Method for decolorizing peach gum hydrolysate

A technology of hydrolyzate and peach gum, which is applied in application, food preparation, food science, etc., can solve the problems of decolorization and loss of sugar without applying peach gum, and achieve the effect of increased quantity, easy operation and short dehydration time

Inactive Publication Date: 2012-05-09
FUZHOU UNIV
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Problems solved by technology

[0003] Only one article has been published on the decolorization of peach gum: Decolorization of peach gum hydrolyzate by activated carbon, which mainly involves decolorization of peach gum hydrolyzate by activated carbon adsorption, and some sugars will be adsorbed at the same time, resulting in sugar class loss
[0004] About cold arc (low temperature plasma), photocatalyst has not been applied to the report of peach gum decolorization at present

Method used

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  • Method for decolorizing peach gum hydrolysate
  • Method for decolorizing peach gum hydrolysate
  • Method for decolorizing peach gum hydrolysate

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Embodiment 1

[0028] Preferred embodiment 1: Clean the raw peach gum, remove the surface impurities, soak it in clean water to make it fully swell, add a certain amount of alkali reagent, boil it at 90°C for 2-3 hours, and carry out vacuum filtration , to remove impurities. Under the condition of pH=9, the peach gum hydrolyzate was decolorized by cold arc-photocatalytic technology, the cold arc working voltage was 22kv, and the initial concentration of peach gum hydrolyzate was 0.03kg / L. Titanium dioxide photocatalyst, after 19 minutes of treatment, the decolorization rate of peach gum hydrolyzate can be 76%.

Embodiment 2

[0029] Preferred embodiment 2: clean the raw peach gum to remove surface impurities, soak it in water to make it fully swell, add a certain amount of alkali reagent, cook at 95°C for 2 hours, and vacuum filter to remove Impurities. Under the condition of pH=11, the peach gum hydrolyzate was decolorized by cold arc-photocatalytic technology, the cold arc working voltage was 22kv, and the initial concentration of peach gum hydrolyzate was 0.01kg / L. Titanium dioxide is used as a photocatalyst, and the decolorization rate of the peach gum hydrolyzate is 88.3% after treatment for 19 minutes.

[0030] In addition, the decolorized peach gum hydrolyzate is placed in a vacuum dryer, and the temperature is controlled at -48°C for drying. After the concentration and dehydration rate reaches 80-90%, it is taken out and packaged to obtain the finished peach gum. .

[0031] The invention is simple, easy to operate, and applies the cold arc-photocatalysis technology to a new field; when tr...

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Abstract

The invention provides a novel method for decolorizing a peach gum solution by a cold plasma-photocatalysis technology. The method uses dielectric barrier discharge to produce cold plasma (low temperature plasma) and excites a photocatalyst at the same time to decolorize the peach gum solution. Original peach gum is used as a raw material and sequentially subjected to swelling, impurity removal and hybridization. The concentration of the hydrolysate of the original peach gum is 0.01 to 0.10 kg / L, and is decolorized by a cold plasma-photocatalysis reactor with external voltage of between 16 and 28 kv. The inside of the reactor is provided with a Raschig ring carrying the photocatalyst. Compared with the prior method for decolorizing peach gum, the method avoids chemical agent residue in peach gum products and is simple in process, short in decolonization time and good in effect. In addition, peach gum obtained after freeze drying can be widely used in medicine, food, chemical, printingand other industries.

Description

technical field [0001] The invention relates to the technical field of peach gum processing, in particular to a method for decolorizing a hydrolyzed solution. Background technique [0002] my country's peach gum resources are very rich and widely distributed, mainly concentrated in North China, Central China, Northwest China and other places. Since peach gum is a by-product, it is not widely used. At present, manufacturers mainly add sodium hypochlorite, H 2 o 2 As a decolorizing agent, but these will cause the residue of chemical reagents, so the application in food additives is limited. While using activated carbon to decolorize, some sugars will also be adsorbed. There are two invention patents on peach gum that have been publicly published, one of which is: a method for making solid peach gum and its products (application number: 94114268.X, publication number: CN 1107495A), mainly related to solid peach gum Its decolorization process mainly relies on chemicals such...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L1/277A23L5/49
Inventor 王中来张振王润地
Owner FUZHOU UNIV
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