| 摘要 |
A mixture of the hard resins, lipids and waxes obtained by solvent extraction of hops can be effectively utilized in brewing processes to suppress foaming. The mixture is typically the residue obtained by extraction of hops with liquid carbon dioxide, or other solvents, followed by extraction of alpha acids, beta acids and essential oils from the whole hop extract. The mixture of natural products is at least as effective as silicone antifoams, and has been shown to improve fermentation rates because the presence of hop lipids has a positive effect on yeast metabolism. |
