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Pretreatment decalcification method for preparing peptides from fish scales

A fish scale and pretreatment technology, applied in chemical instruments and methods, neutralized water/sewage treatment, chemical/physical/physical-chemical processes of applying energy, etc., can solve problems such as high cost and complicated operation, and achieve low collagen loss , The effect of high decalcification rate and lower production cost

Active Publication Date: 2020-11-03
FARM PROD PROCESSING & NUCLEAR AGRI TECH INST HUBEI ACAD OF AGRI SCI
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Problems solved by technology

[0004] Plasma-activated water (PAW) is a liquid obtained by plasma discharge in water or on the surface of water. It is a kind of highly acidic and high redox potential activated water, which can be used for sterilization and preservation of fruits and vegetables. , such as 107333870A discloses "a method for keeping fruits and vegetables fresh with atmospheric pressure low-temperature plasma activation solution". Using plasma activation solution to treat fruits and vegetables for sterilization and preservation has certain effects, but the plasma activation solution needs to use special gas and hydrogen peroxide water in this method Auxiliary preparation, high cost and complicated operation

Method used

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  • Pretreatment decalcification method for preparing peptides from fish scales
  • Pretreatment decalcification method for preparing peptides from fish scales
  • Pretreatment decalcification method for preparing peptides from fish scales

Examples

Experimental program
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preparation example Construction

[0029] The preparation example of PAW:

[0030] Use the low-temperature plasma dual-dielectric barrier liquid treatment generator to process and obtain PAW, set the current of the equipment to the measured current of the clamp meter 0.0, 0.05, 0.10, 0.20A, according to the power calculation formula: P=U×I×CosΦ (where U is the voltage 2000v, I is the actual measured current, cosΦ is the power factor (according to 0.85), and the power corresponding to the gears is 0, 0.085, 0.17, 0.34kw respectively. Prepare 30L of deionized pure water, and perform 0.0, 0.05, 0.10, 0.20A applied current cycle treatment respectively to obtain PAW. The pH value, temperature, conductivity and oxidation-reduction potential (ORP) value of PAW were measured with pH meter, thermometer, conductivity meter and potentiometer respectively. The measurement lasts for 49 hours. During the 1-hour discharge process, it is measured once every 5 minutes. After 48 hours of discharge, it is measured once every 8 h...

Embodiment 1

[0044] The fish scale raw material is cleaned, drained, and the surface moisture is dried until the water content is 10% by weight for later use. Preparation of PAW: Set the current to 0.20A, discharge the reaction for 30 minutes, and obtain PAW with a pH value of 2.49, a temperature of 44.3°C, a conductivity of 989μs / cm, and an ORP value of 598mV. Use a container to mix fish scales and PAW according to the material-to-liquid ratio (g:mL) of 1:10, and put the mixed solution together with the container into an ultrasonic instrument for de-impurity and demineralization, and set the ultrasonic power to 140W for 60 minutes. Then filter and wash the fish scales with water, and drain the water to obtain decalcified fish scales.

[0045] For comparison, the decalcification experiment of HCl+ultrasound and the decalcification experiment of HCl and PAW (oscillation frequency 120 rpm) were carried out at the same time. The decalcification time was 60 minutes, and the decalcification rat...

Embodiment 2

[0053] The fish scale raw material is cleaned, drained, and the surface moisture is dried until the water content is 20% by weight for later use. The PAW preparation process is the same as in Example 1, except that the current is set at 0.01A, and the discharge reaction is 60 minutes. The obtained PAW has an initial pH value of 3.36, a temperature of 31.3°C, a conductivity of 736 μs / cm, and an ORP value of 502 mV. Use a container to mix fish scales and PAW at a material-to-liquid ratio (g:mL) of 1:15. Put the mixed liquid together with the container into the ultrasonic instrument for de-impurity and demineralization, set the ultrasonic power to 150W, and the time is 60min. After demineralization, the fish scales are filtered and washed, and the water is drained to obtain decalcified fish scales. After treatment by this method, the decalcification rate of fish scales was 95.66%, the concentration of HYP in the filtrate was 7.58 μg / mL, and the pH of the filtrate returned to 7.2...

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Abstract

The invention relates to a pretreatment decalcification method for preparing peptide from fish scales, which solves the problems of long treatment time, a large quantity of decomposition and dissolution of fish scale collagen, high pH value of filtrate, environmental pollution and the like in the existing pretreatment decalcification methods. According to the technical scheme, the method comprisesthe following steps: pretreating fish scales, uniformly mixing the pretreated fish scales with plasma activated water, immediately carrying out ultrasonic treatment, filtering, cleaning and drainingthe mixture subjected to ultrasonic treatment to obtain decalcified fish scales, standing the filtered filtrate until the pH value reaches 6.8-7.4, and carrying out subsequent treatment on the wastewater. The method is simple in process, short in production period, high in decalcification rate and low in collagen loss, subsequent acid-base neutralization treatment links are reduced, and the methodis environmentally friendly.

Description

technical field [0001] The invention relates to the field of aquatic product processing, in particular to a pretreatment and decalcification method for preparing peptides from fish scales. Background technique [0002] my country is the largest freshwater fish farming country in the world. With the rapid development of freshwater fish processing industry, a large amount of waste, such as fish scales, is produced during the processing. Generally, the processing and utilization of fish scales is very low, and most of them are directly discarded, resulting in a waste of resources. In fact, fish scales are rich in collagen, and extracting collagen peptides from them can not only make full use of resources and increase the added value of fish processing, but also reduce the environmental burden, which is of great significance to promote the healthy development of fish processing industry. [0003] Fish scales are mainly composed of hydroxyapatite Ca5(PO4)3(OH) and type I collage...

Claims

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Application Information

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IPC IPC(8): B01J19/08B01J19/10C02F1/66
CPCB01J19/08B01J19/088B01J19/10C02F1/66
Inventor 鉏晓艳李海蓝熊光权廖涛白婵王炬光
Owner FARM PROD PROCESSING & NUCLEAR AGRI TECH INST HUBEI ACAD OF AGRI SCI
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