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xijihu木虫 (著名写手)
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| 一些季铵盐如溴代十六烷基三甲铵(CTAB)和十六烷基盐酸吡啶(CPC)等能与茶叶多糖在酸性、中性或弱碱性条件下形成不溶于水的络合物，从而达到将其与其他组分分离的目的 |
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wshbinzhang
铁杆木虫 (知名作家)
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xijihu(金币+6,VIP+0):good 2-15 11:23
xijihu(金币+6,VIP+0):good 2-15 11:23
| Under the conditions of acidity, neutral and alkalescence, some kinds of quaternary ammonium salts, such as cetyl trimethyl ammonium bromide (CTAB) and cetyl pyridine hydrochloride (CPC), can react with tea polysaccharide to form complex compounds. Because the resulting complex compounds hardly dissolve water, the quaternary ammonium salts can be distinguished from others. |
2楼2009-02-13 15:29:31
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xijihu(金币+3,VIP+0):xiexie 2-15 11:24
xijihu(金币+3,VIP+0):xiexie 2-15 11:24
| Under the conditions of acidity, neutral and alkalescence, some kinds of quaternary ammonium salts, such as cetyl trimethyl ammonium bromide (CTAB) , cetyl pyridine hydrochloride (CPC),etc., can react with tea polysaccharide to form insoluble complex compounds,and thereby be separated from other components. |
3楼2009-02-13 16:45:42