“粒粒橙”橙汁是一种果汁类酸性饮料,pH为3.46。一般认为,金黄色葡萄球菌适宜生长在pH6.0～8.0,水分较多,蛋白质和淀粉较丰富的食品中。而果汁的pH值较低,而且含有的糖度也较高,这些都能抑制某些微生物的发育繁殖。因此,在果汁饮料中检出金黄色葡萄球菌的可能性极少。而本文却从pH3.46的粒粒橙饮料中检出金黄色葡萄球菌。现将检测结果报告如下。1 材料方法1.1 样品来源 本县某厂生产的饮料,该饮料由粒粒橙、香精、蔗糖和过滤水混合而成,不作任何消毒,玻璃瓶装,样品由生产 “Granular orange” orange juice is a fruit juice acidic drink with a pH of 3.46. Generally believed that Staphylococcus aureus suitable growth in pH6.0 ~ 8.0, more water, protein and starch-rich foods. The low pH of fruit juice, but also the higher sugar content, which can inhibit the development of certain microorganisms. As a result, there is very little chance of detecting S. aureus in fruit drinks. In this article, S. aureus was detected from a granular orange drink at pH 3.46. The test results are reported below. 1 Materials Method 1.1 Sample Source A beverage produced in a factory in the county, the beverage is made of granule orange, essence, sucrose and filtered water without any sterilizing, glass bottling, sample production