Barbour Elie K, Nabbut Nassim H, Frerichs Wayne M, Al-Nakhli Habeeb M
Ministry of Agriculture and Water, Regional Agriculture and Water Research Center, Animal Production and Health Section, P.O. Box 17285, Riyadh, Saudi Arabia 11484.
J Food Prot. 1984 Nov;47(11):838-840. doi: 10.4315/0362-028X-47.11.838.
Twenty (10%) of 200 milk samples collected from different individual camels inhibited growth of one or more of six pathogenic test organisms in a filter-paper disk assay. The milk samples with inhibitory properties scored zero in the California Mastitis Test. The percentages of milk samples which inhibited Clostridium perfringens , Staphylococcus aureus , Shigella dysenteriae and Salmonella typhimurium were 7.5, 4.0, 2.0 and 1%, respectively. None of the 200 samples inhibited Bacillus cereus or Escherichia coli . Five milk samples inhibited growth of two test organisms and two samples inhibited growth of three organisms. Inhibition zone diameters ranged from 13.5 mm to 22.0 mm (average of 15 mm) using a disk of 12.5 mm in diameter. The average amount of lysozyme in the whey of 58 samples of camel's milk was 288 μg/100 ml. The average lysozyme content of the 20 samples showing growth inhibition of one or more test organisms was 648 μg/100 ml, significantly higher (P<0.01) than the average in the 38 samples (62.6 μg/100 ml) that had no inhibitory effect. There was a negative correlation (r= -0.669) between lysozyme content in the whey of milk samples (y) and the stage of lactation of the camels (x) with the following regression equation: y = -2.86x + 665.8.
从不同个体骆驼采集的200份牛奶样本中，有20份（10%）在滤纸片法检测中抑制了六种致病性测试微生物中一种或多种的生长。具有抑制特性的牛奶样本在加利福尼亚乳房炎检测中得分为零。抑制产气荚膜梭菌、金黄色葡萄球菌、痢疾志贺菌和鼠伤寒沙门氏菌的牛奶样本百分比分别为7.5%、4.0%、2.0%和1%。200份样本中没有一份抑制蜡样芽孢杆菌或大肠杆菌。五份牛奶样本抑制了两种测试微生物的生长，两份样本抑制了三种微生物的生长。使用直径为12.5毫米的滤纸片，抑菌圈直径范围为13.5毫米至22.0毫米（平均15毫米）。58份骆驼奶乳清中溶菌酶的平均含量为288微克/100毫升。对一种或多种测试微生物生长有抑制作用的20份样本中溶菌酶的平均含量为648微克/100毫升，显著高于（P<0.01）无抑制作用的38份样本的平均值（62.6微克/100毫升）。牛奶样本乳清中的溶菌酶含量（y）与骆驼的泌乳阶段（x）之间存在负相关（r = -0.669），回归方程如下：y = -2.86x + 665.8。
