用什么培养基可以培养出尽可能多的细菌

2025-03-16 17:08:28
推荐回答(2个)
回答1:

严格的无菌操作:采取待检材料时的无菌操作,不论任何待检材料,必须在无菌操作下,用灭菌的器械采取,样品放入灭菌的容器中待检.
接种培养基时的无菌操作:接种用的器械如接种环、棉棒或其他用具,在取材接种之前必须予以灭菌,接种培养基时,要尽一切可能防止外界微生物的进入.
创造适合细菌生长发育的条件:选择适宜的培养基,如果培养基选择不当,则材料中的细菌就可能难以分离.为此,再从待检材料中进行性质不明的细菌初次分离培养时,一般尽可能地多用几种培养基,包括普通培养基和特殊培养基(如含有特殊营养物质的培养基,适于厌氧菌生长的培养基等)
考虑细菌所需的大气条件:对于性质不明的细菌材料最好多接几种培养基,分别放在普通大气,无氧环境内或含有5%-10%二氧化碳的容器中培养.
要考虑培养温度和时间:一般病原菌放在35-37℃温度培养即可,24-48小时培养后大多数病原菌都可以生长出来.少数菌须培养较长时间(1-2周)后,可见其生长.

回答2:

营养成分越全面,能够生长的细菌也越多。
用葡萄糖、蛋白胨 、牛肉浸粉(或浸膏)、氯化钠配制的微生物培养基就是营养最全面的全营养培养基。可以是液体培养基,也可以加入琼脂制成固体或半固体培养基。绝大多数细菌都可以在这种培养基中生长。

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