单词 | phosphatase |
释义 | phosphatasen. Biochemistry. Any of a group of enzymes which bring about the synthesis or hydrolysis of esters of phosphoric acid, usually in a specified (acid or alkaline) environment. ΘΚΠ the world > life > biology > substance > process stimulators or inhibitors > other stimulators or inhibitors > [noun] styptica1400 carrier1844 luciferase1888 luciferin1888 urease1892 peroxidase1899 protease1903 renin1903 phenolase1907 proteinase1907 phytase1908 lecithinase1910 uricase1910 phosphatase1912 prunase1912 phenoloxidase1913 oxytocin1927 phosphomonoesterase1932 androgen1936 phosphorylase1939 slow reacting substance1939 phospholipase1945 plasmin1945 bradykinin1949 nitroreductase1953 cytostatic1964 oncogen1967 autoinducer1968 1912 Chem. Abstr. 6 2084 Expts. with pepsin, trypsin, and animal organ ext[ract]s. failed to show conclusively the presence of phosphatase. 1951 E. S. West & W. R. Todd Textbk. Biochem. xiv. 471 The acid and the alkaline phosphatases of serum are so called because of optimum activity at an acid and at an alkaline pH respectively. 1973 B. J. Williams Evol. & Human Origins iv. 67/1 Red cell acid phosphatase provides a good illustration of the fact that alleles at a single locus can produce a ‘continuous’ trait in the manner described. 2000 Sci. Amer. June 60/2 Kinases and phosphatases control most activities in cells. If one kinase activates a protein, some phosphatase will be charged with inactivating that protein. Compounds phosphatase test n. a test for the presence of phosphatases (destroyed by pasteurization), applied to dairy products to determine whether they have been adequately pasteurized. ΘΚΠ the world > food and drink > farming > animal husbandry > dairy farming > [noun] > tests on animal or produce herd-testing1911 test1928 phosphatase test1933 herd-test1962 1933 H. D. Kay & W. R. Graham in Jrnl. Dairy Res. 5 70 If..the cream was pasteurised, its phosphatase content was completely or almost completely destroyed. This suggested to us the possibility that the phosphatase test might also be used for determining whether a given sample of butter had been made from fresh or from pasteurised cream. 1960 H. F. Judkins & H. A. Keener Milk Production & Processing xiv. 256 The phosphatase test is very sensitive and will show very small variations in the time and temperature of pasteurization. 2001 Jrnl. Dairy Sci. 84 1959 The objective of this study was to determine the effects of dissolved CO2 in milk on the performance of four important routine testing methods: antibiotic residue test, freezing point test, infrared milk component analysis, and alkaline phosphatase test. This entry has been updated (OED Third Edition, March 2006; most recently modified version published online March 2022). < |
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