Activity of peptidases and glycosidases of the digestive tract in some species of bony fish of Vietnam=Активность пептидаз и гликозидаз пищеварительного тракта у некоторых видов костистых рыб Вьетнама
28/03/23 04:41PM
Kuzmina, V V; Slynko, Elena E; Kulivatskaya, Ekaterina A; Karpova, Evgeniya P; Dinh Cu Nguyen. Morskoj biologicheskij zhurnal/Marine biological journal Vol. 7, Iss. 1, (2022): 55-64. DOI:10.21072/mbj.2022.07.1.05
Abstract:
For the first time, the activity and pH dependence of
digestive enzymes were studied in fish inhabiting the Mekong Delta: duskyfin
glassy perchlet Parambassis wolffii, smallscale croaker Boesemania microlepis,
catfish Pangasius macronema, and representatives of the family Cyprinidae.
Significant interspecific differences were revealed in the level of peptidase
and glycosidase activity providing hydrolysis of protein and carbohydrate food
components. The greatest interspecific differences are characteristic of
glycosidases: the level of enzymatic activity in Cyprinidae fish exceeds that
in P. wolffii by 13.6 times. The differences in the level of peptidase activity
in fish of different species are lower: in the case of the activity of stomach
enzymes in P. wolffii, the values are 1.8 times higher than those in P. macronema,
and in the case of total activity of stomach and intestinal enzymes in the same
species, the values are 1.5 times higher. The data obtained confirm the concept
that the digestive hydrolase activity depends on the fish feeding spectrum. The
activity of intestinal enzymes decreases more significantly in the acidic pH
zone than in the basic one. Consequently, acidification of the intestinal
environment will negatively affect the digestive processes in these fish
species.
(Source:https://www.proquest.com/scholarly-journals/activity-peptidases-glycosidases-digestive-tract/docview/2771950813/se-2?accountid=28030)