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aqi96

至尊木虫 (著名写手)

[求助] 怎样配制无菌的TBST ?

TBS (Tris-buffered saline)当然可以无菌配制了。但是加入Tween-20之后,还能高压灭菌么? 用滤膜除菌,能够除掉所有的微生物,包括病毒、细菌和真菌么?谢谢!
如果你知道答案,请给出支持你的答案的网站或者文献支持。谢谢!

[ Last edited by aqi96 on 2012-10-25 at 07:45 ]
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Amenis

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【答案】应助回帖

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aqi96: 金币+2, ★★★很有帮助 2013-06-19 00:03:11
1) 用滤膜除菌,不能够除掉所有的微生物,0.22 um孔径只能去除细菌和真菌么,而病毒、支原体等滤不掉。
2)加入Tween后可以高压消毒,无论是-20、-60还是-80型号,都可高压。只是你非要文献或网站费了我半天的search,看来您是位严谨的研究者。

请看这个网站的一段:
3. Fluid Casein Digest-Soy Lecithin-Polysorbate 20 Medium
Pancreatic Digest of Casein 20.0 g
Soy Lecithin 5.0 g
Polysorbate 20 40 mL
Water 960 mL
Dissolve the pancreatic digest of casein and soy lecithin in 960 mL of water, heating in a water batch at 48 - 50 OC for about 30 min. to effect solution. Add 40 mL of Polysorbate 20. Mix, and dispense as desired and sterilize in an autoclave at 121 OC for about 15min.
reference
http://gmponblog.vinvarun.biz/20 ... count-bacteria.html
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2楼2013-06-17 10:53:58
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