一些南极鱼类的抗冻性

Freezing resistance in some Antarctic fishes.

作者信息

DeVries A L, Wohlschlag D E

出版信息

Science. 1969 Mar 7;163(3871):1073-5. doi: 10.1126/science.163.3871.1073.

DOI:10.1126/science.163.3871.1073

Abstract

Measurements of serum freezing points in three Antarctic marine fishes indicated that they do not freeze in the -1.87 degrees C seawater because their blood is isosmotic to seawater. Concentrations of sodium chloride, urea, and free amino acids in the serum accounted for only half of the freezing-point depression of the serum. A protein containing carbohydrate was isolated which accounted for 30 percent of the freezing-point depression of the serum.

摘要

对三种南极海鱼血清冰点的测量表明，它们不会在-1.87摄氏度的海水中冻结，因为它们的血液与海水等渗。血清中氯化钠、尿素和游离氨基酸的浓度仅占血清冰点降低值的一半。分离出一种含糖蛋白质，它占血清冰点降低值的30%。