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Retention of quality characteristics of dehydrated green leaves during storage.

Negi, P. S. and Roy, S. K. (2001) Retention of quality characteristics of dehydrated green leaves during storage. Plant Foods for Human Nutrition, 56 (3). 285-295 ; 16 ref..

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Abstract

Green leafy vegetables are a rich source of beta-carotene, minerals, vitamins and dietary fibre. Although effects of drying on nutritional quality of leafy vegetables have been studied, little information regarding effects of storage exists. In order to improve this situation, 2 green leafy vegetables, savoy beets (Beta vulgaris var. bengalensis) and fenugreek (Trigonella foenum graecum) were dehydrated in a low temp. drier (30C, 25% RH) and stored for 9 months under ambient or cold storage conditions after packaging in single or double layers of high density polyethylene film (200 gauge). Quality was determined on the basis of retention of beta-carotene, ascorbic acid and chlorophyll, and the extent of browning during storage. Retention of these quality characteristics was dependent on both the crop and storage conditions. Double wrapped and cold-stored samples of fenugreek retained 67% beta-carotene, whereas savoy beet leaves retained only 57% of initial beta-carotene content under similar conditions. Similarly, higher retention of ascorbic acid and chlorophyll, and lower browning was observed in double wrapped cold-stored samples. Results indicate the efficacy of double wrapping and cold storage over other packaging and storage conditions.

Item Type: Article
Uncontrolled Keywords: ASCORBIC-ACID; BEETS-; BROWNING-; CAROTENES-; CHLOROPHYLLS-; DRIED-FOODS; PACKAGING-; SPICES-; STORAGE-; TEMPERATURE-; VEGETABLES-; VEGETABLES-SPECIFIC; beta-CAROTENE; DRIED-VEGETABLES; FENUGREEK-; TEMP.-
Subjects: 600 Technology > 08 Food technology > 06 Preservation and Storage > 02 Drying and Dehydration
600 Technology > 08 Food technology > 23 Vegetables
Divisions: Human Resource Development
Depositing User: Food Sci. & Technol. Information Services
Date Deposited: 02 Jul 2009 10:10
Last Modified: 30 Jun 2015 12:46
URI: http://ir.cftri.com/id/eprint/7646

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