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Preparation method of anisic acid with high-efficiency and environment-friendly effects

An anisic acid and environment-friendly technology, applied in the field of efficient and environmentally friendly anisic acid preparation, can solve problems such as high pollution and high energy consumption, and achieve the effects of high purity, low energy consumption and mild reaction conditions

Inactive Publication Date: 2017-07-25
嘉兴德扬生物科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problems of high energy consumption and high pollution in the existing anisic acid preparation methods, the present invention provides an efficient and environmentally friendly preparation method of anisic acid

Method used

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  • Preparation method of anisic acid with high-efficiency and environment-friendly effects

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of efficient and environment-friendly preparation method of anisic acid of the present invention comprises:

[0019] (1) Take 100 g star anise fruit and grind it into 60-mesh powder, put it into a 2000 mL hard round bottom flask of volatile oil extractor, then add 800 mL deionized water to soak for 1 h, start heating to 90 °C and Keep the temperature at a constant temperature for 2 hours, and the fennel oil enters the branch pipe of the volatile oil extractor along with part of the water vapor;

[0020] (2) Separate the fennel oil collected in the branch pipe of the volatile oil extractor to remove most of the water, then add 1 g of anhydrous magnesium sulfate to the fennel oil, let it stand for 20 min, heat the mixed solution to 50 °C, and Carry out suction filtration with Buchner funnel while hot, to remove magnesium sulfate, collect filtrate, obtain fennel oil;

[0021] (3) Take 7.5 mL of fennel oil obtained in step (2), add it to a 50 mL round bottom flask, ...

Embodiment 2

[0025] Carry out infrared spectrum detection to the anisic acid of embodiment 1 gained:

[0026] To compress the blank tablet of potassium bromide and the sample tablet of potassium bromide containing anisic acid, first grind 200 mg of dried potassium bromide in an agate mortar and press it into a blank tablet; then take 1 mg of purified and dried anisic acid and Grind 200 mg of dry potassium bromide in an agate mortar and press it into a sample piece; put the potassium bromide blank piece on the sample holder of the infrared spectrometer to collect the reference background spectrum; then put the sample piece containing anisic acid for Determination, obtain the infrared spectrogram of anisic acid, see figure 1 , and searched and compared with the library. figure 1 Shown at 1604, 1578, 1516, 1428 cm -1 There are 4 characteristic peaks, which are the characteristic peaks of the vibration of the benzene ring skeleton; at 1263, 1068 cm -1 There are absorption peaks, which are c...

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Abstract

The invention relates to a preparation method of anisic acid with high-efficiency and environment-friendly effects. The preparation method comprises the following steps of using a volatile oil extractor to extract anise oil, mixing the anise oil and a ferric chloride solution, stirring, heating, and dripping an oxidant (hydrogen peroxide) to oxidize the anise oil into the anisic acid. The preparation method has the advantages that the volatile oil extractor is used for extracting the anise oil from star anise, the extraction and enriching are completed, and the operation is simple, convenient and rapid; by using the hydrogen peroxide as the oxidant, and using the ferric chloride as a catalyst, the process of oxidizing the anise oil into anisic acid has the advantages of fewer impurities, high purity, small energy consumption and simple operation; the oxidizing process does not use an organic solvent and a heavy metal catalyst, so that the residue of organic solvent is avoided, and the prepared anisic acid does not contain any other byproducts, and can be directly applied to foods and cosmetics.

Description

technical field [0001] The invention relates to the preparation of an organic acid, in particular to an efficient and environment-friendly preparation method of anisic acid. Background technique [0002] Star anise is a plant of the star anise family, and its fruit star anise is extremely high in yield in the west and south of Guangxi, my country, and has high medicinal and edible value. The fennel oil distilled and extracted from the fruit of star anise has antibacterial and antihistamine effects, and has good cosmetic effects. It is also widely used as industrial additives, food preservatives and polymer monomers. The main component of fennel oil is anethole, whose chemical name is p-propenylanisole, which is crystallized at 20-21°C and liquid at higher than 23°C. The relative density should be 0.975-0.988 at 25°C. After oxidation of fennel oil, the product anisic acid, namely p-methoxybenzoic acid, can be obtained. Anisic acid is a common food spice, a new type of antio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/285C07C65/21C11B1/16C11C3/00
Inventor 曹华茹李建胡桢靓陈凡羊梦诗
Owner 嘉兴德扬生物科技有限公司
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