Document Detail

Effect of dehydration methods on retention of carotenoids, tocopherols, ascorbic acid and antioxidant activity in Moringa oleifera leaves and preparation of a RTE product.
MedLine Citation:
PMID:  25190880     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Fresh leaves of M. oleifera plants were analysed for nutritionally important phytoconstituents and feasible commercially used dehydration method were evaluated to preserve these in dehydrated leaves. Trans-lutein, trans-β-carotene and trans-zeaxanthin were found as the major carotenoids in fresh leaves, accounting for 36.9, 18.2 and 5.5 mg/100 g FW, respectively. Similarly, high amounts of ascorbic acid, α-tocopherol and total phenolic content (271.0, 36.9 and 512.0 mg/100 g FW), respectively were recorded in leaves. α-tocopherol was the most stable vitamin under all drying conditions (86.4 % retention during oven drying), compare to other studied phytoconstituents. Cabinet tray drying was found as efficient as lyophilisation to retain maximum content of total carotenoids (60.1 %), trans-β-carotene (90.1 %), 13-cis-lutein (93.2 %), and DPPH activity, however, lutein (51.3 %) and ascorbic acid (97.8 %) was best preserved by lyophilisation. During dehydration, significant trans to cis isomerization of β-carotene and lutein was also recorded. A ready to eat (RTE) chutney powder (adjunct) was developed from dehydrated leaves. The product was evaluated using Quantitative Descriptive Analysis and was accepted with a high overall quality score. The present investigation explores the nutritional potential of M. oleifera leaves and suitable methods of drying that could be useful for processed food formulation.
R K Saini; N P Shetty; Maya Prakash; P Giridhar
Publication Detail:
Type:  Journal Article     Date:  2014-01-30
Journal Detail:
Title:  Journal of food science and technology     Volume:  51     ISSN:  0022-1155     ISO Abbreviation:  J Food Sci Technol     Publication Date:  2014 Sep 
Date Detail:
Created Date:  2014-09-05     Completed Date:  2014-09-05     Revised Date:  2014-09-08    
Medline Journal Info:
Nlm Unique ID:  0056471     Medline TA:  J Food Sci Technol     Country:  India    
Other Details:
Languages:  eng     Pagination:  2176-82     Citation Subset:  -    
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