The effect of ascorbate on proteolytic enzyme activities in fish
Dabrowski, K.; Köck, G.
International Journal for Vitamin and Nutrition Research. Internationale Zeitschrift für Vitamin- und Ernahrungsforschung. Journal International de Vitaminologie et de Nutrition 59(2): 157-160
1989
ISSN/ISBN: 0300-9831 PMID: 2674049 Document Number: 340421
In vitro studies showed that an ascorbic acid concentration of 15 mM depressed the trypsin activity in three fish species by 50%, whereas dehydroascorbic acid and ascorbic sulfate did not inhibit trypsin or chymotrypsin activities. However, this inhibitory action is unlikely in vivo because ascorbic acid is rapidly oxidized in the digestive tract content to the dehydroascorbic acid.