TRACE VOLATILE CONSTITUENTS OF BEER. II. HOP WAX

Abstract

Hop wax has been found to occur in beer and is present in concentrations of 0.5-0.6 p.p.m. The wax occurs in the non-steam volatile fraction of the neutral ether solubles of beer. A number of acids produced by saponification of hop wax have been shown also to occur as volatile constituents of beer. The particular sample of hop wax used is shown to have very little effect on the rate of deterioration of a acids. Certain aspects of the photoisomerization of humulone and humulone-hop wax combinations are discussed.