水解程度对玉米蛋白粉水解产物生物利用度的影响。
Effect of degree of hydrolysis on the bioavailability of corn gluten meal hydrolysates.
作者信息
Jin Jian, Ma Haile, Zhou Cunshan, Luo Min, Liu Wan, Qu Wenjuan, He Ronghai, Luo Lin, Yagoub Abu El-Gasim A
机构信息
School of Food and Biological Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, P.R. China.
Key Laboratory for Physical Processing of Agricultural Products, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, P.R. China.
出版信息
J Sci Food Agric. 2015 Sep;95(12):2501-9. doi: 10.1002/jsfa.6982. Epub 2014 Nov 26.
BACKGROUND
Under the situation that the shortage of proteins and large quantity of corn gluten meal (CGM), which is a superior protein resource, is under-exploited, the enzymatic hydrolysis of CGM was employed to improve its bioavailability because of its special amino acid composition.
RESULTS
The apparent faecal digestibility and true faecal digestibility of all corn gluten meal hydrolysates (CGMHs) decreased in varied amounts compared with those of CGM. However, the protein efficiency ratio, the net protein ratio, the biological value, and the net protein utilization of the CGMHs with degree of hydrolysis (DH) of 4.94% and with DH of 10.06% increased significantly (P < 0.05). The results of in vitro gastro-intestinal digestion showed that the molecular weight distribution and amino acid composition among different DHs resulted in variances in bioavailability.
CONCLUSION
Partial hydrolysis of CGM can improve its bioavailability, providing a future protein supplement for protein resources.
背景
在蛋白质短缺且优质蛋白质资源玉米蛋白粉（CGM）大量未被充分利用的情况下，由于其特殊的氨基酸组成，采用酶解法水解CGM以提高其生物利用率。
结果
与CGM相比，所有玉米蛋白粉水解物（CGMHs）的表观粪便消化率和真粪便消化率均有不同程度下降。然而，水解度（DH）为4.94%和10.06%的CGMHs的蛋白质效率比、净蛋白比、生物价和净蛋白利用率显著提高（P<0.05）。体外胃肠消化结果表明，不同DHs之间的分子量分布和氨基酸组成导致生物利用率存在差异。
结论
CGM的部分水解可提高其生物利用率，为蛋白质资源提供了一种未来的蛋白质补充剂。
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