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Occurrence of Biogenic Amines in Miso, Japanese Traditional Fermented Soybean Paste.
MedLine Citation:
PMID:  23140362     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
  The objective of this study was to analyze overall contents of biogenic amines in Miso and thereby evaluate the safety of the food. Through HPLC analysis of 22 different Miso products, it was found that most samples had low biogenic amine contents. However, some samples contained both histamine and tyramine close to hazardous levels of the amines, which indicate that the amounts of biogenic amines in Miso are not completely within the safe level for human health. Meanwhile, the biogenic amine contents showed no clear relationship with physicochemical parameters, whereas they revealed a good relationship with the ratio of soybean to other grains used in raw material. Thus, it turned out that biogenic amine contents in Miso are primarily affected by the ratio of raw ingredients, especially soybeans. The aerobic plate counts of Miso samples ranged from 3 to 8 Log CFU/g, and all the strains isolated from Miso samples were found to produce biogenic amines. Most strains were identified to be Bacillus subtilis, often regarded as the predominant contaminant bacteria in Miso, and highly capable of producing tyramine and spermine. Taken together, therefore, this study suggests that variability of biogenic amine contents in Miso are primarily attributed to the ratio of raw ingredients in the food that affects the relative contribution level of bacterial contaminants to the contents. Practical Application:  Biogenic amines are harmful nitrogenous compounds. The amounts of biogenic amines in Miso are less when the ratio of soybean to other grains is lower in raw materials. This information would be helpful for consumers at the time of purchasing Miso product.
Authors:
Bo Young Byun; Jae-Hyung Mah
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-9
Journal Detail:
Title:  Journal of food science     Volume:  -     ISSN:  1750-3841     ISO Abbreviation:  J. Food Sci.     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-12     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:
© 2012 Institute of Food Technologists®
Affiliation:
Authors Byun and Mah are with Dept. of Food and Biotechnology, Korea Univ., Sejong 339-700, Korea. Direct inquiries to author Mah (E-mail: nextbio@korea.ac.kr).
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