Home About us Contact
|
Home About us Contact | ||
|
|
||
Harvested Fruit (harvested + fruit)
Selected AbstractsSTORAGE QUALITY of ETHYLENE TREATED ,ANJOU' and ,BOSC WINTER PEARSJOURNAL OF FOOD PROCESSING AND PRESERVATION, Issue 5 2000S.R. DRAKE ,Anjou' and ,Bosc' pears (Pyrus communis, L.) were harvested one to two days prior to commercial harvest from three orchards in the Wenatchee growing district of Washington. Harvested fruit were treated with 300 ppm ethylene for three days at 20C. Ethylene treatment enhanced yellow color on fruit peel and the reduction of flesh firmness, and increased spoilage after 90 days in either regular atmosphere (RA) storage or controlled atmosphere (CA) storage regardless of cultivar. Ethylene-treated fruit, of both cultivars, stored in CA had a longer storage life than fruit stored in RA. the safe storage period of ethylene-treated ,Anjou'and ,Bosc' pears was 90 and 45 days, respectively, in RA and 120 and 90 days, respectively, in CA. [source] A COMPARISON OF LIPID AND LIPID/HYDROCOLLOID BASED COATINGS TO EVALUATE THEIR EFFECT ON POSTHARVEST QUALITY OF GREEN BELL PEPPERSJOURNAL OF FOOD QUALITY, Issue 2 2002FRANK D. CONFORTI Maintaining quality of harvested fruit and vegetables is a challenge. The study investigated the effects of two lipid and lipid/hydrocolloid based coatings on maintaining post harvest quality of green bell peppers. Quality characteristics measured during the 4-week storage period included: respiratory rate, moisture content (weight loss), chlorophyll content, puncture force, ascorbic acid (AA) and dehydroascorbic acid (DHA) contents. No significant differences (P>0.05) between uncoated and coated peppers were noted for respiration rate, puncture force, chlorophyll content, and AA. Significant differences (P<0.05) were found in moisture content and DHA content in the uncoated and coated peppers. Continued research is needed in creating more sophisticated bilayer coatings to enhance product shelf-life. [source] Physicochemical changes during strawberry development in the field compared with those that occur in harvested fruit during storageJOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE, Issue 2 2006M Cecilia N Nunes Abstract ,Chandler', ,Oso Grande' and ,Sweet Charlie' strawberry cultivars were harvested at four stages of color development ranging from color break to full red and stored in the dark for 8 days at 1 °C. Changes in the physical and chemical characteristics of fruit during storage were compared with those occurring during development in the field. Strawberry fruit harvested at the three-quarters colored and full red stages continued their development and ripening during storage. However, fruit harvested at the color break and half-colored stages did not develop like those ripened in the field. Strawberries harvested at the three-quarters colored stage developed the same pH, acidity, soluble solids, ascorbic acid and total phenolics content during storage as the at-harvest levels present in strawberries harvested at the full red stage. In addition, three-quarters colored strawberries were as firm and red after storage as the full red stage fruit were at the time of harvest. Thus, strawberries harvested at the three-quarters colored stage can be stored for a longer period than strawberries harvested full red while retaining better color and firmness. Copyright © 2005 Society of Chemical Industry [source] Sap properties and alk(en)ylresorcinol concentrations in Australian-grown mangoesANNALS OF APPLIED BIOLOGY, Issue 3 2009M.K. Hassan Abstract Physical and chemical properties of sap and sap concentrations of constitutive alk(en)ylresorcinols were determined in several varieties of mango grown in different locations in Queensland, Australia, over two consecutive cropping seasons. Sap weight from individual fruit, sap pH, percentage of non-aqueous sap and concentrations of constitutive alk(en)ylresorcinols (5- n -heptadecenylresorcinol and 5- n -pentadecylresorcinol) in sap varied significantly among the varieties. ,Calypso', ,Keitt', ,Kensington Pride' and ,Celebration' had the greatest proportion of non-aqueous sap, whereas ,Nam Doc Mai' had the least. The highest concentrations of 5- n -heptadecenylresorcinol were found in the sap of ,Kensington Pride', and the lowest in ,Honey Gold' and ,Nam Doc Mai'. Highest concentrations of 5- n -pentadecylresorcinol were found in sap of ,Calypso' and ,Celebration', and the lowest levels were in ,Honey Gold' and ,Nam Doc Mai'. There was a direct relationship between the percentage of non-aqueous sap and the concentrations of alk(en)ylresorcinols (r2 = 0.77 for 5- n -heptadecenylresorcinol, and r2 = 0.87 for 5- n -pentadecylresorcinol). The alk(en)ylresorcinols were distributed mainly in the upper non-aqueous phase of ,Kensington Pride' sap. Growing location also had significant effects on the composition of mango sap but the effects appeared to be related to differences in maturity. Sap removal is necessary to prevent sapburn, but considerable quantities of alk(en)ylresorcinols that assist in protecting the harvested fruit from anthracnose disease are also removed. [source] Pyriproxyfen controls silverleaf whitefly, Bemisia tabaci (Gennadius), biotype B (Homoptera: Aleyrodidae) (SLW) better than buprofezin in bitter melons Momordica charantia L. (Cucurbitaceae)AUSTRALIAN JOURNAL OF ENTOMOLOGY, Issue 1 2009Mohammad S Qureshi Abstract To improve compatibility between chemical and biological controls, the use of selective insecticides such as insect growth regulators (IGRs) is crucial. In cucurbits, the use of pyriproxyfen (an IGR) has been shown by others to be an effective method of reducing the number of sap-sucking insects, especially silverleaf whitefly, Bemisia tabaci (Gennadius) Biotype B (SLW). Therefore, we compared pyriproxyfen and buprofezin (an IGR) with that of no treatment (control) in a bitter melon crop for the control of populations of SLW and for their effects on fruit production. Pyriproxyfen controlled SLW and tended to have heavier fruits than the control treatment and reduced the abundance of nymphs and exuvia. Buprofezin showed no evidence in controlling SLW compared with the pyriproxyfen and control treatments. Neither pyriproxyfen nor buprofezin had any effect on the number of harvested fruit or overall fruit yield, but the average weight per fruit was higher than the control treatment. Pyriproxyfen was effective in controlling whitefly populations in bitter melons, and both pyriproxyfen and buprofezin may have the potential to increase yield. Their longer-term use may increase predation by natural enemies as they are species-specific and could favour build up of natural enemies of SLW. Thus, the judicious use of pyriproxyfen may provide an effective alternative to broad-spectrum insecticides in small-scale cucurbit production. [source] | |||||||||||||