啤酒泡沫稳定性研究概述

泡沫是啤酒的重要特征之一。啤酒泡沫稳定性的五种测定方法中，Sigma法和Rudin法因设备较简、结果较准而被广为重视。啤酒泡沫成分中蛋白多肽类、异释草酮、类黑素、多糖，以及适量的酒精对泡沫的稳定有利；金属离子能提高添加酒花啤酒的稳定性，但过量会降低风味；脂类则破坏泡沫稳定性。通过原辅料、茵种、糖化、发酵、包装工艺，以及添加剂的选择控制，提高啤酒泡沫的稳定性。

Research on Stability of Beer Foam

Foam is one of the important characteristics of beer. In five determination methods of beer foam sta bility, Sigma and Rudin receive wide attention for their use of simple equipments and more accurate results. Some beer foam components are propitious to foam stability such as protein peptide, isohumulone, brown pig ment, polysaccharide, and fitting concentration of alcohol. Metal ions can enhance the stability of beer with hops, but excessive amount will blemish beer flavor. Lipids destroy the foam stability. Beer foam stability can be improved through selecting raw materials, yeast, and technics of saccharification, fermentation, packaging as well as choosing additives.