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Method for producing industrial grade sodium gluconate or calcium gluconate from yellow ginger starch

A technology for sodium gluconate and calcium gluconate, which is applied in the field of producing technical grade sodium gluconate or calcium gluconate by using turmeric starch, can solve the problems of unfavorable influence of product quality, yellow and dark color of turmeric starch, low solubility of turmeric starch, and the like, Achieve long service life, improve yield and purity, ensure color and quality

Inactive Publication Date: 2011-04-27
HUBEI DANAO PHARMA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Analyzing the reason, it may be that the saponin contained in the turmeric starch has certain toxicity, and the saponin has a coagulation effect on the fibers and proteins in the turmeric starch, making it difficult to separate from the starch, so that the solubility of the turmeric starch is low , and the color of turmeric starch is yellow and dark, which has an adverse effect on the quality of its products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of method utilizing turmeric starch to produce industrial grade sodium gluconate, comprises the steps:

[0036] 1) Pretreatment of turmeric starch: mix turmeric starch with water so that the mass percentage of starch in the starch milk is 30%, stir and mix for 30 minutes, then put it into a high-pressure container, at a pressure of 0.1MPa and a temperature of 120°C Boil at low temperature for 20 minutes, take it out, add 0.5mol / L sodium hydroxide solution to adjust the pH of the starch milk to 6.0, and ultrasonically oscillate at 90°C for 30 minutes, the ultrasonic frequency is 23KHz, ultrasonic oscillation can make the starch in the starch milk disperse evenly , to overcome the agglomeration phenomenon, improve its solubility, and also accelerate the separation of starch from impurities such as fiber and protein in starch milk, so as to improve the filtering effect of insoluble impurities in subsequent steps;

[0037] 2) Enzymatic liquefaction: 12 U of enzyme is...

Embodiment 2

[0044] A kind of method utilizing turmeric starch to produce industrial grade sodium gluconate, comprises the steps:

[0045] 1) Pretreatment of turmeric starch: mix turmeric starch with water so that the mass percentage of starch in the starch milk is 25%, stir and mix for 30 minutes, then put it into a high-pressure container, at a pressure of 0.12MPa and a temperature of 122°C Boil for 30 minutes, take it out, add 0.1mol / L sodium hydroxide solution to adjust the pH of the starch milk to 6.5, and ultrasonically oscillate for 30 minutes at 92°C with a frequency of 20KHz to make the starch in the starch milk disperse evenly and accelerate Separation of starch from impurities such as fiber and protein in starch milk;

[0046] 2) Enzymatic liquefaction: 10U of enzyme is required per gram of dry starch, and bacterial α-amylase is added to the starch milk, stirred for 20 minutes, and after the slurry is evenly mixed, steam jet liquefaction is carried out at 95°C. In the steam jet...

Embodiment 3

[0053] A kind of method utilizing turmeric starch to produce technical grade calcium gluconate, comprises the steps:

[0054] 1) Turmeric starch pretreatment: mix turmeric starch and water so that the mass percentage of starch in the starch milk is 25%, stir for 25 minutes, and then put it into a high-pressure container, at a pressure of 0.15MPa and a temperature of 125°C Boil at low temperature for 20 minutes, take it out, add saturated lime aqueous solution at 0.1mol / L to adjust the pH value of the starch milk to 6.2, and ultrasonically oscillate at 90°C for 25 minutes at a frequency of 24KHz to disperse the starch in the starch milk evenly and accelerate the starch Separation of starch from impurities such as fiber and protein in milk;

[0055]2) Enzymatic liquefaction: 15U of enzyme is required per gram of dry starch, and bacterial α-amylase is added to the starch milk, stirred for 25 minutes, and after the slurry is evenly mixed, steam jet liquefaction is carried out at 9...

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Abstract

The invention relates to a method for producing industrial grade sodium gluconate or calcium gluconate from yellow ginger starch. The method comprises the following steps: (1) pre-treating the yellow ginger starch; (2) liquefying by an enzyme method to obtain starch liquefied liquid; (3) saccharifying by the enzyme method to obtain starch saccharified liquid; (4) removing impurities from the starch saccharified liquid and decolorizing to obtain a colorless saccharified liquid; (5) adding a Pd / C catalyst to the saccharified liquid to catalytically oxidize the glucose in the saccharified liquid to prepare sodium gluconate or calcium gluconate; (6) vacuum filtering and recovering the catalyst; and (7) decolorizing the filtrate, concentrating by vacuum evaporation, and crystallizing or spray drying to obtain the finished product of the sodium gluconate or the calcium gluconate. The conversion rate of the yellow ginger starch and the yield of the sodium gluconate or the calcium gluconate are high, the purity is higher than 90%, and the sodium gluconate or the calcium gluconate has high quality and lower production cost, and is especially suitable to be used as a cement enhancer.

Description

technical field [0001] The invention relates to a production method of sodium gluconate or calcium gluconate, in particular to a method for producing industrial-grade sodium gluconate or calcium gluconate by using turmeric starch. Background technique [0002] Turmeric, also known as Kugalangal and Huotougen, is a unique species in my country, and its scientific name is Dioscorea shield leaf ( Discover zingiberensis C. H. Wright), is a perennial vine of the genus Dioscorea in the Dioscoreaceae family. Its rhizomes are yellow or orange and contain about 1.1% to 16.5% diosgenin (sapogenin). In addition, turmeric rhizomes also contain about 45% to 50% starch , 40% to 50% cellulose and a small amount of tannins, alkaloids, pigments, etc. Diosgenin is a raw material for the synthesis of more than 30 kinds of medicines such as steroid hormone drugs and steroid contraceptive drugs, and its application is very extensive. Therefore, the demand for turmeric, which has the highest d...

Claims

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Application Information

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IPC IPC(8): C07C59/105C07C51/41C12P19/02C12P19/14
Inventor 池汝安肖春桥崔立新李元如张美黄绪棚
Owner HUBEI DANAO PHARMA CO LTD
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