啤酒产生和清除自由基的双重性质

Dual Characters of Beer——Yielding and Scavenging Free Radicals

本文利用自旋捕集技术,采用电子自旋共振(ESR)仪研究了啤酒经保温产生自由基以及啤酒自身清除二苯代苦味酰肼自由基(DPPH)的过程,说明啤酒具有产生和清除自由基的双重性质。文章初步探讨了啤酒酿造及贮存过程中易于形成自由基和发生自由基链反应的工艺阶段,以及清除自由基的物质种类及来源。

The processes of yielding free radicals （FR） by incubated beer and scavenging 2,2Miphenyl- 1 -picrylhydrazyl （DPPH） radical by fresh beer are studied by electron spin resonance spectroscopy with spin-trapping technology, which implies that beer has the dual character of yielding and scavenging FR. The technical phases adapting to forming FR or arising chain reactions during brewing and storage and the substances and sources of scavenging FR as well are discussed.