ISSN:
1750-3841
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
The relationship of carcass grade, primal cuts and cooking to vitamin B12, E and D in separable lean beef was studied. The average vitamin B12 content in 471 samples of raw and cooked beef was 3.17 μg/100g. The vitamin B12 content of raw and cooked beef was similar; however, on considering the moisture and fat losses during cooking, there was a 27–33% loss of B12. The vitamin E content of raw and cooked beef was similar and averaged 133 μg/100g for 464 samples. From 33–44% of the original vitamin E in the meat was lost upon cooking. Raw and cooked beef contained 80–100 ng of vitamin D/100g, with 35–42% of the original vitamin D content being lost upon cooking. The content of vitamins E and D in beef is low and of little nutritional importance; however, beef is an important dietary source of vitamin B12.〈section xml:id="abs1-2"〉〈title type="main"〉SUMMARY & CONCLUSIONSRAW OR COOKED separable lean contained approximately 80–100 ng of vitamin D/100g, with 35–42% of the original vitamin D being lost upon cooking. Raw and cooked separable lean contained approximately 40–800 μg of vitamin E/100g with a mean value of 133 μg for 464 samples. From 33–44% of the original vitamin E was lost during cooking. Fat trim contained 300–350 μg of vitamin E/100g. HPLC showed that α-tocopherol was the major E vitamer in meat. Vitamin B-12 content of raw and cooked separable lean ranged from 1 – 10 μg/100g, with a mean value of 3.17 μg B-12/100g for 471 samples. Fat trim contained approximately 1.5 μg of B-12/100g. RID was a feasible method for determining B-12 in meat, with the B-12 values reported herein being appreciably greater than typical values reported for B-12 in beef as determined by microbiological assays. Beef consumption makes an important contribution towards meeting an individual's dietary requirement for B-12.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2621.1982.tb12883.x
