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Method of producing a coffee extract

A coffee extraction and coffee technology, applied in the direction of coffee extraction, roasted coffee, coffee, etc., can solve the problems that have not been widely used

Inactive Publication Date: 2018-04-17
NESTEC SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of enzymatic hydrolysis has not been widely applied, and there is still a need to find improved methods for extracting carbohydrates from coffee under mild conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0024] A preferred embodiment of the method of the invention for the preparation of coffee extract comprises the following steps:

[0025] a) contacting roasted and ground coffee beans with an enzyme preparation comprising cellulase and xylanase; and

[0026] b) extracting said coffee beans with an aqueous liquid to prepare a coffee extract.

[0027] Another preferred embodiment of the method of the invention for the preparation of coffee extract comprises the following steps:

[0028] a) contacting roasted and ground coffee beans with an enzyme preparation comprising cellulase, xylanase, beta-mannanase and beta-glucosidase; and

[0029] b) extracting said coffee beans with an aqueous liquid to prepare a coffee extract.

Embodiment 1

[0031] Example 1: Hydrolysis of SGC with different enzymes

[0032] Coffee beans in the form of roasted and ground coffee bean granules that have undergone the conventional extraction process for the production of soluble coffee are subjected to enzymatic hydrolysis by different enzymes and combinations of enzymes.

[0033] Hydrolysis was performed at 30°C or 50°C for 15 minutes to 24 hours using 1% SGC in 50 mM maleate buffer (pH 5.0 or pH 7.0) and 50 μg / mL enzyme.

[0034] HPLC analysis of the sugars produced

[0035] To establish HPLC analysis, use Agilent Technology 1260 Infinity Quaternary LC system to detect different standard samples, the system is equipped with the following components: 1260ALS sampler, 1260 quaternary pump, 1260RID detector. Different columns (Hi-Plex Na and Hi-Plex H) were tested to determine the best separation. Water was used as the eluent at a flow rate of 0.5 mL for 1 minute.

[0036] The retention times (in minutes) of the following stand...

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PUM

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Abstract

The present invention relates to a method of producing a coffee extract wherein coffee beans are contacted with cellulase and xylanase.

Description

technical field [0001] The present invention relates to a process for the preparation of coffee extract, wherein coffee beans are contacted with enzymes. Background technique [0002] High temperatures are often used during the industrial extraction of coffee beans (eg, for the preparation of soluble or instant coffee products) to achieve hydrolysis and solubilization of carbohydrates in the coffee beans. Solubilization of carbohydrates is important to achieve the desired yield of the extraction process, and carbohydrates can help stabilize the complex of coffee extracts during storage. The high temperatures used to achieve carbohydrate hydrolysis may lead to degradation and / or loss of desired compounds, such as aroma compounds, and in some cases may lead to the formation of undesired complexes in the coffee extract. The use of enzymes to hydrolyze carbohydrates has been proposed in an effort to avoid the adverse effects of high temperatures. For example, EP 1 745 702 disc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23F5/10A23F5/24
CPCA23F5/10A23F5/246A23F5/26A23F5/28
Inventor C·雷S·帕尔泽R·贝尔-赖利德E·阿南塔
Owner NESTEC SA