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Method for preparing natural p-hydroxy benzaldehyde from bamboo shoots

A technology for p-hydroxybenzaldehyde and bamboo shoots is applied in the field of natural biology, can solve problems such as toxicity, and achieve the effects of low cost and high product yield

Active Publication Date: 2015-12-02
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Antioxidants are an important part of food additives, which can prevent the deterioration of food ingredients due to oxidation. In order to improve the antioxidant capacity of food, antioxidants are often added in the process of food processing, storage, and fresh-keeping. Currently, most of them are artificially synthesized. Antioxidants such as Butylated Hydroxyanisole Synthetic antioxidants such as Butylated Hydroxyanisole (BHA), Butylated Hydroxytoluene (BHT), Propyl Gallate (PG) and Tertiary Butyl Hydroquinone (TBHQ) , but toxicity experiments have shown that synthetic antioxidants have certain toxicity and carcinogenic effects, and more and more countries have begun to restrict or ban the use of certain synthetic antioxidants

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take fresh Dragon Bamboo ( Dendrocalamus sinicus) Bamboo shoots 5kg, reflux extraction 3 times with 25kg of mass percent concentration 80% ethanol, each time 3 hours, filter, merge filtrate, after filtrate shrinks to ethanol-free, centrifugal separation removes precipitation, obtains solution; Solution is added macroporous resin D Adsorbed in -101 column, after 3 times of water elution, elute with ethanol solution with a mass percentage concentration of 80%, collect the eluate containing the target component, concentrate until no ethanol to obtain a concentrated solution; the concentrated solution is extracted 3 times with chloroform , combine the extracts, concentrate to get the extract, mix in 100 mesh column chromatography silica gel with 1.5 times the mass of the extract, mix the sample silica gel for routine drying, and then load the sample to the silica gel column for elution; mix petroleum ether and acetone Liquid (made by mixing petroleum ether and acetone at a...

Embodiment 2

[0028] Take fresh Dragon Bamboo ( Dendrocalamus sinicus) Bamboo shoots 5kg, reflux extraction 2 times with the ethanol of 35kg mass percentage concentration 70%, each time 3 hours, filter, merge filtrate, after filtrate shrinks to ethanol-free, centrifugal separation removes precipitation, obtains solution; Solution is added macroporous resin AB Adsorbed in the -8 column, eluted with 2 times of water, eluted with an ethanol solution with a concentration of 80% by mass percentage, collected the eluate containing the target component, and concentrated it to no ethanol to obtain a concentrated solution; the concentrated solution was extracted with ethyl acetate 2 times, combine the extracts, concentrate to obtain the extract, mix in 200 mesh column chromatography silica gel with 1.5 times the mass of the extract, mix the sample silica gel for conventional drying, and then load the sample to a normal phase silica gel column for elution; Elute with a mixed solution of ethyl acetat...

Embodiment 3

[0030] Take fresh Dragon Bamboo ( Dendrocalamus sinicus) Bamboo shoots 5kg, reflux extraction 3 times with the ethanol of 40kg mass percentage concentration 90%, each time 2 hours, filter, merge filtrate, after filtrate shrinks to ethanol-free, centrifugal separation removes precipitation, obtains solution; Solution is added macroporous resin HZ Adsorbed in -816 column, eluted with 3 times of water, eluted with ethanol solution with a mass percentage concentration of 85%, collected the eluate containing the target component, and concentrated to no ethanol to obtain a concentrated solution; the concentrated solution was extracted 4 times with chloroform , combined the extracts, concentrated to obtain the medicinal extract, mixed into 300 mesh column chromatography silica gel with 1.5 times the mass of the medicinal extract, mixed the sample silica gel for routine drying, and then loaded the sample onto a normal phase silica gel column for elution; with petroleum ether and aceto...

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Abstract

The invention discloses a method for preparing natural p-hydroxy benzaldehyde from bamboo shoots. The method comprises the following steps: crushing the bamboo shoots, and carrying out refluxing extraction with ethanol; recovering ethanol to obtain an extract, conducting adsorption on the extract with macroporous adsorption resin, carrying out elution with an ethanol solution, and concentrating the obtained eluent; carrying out extraction with chloroform, ethyl acetate or n-butanol, carrying out concentration, adding silica gel for mixing and stirring, drying the stirred mixture, and placing the dried mixture on a silica gel column; carrying out column chromatography with a petroleum ether-acetone mixed solution or a petroleum ether-ethyl acetate mixed solution as a mobile phase, collecting eluents containing the target component, and carrying out solvent recovery and drying to obtain a crude product of p-hydroxy benzaldehyde ; carrying out recrystallization to obtain a pure product of p-hydroxy benzaldehyde. The method has the advantages that acids, alkalis or other organic solvents are not needed, the preparation process is pollution-free to the environment, the technology is simple, the cost is low and the product yield is high, thereby being suitable for industrialized production.

Description

technical field [0001] The invention belongs to the technical field of natural biology, in particular to a method for preparing natural p-hydroxybenzaldehyde from bamboo shoots. Background technique [0002] Bamboo shoots are the tender stems of the perennial plant bamboo of the Gramineae family. They have been called "treasures in dishes" since ancient times and have been eaten in my country for more than 2,500 years. Bamboo shoots are fresh and tender, with crispy meat, delicious taste and rich nutrition. It is a natural functional food with low sugar, low fat and high protein. The main function of bamboo shoots is edible. In addition, bamboo shoots are also widely used in the form of extracts in food, beverages, health (functional) foods, natural medicines, and food additives and cosmetic additives. The extraction, separation, structural identification and biological activity studies of the chemical components of bamboo shoots showed that p-hydroxybenzaldehyde is one of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C47/565C07C45/78
CPCC07C45/78C07C47/565
Inventor 曹建新李宇真程桂广高飞万宗
Owner KUNMING UNIV OF SCI & TECH