Document Detail

Thermal conversion of trimethylamine-N-oxide to trimethylamine and dimethylamine in squids.
MedLine Citation:
PMID:  4040104     Owner:  NLM     Status:  MEDLINE    
The levels of dimethylamine-nitrogen (DMA-N), trimethylamine-nitrogen (TMA-N) and trimethylamine-N-oxide-nitrogen (TMAO-N) were determined in five species of dried squid. Each sample contained extremely high levels of TMAO-N (2558-8064 ppm) and moderate amounts of TMA-N (121-503 ppm) and DMA-N (124-373 ppm). Over 90% of TMAO-N in squid was converted to TMA-N and DMA-N after heating at 200 degrees C for 1 hr; approximately 50% of the volatile TMA-N and DMA-N was lost during the course of the heating. The thermal conversions were accelerated by heat, and possibly involved catalysis by certain tissue constituents. Squids are a popular seafood in most oriental countries, but before appearing on the market they are subjected to a long food-processing procedure. Therefore, a high concentration of TMAO in squids is an important problem, for food technology as well as toxicology.
J K Lin; D C Hurng
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association     Volume:  23     ISSN:  0278-6915     ISO Abbreviation:  Food Chem. Toxicol.     Publication Date:  1985 Jun 
Date Detail:
Created Date:  1985-08-21     Completed Date:  1985-08-21     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8207483     Medline TA:  Food Chem Toxicol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  579-83     Citation Subset:  IM    
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MeSH Terms
Decapodiformes / analysis*
Dimethylamines / analysis*
Food Analysis
Food Handling
Hot Temperature*
Methylamines / analysis*,  metabolism
Reg. No./Substance:
0/Dimethylamines; 0/Methylamines; 1184-78-7/trimethyloxamine; 124-40-3/dimethylamine; 75-50-3/trimethylamine

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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