Document Detail

Supplementation of Alkaline Phytase (Ds11) in Whole-Wheat Bread Reduces Phytate Content and Improves Mineral Solubility.
MedLine Citation:
PMID:  21623782     Owner:  NLM     Status:  Publisher    
  In this study, alkaline phytase was added to whole-wheat bread and the phytate content and mineral profiles were compared to commercially available acidic phytase. At neutral pH, some phytate (approximately 20%) was degraded by endogenous phytase in wheat flour, while 40% of phytate was hydrolyzed by alkaline phytase DS11 and a 35% reduction was observed with acidic phytase. Most of the enzymatic activity occurred during the proofing stage, and the rate of reaction depended on pH. DS11 phytase effectively degraded the phytate level within a 30 min treatment at pH 7; however, at least 60 min was needed with acidic phytase to achieve the same hydrolysis level. Mineral profiles were also dramatically affected by the phytate reduction. The biggest increase was observed in Fe(2+) by the phytase treatment. The Fe(2+) content increased 10-fold at pH 7 and 8-fold at pH 5 with alkaline phytase DS11. Alkaline phytase DS11 was shown to be effective at phytate reduction in whole-wheat bread preparation. Additionally, phytate degradation enhanced the mineral availability of bread.
Yun-Jong Park; Jiwon Park; Ki-Hwan Park; Byung-Chul Oh; Joong-Hyuck Auh
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-5-27
Journal Detail:
Title:  Journal of food science     Volume:  -     ISSN:  1750-3841     ISO Abbreviation:  -     Publication Date:  2011 May 
Date Detail:
Created Date:  2011-5-31     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0014052     Medline TA:  J Food Sci     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2011 Institute of Food Technologists®
Authors Yun-Jong Park, Jiwon Park, Ki-Hwan Park, and Auh are with Dept. of Food Sci. & Technol., Chung-Ang Univ., Ansung 456-756, Korea. Author Oh is with Lee Gil Ya Cancer and Diabetes Inst., Gachon Univ. of Medicine & Science, Incheon 406-840, Korea. Direct inquiries to Auh (E-mail: ).
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