Process for preparing bitter beverages

Claim 2

An aqueous solution containing substantially pure and stable cynaropicrin in a concentration of at least about 10 mg/liter, the solution having a pH value of from about 2.0 to 5.7.

Claim 3

An aqueous solution as claimed in claim 1, which has a pH of from 2.5 to 5.7.

Claim 4

An aqueous solution as claimed in claim 1, which is a non-alcoholic beverage, comprising cynaropicrin in a concentration of from 10 to 50 mg/liter.

Claim 5

An aqueous solution as claimed in claim 3, which has a pH of from 2.5 to 4.0.

Claim 6

An aqueous solution as claimed in claim 3, which is carbonated.

Claim 7

An aqueous solution as claimed in claim 3, which contains an edible acid in a physiologically safe concentration.

Claim 8

An aqueous solution as claimed in claim 3, which contains a fragrance.

Claim 9

An aqueous solution as claimed in claim 3, which contains a flavouring agent.

Claim 10

An aqueous solution as claimed in claim 1, which is an alcoholic beverage comprising cynaropicrin in a concentration of from 50 to 500 mg/liter.

Claim 11

An aqueous solution as claimed in claim 9, which has a pH-value of from 3 to 5.

Claim 12

An aqueous solution as claimed in claim 9 wherein the alcoholic beverage is selected from the group consisting of beer, aperitif, liqueur and vermouth.

Claim 13

A process for the production of a bitter beverage comprising the steps of adding to an aqueous beverage solution, to impart a bitter taste to said beverage, cynaropicrin in a substantially pure and stable form, said cynaropicrin being in an aqueous medium maintained at a pH of 5.7, or below, and said cynaropicrin concentration in said beverage being at least about 10 mg/liter.

Claim 14

A process for the production of a bitter beverage comprising the steps of adding to an aqueous beverage solution, to impart a bitter taste to said beverage, cynaropicrin in a substantially pure and stable form, said cynaropicrin being in an aqueous medium maintained at a pH of 5.7, or below, and said cynaropicrin concentration in said beverage being at least about 10 mg/liter.

Claim 15

A process as claimed in claim 12, wherein the cynaropicrin is added in solid form.

Claim 16

A process as claimed in claim 12, wherein the cynaropicrin is added in the form of a concentrated solution thereof.

Claim 17

A process as claimed in claim 12, wherein said cynaropicrin is employed in an amount sufficient to impart to said beverage a cynaropicrin concentration in the range of from about 10 to 500 mg/liter.

Claim 18

In the process of preparing a beverage comprising preparing a bittering composition by extraction of a vegetable material containing cyaropicrin and adding said composition to a beverage solution; the improvement consisting of stabilizing a substantially pure cynaropicrin from said vegetable material by maintaining an acid pH of less than 7 during the extraction step whenever said cynaropicrin is in contact with water, and adding said substantially pure and stable cynaropicrin to said beverage in an amount sufficient to impart to said beverage a cynaropicrin concentration of at least about 10 mg of cynaropicrin per liter of said beverage and in the presence of a physiologically safe amount of an edible acid for maintaining said beverage at a pH of 5.7 or below.

Claim 19

In the process of preparing a beverage comprising preparing a bittering composition by extraction of a vegetable material containing cyaropicrin and adding said composition to a beverage solution; the improvement consisting of stabilizing a substantially pure cynaropicrin from said vegetable material by maintaining an acid pH of less than 7 during the extraction step whenever said cynaropicrin is in contact with water, and adding said substantially pure and stable cynaropicrin to said beverage in an amount sufficient to impart to said beverage a cynaropicrin concentration of at least about 10 mg of cynaropicrin per liter of said beverage and in the presence of a physiologically safe amount of an edible acid for maintaining said beverage at a pH of 5.7 or below.

Claim 20

A substantially stable and colorless cynaropicrin solution comprising said cynaropicrin dissolved in a solvent selected from the group consisting of water and mixtures of water and alcohol, said solution containing an acid in an amount sufficient to impart to said solution a pH of 5.7 or below and said cynaropicrin being dissolved in said solution in an amount sufficient to impart to said substantially stable and colorless solution a cynaropicrin concentration of at least about 10 mg cynaropicrin per liter of said solution.

Claim 21

A substantially stable and colorless cynaropicrin solution comprising said cynaropicrin dissolved in a solvent selected from the group consisting of water and mixtures of water and alcohol, said solution containing an acid in an amount sufficient to impart to said solution a pH of 5.7 or below and said cynaropicrin being dissolved in said solution in an amount sufficient to impart to said substantially stable and colorless solution a cynaropicrin concentration of at least about 10 mg cynaropicrin per liter of said solution.

Claim 22

A process as claimed in claim 12 wherein the pH of the aqueous medium is between 2.0 and 5.7.

Claim 23

The process according to claim 16 wherein the pH of said beverage ranges from about 2.0 to 5.7.

Claim 24

The substantially stable and colorless cyaropicrin solution according to claim 17 wherein said solution has a pH ranging from about 2.0 to 5.7.