ISSN:
1750-3841
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
A study was conducted to determine the effects of cultivar, root size, cooking method and storage on carbohydrates and quality attributes of sweet potatoes. Roots were analyzed after curing and after 7 months storage for sugars, starch, pectins, hemicellulose, cellulose, ascorbic acid, and carotenoids. Sensory evaluations were also conducted. ‘Centennial’ and ‘Jasper’ contained the highest percentages of total sugars, starch, water-soluble pectin, hemicellulose and carotenoids, while ‘Georgia Jet’ was lowest in all carbohydrates except reducing sugars and water-soluble pectin. Baked and microwave cooked roots were highest in most of the carbohydrates; however, canned roots were higher in starch because of the rapid inactivation of amylase during cooking. Boiled roots were lower in carotenoids while canned roots were lowest in ascorbic acid. There was a decrease in reducing sugars, starch, pectins, hemicellulose, and cellulose during 7 months storage. Sensory ratings for color intensity and attractiveness corresponded to carotenoid content, CDM ‘L’ value, and hue angle (orangeness). Roots of different cultivars, size and storage period responded differently to cooking methods, thus producing significant interactions. Baking produced the highest quality cooked product as compared to other cooking methods.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2621.1980.tb04131.x
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