Fat-soluble natural antioxidant as well as preparation method and application thereof

A natural antioxidant and fat-soluble technology, applied in the fields of application, edible oil/fat, edible oil/fat product preservation, etc., to achieve excellent antioxidant performance, low price, and avoid environmental pollution

Pending Publication Date: 2021-04-06
JIANGSU LITIAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Method used

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preparation example Construction

[0019] The invention provides a kind of preparation method of fat-soluble natural antioxidant, comprises the following steps:

[0020] Heating and rectifying the tar by-produced when the plant material is burned into charcoal until the total mass content of methoxyphenolic compounds and dimethoxyphenolic compounds in the resulting fraction is ≥60%, collecting the fractions to obtain a fat-soluble natural antioxidant ;

[0021] The temperature of the heating rectification is 240-280°C.

[0022] In the present invention, unless otherwise specified, the required preparation materials are commercially available products well known to those skilled in the art.

[0023] In the present invention, the tar that is by-produced when the plant material is charcoal-burned is preferably commercially available, and the tar preferably includes wood tar, pine wood tar, bamboo tar, straw tar or grass tar.

[0024] In the present invention, the heating rectification is preferably carried out i...

Embodiment 1

[0034] Put 1,000 kilograms of bamboo tar, a by-product of bamboo produced in Sanming, Fujian, into the heating kettle of the rectification tower, and use high-temperature heat transfer oil (model IOTA-255A) at a pressure of 760mmHg and a temperature of 240-280°C. Carry out heating rectification, obtain 434 kilograms of cuts, i.e. fat-soluble natural antioxidant (recorded as A), detect its composition with GC-MS (condition is: inlet temperature 240 ℃, detector temperature is 250 ℃, heating program: Initially 100°C, 10°C / min to 200°C, heat preservation 50min), calculated according to the peak area, the prepared fat-soluble natural antioxidant A contains 12.5% ​​of 2-methoxyl-5-methylphenol, 2 -Methoxy-5-ethylphenol 8.6%, 4-vinyl-2-methoxyphenol 15.7%, 2,6-dimethoxyphenol 17.9%, 4,5-dimethoxy-2- Methylphenol 19.0%, 3,5-dimethoxy-2-methylphenol 3.13%, that is, in the prepared fat-soluble natural antioxidant A, the total mass content of methoxyphenols and dimethoxyphenols was 76.8...

Embodiment 2

[0043] Put 1,000 kg of pine wood tar produced by Fujian Dehua into the heating kettle of the rectification tower, and use high-temperature heat transfer oil (IOTA-255A) at a pressure of 760mmHg and a temperature of 240-280°C. Heating rectification obtains 358 kilograms of cuts, i.e. fat-soluble natural antioxidants (referred to as B), and its composition is detected by GC-MS (conditions are: inlet temperature 240°C, detector temperature 250°C, heating program: initial 100°C, 10°C / min to 200°C, heat preservation for 50min), calculated according to the peak area, the prepared fat-soluble natural antioxidant B contains 10.3% of 2-methoxyl-5-methylphenol, 2- Methoxy-4-ethylphenol 8.2%, 4-vinyl-2-methoxyphenol 14.5%, 2,4-dimethoxyphenol 18.4%, 4,5-dimethoxy-2-methoxyphenol 6.2% phenol, 5.91% 3,5-dimethoxy-2-methylphenol. That is, in the prepared fat-soluble natural antioxidant B, the total mass content of methoxyphenols and dimethoxyphenols is 63.51%.

[0044] Performance Testing...

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Abstract

The invention provides a fat-soluble natural antioxidant as well as a preparation method and an application thereof, and belongs to the technical field of industrial waste liquid recycling. The preparation method of the fat-soluble natural antioxidant, provided by the invention, comprises the following steps: heating and rectifying byproduct tar generated during charcoaling of plant materials until the total mass content of methoxyphenol compounds and dimethoxyphenol compounds in obtained fractions is greater than or equal to 60%, and collecting the fractions to obtain the fat-soluble natural antioxidant; wherein the temperature of the heating rectification is 240-280 DEG C. According to the invention, the fat-soluble natural antioxidant is prepared by taking the byproduct tar generated during charcoaling of plant materials as a raw material, and the raw material is wide in source, low in price and low in production cost and can be widely produced and used; the fat-soluble natural antioxidant prepared by the preparation method disclosed by the invention contains methoxyphenol and dimethoxyphenol compounds, has excellent oxidation resistance, can be used for oxidation resistance of foods and daily chemical products, and is most suitable for being used as a feed antioxidant.

Description

technical field [0001] The invention relates to the technical field of recycling industrial waste liquid, in particular to a fat-soluble natural antioxidant and its preparation method and application. Background technique [0002] Fat-soluble antioxidants are substances that are evenly distributed in fats and oils, and can exert an anti-oxidative effect on fats and fat-containing foods and prevent them from oxidative rancidity. Fat-soluble antioxidants are divided into two categories: synthetic fat-soluble antioxidants and natural fat-soluble antioxidants. At present, most of the antioxidants used in various countries are artificially synthesized, and the widely used ones are butyl hydroxyanisole (BHA), dibutyl hydroxytoluene (BHT), propyl gallate (PG), ethoxyquinoline ( EMQ) and tert-butylhydroquinone (TBHQ), etc. Natural fat-soluble antioxidants include guaiac, tocopherol mixed concentrate, and carotenoids. [0003] However, BHA is suspected of being carcinogenic. In 19...

Claims

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Application Information

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IPC IPC(8): A23D9/06A23D7/06
CPCA23D9/06A23D7/06
Inventor张本田张丽丽林翔云张越炜马怀祥
OwnerJIANGSU LITIAN TECH