Abstract

The invention relates to a method for the production of hulupones, in particular for the production of hulupones products, suitable for beer bittering, essentially free of compounds, typically formed as side-products during the lupulones oxidation, that can cause negative impact in terms of aroma, taste or haze upon brewing application. The invention also relates to hulupones products, suitable for beer bittering and obtainable by the method of the invention, essentially free of compounds with negative aroma, taste or haze impact upon addition of the hulupones products during the brewing process. The invention also relates to beer bittering with hulupones products, obtainable by the method of the invention, not causing an undesirable or unacceptable aroma, taste or haze impact in the bittered beer.

IPC Classes  ?

• C12C 3/12 - Isomerised products from hops
• C12C 7/20 - Boiling the beerwort
• C12C 11/11 - Post fermentation treatments, e.g. carbonation or concentration

Abstract

The invention relates to a method for preparing a brewed beverage, in particular a light-coloured lager or ale beer, (to be) bottled, (to be) stored, (to be) offered, (to be) served or (to be) consumed in a UV-VIS-transmittant bottle, comprising the addition of hulupones and/or reduced hulupones during the brewing process in an effective amount to obtain a brewed beverage, wherein the fraction of hulupones and/or reduced hulupones in the total of isohumulones and (reduced) hulupones is at least 25 mol %, The invention further relates to a brewed beverage, in particular a light-coloured lager beer or ale beer, bottled, (to be) stored, (to be) offered, (to be) served or (to be) consumed in a UV-VIS-transmittant bottle, comprising (reduced) hulupones and wherein the frac-tion of hulupones and/or reduced hulupones in the total of isohumulones and (reduced) hulupones is at least 25 mol %.

IPC Classes  ?

• C12C 3/12 - Isomerised products from hops
• C12C 5/00 - Other raw materials for the preparation of beer
• C12C 11/07 - Continuous fermentation
• C12H 1/22 - Ageing or ripening by storing, e.g. lagering of beer

Abstract

The invention relates to a method for preparing a brewed beverage, in particular a beer, comprising an aqueous process for isomerization of alpha-acids from an alpha-acids containing matter, separate from the wort boiling in the brew kettle, using one type or more than one type of complexes of metal cations and chelating agents, thereby preparing an aqueous mixture comprising iso-alpha-acids. The invention further relates to said method further comprising the addition of said aqueous mixture, optionally further processed, comprising iso-alpha-acids during the brewing process, in particular to the (unfermented) wort.

IPC Classes  ?

• C12C 3/12 - Isomerised products from hops
• C12C 3/00 - Treatment of hops

Abstract

The invention relates to a method for preparing a brewed beverage, in particular a light-coloured lager or ale beer, (to be) bottled, (to be) stored, (to be) offered, (to be) served or (to be) consumed in a UV-VIS-transmittant bottle, comprising the addition of hulupones and/or reduced hulupones during the brewing process in an effective amount to obtain a brewed beverage, wherein the fraction of hulupones and/or reduced hulupones in the total of isohumulones and (reduced) hulupones is at least 25 mol%. The invention further relates to a brewed beverage, in particular a light- coloured lager beer or ale beer, bottled, (to be) stored, (to be) offered, (to be) served or (to be) consumed in a UV-VIS-transmittant bottle, comprising (reduced) hulupones and wherein the fraction of hulupones and/or reduced hulupones in the total of isohumulones and (reduced) hulupones is at least 25 mol%.

IPC Classes  ?

• C07C 49/743 - Unsaturated compounds containing a keto group being part of a ring containing hydroxy groups having unsaturation outside the rings, e.g. humulones, lupulones
• C12C 3/00 - Treatment of hops
• C12C 5/02 - Additives for beer
• C12C 7/00 - Preparation of wort
• C12C 11/00 - Fermentation processes for beer

Abstract

The invention relates to a method for preparing a brewed beverage, in particular a light-coloured lager or ale beer, which is (to be) offered, (to be) served or (to be) consumed in a (UV-VIS-transmittant) drinking vessel (while exposed to sunlight or other (artificial) sources of UV and/or VIS light), comprising the addition of hulupones and/or reduced hulupones during the brewing process in an effective amount to obtain a brewed beverage, wherein the fraction of hulupones and/or reduced hulupones in the total of isohumulones and (reduced) hulupones is at least 25 mol%. The invention further relates to a brewed beverage, in particular a light- coloured lager beer or ale beer, which is (to be) offered, (to be) served or (to be) consumed in a (UV-VIS-transmittant) drinking vessel (while exposed to sunlight or other (artificial) sources of UV and/or VIS light), comprising (reduced) hulupones and wherein the fraction of hulupones and/or reduced hulupones in the total of isohumulones and (reduced) hulupones is at least 25 mol%.

