Effects of CD2+, CU2+, PB2+and ZN2+on activities of some digestive enzymes in carp(Cyprinus carpio L.)

Autor:	K. László, Márta Kotormán, J. Nemcsók, L.M. Simon
Rok vydání:	2000
Předmět:	inorganic chemicals chemistry.chemical_classification Environmental Engineering Chymotrypsin biology Triacylglycerol lipase General Medicine biology.organism_classification Trypsin Enzyme chemistry Biochemistry biology.protein Carboxypeptidase A medicine Lipase Carp Digestion medicine.drug
Zdroj:	Journal of Environmental Science and Health, Part A. 35:1517-1526
ISSN:	1532-4117 1093-4529
DOI:	10.1080/10934520009377052
Popis:	The effects of haevy metals (Cd2+, Cu2+, Pb2+ and Zn2+) on activities of carp trypsin, α‐chymotrypsin, carboxypeptidase A and lipase were studied. The enzymes were isolated from the gastrointestinal tract and the effects of metal ions were investigated during incubation for 5 min. The presence of Cd2+ did not influence the activities of CPA and trypsin and 10–20 % inhibiton was observed with α‐chymotrypsin and lipase. Cu2+ only slightly influenced the trypsin and lipase activities, whereas the α‐chymotrypsin activity was decreased. All enzyme activities decreased at higher Zn2+ concentrations. The inhibition was most pronounced at α‐chymotrypsin (more than 50%). With the exception of trypsin, Pb2+ inhibited the activities of the investigated enzymes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6b68d5cbe24cb2518b20d1b25239ec32 https://doi.org/10.1080/10934520009377052 Zobrazit plný text záznamu