs of the extracts were larger than that of the , -carotene for both plants. The minimum values of COM were U.S.$26.96 and 52.45/kg of extract for lemon verbena and mango, respectively. [source]


    SAFETY and QUALITY EVALUATION of A YOGURT-BASED DRINK PROCESSED BY A PILOT PLANT PEF SYSTEM

    JOURNAL OF FOOD PROCESS ENGINEERING, Issue 3 2004
    G.A. EVRENDILEK
    ABSTRACT Yogurt-based drink samples were prepared by mixing plain yogurt, water, sugar, and strawberry flavored fruit syrup. the samples were treated by both the mild heat (60C for 30 s) combined with a pilot plant pulsed electric field (PEF) system and the mild heat only in order to determine changes in the product safety and quality. Changes in the product safety were measured as microbial count, and changes in the product quality as L, a, b, oBrix and pH values. the treated and control samples were stored at 4 and 22C for microbial, physical and sensory evaluations. Since the 60C-treated samples exploded after 14-day storage, the safety and quality evaluations for 91 days were performed for the 60C? and control samples, only. Microbial count of the 60C? samples was significantly lower than that of the control samples at the two temperatures for the 91-day storage (P < 0.05). There was no significant difference in the L, a, b values, oBrix and pH between the control and 60C? samples (P < 0.05). the control and 60C? samples revealed no significant difference in the selected sensory attributes (P < 0.05). [source]


    DEVELOPMENT and EVALUATION of MICROWAVE HEATING of APPLE MASH AS A PRETREATMENT to PRESSING

    JOURNAL OF FOOD PROCESS ENGINEERING, Issue 1 2004
    J.S. ROBERTS
    ABSTRACT Fuji, McIntosh, and Red Delicious apple mashes were heated in a 2450 MHz oven to achieve bulk temperatures of 40, 50, 60, and 70C. Three kilograms of mash at a depth of 0.016 m heated using 1500 W were the optimum parameters to heat apple mash in the microwave. Variety of the apple mash was shown not to have a significant effect on the heating performance. Comparing actual bulk temperature to the predicted bulk temperatures of 40, 50, 60, and 70C showed reproducibility of heating these mashes using microwave energy. Average variation between actual and predicted bulk temperatures were 1.48C for the Fuji mash, 0.98C for the McIntosh mash, and 1.13C for the Red Delicious mash. In addition, regional heating was investigated and four distinct regions of heating were observed: the corner, the edge, the middle, and the center. Color and moisture content of the mash were also measured and compared to unheated mash at 21C. [source]


    THERMAL PROCESS EVALUATION OF RETORTABLE POUCHES FILLED WITH CONDUCTION HEATED FOOD

    JOURNAL OF FOOD PROCESS ENGINEERING, Issue 5 2002
    MARCELO CRISTIANINI
    ABSTRACT Two models using the finite element technique (FE) and another using an analytical solution to solve the 3-dimensional heat conduction equation for a finite plate were built. FE models were built considering the actual pouch shape and retort temperature profile. Chi-square and regression lines were obtained for each set of temperatures generated by the models against experimental data. A mass average sterilizing value of 9.9 min was estimated when a critical point sterilizing value was at 8.7 min using the 3-Dimensional FE model. Close agreement was found among the three models for heating phase. Using actual retort temperature profile made FE models more accurate than the one using analytical solution, especially for cooling phase. [source]


    ATTRITION EVALUATION FOR SELECTED AGGLOMERATED FOOD POWDERS: THE EFFECT OF AGGLOMERATE SIZE AND WATER ACTIVITY

    JOURNAL OF FOOD PROCESS ENGINEERING, Issue 1 2001
    HONG YAN
    ABSTRACT Investigation of the attrition of agglomerates is very important for assessing the agglomerate strength, compaction characteristics, and quality control. A one-term exponential attrition index model and the Hausner ratio were used to study the effects of agglomerate size and water activity on the attrition kinetics of some selected agglomerated food powders. It was found that the agglomerate size and water activity played significant roles in affecting the attrition: the larger the agglomerate size and the higher the water activity, the higher the attrition index under the same tap number. The Hausner ratio was well correlated with the attrition index at high tap numbers and might be used as a simple index to evaluate attrition severity for agglomerates. Knowing the effects of agglomerate size and water activity is very useful to minimize the attrition phenomenon during the handling and processing of agglomerated powders. [source]


    PHYSICO-CHEMICAL ANALYSES, SENSORY EVALUATION AND POTENTIAL OF MINIMAL PROCESSING OF PEJIBAYE (BACTRIS GASIPAES) COMPARED TO MASCARENES PALMS

