Preparation method of functional food-grade wood vinegar

A technology of functional food and wood vinegar, which is applied in the manufacture of pyroligneous acid, biofuel, petroleum industry, etc., can solve the problems of low yield of toxic aldehydes, time-consuming, labor-intensive, expensive, etc., and achieve strong Antioxidant performance and free radical scavenging performance, effect of strong free radical scavenging ability

Inactive Publication Date: 2017-09-15
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can obtain relatively pure and safe food-grade wood vinegar, it is time-consuming, labor-intensive and expensive
[0003] At present, the most advanced food-grade wood vinegar preparation method still has distillation-ozone ultraviolet combination method. Although this method can effectively remove carcinogens such as phenol and tar in wood vinegar, it still contains some aldehyde toxic substances and the yield is low. Low
[0004] In summary, there are many problems and defects in the preparation method of present food grade wood vinegar

Method used

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  • Preparation method of functional food-grade wood vinegar
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  • Preparation method of functional food-grade wood vinegar

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preparation example Construction

[0026] The invention relates to a method for preparing functional food-grade wood vinegar. In the method, raw materials are extracted with solvent and then distilled to obtain functional food-grade wood vinegar. The functional food-grade wood vinegar contains trace amounts of 2-methoxyphenol and 2,6-dimethoxyphenol, which have a strong free radical scavenging effect under the inherent acidic conditions of the wood vinegar itself, and have great Nice health care function.

[0027] The raw material solvent extraction process is specifically to firstly make crude wood vinegar from raw materials, then to primary refined wood vinegar, and then to secondary refined wood vinegar.

[0028] The functional food-grade wood vinegar of the present invention can be prepared from oak wood vinegar, jujube pit wood vinegar, corn cob wood vinegar, walnut shell wood vinegar, rice husk wood vinegar, and peanut shell wood vinegar according to the different raw materials selected. Wood vinegar etc...

Embodiment 1

[0034] The present invention relates to a kind of preparation method of functional sour jujube seed food-grade wood vinegar, comprising the following steps:

[0035] (1) Zizyphus jujube core obtains crude wood vinegar through dry distillation and condensation;

[0036] (2) adopt ethyl acetate to extract the described crude wood vinegar three times, combine the extracts obtained three times to obtain primary refined wood vinegar; wherein the process of extracting the crude wood vinegar three times is specifically: 300mL ethyl acetate Add the ester to 300mL crude wood vinegar three times, each time adding 100mL, shaking at room temperature for 5 minutes each time, standing to separate layers, discarding the water phase, leaving the organic phase;

[0037] (3) Use 0.6mol / L NaHCO 3 The primary refined wood vinegar solution was extracted three times, and the extracted liquid obtained three times was combined to obtain the secondary refined wood vinegar liquid; wherein the extracti...

Embodiment 2

[0046] The preparation method of embodiment 2 is the same as that of embodiment 1. The only difference is that the raw material in Example 1 is Ziziphus jujube seed, and the product obtained in Example 1 is Jujube seed food grade wood vinegar; and the raw material in Example 2 is oak wood, and Example 2 obtains The product is oak wood food grade wood vinegar.

[0047] Table 2 is a comparative table of component contents before and after refining of oak wood food-grade wood vinegar obtained in the present invention.

[0048] Table 2 Comparison table of components in crude oak wood vinegar and oak food grade wood vinegar

[0049]

[0050]

[0051] As shown in Table 2, the food-grade wood vinegar prepared by the method of the present invention not only removes a large amount of toxic phenolic substances and aldehydes, but also retains a small amount of phenolic substances beneficial to the human body such as 2-methoxyphenol , 2,6-Dimethoxyphenol, these two phenolic substa...

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Abstract

The invention relates to a preparation method of functional food-grade wood vinegar. The method comprises the following steps: carrying out dry distillation and condensation on a raw material to obtain crude wood vinegar; extracting the crude wood vinegar with ethyl acetate three times, and mixing above obtained three extract liquids to obtain primary purified wood vinegar; extracting the primary purified wood vinegar with a 0.6 mol / L NaHCO3 solution three times, and mixing obtained three extract liquids to obtain secondary purified wood vinegar; adding concentrated phosphoric acid to the secondary purified wood vinegar, placing the secondary purified wood vinegar in a flask after the secondary purified wood vinegar becomes pale yellow from wine red, distilling the secondary purified wood vinegar, and collecting a 97-100 DEG C fraction; and shaking up the fraction after the distillation is finished, adding active carbon powder, decolorizing the distillation in water bath, and carrying out suction filtration to obtain the food-grade wood vinegar. Large amounts of toxic phenol substances and aldehyde substances are removed from the food-grade wood vinegar, and tiny amounts of phenol substances beneficial to human bodies are reserved.

Description

technical field [0001] The invention relates to a preparation method of functional food-grade wood vinegar. Background technique [0002] Wood vinegar is a yellow-brown liquid containing acids, ketones, phenols and other substances. People's application of it originated in ancient China for reducing phlegm and so on. In modern times, Japan was the first country to use wood vinegar. After years of development, it has been found that wood vinegar can treat human intestinal diseases, skin diseases, and even cardiovascular and cerebrovascular diseases. In Korea, people have made wood vinegar into a healthy green drink. But domestic research on wood vinegar in food field and medicine field is almost blank. Because wood vinegar contains a variety of harmful substances, such as carcinogens such as phenol and benzopyrene, wood vinegar must be refined and purified before it can be used in food and medicine. The preparation method of food-grade wood vinegar commonly used in the w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10C5/00
CPCC10C5/00Y02E50/10
Inventor 汪子明李占超李建明胡滨
Owner JILIN UNIV
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