Polarimetric Determination of Starch in Raw Materials and Discharged Waste from Beer Production

Abstract

Brewer’s spent grain (BGS) is a by-product of thebrewing process, consisting of the solid fraction of barley malt remainingafter separation of worth. In this research, raw materials and discharged waste from beer production were evaluated on the basis of starch content, using Ewers polarimetric method.

Keywords

• starch
• polarimeter
• optical rotation
• malt
• brewers’ spent grain
• black beer