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Gibberellic acid GA4+7 mother liquor purification product and purification method

A purification method and technology of gibberellic acid, applied in the direction of organic chemistry, etc., can solve the problems of high cost, large amount of impurities, difficult handling, etc., and achieve the effects of small equipment investment, small environmental impact, and simple operation.

Active Publication Date: 2017-02-01
JIANGSU FENGYUAN BIOENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low content of GA4+7 in the mother liquor and the large amount of impurities, it is difficult to handle and the cost is high. It is urgent to find a method for treating GA4+7 mother liquor

Method used

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  • Gibberellic acid GA4+7 mother liquor purification product and purification method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 1. Take 400L of gibberellic acid GA4+7 to concentrate and remove the low-content thick mother liquor of n-butanol. The content of gibberellic acid GA4+7 is 0.48%, add 800L of ethyl acetate and oxalic acid in a ratio of 1:2:0.125 by volume, and stir Raise the temperature to 75°C to fully dissolve gibberellic acid GA4+7 in ethyl acetate, keep the temperature for 10 minutes and stop stirring, cool the cooling water to room temperature, let stand for 10 hours to separate layers, and settle a large amount of impurities in the mother liquor. The appearance of the solution is dark yellow, the pH value is 2.53, and the motor speed is 40 revolutions per minute.

[0046] 2. Under vacuum conditions, absorb the upper ethyl acetate solution under negative pressure, add 980L of water at a ratio of 1:1, stir and raise the temperature to 40°C, let stand for 1 hour, keep the upper ethyl acetate phase with a lighter specific gravity, and discard the lower layer of water Go to the sewage ...

Embodiment 2

[0052] 1. Take 436L of gibberellic acid GA4+7 to concentrate and remove the low-content thick mother liquor of n-butanol. The content of gibberellic acid GA4+7 is 0.42%. Add 872L of ethyl acetate and oxalic acid in a ratio of 1:2:0.125 by volume, and stir Raise the temperature to 75°C to fully dissolve gibberellic acid GA4+7 in ethyl acetate, keep the temperature for 10 minutes and stop stirring, cool the cooling water to room temperature, let stand for 10 hours to separate layers, and settle a large amount of impurities in the mother liquor. The appearance of the solution is dark yellow, the pH value is 2.38, and the motor speed is 40 revolutions per minute.

[0053] 2. Under vacuum conditions, absorb the upper ethyl acetate solution under negative pressure, add 1088L of water at a ratio of 1:1, stir and raise the temperature to 40°C, let stand for 1 hour, keep the upper ethyl acetate phase with a lighter specific gravity, and discard the lower layer of water Go to the sewage...

Embodiment 3

[0058] 1. Take 450L of gibberellic acid GA4+7 to concentrate and remove the low-content thick mother liquor of n-butanol. The content of gibberellic acid GA4+7 is 0.39%. Add 900L of ethyl acetate and oxalic acid in a ratio of 1:2:0.125 by volume, and stir Raise the temperature to 75°C to fully dissolve gibberellic acid GA4+7 in ethyl acetate, keep the temperature for 10 minutes and stop stirring, cool the cooling water to room temperature, let stand for 10 hours to separate layers, and settle a large amount of impurities in the mother liquor. The appearance of the solution is dark yellow, the pH value is 2.72, and the motor speed is 40 revolutions per minute.

[0059] 2. Under vacuum conditions, absorb the upper layer of ethyl acetate solution under negative pressure, add 1130L of water at a ratio of 1:1, stir and raise the temperature to 40°C, let stand for 1 hour, keep the upper layer of ethyl acetate phase with lighter specific gravity, and discard the lower layer of water ...

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Abstract

The invention discloses a gibberellic acid GA4+7 mother liquor purification product and a purification method. The purification method comprises uniformly mixing the mother liquor, an organic solvent and oxalic acid to obtain a mixed solution, separating an organic layer from the mixed solution and carrying out condensation. A volume ratio of the mother liquor, the organic solvent to oxalic acid is 1: 2: 0.125. The purification method has simple processes and realizes a low equipment investment and a recovery rate of 85% or more. Ethyl acetate can be recycled after decolored liquid condensation so that environmental influence is low.

Description

technical field [0001] The invention relates to a purified product of gibberellic acid GA4+7 mother liquor and a purification method, belonging to the field of biochemical preparation. Background technique [0002] Gibberellic acid is a ubiquitous plant hormone. The chemical structure belongs to diterpenoid acids, derived from a tetracyclic skeleton. Widely distributed in quilts, gymnosperms, ferns, brown algae, green algae, fungi and bacteria. Used in potato, tomato, rice, wheat, cotton, soybean, tobacco, fruit trees and other crops to promote their growth, germination, flowering and fruiting; it can stimulate fruit growth and increase the seed setting rate, and it is suitable for rice, cotton, vegetables, melons and fruits, green manure, etc. There is a significant effect of increasing production. There are many kinds of gibberellic acid, among which GA4+7 is composed of GA4 and GA7, which can promote cell growth, change fruit shape, improve quality, and at the same tim...

Claims

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Application Information

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IPC IPC(8): C07D307/93
CPCC07D307/93
Inventor 徐直周小东姜加杰丁小鹰
Owner JIANGSU FENGYUAN BIOENG
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