Retention of nutrients in green leafy vegetables on dehydration

Gupta, S. and Acharya, B. S. and Lakshmi, A. J. and Prakash, J. (2013) Retention of nutrients in green leafy vegetables on dehydration. Journal of Food Science and Technology, 50 (5). pp. 918-925. ISSN 0975-8402

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The objective of the study was to investigate the influence of dehydration on nutrient composition of Amaranthus gangeticus, Chenopodium album, Centella asiatica, Amaranthus tricolor and Trigonella foenum graecum. The green leafy vegetables (GLV) were steam blanched for 5 min after pretreatment and dried in an oven at 60 C for 10-12 h. The fresh and dehydrated samples were analyzed for selected proximate constituents, vitamins, minerals, antinutrients and dialyzable minerals. Dehydration seems to have little effect on the proximate, mineral and antinutrient content of the GLV. Among the vitamins, retention of ascorbic acid was 1-14%, thiamine 22-71%, total carotene 49-73% and β - carotene 20-69% respectively, of their initial content. Dialyzable iron and calcium in the fresh vegetables ranged between 0.21-3.5 mg and 15.36-81.33 mg/100 g respectively, which reduced to 0.05-0.53 mg and 6.94-58.15 mg/100 g on dehydration. Dehydration seems to be the simplest convenient technology for preserving these sources of micronutrients, especially when they are abundantly available. Irrespective of the losses of vitamins that take place during dehydration, dehydrated GLV are a concentrated natural source of micronutrients and they can be used in product formulations. Value addition of traditional products with dehydrated GLV can be advocated as a feasible food-based approach to combat micronutrient malnutrition.

Item Type: Article
Uncontrolled Keywords: Calcium, Nutrients, Vegetables, Antinutrients, Minerals, Antinutrient content, Amaranthus tricolor, Centella asiatica, Chenopodium album, Dehydration, Giardia lamblia virus, Green leafy vegetables, Micronutrients, Nutrient composition, Thiamine, Trace elements, Traditional products, Trigonella foenum-graecum, Vitamins
Subjects: B Life Science > Food Science and Nutrition
Divisions: Department of > Food Science and Nutrition
Depositing User: Arshiya Kousar Library Assistant
Date Deposited: 20 Sep 2019 10:01
Last Modified: 08 Jul 2022 06:47

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