ISSN:
1750-3841
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Opaque-2 maize and its normal counterpart were subjected to acid, papain and pepsin-pancreatin hydrolysis and in vivo evaluation by meadow vole (Microtus pennsylvanicus) to determine the availability of the amino acids. The acids hydrolysis showed a twofold increase of total lysine in opaque-2 maize over its normal counterpart. The increases and decreases of the other amino acids from the maize used in this study were in agreement with previous reports. The amount of tryptophan and lysine released by papain hydrolysis was similar to that released by acid hydrolysis. Pepsin-pancreatin hydrolysis released three times as much of the lysine from opaque-2 maize as from its normal counterpart. Smaller increased percentages of release were also observed for arginine, glutamic acid, proline, histidine, alanine, valine and tyrosine from opaque-2 compared to normal maize. In vivo results obtained with voles were similar to published values based on rat evaluations. The vole provided a more rapid evaluation and consumed a smaller sample than the rat. Available lysine released by enzymatic digestion was more closely correlated with the vole PER values than was the total lysine content.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2621.1976.tb01178.x
