牛肉膏是用新鲜牛肉经过剔除脂肪、消化、过滤、浓缩而得到的一种棕黄色至棕褐色的膏状物。 在当中它起的主要作用是补充蛋白胨以及其它氮源的营养不足。一般的用量为0.3%~0.5%。 蛋白胨用新鲜牛骨及牛肉混合提取,经过消化、过滤、浓缩、喷雾干燥而得到的一种浅黄色至类白色的干燥粉末。易溶于水,水溶液呈淡黄色。 (责任编辑:大汉昆仑王) |
牛肉膏蛋白胨培养基的牛肉膏和蛋白胨是两种什
关键词: 牛肉膏 蛋白胨 培养基来源: 互联网
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