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Effect of Mass on Convective Heat Transfer Coefficient During Onion Flakes Drying
Convective Heat Transfer Coefficient Onion Flakes
2016/5/27
In this present study an open sun and greenhouse drying of onion flakes has been performed to study the effect of mass on convective heat transfer coefficient. Three sets of experiments with total qua...
Antioxidant activity,S-alk(en)yl-l-cysteine sulfoxide and polyphenol content in onion (Allium cepa L.) cultivars are associated with their genetic background
Alliaceae cysteine sulfoxides simple sequence repeat (SSR) marker genotypes secondary metabolites
2016/5/11
Six onion cultivars Bingo, Dormo, Elenka, Elbrus, Spirit, and Sturon grown in the Czech Republic for commercial purposes were analysed to investigate the content of health-promoting compounds. The res...
The “Breme” red onion:effects of home-storage methods on quercetin and quercetin-glycoside contents
Breme onion home-storage methods HPLC-MS/MS quercetin quercetin glycosides
2015/10/9
The “Breme” onion is a red-skinned cultivar growing in the northwest Italy. To date, its nutrient composition has not been described. In this study, we quantified the contents of quercetin (Q) and its...
Impact of freezing on flavonoids/radical-scavenging activity of two onion varieties
Allium cepa L. anthocyanins flavonols domestic storage frozen onions
2015/7/28
Flavonols, anthocyanins, and radical-scavenging activity of two Portuguese onion cultivars (Branca da Póvoa, white; and Vermelha da Póvoa, red) were evaluated simulating domestic freezing conditions (...
pH and thermal stability of anthocyanin-based optimised extracts of Romanian red onion cultivars
Allium cepa L. phenolics anthocyanins pH differential Differential Scanning Calorimetry
2014/2/24
Total phenolics and anthocyanins in ten samples of Romanian red onion cultivars, extraction optimisation and pH/thermal stability were investigated. Extraction with 80% aqueous ethanol leads to an inc...
Process optimisation of vacuum drying of onion slices
dehydratation optimum value Allium response surface methodology
2014/2/25
Dehydration of untreated and pre-treated onion slices under vacuum was optimised using the response surface methodology. The effects of the drying temperature (50–70°C), slice thickness (1–5 mm), and ...
Predicting Gas Concentrations of Welsh Onion in Polymeric Film Packaging and Shipping Containers
modified atmosphere packaging theoretical model respiration rate
2009/7/8
A theoretical model of the atmosphere within polymeric film and shipping containers was developed and validated by experiments with or without Welsh onion (Allium fistulosum L.). There were three proc...
Modified Atmosphere Packaging of Cut Welsh Onion : Effect of Micro-Perforated Polypropylene Film Packaging on Chemical Components and Quality Stability of the Vegetable
pre-cut Welsh onion micro-perforated film packaging modified atmosphere packaging
2009/7/8
The chemical components and quality stability of pre-cut Welsh onion wrapped in an unperforated or micro-perforated orientated polypropylene (OPP) film package were evaluated during storage at 10°C. T...
Distribution of Flavonols and Enzymes Participating in the Metabolism in Onion Bulbs: Mechanism of Accumulation of Quercetin and Its Glucosides in the Abaxial Epidermis
metabolism of quercetin glucosides onion bulbs quercetin
2009/7/7
Onion bulbs contain quercetin, quercetin 4'-glucoside (Q4'G) and quercetin 3,4'-diglucoside (Q3,4'G), almost all of which are localized in the abaxial epidermis of scales. There is a question of wheth...
Effect of Polypropylene Film Packaging and Storage Temperature on Chemical Components and Quality Stability of Welsh Onion
welsh onion modified atmosphere packaging temperature
2009/7/7
Chemical components and quality of Welsh onion (Allium fistulosum L.) wrapped roughly or completely heat-sealed with orientated polypropylene (OPP) film were investigated during storage at 5 and 20°C....
Cooking Loss of Major Onion Antioxidants and the Comparison of Onion Soups Prepared in Different Ways
onion Allium cepa onion soup antioxidants
2009/6/18
After sautéing or frying onions as a first procedure in making onion soup, major onion antioxidants (quercetin 4′-glucoside and quercetin 3,4′-diglucoside) remained mostly intact. In the onion soup pr...
Phenolics, Selenium, Vitamin C, Amino Acids and Pungency Levels and Antioxidant Activities of Two Egyptian Onion Varieties
Phenolics Selenium
2016/5/31
Selenium, vitamin C, pungency, amino acids, phenolics content and antioxidant activities of two Egyptian onion varieties, namely white (Giza-6) and red (Beheri) onions have been studied. Data analysis...
Antioxidant Activity and Flavonoid Content of Welsh Onion（Allium fistulosum）and the Effect of Thermal Treatment
onion Welsh onion antioxidant activity flavonoid boiling
2009/5/20
Antioxidant activity and flavonoid content of Welsh onion (Allium fistulosum) (green-leafy and white-sheath varieties) and the effect of thermal treatment on them were studied by comparing with those ...
Antioxidant, Lipid-Lowering and Antihypertensive Effects of Red Welsh Onion (Allium fistulosum) in Spontaneously Hypertensive Rats
red Welsh onion spontaneously hypertensive rats antioxidant effect
2009/5/8
The physiological effects of red Welsh onion were examined and compared with those of white Welsh onion. Male 6-week-old spontaneously hypertensive rat (SHR) was fed a control diet or diets high in fa...
Effect of Mass on Convective Heat Transfer Coefficient During Onion Flakes Drying
convective heat transfer coefficient onion flakes greenhouse drying
2008/10/25
In this present study an open sun and greenhouse drying of onion flakes has been performed to study the effect of mass on convective heat transfer coefficient. Three sets of experiments with total qua...