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New method for preparing natural benzaldehyde by hydrolyzing bay leaves oil

A technology of laurel leaf oil and benzaldehyde, which is applied to the preparation of carbonyl compounds by hydrolysis, organic chemistry, etc., can solve the problems of low yield, achieve high yield, and facilitate large-scale industrial production

Inactive Publication Date: 2003-10-08
SHANGHAI HUASHENG FLAVORING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved in the present invention is to disclose a new method for preparing natural benzaldehyde by hydrolysis of cinnamon leaf oil, so as to overcome the low yield in the prior art

Method used

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  • New method for preparing natural benzaldehyde by hydrolyzing bay leaves oil
  • New method for preparing natural benzaldehyde by hydrolyzing bay leaves oil

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Experimental program
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Embodiment 1

[0015] use figure 1 process shown. Cinnamon leaf oil and NaOH aqueous solution are sprayed into reactor 1 after being sprayed into reactor 1 by the two-channel nozzle 2 that is arranged on the top of reactor 1 respectively, make cinnamon leaf oil and alkaline substance react under atomized state, generate benzaldehyde, react The material at the bottom of the device 1 is sent to the nozzle 2 at the top by the circulation pump 3, and is recycled until the reaction is finished, and then adopts a conventional method to collect benzaldehyde from the reaction product.

[0016] The linear velocity of bay leaf oil at the outlet of nozzle 2 is 15 m / s, and the linear velocity of NaOH aqueous solution at the outlet of nozzle 2 is 50~300 m / s. The NaOH consumption is 0.02% of the bay leaf oil weight.

[0017] The preferred reaction temperature is 100-110°C, and the reaction time is 0.5-1.5 hours. The yield is 45.5%.

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Abstract

A process for preparing natural benzaldehyde by hydrolyzing cinnamon leaf oil includes respectively atomizing the cinnamon leaf oil and the aqueous solution of alkaline substance while spraying them in reactor, reacting to generate benzaldehyde, and collecting benzaldehyde from the resultant. Its advantage is high output rate.

Description

technical field [0001] The present invention relates to a kind of preparation method of natural fragrance, specifically relate to a kind of preparation method of natural benzaldehyde, more specifically relate to a kind of method of preparing benzaldehyde by hydrolyzing bay leaf oil as raw material. Background technique [0002] With the improvement of people's living standards, people's requirements for the health of food are getting higher and higher. Especially for spices added in food, higher requirements are put forward. People not only pay more and more attention to adopting various natural spices as food additives, but also hope that the natural spices used have higher quality and lower price. Benzaldehyde is an important spice used in food and has a wide range of applications in the food field. At present, a large amount of natural benzaldehyde comes from apricot oil, but its application in the food field is limited due to the difficulty in separating the cyanide co...

Claims

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Application Information

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IPC IPC(8): C07C45/42C07C47/228
Inventor 叶金大周文勇
Owner SHANGHAI HUASHENG FLAVORING
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