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Method for improving Baijiu quality by carbon-based solid acid

A carbon-based solid acid and liquor technology, applied in the field of liquor processing, can solve the problems of irreplaceability, difficult food industry, low density of effective acid centers, etc., to improve quality, reduce storage sites and equipment, and have strong acid catalysis and adsorption capacity. Effect

Pending Publication Date: 2020-02-28
GUANGXI UNIV FOR NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low density of effective acid centers of inorganic oxide solid acids (such as zeolite, niobic acid), they cannot fully exert their performance in acid-catalyzed reactions in the presence of water (such as esterification, hydrolysis, hydration), so they cannot replace homogeneous protons. acid catalyst
And it is also difficult to use in the food industry due to toxicity issues

Method used

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  • Method for improving Baijiu quality by carbon-based solid acid
  • Method for improving Baijiu quality by carbon-based solid acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Using wood powder processed from tree branches or wood processing waste as raw material, dissolve 50g of phosphoric acid in 100mL of water according to the mass ratio phosphoric acid:wood powder ratio of 1:1, add 50g of wood powder, stir and soak for 4h, at 110℃ Then heat carbonization / activation at 350°C for 3h, cool to room temperature, soak in water overnight, wash with suction, dry the obtained carbon material at 110°C, and then use 300mL of concentrated sulfuric acid with a mass fraction of 98% at 170 After sulfonation at ℃ for 8 hours, fully washed with water and dried to obtain a carbon-based solid acid with a specific surface area of ​​890 m2 / g. The carbon-based solid acid accounting for 0.05% by mass of liquor is put into liquor, sealed, stored at room temperature for more than 2 months, and filtered to obtain a 22.5% increase in total ester content, significantly reduced irritation and acrid feeling, and improved taste. The liquor with improved aroma and signi...

Embodiment 2

[0025] Using alkali lignin as raw material, according to the mass ratio potassium hydroxide: alkali lignin ratio of 2:1, dissolve 100g of potassium hydroxide in 80mL of water, add 50g of lignin, stir and soak for 5h, the amount of water added is based on the amount of It is advisable to dry a small amount of solution at 110°C, then heat carbonization / activation at 400°C for 3 hours, cool to room temperature, soak in dilute hydrochloric acid overnight, filter and wash with water, dry the obtained carbon material at 110°C, and then use 300mL98% After concentrated sulfuric acid was sulfonated at 180°C for 8 hours, it was fully washed with water and dried to obtain a carbon-based solid acid with a specific surface area of ​​400.6 m2 / g. The carbon-based solid acid accounting for 0.1% of the mass percentage of the liquor is dropped into the liquor, sealed, stored at room temperature for more than 2 months, filtered, and the total ester content of the obtained liquor is increased by 2...

Embodiment 3

[0027]Using eucalyptus wood powder as raw material, dissolve 150g of phosphoric acid in 100mL of water according to the ratio of phosphoric acid:wood powder by mass ratio of 3:1, add 50g of eucalyptus wood powder, stir and soak for 4h, dry at 110°C, and then heat and carbonize at 350°C / Activated for 3 hours, cooled to room temperature, soaked in water overnight, washed by suction filtration, dried the obtained carbon material at 110°C, and then sulfonated with 250mL oleum at 140°C for 4h, then fully washed with water and dried to obtain the ratio Carbon-based solid acid with a surface area of ​​more than 1200 m2 / g. The carbon-based solid acid that accounts for 0.25% of the mass percentage of the liquor is dropped into the liquor, sealed, stored at room temperature for 1 month, filtered, and the total ester content of the liquor obtained is increased by 18.7%, and the irritation and pungency are obviously alleviated. The taste and aroma are improved, and the quality is signif...

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Abstract

The invention belongs to the field of Baijiu processing, and particularly relates to a method for improving Baijiu quality by carbon-based solid acid. According to the method, the carbon-based solid acid serves as an aging accelerating agent and an adsorbent and is thrown into Baijiu according to a certain weight percent, the Baijiu is sealed and stored at room temperature for more than one month,the ester content of the obtained Baijiu is obviously increased after filtration, foreign flavors such as wine body pungency are decreased, mellowness is improved, ester flavor becomes obviously strong, the physical and chemical indexes and the sensory index of the Baijiu are remarkably improved, and the quality is improved. The method for improving the Baijiu quality by the carbon-based solid acid has the advantages that materials are inexpensive, low in cost and easily separated from the Baijiu and have acid catalytic esterification, adsorption and purification functions, some special flavors can give to the Baijiu, the Baijiu quality can be remarkably improved, aging time is shortened, a large number of facilities occupied by natural aging of the Baijiu are decreased, and equipment useratio and capital turnover ratio are increased.

Description

technical field [0001] The invention belongs to the field of liquor processing, and specifically relates to a method for improving the quality of liquor by using carbon-based solid acid, in particular to a method for removing foreign impurities by catalyzing the esterification of liquor by using carbon-based solid acid as a catalyst and adsorbent. It is a method to shorten the aging time of liquor and improve the quality of liquor by imparting some special flavor to liquor. Background technique [0002] Baijiu is a unique traditional liquor in China, and it is also a world-renowned distilled liquor. It is one of the seven largest distilled liquors in the world. It has a long history and a long history. In the production of traditional liquor, in addition to the unique traditional fermentation and brewing process that determines its product quality itself, the storage of liquor is also an indispensable and important link to improve the quality of basic liquor. The newly dist...

Claims

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Application Information

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IPC IPC(8): C12H1/14C12H1/044C12G3/07
CPCC12H1/14C12H1/0408C12G3/07
Inventor 刘祖广谢俊康
Owner GUANGXI UNIV FOR NATITIES
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