摘要:
New high molecular weight, water soluble polymers containing a substantial proportion of recurring quaternised aminomethyl acrylamide or methacrylamide groups are of value as flocculants, especially for suspensions of organic matter of a proteinaceous or cellulosic nature.
摘要:
Provided is a method of treatment of an alcoholic beverage, particularly beer or wine, for removing ingredient(s) causing undesirable sulfury and/or fatty flavor(s), by contacting the beverage with a composition having a polymer-hydrogen peroxide complex, wherein the polymer is derived from at least one N-vinyl lactam monomer, and wherein the hydrogen peroxide is present in an amount from about 1% by weight to about 50% by weight of the complex. Provided further is a method of treatment of an alcoholic beverage to remove at least (a) at least one ingredient causing at least one undesirable sulfury and/or fatty flavor, and (b) at least one ingredient causing colloidal haze, including contacting the beverage with a composition described herein. Provided furthermore is an alcoholic beverage obtained by the method(s) of treatment described herein.
摘要:
A method of preparing yeast fermented beverage is provided, comprising (a) fermenting wort with yeast to produce a fermented liquid containing yeast, alcohol, polyphenols and protein; (b) optionally removing the yeast; (c) combining the fermented liquid with polyvinylpolypyrrolidone (PVPP) particles to bind at least a fraction of the polyphenols and/or proteins, wherein at least 80 wt. % of the PVPP particles have a diameter of 5-300 μm; (d) removing a slurry containing the PVPP particles; (e) filtering the slurry over a filter having a pore size of 0.1-80 μm to produce a PVPP-enriched retentate and a PVPP-depleted filtrate; (f) regenerating the PVPP particles in the PVPP-enriched retentate by desorbing and separating the polyphenols and/or protein from the PVPP-particles; and (f) optionally, further refining and recirculating the regenerated PVPP particles to step (c). The method can be operated with single use PVPP or regenerable PVPP and does not require capacious filter hardware.
摘要:
The invention discloses a separation matrix with a porous solid support and a plurality of polyvinylpyrrolidone (PVP) polymer chains covalently attached to the solid support. The polyvinylpyrrolidone polymer chains are either vinylpyrrolidone homopolymer chains or copolymer chains which comprise at least 70 mol % vinylpyrrolidone monomer residues and less than 2 mol % negatively charged monomer residues.
摘要:
The present disclosure relates to methods and compositions for fining fermentable beverages, such as alcoholic fermentable beverages, for example, wine, beer, lager, ale, cider, perry, spirit and liqueur. The compositions herein comprise a pectin and carrageenan which are used to treat the beverage prior to fermentation.
摘要:
In a clarification method for a beverage liquid, in particular for producing beer, the beverage liquid, after it passes through a fermentation stage, is subjected to a clarification which serves for removing active haze components from the beverage liquid, and fed to a maturation vessel in which the beverage liquid is stored for a maturation time. In a further method step, the beverage liquid is charged with at least one pectin-containing clarification agent for increasing a filtration performance. In this case it is provided that the pectin-containing clarification agent is introduced into the beverage liquid on the path from the fermentation stage to the maturation vessel and the pectin present therein, before the feed to the maturation vessel, is at least for the most part removed again from the beverage liquid.
摘要:
The present invention relates to a winemaking process using the traditional method of vinification except that, after fermentation, a chitosan-based film is placed in contact with the wine and no sulfur dioxide is added. The present invention also relates to a process for preparation of a chitosan-based film by modification of the chitosan with natural compounds, which allows to produce chitosan films stable in acidic medium, with high antioxidant activity, while maintaining the antimicrobial activity. In one embodiment, the films are prepared by covalent linkage to the chitosan of molecules, such as genipin, which results in decreasing its solubility in acidic medium, and also of molecules with high antioxidant activity, such as caffeic acid, or grape and wine extracts rich in compounds with antioxidant activity.
摘要:
The present invention relates to compositions comprising yeast cells and/or yeast cell components and methods for producing and utilizing the same. In particular, the invention provides novel yeast comprising altered cell wall structure (e.g., clay and/or clay component(s) integrated (e.g., interlaced) into cell wall(s) and/or cell wall(s) comprising altered glucan:mannan ratio), methods of producing the same, compositions comprising and/or derived from the same, and methods of using the same (e.g., to sequester and/or adsorb bacteria and toxins). Compositions and methods of the invention find use in a variety of applications including dietary (e.g., admixing with feedstuffs or otherwise feeding to animals), therapeutic, prophylactic (e.g. admixing with bedding sources and/or other materials that come into contact with animals, usage during food and beverage processing and manufacture, and usage during filtration of liquids) as well as research applications.