Effect of non-fat dry milk on recovery of staphylococcal thermonuclease from foods
作者:
C. E. Park,
H. B. El Derea,
M. K. Rayman,
期刊:
Canadian Journal of Microbiology
(NRC Available online 1979)
卷期:
Volume 25,
issue 1
页码: 44-46
ISSN:0008-4166
年代: 1979
DOI:10.1139/m79-007
出版商: NRC Research Press
数据来源: NRC
摘要:
Modification of the method of Tatiniet al. (1976) by addition of non-fat dry milk (NFDM) to food samples and subsequent acid precipitation at pH 3.8 enhanced the recovery of staphylococcal thermonuclease (TNase) from most of 37 foods tested. The modified TNase assay method allowed detection of 10 ng (0.002 units) of the enzyme per gram of each of the following foods: ground beef, boiled egg products, whey powder, fruit-containing yogurt, dressings and spreads, potato and egg salads, and pastas, all of which gave false-negative results without NFDM.
点击下载:
PDF
(289KB)
返 回