聯(lián)乙酰

The article briefly introduces the production of biacetyl and the relations of fermentation technology and biacetyl. 簡述了啤酒中雙乙酰的形成機(jī)制及發(fā)酵工藝與雙乙酰的關(guān)系,提出了在啤酒實(shí)際生產(chǎn)中雙乙酰含量的控制方法。

The applications of SKALAR brand interval flow analyser in the analysis of fermentation liquid and content of product biacetyl were introduced. 介紹利用SKALAR間隔流動分析儀對發(fā)酵液、成品雙乙酰含量的分析,并對SKALAR與GB法的分析結(jié)果進(jìn)行比較、分析。

METHODS Linezolid was prepared by the steps of substitution,reduction,acylation and condensation with biacetyl compond from the starting material 3,4-difluoronotrobenzene. 方法以3,4-二氟硝基苯為原料,經(jīng)取代、還原、酰化、再與側(cè)鏈雙乙酰化合物縮合得到目標(biāo)化合物。

METHODS Linezolid was prepared by the steps of substitution, reduction, acylation and condensation with biacetyl compond from the starting material 3,4-difluoronotrobenzene. 方法以3,4-二氟硝基苯為原料，經(jīng)取代、還原、酰化、再與側(cè)鏈雙乙酰化合物縮合得到目標(biāo)化合物。

Furthermore, we think the catalytic reaction in gas-solid phase is the superior developing trend and in this reaction,2,3-butylene-glycol should be replaced by cheap biacetyl. 本文認(rèn)為,2,3-二甲基吡嗪的合成發(fā)展趨勢應(yīng)采用氣固相催化反應(yīng)的方法,建議以價(jià)廉的丁二酮取代以往氣相法中以2,3-丁二醇為原料的路線。