    JOURNAL OF FOOD QUALITY, Issue 2010
    J. JOAS
    ABSTRACT A palm species native of South America, pejibaye (Bactris gasipaes), was recently introduced in Reunion Island in an attempt to diversify its agriculture. Morphological analyses highlighted the agronomic advantages of pejibaye including a high weight-to-harvest-date ratio compared to three mascarenes palm species. Sensory analyses by a trained panel allowed the elaboration of sensory profiles of the four palms tested. Ranking test done by 120 consumers revealed that pejibaye was preferred to the Mascarenes palms at the 5% level of significance and triangle test showed that Acanthophoenix rubra (red palm), the most cultivated species for the local market, was significantly different from pejibaje at the 1% level. Phenolic profiles revealed that pejibaye differed from the other species by a peak absorbing at 272 nm and weak polyphenol oxidase activities. As no browning reaction was observed in fresh cut pejibaye, this palm could be used for minimal processing (local and export market). PRACTICAL APPLICATIONS Sensorial characteristics of fresh hearts of palm are different of those of canned heart of palm, and fresh heart palms are generally preferred by consumers. However, the marketing of fresh palm is limited by the high level of oxidation of most of palm species. The high stability of pejibaye after cutting and its slow rate of oxidation offer the possibility of minimal processing, without special additives. So the packaging in wrapped trays of this palm, cut and stored at low temperature opens up new perspectives, ensuring sensorial quality of a "fresh" product with a shelf life allowing a controlled management of market supply. [source]


    PRELIMINARY EVALUATION OF THE APPLICATION OF THE FTIR SPECTROSCOPY TO CONTROL THE GEOGRAPHIC ORIGIN AND QUALITY OF VIRGIN OLIVE OILS

    JOURNAL OF FOOD QUALITY, Issue 4 2007
    ALESSANDRA BENDINI
    ABSTRACT A rapid Fourier transform infrared (FTIR) attenuated total reflectance spectroscopic method was applied to determine qualitative parameters such as free fatty acid (FFA) content and the peroxide value (POV) in virgin olive oils. Calibration models were constructed using partial least squares regression on a large number of virgin olive oil samples. The best results (R2 = 0.955, root mean square error in cross validation [RMSECV] = 0.15) to evaluate FFA content expressed in oleic acid % (w/w) were obtained considering a calibration range from 0.2 to 9.2% of FFA relative to 190 samples. For POV determination, the result obtained, built on 80 olive oil samples with a calibration range from 11.1 to 49.7 meq O2/kg of oil, was not satisfactory (R2 = 0.855, RMSECV = 3.96). We also investigated the capability of FTIR spectroscopy, in combination with multivariate analysis, to distinguish virgin olive oils based on geographic origin. The spectra of 84 monovarietal virgin olive oil samples from eight Italian regions were collected and elaborated by principal component analysis (PCA), considering the fingerprint region. The results were satisfactory and could successfully discriminate the majority of samples coming from the Emilia Romagna, Sardinian and Sicilian regions. Moreover, the explained variance from this PCA was higher than 96%. PRACTICAL APPLICATIONS The verification of the declared origin or the determination of the origin of an unidentified virgin olive oil is a challenging problem. In this work, we have studied the applicability of Fourier transform infrared coupled with multivariate statistical analysis to discriminate the geographic origin of virgin olive oil samples from different Italian regions. [source]


    EVALUATION OF IDEAL WINE AND CHEESE PAIRS USING A DEVIATION-FROM-IDEAL SCALE WITH FOOD AND WINE EXPERTS

    JOURNAL OF FOOD QUALITY, Issue 3 2005
    MARJORIE KING
    ABSTRACT Most information regarding the suitability of wine and cheese pairs is anecdotal information. The objective of this research was to provide recommendations based on scientific research for the most desirable "wine & cheese pairs" using nine award-winning Canadian cheeses and 18 BC wines (six white, six red and six specialty wines). Twenty-seven wine and food professionals rated the wine and cheese pairs using a bipolar structured line scale (12 cm). The "ideal pair," scored at the midpoint of the scale, was defined as a wine and cheese combination where neither the wine nor the cheese dominated. For each cheese, mean deviation-from-ideal scores were determined and evaluated by analysis of variance. Scores closest to six were considered "ideal," while higher or lower scores represented pairs where the "wine" or the "cheese" dominated, respectively. In general, white wines had mean scores closer to six ("ideal") than either the red or specialty wines. The late harvest, ice and port-type wines were more difficult to pair . Judges varied considerably in their individual assessments reflecting a high degree of personal expectation and preference. [source]


    EVALUATION OF MICROBIOLOGICAL, PHYSICOCHEMICAL AND SENSORY QUALITIES OF CHITOSAN TOFU DURING STORAGE

    JOURNAL OF FOOD QUALITY, Issue 1 2004
    MEERA KIM
    ABSTRACT Tofu containing both low and high viscosity chitosan was prepared and changes in the microbiological, physicochemical and sensory properties of the tofu during storage were investigated. The colony forming units of mesophilic and psychrotrophic microorganisms in tofu containing high viscosity chitosan were markedly lower during storage than those in the control tofu as well as the tofu containing low viscosity chitosan. The pH of the tofu samples increased during storage. The L and a values of the tofu, especially the control tofu, increased during storage. In the sensory test, the roasted nutty and beany aromas of the tofu decreased during storage. Instrumental analysis of hardness and chewiness of the tofu decreased during storage. Overall preference for the tofu gradually decreased during storage, but overall preference for the tofu containing high viscosity chitosan scored higher than the other tofu samples. [source]


    EVALUATION OF CELLS OF LACTOBACILLUS DELBRUECKII SPP.

