solven 中文意思是什麼
solven
解釋
瑟爾文-
4. m nrmaratri or wo tw bobo or or anct the mp of it ( 1pebo is the by puttin soso bo normal heptan solven, with normal hexan added as coha and 10mow solution of m usto to sawthe. ha the bo through the meto of m and dyfor laser scatw, it is w tha 10 " mow hhophg of 40 % swn degree can form good boion whe the ratio of normal heptane : normal hexanl w hom 8 : 2 to 6 : 4
Wo型hhophg微乳液的制備及性質研究門）皂化度為40的lx10 「 mol l的hhophg在正庚烷與正己醇用量為8 ： 2 6 ： 4 （體積比）的范圍內均能夠形成良好的微乳液，正己醇加入過多或過少都不利於m g微乳液的形成。 -
In order to study the influence factors of aoa of rose flowers, the effects of drying and extraction methods on the aoa of rose flowers were investigated. the results indicated that drying after high - temperature short - time pretreatment was rather effective to maintain their aoa ; the aoa of water extracts was stronger when the temperature was raised from 25 to 100 ; by using orthogonal test, the optimum extraction conditions of rose flowers were : solvent - 75 % ethanol ; ratio of material and solven - 1 : 10 ; extraction times - three times with 24 h at one time, at the room temperature. the extracts obtained by 75 % ethanol were fractionatedly extracted with petroleum, diethyl ether, ethyl acetate and n - butanol in turn, and the various fractions " aoa were analyzed
為了探討玫瑰花抗氧化活性的影響因子，比較了不同乾燥方法、提取方法對其抗氧化活性的影響，發現：經短時高溫處理后再進行乾燥有利於較好地保持玫瑰花的抗氧化活性；以水作溶劑提取時， 25 100范圍內水提液的抗氧化活性隨著溫度的升高而增強；通過正交實驗篩選得到常溫下玫瑰花抗氧化活性物質的最佳提取方法為： 75乙醇為溶劑，液料比1 ： 10 ，提取3次，每次24h ； 75乙醇提取物依次用石油醚、乙醚、乙酸乙酯、正丁醇等有機溶劑進行兩相分部萃取，發現玫瑰花的抗氧化活性物質主要存在於乙酸乙酯部，說明玫瑰花抗氧化活性主要成分可能是單寧類、黃酮苷類和原花色素類化合物； 4
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