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300 bloom 是什么意思
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gelatine (Type A from porcine skin, 300 Bloom, Sigma Aldrich, isoelectric point (pI) = 8 其中300 bloom 是什么意思 分子量？规格？ |
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小木虫: 金币+0.5, 给个红包，谢谢回帖
尘埃momo: 金币+5 2013-09-26 20:40:21
小木虫: 金币+0.5, 给个红包，谢谢回帖
尘埃momo: 金币+5 2013-09-26 20:40:21
| Bloom is a test to measure the strength of a gel or gelatin. The test was originally developed and patented in 1925 by O. T. Bloom. The test determines the weight (in grams) needed by a probe (normally with a diameter of 0.5 inch) to deflect the surface of the gel 4 mm without breaking it. The result is expressed in Bloom (grades). It is usually between 30 and 300 Bloom. This method is most often used on soft gels. To perform the Bloom test on gelatin, a 6.67% gelatin solution is kept for 17-18 hours at 10°C prior to being tested. |
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