    JOURNAL OF FOOD QUALITY, Issue 6 2003
    5 AND PEDIOCOCCUS ACIDILACTICI D3 SUSPENDED IN LACTIC OR ACETIC ACID AS BIOPRESERVATIVES ON FRESH CUT CANTALOUPE AT 7C, LACTIS RM
    A small although statistically significant (P < 0.05) inactivation of S. choleraesuis was observed when cantaloupe cubes were additionally inoculated with cells P. acidilactici suspended in 5.5 mM lactic acid or 5.5 mM glacial acetic acid solutions. However, the numbers of S. choleraesuis were not significantly lower than in the control on day 10. The amount of inactivation likely would have no practical importance. No significant decline in numbers of S. choleraesuis was attained when the cells of L. delbrueckii spp. lactis were suspended in 5.5 mM lactic acid. None of the treatments contributed to an effective (P > 0.05) inhibition of the spoilage flora on the melons. [source]


    SENSORY AND MICROBIOLOGICAL QUALITY EVALUATION OF VACUUM-PACKED SLICED COOKED CHICKEN BREAST.

    JOURNAL OF FOOD QUALITY, Issue 2 2003
    SHELF-LIFE ESTIMATION
    Sensory evaluation and a microbiological study charted the development of lactic acid and psychotropic bacteria and of Brochothrix thermosphacta. Six different sensory methods were used to estimate product shelf-life; of these, the method based on average smell and taste was deemed the most suitable, since these parameters had a greater impact on shelf-life. From a microbiological point of view, mean shelf-life times were estimated at each temperature and compared with the estimates of the tasting panel. In the samples stored at the three lowest study temperatures (2.3, 6.5 and 10C), lactic acid and psychotropic bacteria counts of 107,108 cfu/g were not achieved; this agrees with the absence of sensory rejection at the end of the experiment. At 13.5 and 17.7C, mean shelf-life estimated microbiologically was shorter than that estimated using sensory methods. This difference, which here amounted to at least 8 days, is due to the so-called "delayed change", reported in previous experiments with cooked meat products. [source]


    THE RELIABILITY OF NAÏVE ASSESSORS IN SENSORY EVALUATION VISUALIZED BY PRAGMATICAL MULTIVARIATE ANALYSIS

    JOURNAL OF FOOD QUALITY, Issue 5 2002
    M.G. O'SULLIVAN
    The first part of this paper demonstrates a simple graphical way to visualize estimated variances, in terms of a plot of the total initial variance ("SIGNAL") versus residual variance ("NOISE"), as a pragmatic alternative to tables of F-tests. The recently developed Procrustes rotation in the bilinear "jack-knifing" form is then presented as a method for simplifying the comparison of PLS Regression models from different data sets. These methods are applied to sensory data in order to study if naïve (untrained) sensory panelists can produce reliable descriptions of systematic differences between various test meals. The results confirm that three panels of 15 naïve assessors each could give repeatable intersubjective description of the most dominant sensory variation dimensions. [source]


    PROCESSING AND QUALITY EVALUATION OF WHOLE CANNED ,DWARF' GOLDEN APPLES (SPONDIAS CYTHEREA)

    JOURNAL OF FOOD QUALITY, Issue 1 2002
    DAVID RAMSUNDAR
    ,Dwarf' golden apples (Spondias cytherea) were canned in sucrose syrup of either 30 d,Brix (L) or 40 d,Brix (H). Processing was either by hot filling (HF) of syrup at 92C in filled cans or by steam-exhausting (SE) of the filled cans at 85C for 12,14 min, followed by processing at 100C for 20 min (W20) or 30 min (W30). Sensory evaluation of commercial sterile products, SE-LW30 and SE-LW30 indicated there were no differences (P < 0.05) in appearance, color, taste, aroma and texture. Overall scores indicated that fruits in syrup were liked definitely to like slightly. Panelists indicated that they might or definitely will purchase the products. Fruits in 40 d,Brix syrup were firmer than in 30 d,Brix syrup. By week 8 of storage at 28,30C, pH was stable between 3.6,3.7, and ,cut-out'd,Brix of syrup for LW30 and HW30 products was 24.0 , 24.5 and 28.5, respectively. [source]


    EVALUATION OF ISOMALT AND HYDROGENATED STARCH HYDROLYSATE IN SUGARLESS CARAMEL POPCORN,

    JOURNAL OF FOOD QUALITY, Issue 1 2002
    L.G. BECK
    Five formulations of sugarless caramel popcorn sweetened with different proportions of hydrogenated starch hydrolysate and isomalt were developed. Control and test products were evaluated for changes in physical, chemical and sensory properties over a 3-month storage period at 33C and 50% humidity. Moisture content and water activity values increased for all products, but color values did not change with time. Texture compressibility measurements were highly correlated with liking of texture values gathered from a consumer study. The fonnula with 100percnt; isomalt was liked significantly more by consumers than the other formulas. [source]