IPC Classes  ?

• C12C 5/02 - Additives for beer
• C12C 3/00 - Treatment of hops
• C07C 45/32 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by oxidation with molecular oxygen

Abstract

The invention relates to a method for preparing a brewed beverage, in particular a light-coloured lager or ale beer, (to be) bottled, (to be) stored, (to be) offered, (to be) served or (to be) consumed in a UV-VIS-transmittant bottle, comprising the addition of hulupones and/or reduced hulupones during the brewing process in an effective amount to obtain a brewed beverage, wherein the fraction of hulupones and/or reduced hulupones in the total of isohumulones and (reduced) hulupones is at least 25 mol%. The invention further relates to a brewed beverage, in particular a light- coloured lager beer or ale beer, bottled, (to be) stored, (to be) offered, (to be) served or (to be) consumed in a UV-VIS-transmittant bottle, comprising (reduced) hulupones and wherein the fraction of hulupones and/or reduced hulupones in the total of isohumulones and (reduced) hulupones is at least 25 mol%.

IPC Classes  ?

• C12C 5/02 - Additives for beer
• C12C 3/00 - Treatment of hops
• C07C 45/32 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by oxidation with molecular oxygen

Abstract

The invention relates to a method for preparing a brewed beverage, in particular for brewing a beer, comprising adding alkali metal salts of alpha-acids and beta- acids to wort before or during boiling of the wort, and – after boiling of the wort – subjecting the wort to a fermentation step wherein the brewed beverage (or beer) is produced. The method comprises contacting (blending or mixing) an alpha-acid and beta-acid containing matter with one or more alkali metal compounds, thereby forming alkali metal humulates and alkali metal lupulates, prior to the addition to the (boiling) wort.

IPC Classes  ?

• C12C 3/08 - Solvent extracts from hops
• C12C 7/20 - Boiling the beerwort

Abstract

The present invention relates to a method for extraction and dissolution of hop acids, including alpha-acids, iso-alpha-acids, beta- acids and derivatives thereof, in aqueous media, comprising the formation of quaternary ammonium salts of hop acids with quaternary ammonium compounds, preferably choline compounds, or mixtures thereof. The invention further relates to, the use of quaternary ammonium salts of hop acids in the beer brewing process. The present invention further relates to a method for preparing a brewed beverage, particularly for brewing a beer, and in particular to a method to improve the utilization of hop acids, including alpha-acids and (reduced) iso-alpha-acids in the brewing process.

IPC Classes  ?

• C12C 3/08 - Solvent extracts from hops
• C12C 3/12 - Isomerised products from hops

Abstract

The invention relates to a method for extraction into an aqueous medium of hop acids from a hop acids containing matter and for dissolution in an aqueous medium of hop acids, comprising contacting a hop acids containing matter with carbon-containing chemical substances having at least one functional group containing a nitrogen atom with a lone electron pair and at least one other polar and/or hydrophilic functional group, thereby forming complexes of hop acids with the carbon-containing chemical substances with at least one functional group containing a nitrogen atom with a lone electron pair and at least one other polar and/or hydrophilic functional group. The present invention further relates to a method for preparing a brewed beverage, particularly for brewing a beer, and in particular to a method to improve the utilization of hop acids, including alpha-acids and iso-alpha-acids, in the brewing process.

IPC Classes  ?

• C12C 3/08 - Solvent extracts from hops
• C12C 7/24 - Clarifying beerwort between hop boiling and cooling
• C12C 11/11 - Post fermentation treatments, e.g. carbonation or concentration

Abstract

The invention relates to a process for the production of hexahydro-iso-alpha-acids starting from iso-alpha-acids (or tetrahydro-iso-alpha-acids) in which iso-alpha-acids (or tetrahydro-iso-alpha-acids) are mixed with a heterogeneous ruthenium containing catalyst, that catalyzes the hydrogenation from iso-alpha-acids or tetrahydro-iso-alpha-acids to hexahydro-iso-alpha-acids, either in solvent-free conditions, or in the presence of a solvent phase (e.g. carbon dioxide, water, ethanol or another organic solvent, or mixtures thereof), and in the absence or presence of other hop compounds (such as beta-acids). The resulting mixture is then subjected to a temperature at which the iso-alpha-acid (or tetrahydro-iso-alpha-acid) containing reaction medium is sufficiently low in viscosity to allow easy mixing with the heterogeneous ruthenium containing catalyst and held under a hydrogen containing atmosphere (either pure hydrogen gas or mixed with an inert gas) for a reaction time sufficient to effect high conversion of the iso-alpha-acid (or tetrahydro-iso-alpha-acid) reactant into the hexahydro-iso-alpha-acid product.

