The present disclosure discloses a method for screening malt for brewing red beer, and belongs to the field of beer brewing. The method takes different kinds of malt samples as examples, and after whole malt mashing and dilution, mashed wort is diluted with water to a chroma value of 50-80 EBC; and when the red intensity of the mashed wort having a chromatic value of 50-80 EBC is 0.209-0.289, the measured malt can be fermented and brewed into red beer. The method can screen malt for red beer brewing simply and quickly, is of important practical significance for guiding the production of red beer, and lays an important foundation for further brewing red beer with different malt.

A system and method in a process for making a fermented beverage (FB), such as a bright beer, and producing a clarified FB, using a caustic dosing system to neutralize naturally-present organic acids typically present in a the fermented beverage (such as a bright beer) to the salt forms of the organic acids, and removing or separated the salts to form the clarified fermented beverage or clarified bright beer.

A system and method in a process for making a fermented beverage (FB), such as a bright beer, and producing a clarified FB, using a caustic dosing system to neutralize naturally-present organic acids typically present in a the fermented beverage (such as a bright beer) to the salt forms of the organic acids, and removing or separated the salts to form the clarified fermented beverage or clarified bright beer.

A method and apparatus are presented for reducing the methanol content in a fermented solution to create forms healthier to human consumption, thereby reducing headaches and hangovers. In accordance with the disclosed embodiments, the fermented solution is placed in a vacuum vessel and heated to a fixed temperature. Pulling a fixed vacuum within the vessel lowers the boiling point of the solution, creating a vapor selectively of the low-end congeners, for example, methanol. The methanol-rich vapor is condensed and disposed leaving a healthier fermented solution with reduced methanol content. In some embodiments, the fixed temperature is lower than or equal to 32 degrees C. which preserves the aroma and taste of the fermented solution.

A method and apparatus are presented for reducing the methanol content in a fermented solution to create forms healthier to human consumption, thereby reducing headaches and hangovers. In accordance with the disclosed embodiments, the fermented solution is placed in a vacuum vessel and heated to a fixed temperature. Pulling a fixed vacuum within the vessel lowers the boiling point of the solution, creating a vapor selectively of the low-end congeners, for example, methanol. The methanol-rich vapor is condensed and disposed leaving a healthier fermented solution with reduced methanol content. In some embodiments, the fixed temperature is lower than or equal to 32 degrees C. which preserves the aroma and taste of the fermented solution.

It has unexpectedly been found that a low alcohol or alcohol-free beverage, with a flavor profile very close to a beer of at least 4% (vol/vol) alcohol, can be produced by using Pichia kluyveri yeast strains. In particular, Pichia kluyveri yeast strains only use the glucose in the wort, and have the ability of converting this substrate into a high concentration of specific flavor compounds, which are normally produced by Saccharomyces ssp. yeast strains used for the brewing of beer. In this way the Pichia kluyveri yeast strains can be used to produce either a low alcohol or alcohol-free beverage, depending on the glucose levels in the wort. The main flavor compounds produced by Pichia kluyveri in the fermentation of wort are isoamyl acetate, isoamyl alcohol, ethyl butyrate, ethyl hexanoate and ethyl octanoate.

A method for producing a beer or a beer-like beverage with a pure and mild hop aroma having a slight raw hop odor, which includes maintaining a hop-mixed liquid in a tank, which liquid contains a hop and a solvent, at a temperature less than the boiling point of the solvent, wherein at least a part of the hop-mixed liquid is withdrawn from the tank, and the liquid is supplied to an empty portion of the tank, again, to circulate the hop-mixed liquid through the tank. Also disclosed is an apparatus for producing the beer or beer-like beverage.

A method for producing a beer or a beer-like beverage with a pure and mild hop aroma having a slight raw hop odor, which includes maintaining a hop-mixed liquid in a tank, which liquid contains a hop and a solvent, at a temperature less than the boiling point of the solvent, wherein at least a part of the hop-mixed liquid is withdrawn from the tank, and the liquid is supplied to an empty portion of the tank, again, to circulate the hop-mixed liquid through the tank. Also disclosed is an apparatus for producing the beer or beer-like beverage.

Provided herein are genetically modified yeast cells that recombinantly expresses a gene encoding a mutant beta-lyase. Also provided are methods of producing fermented products and methods of producing ethanol.

A method, and related apparatus, for producing beer from any types of grains includes activating phenomena of controlled hydro-dynamic cavitation during all the steps of the process, from mashing to hopping, and possibly after yeast inoculation. The present method and apparatus provide a number of advantages over traditional techniques, for example, avoiding the pre-crushing of the malts or the grains, thereby increasing the efficiency of saccharification and of starch extraction, and avoiding the boiling at equal efficiency of the hopping. Another advantage is the opportunity of causing the concentration of gluten to fall in the final product simply with controlled hydraulic processes through electromechanics, and of possibly extending fermentation.