TITLE:
Effects of Hops (Humulus lupulus L.) Beta-Acids on Short Chain Fatty Acid Production from Complex Carbohydrates by Rumen Microbiota
AUTHORS:
Michael D. Flythe, Brittany E. Harlow
KEYWORDS:
Rumen Microbiota, Fiber, Phytochemical, Feed Antibiotic
JOURNAL NAME:
Advances in Microbiology,
Vol.9 No.12,
December
11,
2019
ABSTRACT: The aim of this experiment was to determine the effects of beta-acids, prenylated phenolic compounds from the hops plant, on fermentation of individual carbohydrates by rumen microorganisms. Mixed, uncultivated rumen microbiota was harvested from rumen fistulated steers and washed to make cell suspensions. The suspensions were used to inoculate media with a glucan, fructan or constituent sugar, and fermentation was evaluated by production of short-chain fatty acids (SCFA). Hops beta-acid (30 ppm) was not universally inhibitory, but each of the SCFA (acetate, propionate or butyrate) was decreased (P