斜面培养基接种大肠杆菌后的生长情况怎样描述

斜面培养基接种大肠杆菌后的生长情况怎样描述
2025-03-28 06:26:07
推荐回答(4个)
回答1:

斜面培养基接种大肠杆菌后的生长情况要看菌落特征,半固体培养基穿刺接种是好氧性。

向容器内加入所需水量的一部分,按照培养基的配方,称取各种原料,依次加入使其溶解,最后补足所需水分。对蛋白胨、肉膏等物质,需加热溶解,加热过程所蒸发的水分,应在全部原料溶解后加水补足。

配制固体培养基时,先将上述已配好的液体培养基煮沸,再将称好的琼脂加入,继续加热至完全融化。并不断搅拌,以免琼脂糊底烧焦。



扩展资料:

已过滤的培养基应进行分装。如果要制作斜面培养基,须将培养基分装于试管中。如果要制作平板培养基或液体、半固体培养基,则须将培养基分装于锥形瓶内。

分装时,一手捏松弹簧夹,使培养基流出,另一只手握住几支试管或锥形瓶,依次接取培养基。分装时,注意不要使培养基粘附管口或瓶口,以免浸湿棉塞引起杂菌污染。

分装完毕后,需要用棉塞堵住管口或瓶口。堵棉塞的主要目的是过滤空气,避免污染。棉塞应采用普通新鲜、干燥的棉花制作,不要用脱脂棉,以免因脱脂棉吸水使棉塞无法使用。

回答2:

生长密集还是稀疏,是否延所划斜线生长,菌落表面光泽度,菌落形态(斜面菌落生长形态见附图),单个菌落的大小,形状,颜色,隆起程度

回答3:

斜面培养基主要用于菌种的保存,描述细菌生长状况用平板划线(菌落特征),半固体培养基穿刺接种(细菌运动性,好氧性)。

回答4:

菌落的大小、多少、形态等

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