Effects of temperature, pH and NaCl on protease activity in digestive tract of young turbot,Scophthalmus maximus[J]. 海洋湖沼学报(英文), 2006,24(3):300-306.
Muyan, C., Xiumei, Z., Tianxiang, G. et al. Effects of temperature, pH and NaCl on protease activity in digestive tract of young turbot,Scophthalmus maximus, ., Chin. J. Ocean. Limnol. 24, 300–306 (2006). https://doi.org/10.1007/PL00020776
Effects of temperature, pH and NaCl on protease activity in digestive tract of young turbot,Scophthalmus maximus[J]. 海洋湖沼学报(英文), 2006,24(3):300-306. DOI: 10.1007/PL00020776.
Muyan, C., Xiumei, Z., Tianxiang, G. et al. Effects of temperature, pH and NaCl on protease activity in digestive tract of young turbot,Scophthalmus maximus, ., Chin. J. Ocean. Limnol. 24, 300–306 (2006). https://doi.org/10.1007/PL00020776DOI:
Effects of temperature, pH and NaCl on protease activity in digestive tract of young turbot,Scophthalmus maximus
摘要
Abstract
The protease activity in digestive tract of young turbotScophthalmus maximum was studied
and the optimal pH
temperature and NaCl concentration were determined for different portions of the fish's internal organs. The optimal activity in the fish's stomach was at pH of 2.2
while that in the intestinal extracts was within the alkaline range from 9.5 to 10.0. In hepatopancreas
the optimal pH was in low alkalinity at 8.5. The optimal reaction temperature was above 40°C in stomach
intestine and hepatopancreas. With increasing temperature
the pH value increased in stomach
while in the intestine
an opposite tendency was observed due to combined effect of pH and temperature. NaCl concentration showed inhibitory impact on protein digestion in hepatopancreas. The main protease for protein digestion in turbot seemed to be pepsin. Moreover
the maximum protease activity in different segments of intestine existed in the hindgut.
关键词
Keywords
references
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