| Regulation of muscular glutamate metabolism by high-protein diet in broiler chicks. | |
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MedLine Citation:
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PMID: 21269365 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The major taste active component, glutamate (Glu), improves the taste of meat. In this study, we investigated the effect of a short-term high-protein (HCP) diet on the intramuscular free Glu content to improve the taste of meat. Furthermore, we elucidated how the muscle free Glu content was controlled by the HCP diet. Chicks (14 days old) were fed the control diet or HCP diet for 10 days. Plasma and muscle free amino acid concentrations, and activity and messenger RNA (mRNA) expression of muscle enzymes related to Glu metabolism were determined. Muscle free Glu content was increased (P < 0.01) by 51%. Activity and mRNA expression of glutaminase (GA), which is one of the major Glu-related enzymes, were significantly decreased (P < 0.05) in the HCP group because of feedback inhibition. The mRNA expression of lysine α-ketoglutarate reductase (LKR), which is the enzyme involved in lysine (Lys) degradation and Glu production, was significantly increased (P < 0.001) in the HCP group. These results suggest that short-term dietary HCP feeding is an effective treatment for improving the taste of meat. Furthermore, our results suggest that the free Glu content in muscle is regulated by GA and LKR. |
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Authors:
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Hiroyuki Kobayashi; Atsushi Eguchi; Wataru Takano; Masahiro Shibata; Motoni Kadowaki; Shinobu Fujimura |
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Publication Detail:
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Type: Journal Article Date: 2010-10-13 |
Journal Detail:
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Title: Animal science journal = Nihon chikusan Gakkaihō Volume: 82 ISSN: 1740-0929 ISO Abbreviation: Anim. Sci. J. Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-01-28 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 100956805 Medline TA: Anim Sci J Country: Australia |
Other Details:
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Languages: eng Pagination: 86-92 Citation Subset: IM |
Copyright Information:
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© 2010 The Authors. Journal compilation © 2010 Japanese Society of Animal Science. |
Affiliation:
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Graduate School of Science and Technology, Niigata University, Niigata National Agriculture Research Centre for Western Region, Shimane, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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