Antioxidants, low molecular weight carbohydrates, and total antioxidant capacity in strawberries (Fragaria x ananassa): Effects of cultivar, ripening, and storage
Author
Summary, in English
Four cultivars of strawberries (Senga Sengana, BFr77111, Elsanta, and Honeoye) were studied for their content of antioxidants, total antioxidant capacity, and low molecular weight carbohydrates in relation to harvest year, ripening stage, and cold storage. For ascorbic acid, chlorogenic acid, ellagic acid, and total antioxidative capacity, measured in both water-soluble and water-insoluble extracts, there was a 2-5-fold variation among cultivars. Unripe berries contained lower concentrations of chlorogenic acid and p-coumaric acid and also quercetin and kaempferol compared with riper berries. During cold storage for up to 3 days, relatively few changes in the concentration of the different antioxidants occurred. The concentrations of several investigated parameters were interrelated, for example, for ascorbic acid and water-soluble antioxidant capacity and for ellagic acid and water-insoluble antioxidant capacity. The dominating sugars in strawberries were fructose and glucose, but considerable amounts of sucrose were also present, and their contents varied among cultivars, giving a predicted glycemic index of similar to81. Verbascose, raffinose, and stachyose were found in only minor amounts. The study shows that the concentration of a number of bioactive compounds in strawberries varied according to cultivar, ripening stage, and storage. This information should make it possible to select strawberries with an optimal content of bioactive compounds.
Department/s
- Division of Food and Pharma
- Department of Chemistry
- Department of Food Technology, Engineering and Nutrition
Publishing year
2004
Language
English
Pages
2490-2498
Publication/Series
Journal of Agricultural and Food Chemistry
Volume
52
Issue
9
Document type
Journal article
Publisher
The American Chemical Society (ACS)
Topic
- Agricultural Science, Forestry and Fisheries
Keywords
- Flavonol
- ascorbate
- dehydroascorbate
- phenolic acids
- hydroxycinnamic acids
- ellagic acid
- chlorogenic acid
- sucrose
- fructose
- glucose
- oligosaccharides
- ABTS method
- strawberry
- Fragaria × ananassa
Status
Published
ISBN/ISSN/Other
- ISSN: 0021-8561