再采用顶空气相色谱法检测所得苹果多酚纯化物中正己烷、苯、甲苯、对二甲苯、邻二甲苯、苯乙烯等有机溶剂残留均低于检测限。

There were not n-hexane, benzene, toluene and xylene, o-xylene, styrene and other organic solvent residue in the purification of apple polyphenol by the headspace gas chromatograph.

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目前的研究多对肝卵圆细胞进行活化、分离纯化、培养鉴定，再通过各种方法将其诱导分化为胰岛细胞。

The present researches were to active, separate, purify, cultivate and identify the HOCs, then all kinds of methods were used to induce it to differentiate into islet cells.

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采用弱碱溶解蜂胶再酸化萃取的方法纯化样品，用返滴法测定，以水杨酸作为对照品检测样品中游离酸含量。

Propolis was dissolved in alkalescent condition and filtered. The filtrate was acidified and extracted after a degrease step. The purified sample was finally determined by back-titration.

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