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Profile Characteristic (profile + characteristic)
Selected AbstractsCommercial Runner peanut cultivars in the USA: Fatty acid compositionEUROPEAN JOURNAL OF LIPID SCIENCE AND TECHNOLOGY, Issue 2 2010Eui-Cheol Shin Abstract Though peanuts are classified as a high-fat food, they possess good proportions of fatty acids deemed as heart healthy. The fatty acid compositions of Runner peanuts were determined for commercially grown cultivars over two recent crop years. GC-FID analyses revealed that the fatty acid levels for Runner peanuts were significantly (p,<0.05) different among the normal, mid-, and high-oleic peanuts investigated. Oleic acid-to-linoleic acid (O/L) ratios were found to be 1.93,±,0.30, 5.25,±,1.12, and 16.9,±,5.20 for normal, mid-, and high-oleic peanut lipids, respectively. Tamrun OL01 possessed a fatty acid profile characteristic of a mid-oleic cultivar. From the sample set (n,=,151), mean %,weights for oleic acid and linoleic acid were 52.09,±,2.84 and 27.38,±,2.60 in normal, 69.33,±,3.18 and 13.66,±,2.35 in mid-oleic, and 78.45,±,2.05 and 5.11,±,1.67 in high-oleic peanuts, respectively. Cluster analysis segregated cultivars based on fatty acids into normal, mid-, and high-oleic groups. Factorial analysis revealed that cultivar effects were significant (p,<0.01) for all fatty acids, except for lignoceric acid. Cultivar effects were also highly significant (p,<0.001) for O/L, IV, unsaturated/saturated fatty acid (U/S) ratio, and %,saturation. Significant crop year effects were shown for palmitic, oleic, arachidic, gondoic, and lignoceric acids, as well as U/S ratio and %,saturation. Healthy unsaturated fats accounted for ,80% in all crop years and cultivars. [source] Field experiments on bioturbation in salt marshes (Bombay Hook National Wildlife Refuge, Smyrna, DE, USA): implications for sea-level studies,JOURNAL OF QUATERNARY SCIENCE, Issue 2 2009Eduardo Leorri Abstract The suitability of marsh sites for sea-level studies was examined based on field experiments along a transect from low to high marsh. Bead distributions were determined both seasonally and after 7 years. Seasonal sediment mixing was greatest in the low marsh and in the late spring and early summer, when biological activity is greatest. However, after an initial interval of relatively intense reworking, the bead concentrations reached an approximate equilibrium profile characteristic of each marsh environment as reflected by the profiles obtained after 7 years. Mixed-layer thickness is greatest (>10,cm) in the intermediate and low marsh, and burial rates are rapid (3.7,11.1,mm,yr,1). Moreover, burial rates are comparable to or even surpass longer-term (30 to >150,yr) radiotracer-derived sediment accumulation rates and rates of local and regional sea-level rise (,4,mm,yr,1). Therefore, sediment accumulation rates appear to reflect primarily sediment resuspension/redeposition within the system due to bioturbation. Thus, bioturbation may be critical to the ability of marshes to keep pace with sea level, while seemingly precluding the use of low marsh for high-resolution sea-level studies. Copyright © 2008 John Wiley & Sons, Ltd. [source] Comparison of viral RNA populations of pathogenically distinct isolates of Citrus tristeza virus : application to monitoring cross-protectionPLANT PATHOLOGY, Issue 3 2002A. Sambade The population of sequence variants of Citrus tristeza virus (CTV) isolates of different geographic origins and pathogenicity properties was characterized by single-strand conformation polymorphism (SSCP) analysis of cDNA of the genes p18, p13, p20 and p23. The mild isolates analysed here usually yielded a SSCP profile with two DNA bands, suggestive of a predominant sequence variant, whereas the SSCP profile of the most virulent isolates contained more than two DNA bands, indicating that their viral populations are likely to be more complex. The set of SSCP profiles of the four genes allowed identification of individual isolates, but no profile characteristic of a geographic area or a biogroup was found. Sweet orange plants singly inoculated with a mild or with a severe isolate yielded the SSCP profile characteristic of each isolate, whereas the SSCP profile of plants successively inoculated with both isolates was a composite of the two individual profiles. The SSCP profile of plants singly inoculated remained constant, but the profile of doubly inoculated plants varied with time. Plants in which the SSCP profile of the severe isolate became predominant showed stem pitting, and those in which the predominant profile corresponded to the mild isolate remained symptomless. The results indicate that SSCP analysis can be used to study changes in RNA populations of doubly inoculated plants and to monitor cross-protection between mild and severe isolates. [source] The study of the aroma profile characteristics of durian pulp during storage by the combination sampling method coupled with GC,MSFLAVOUR AND FRAGRANCE JOURNAL, Issue 1 2007Zhuo-Min Zhang Abstract In this study, a combination sampling method, including headspace solid-phase micro-extraction (HSSPME), simultaneous distillation extraction (SDE) and steam distillation (SD), were used to study the aroma profile characteristics of durian (Durio zibethinus Murr.) pulp during storage, followed by gas chromatography,mass spectrometric (GC,MS) detection; 26 and 22 aroma volatiles of fresh and deteriorated durian pulps were identified according to different degrees of certainty. Volatile esters were identified as the main aromatic components of durian pulp. Most ethyl esters reduced in concentration during storage, whereas the methyl, propyl and butyl esters increased. Different aroma profile characteristics at the fresh and deteriorated storage phases obtained by HSSPME were specified by principal component analysis (PCA). Five typical aroma volatiles contributing greatly to the difference of aroma profile characteristics of durian pulp at the fresh and deteriorated storage phases were distilled by common model strategy. These compounds are potential bio-markers for durian degradation, but further study is needed. Tentative results suggest that combining HSSPME with conventional volatile isolation methods would yield more representative data on changes in the aroma of durian pulp during storage. Copyright © 2006 John Wiley & Sons, Ltd. [source] Plasma protein profiling: Unique and stable features of individualsPROTEINS: STRUCTURE, FUNCTION AND BIOINFORMATICS, Issue 15 2005Gary L. Nelsestuen Dr. Abstract Carefully controlled ZipTip extraction of diluted human plasma or serum was combined with MALDI-TOF-MS to produce highly reproducible protein profiles. Components detected included apolipoproteins CI, CII and CIII as well as transthyretin and several isoforms of each protein that are created by glycosylation or other modification and by proteolytic processing. Profiles of healthy individuals all contained the same 15,components. Others were found in plasma from individuals with disease. Profiles were analyzed by peak ratios within the same spectrum. Reproducibility for multiple assays was generally 4 to 10%. Within the healthy population, a given peak ratio occurred with a range of about fourfold. However, peak ratios of multiple samples from the same individual showed a much lower range, typically ±10%. In fact, each individual displayed a personal protein profile that changed very little over time. Because of the stability of protein profiles over time within individuals, these results suggest further studies may discover that certain profile characteristics or changes in an individual's profile may be a sign of current or future disease, even when the altered profile remains within the range for healthy individuals. [source] | |||||||||||||