Effects of Cooking on Content of Vitamin C in Green Leafy Vegetables
Journal Title: Scholars Journal of Agriculture and Veterinary Sciences - Year 2016, Vol 3, Issue 6
Abstract
Abstract:This study was designed to determine the effect of processing on the Vitamin C content of five Indian green leafy vegetables namely, Spinach (Spinacia oleracea), Methi (Trigonella foenum-graecum), Lal maath (Amaranthus cruentus), Chauli (Thotakuravepudu) and Bhathua (Chenopodium album). The Vitamin C content of the lemon sample was also estimated using DNPH colorimetric assay, DCPIP, Iodometry and N-Bromosuccinimide titration methods. Among the methods used for Vitamin C estimation of lemon, N-Bromosuccinimide method was found to be most accurate and sensitive. Hence, it was further used to estimate the Vitamin C content in the above mentioned vegetables. Processing methods employed were boiling, blanching and microwave heating the vegetables for particular time interval. The vegetable extracts were subjected to 0.01% N-Bromosuccinimide titration to estimate their Vitamin C content before and after the treatment. Results revealed that maximum reduction in Vitamin C activity of vegetable samples were observed with microwave heating followed by boiling and blanching. Vitamin C content of boiled vegetable samples showed 40-50% reduction in their vitamin C activity, microwave heated samples resulted into 50-75% reduction and blanching lead to minimum reduction i.e. 20-35% as compared to unprocessed vegetable samples. Vitamin C is easily destroyed by excessive heat and water as well as exposure to air. For retention of Vitamin C in cooked foods, it is recommended that foods containing Vitamin C be cooked as fast as possible with less heat and small amount of water. Keywords: Vitamin C, Lemon, Green leafy vegetables, Boiling, Blanching, Microwave heating
Authors and Affiliations
Rama Ramesh Singh, Dr. Anupma Harshal
Keywords
Related Articles
- EP ID EP381679
- DOI -
- Views 131
- Downloads 0
Subclinical mastitis associated with coagulase positive Staphylococcus aureus in a cow
A cow was presented to Veterinary college hospital with history of drastic reduction in milk yield. Physical examination of udder and further testing of milk samples for California Mastitis Test, culture and biochemical...
Extension Services for Effective Agricultural Risk Management in Orlu Agricultural Zone of Imo State, Nigeria
Abstract: The business of farming and agriculture in general is very risky. The risks may be as a result of man-made or natural causes. Farmers or agricultural producers are at the receiving end of the outcome of the ris...
Clinical Management of Canine Oral Papillomatosis – A case Report
Canine oral papillomatosis is a self-limiting neoplastic disease caused by canine oral papillomavirus (COPV). Here we report a case of Oral papillomatosis in 6 month old male Rotweiler dog. The dog was administered with...
Effect of replacement of soybean meal with urea or urea supplemented with sulphur on the performance of lambs
The objectives of the study were to determine the effect of the replacement of soybean meal (SBM) with urea (U) or urea supplemented with sulphur (US) on the performance of lambs. Twelve lambs were allocated to one of th...
Challenges Affecting Productivity and Viability of Smallholder Irrigation Schemes in Zimbabwe’s Arid Regions: A Case of Mlibizi Communal Irrigation Scheme in Binga District, Matabeleland North Region
Although the establishment of Mlibizi smallholder irrigation scheme was an endeavour to improve food security and livelihoods of the plot holders and communities in Binga district it has remained a pressing issue as a pl...