Document Detail

Polyphenol oxidase and peroxidase in fruits and vegetables.
MedLine Citation:
PMID:  6794984     Owner:  NLM     Status:  MEDLINE    
Polyphenol oxidases and peroxidases are among the most studied enzymes in fruits and vegetables. Owing to the deleterious effects of discoloration and off-flavor formation induced by their actions, these enzymes have not ceased to be a matter of concern to food technologists, while their versatility as catalyst and their diversity as protein present a challenge to the biochemist. This article gives an account on the present state of knowledge in this field. The occurrence of polyphenol oxidases and peroxidases in food and food raw materials, and their role and importance in food processing are briefly outlined. Results of biochemical research including catalytic properties, substrate specificity, susceptibility towards pH and temperature, action of inhibitors, isolation, purification, and characteristics of the enzymes are given, with special emphasis on recent achievements based on high resolution separation and isoenzyme techniques. Finally, the behavior of polyphenol oxidase and peroxidase in selected major groups of fruits and vegetables is discussed. Some contradictions found in the literature are pointed out and some questions that have not been given the necessary attention by researchers so far are mentioned.
L Vámos-Vigyázó
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Critical reviews in food science and nutrition     Volume:  15     ISSN:  1040-8398     ISO Abbreviation:  Crit Rev Food Sci Nutr     Publication Date:  1981  
Date Detail:
Created Date:  1982-01-09     Completed Date:  1982-01-09     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8914818     Medline TA:  Crit Rev Food Sci Nutr     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  49-127     Citation Subset:  IM    
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MeSH Terms
Basidiomycota / enzymology
Catechol Oxidase / antagonists & inhibitors,  isolation & purification,  metabolism*
Food Handling
Hot Temperature
Hydrogen-Ion Concentration
Isoenzymes / metabolism
Peroxidases / antagonists & inhibitors,  isolation & purification,  metabolism*
Reg. No./Substance:
0/Isoenzymes; EC Oxidase; EC 1.11.1.-/Peroxidases

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