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    Abstract
2014 (Vol. 6, Issue: 2)
Article Information:

Effect of Organic Nitrogen Source on Angiotensin I Converting Enzyme (ACE) Inhibitory Peptides Fermented by Lactobacillus bulgaricus LB6 from Goat Milk

Guowei Shu, Hui Yang, He Chen, Zhe Ji and Hongni Xing
Corresponding Author:  Guowei Shu 

Key words:  ACE inhibitory peptide, casein hydrolyses organic nitrogen source, casein peptone, goat milk, Lactobacillus bulgaricus , soybean peptone, whey powder
Vol. 6 , (2): 221-227
Submitted Accepted Published
September 24, 2013 October 10, 2013 February 10, 2014
Abstract:

Angiotensin I Converting Enzyme (ACE) plays an important physiological role in the regulation of hypertension. ACE inhibitors can lower hypertension. Lactic acid bacteria are known to produce ACE inhibitors during fermentation. Effect of fermentation time and organic nitrogen source including whey powder, casein hydrolyses, casein peptone, soybean peptone and casein on ACE inhibitory peptides fermented from goat milk by Lactobacillus bulgaricus LB6 was investigated using single factor test. The adding of whey powder and casein hydrolyses were both 0.50, 0.60, 0.70, 0.80 and 0.90%, casein peptone and soybean peptone were both 0.10, 0.30, 0.50, 0.70 and 0.90%, casein was 0.10, 0.20, 0.30, 0.40 and 0.50%, respectively. The results were as follows: The optimal fermentation time for ACE inhibitory peptide was 12 h, whey powder, casein peptone, soybean peptone and casein could promote ACE inhibition significantly increase (p<0.05) and optimal concentration was 0.70, 0.90, 0.30 and 0.20%, respectively. Casein hydrolyses could promote growth of L. bulgaricus LB6, but inhibit the production of ACE inhibitory peptide.
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  Cite this Reference:
Guowei Shu, Hui Yang, He Chen, Zhe Ji and Hongni Xing, 2014. Effect of Organic Nitrogen Source on Angiotensin I Converting Enzyme (ACE) Inhibitory Peptides Fermented by Lactobacillus bulgaricus LB6 from Goat Milk.  Advance Journal of Food Science and Technology, 6(2): 221-227.
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ISSN (Online):  2042-4876
ISSN (Print):   2042-4868
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