高考问答brembo四活塞卡钳:请求英语高手 急救！！！！
来源：百度文库 编辑：高考问答 时间：2024/05/11 19:54:24
〔概要〕 啤酒发酵期间，酵母利用麦芽汁中营养物质转化为各种代谢产物，其中主要产物为乙醇和二氧化碳，此外还产生少量的代谢副产物。如联二酮类、高级醇类、酯类、有机酸类、醛类和含硫化合物等。这些代谢副产物的形成对啤酒的成熟和产品的风味有很大的影响。如双乙酰具有馊饭味，是造成啤酒不成熟的主要原因 。本文是我在南通大富豪啤酒厂实习期间对啤酒生产的了解，本文主要是对双乙酰的论述。
The beer ferments a period, leaven's making use of the nourishment material in the malt juice a conversion is various metabolism outcome, among them staple for ether and carbon dioxide, still produce jot in addition of metabolize a vice- outcome.If unite two 酮s, deluxe 醇 , esters, organic acids, 醛s and contain sulphur compound etc..These tastes of formation's maturities to beer and product which metabolize a vice- outcome contain very great influence.If the double B 酰 has 馊 rice flavor, resulting in the beer not mature main reason.This text is the understanding that I produce to the beer at the south period of the multimillionaire beer factory practice, this text mainly is to the treatise of double B 酰 .