| Generation of free amino acids and gamma-aminobutyric acid in water-soaked soybean by high-hydrostatic pressure processing. | |
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MedLine Citation:
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PMID: 20043632 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The effects of high-hydrostatic pressure processing (HPP) on soybean cotyledon as a cellular biological material were investigated from the viewpoints of the cell structure and enzyme reaction system. Damage to cell structure was evaluated by measuring dielectric properties using the Cole-Cole arc, the radius of which decreased as pressure level increased. Results suggested that cell structure was damaged by HPP. The distribution of free amino acids was measured after HPP (200 MPa) of soybean soaked in water or sodium glutamate (Glu) solution. HPP resulted in high accumulation of free amino acids in water-soaked soybean, due to proteolysis. HPP of soybean in Glu solution caused higher accumulation of gamma-aminobutyric acid, suggesting that both proteolysis and specific Glu metabolism were accelerated by HPP. We concluded that HPP partially degraded cell structure and accelerated biochemical reactions by allowing enzyme activities to remain. These events can be considered "high-pressure induced transformation" of soybean. |
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Authors:
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Shigeaki Ueno; Toru Shigematsu; Takae Watanabe; Kanako Nakajima; Mina Murakami; Mayumi Hayashi; Tomoyuki Fujii |
Publication Detail:
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Type: Evaluation Studies; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of agricultural and food chemistry Volume: 58 ISSN: 1520-5118 ISO Abbreviation: J. Agric. Food Chem. Publication Date: 2010 Jan |
Date Detail:
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Created Date: 2010-01-20 Completed Date: 2010-03-25 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0374755 Medline TA: J Agric Food Chem Country: United States |
Other Details:
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Languages: eng Pagination: 1208-13 Citation Subset: IM |
Affiliation:
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Graduate School of Agricultural Science, Tohoku University, Sendai 981-8555, Japan. shigeakiu@bios.tohoku.ac.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Amino Acids
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analysis* Food Handling / methods* Hydrostatic Pressure Plant Extracts / analysis* Soybeans / chemistry* gamma-Aminobutyric Acid / analysis* |
| Chemical | |
Reg. No./Substance:
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0/Amino Acids; 0/Plant Extracts; 56-12-2/gamma-Aminobutyric Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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