IPC Classes  ?

• C07C 45/66 - Preparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reactions not involving the formation of C=O groups by splitting-off hydrogen atoms or functional groupsPreparation of compounds having C=O groups bound only to carbon or hydrogen atomsPreparation of chelates of such compounds by reactions not involving the formation of C=O groups by hydrogenolysis of functional groups by dehydration

Abstract

The invention relates to a process for the production of iso-alpha-acids starting from alpha-acids in which an alpha-acid containing hop extract is mixed with a carbon-containing chemical compound with one or more functional groups containing a (basic) nitrogen atom with a lone pair (or mixtures thereof), either in solvent-free conditions or in the presence of solvents and preferably under an oxygen-free atmosphere. The resulting mixture is subjected to a temperature of at least 278 K for a time sufficient to effect the intended conversion of the alpha-acid reactant into the iso-alpha-acid product. The present invention further relates to iso-alpha-acid compositions obtained by said improved isomerisation process and to the use of said iso-alpha-acid compositions as bittering formulation and/or as source to obtain reduced or hydrogenated iso-alpha-acid compositions.

IPC Classes  ?

• C12C 3/12 - Isomerised products from hops

Abstract

The invention relates to a process for the production of hexahydro-iso-alpha-acids starting from iso-alpha-acids (or tetrahydro-iso-alpha-acids) in which iso-alpha-acids (or tetrahydro- iso-alpha-acids) are mixed with a heterogeneous ruthenium containing catalyst, that catalyzes the hydrogenation from iso-alpha-acids or tetrahydro-iso-alpha-acids to hexahydro- iso-alpha-acids, either in solvent-free conditions, or in the presence of a solvent phase (e.g. carbon dioxide, water, ethanol or another organic solvent, or mixtures thereof), and in the absence or presence of other hop compounds (such as beta-acids). The resulting mixture is then subjected to a temperature at which the iso-alpha-acid (or tetrahydro-iso-alpha-acid) containing reaction medium is sufficiently low in viscosity to allow easy mixing with the heterogeneous ruthenium containing catalyst and held under a hydrogen containing atmosphere (either pure hydrogen gas or mixed with an inert gas) for a reaction time sufficient to effect high conversion of the iso-alpha-acid (or tetrahydro-iso-alpha-acid) reactant into the hexahydro-iso-alpha-acid product. The molar ratio of iso-alpha-acid or tetrahydro-iso-alpha-acid to ruthenium varies between 1:1 and 2000:1. After the hydrogenation process, the heterogeneous ruthenium containing catalyst can be separated from the hexahydro-iso-alpha-acid product phase by centrifugation, filtration, decantation or other liquid-solid separation techniques. The hydrogenation process can be performed batch-wise or alternatively in continuous mode.

IPC Classes  ?

• C12C 3/12 - Isomerised products from hops

Abstract

The invention relates to a process for the production of iso-alpha-acids starting from hop alpha-acids in which an hop alpha-acid containing feed is contacted with a heterogeneous alkaline earth metal based catalyst, that essentially does not dissolve in the alpha-acid containing feed or in the iso-alpha-acid product phase, either in solvent-free conditions or in the presence of water, carbon dioxide, or an organic solvent or a mixture thereof. The resulting mixture is subjected to a temperature of at least 293 K, preferably under an inert atmosphere, for a time sufficient to effect high conversion of the alpha-acid reactant into the iso-alpha-acid product. The molar ratio of alpha-acid to earth alkaline metal (Mg, Ca, Sr, Ba) varies preferably between 0.2 and 20. After the isomerisation process, the heterogeneous alkaline earth metal based catalyst can be quantitatively separated from the iso-alpha-acid product phase by liquid-solid separation techniques.

IPC Classes  ?

• C12C 3/12 - Isomerised products from hops
• C12C 3/08 - Solvent extracts from hops
• C12C 3/10 - Solvent extracts from hops using carbon dioxide