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A kind of preparation method of low-fluorine Antarctic krill hydrolyzed protein powder

A technology for hydrolyzing protein and Antarctic krill, which is applied in protein food ingredients, fish protein ingredients, food science, etc., can solve problems such as excessive heavy metal content, high salt content in protein powder, and non-compliance with food production requirements and specifications. , to achieve the effect of convenient operation and simple process

Active Publication Date: 2014-10-29
上海市水产研究所(上海市水产技术推广站)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since fluoride ions mainly exist in industrial sewage, the use of calcium chloride for ion replacement and the use of aluminum electrodes to enrich fluoride ions are derived from sewage treatment and defluoridation methods, which will cause high salt content in protein powder when applied to food production. Problems such as excessive ash and heavy metal content do not meet the requirements and specifications of food production

Method used

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  • A kind of preparation method of low-fluorine Antarctic krill hydrolyzed protein powder

Examples

Experimental program
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Effect test

Embodiment 1

[0009] (1) Take 1,000g of fresh Antarctic krill meat and place it in a reactor, add 2,000g of water, stir and heat in the reactor to 100-105°C, and keep it for 30 minutes.

[0010] (2) After reducing the liquid temperature to 45°C±2°C, add 0.2% trypsin, stir for 2 hours for constant temperature hydrolysis, raise the temperature to 95°C±2°C, and keep it for 20 minutes to inactivate the enzyme activity.

[0011] (3) Release the feed liquid, separate the slag liquid with a plate and frame filter, and filter out impurities and insoluble matter.

[0012] (4) The filtered feed liquid is dehydrated with nanofiltration membrane GE roll-type Ro membrane 1812 until the protein concentration in the feed liquid reaches 20%±2%.

[0013] (5) Add 4% (w / v) coconut shell activated carbon, raise the temperature to 75°C±2°C, and stir for 15 minutes.

[0014] (6) The feed liquid is filtered through a plate and frame filter to separate coconut shell activated carbon.

[0015] (7) Slowly add 5-7 ...

Embodiment 2

[0021] (1) Take 1000g of fresh Antarctic krill and 2000g of water, place them in a reaction kettle, stir and heat to 105°C±2°C, and keep for 30 minutes.

[0022] (2) Lower the temperature of the feed liquid to 45°C±2°C, add 0.2%-0.5% papain by weight of fresh Antarctic krill, and stir for 2 hours for constant temperature hydrolysis.

[0023] (3) Heat the hydrolyzate to 95°C±2°C. Leave for 15 minutes to inactivate the enzyme.

[0024] (4) Release the feed liquid, separate it with a centrifuge, and remove the shrimp shell and unhydrolyzed residue.

[0025] (5) The feed liquid is dehydrated once with a reverse osmosis membrane, and then concentrated to a feed liquid protein concentration of 20%±2% with a nanofiltration membrane GE roll-type Ro membrane 1812.

[0026] (6) Add coconut shell activated carbon 4% (w / v), heat up to 75°C±2°C, and stir for 15 minutes.

[0027] (7) The feed liquid is filtered with a plate and frame filter.

[0028] (8) Add 5 to 7 times of deionized wa...

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Abstract

A preparation method of a low-fluorine euphausia superb hydrolyzed protein powder relates to processing of a euphausia superb protein powder. The preparation method provided by invention is characterized by comprising the following steps: rubbing fresh euphausia superb, adding 2 times of water, mixing, heating to 100-105 DEG C, stirring for 30 min, cooling to an enzymolysis temperature, adding protease and carrying out enzymatic hydrolysis for 2 hours, heating to 90-95 DEG C, keeping for 20 min and killing enzyme, filtering to remove shrimp shell and impurities, letting a feed liquid pass through nanofiltration membrane to be dehydrated until the protein content is 20%+ / -2%, adding 4% of cocoanut active charcoal, heating to 70-80 DEG C, stirring for 15-30 min, filtering to remove cocoanut active charcoal, adding 5-7 times of deionized water to dilute a hydrolyzed protein fluid, dehydrating by the use of the nanofiltration membrane until the content of protein in the feed liquid is greater than or equal to 20%, adding 4% of cocoanut active charcoal, heating to 70-80 DEG C, stirring for 15-30 min, filtering to remove cocoanut active charcoal, carrying out vacuum concentration until the protein concentration is 35%-40%, and carrying out spray drying to prepare the dry protein powder.

Description

technical field [0001] The invention relates to a processing method for Antarctic krill protein powder, in particular to a method for preparing low-fluorine Antarctic krill hydrolyzed protein powder. Background technique [0002] Antarctic krill is a protein resource with huge reserves and great potential development and utilization value. Its appraised reserves are 400-600 million tons. Antarctic krill has a high protein content, and the protein content in muscle accounts for about 64% (in terms of dry matter). It is rich in amino acids, and the 8 kinds of essential amino acids account for 45.28%. It is a high-quality marine animal protein. Because Antarctic krill is in the marine ecological environment of high latitude and low temperature, during the process of carapace metamorphosis, it absorbs excess fluoride ions in seawater and combines with calcium and magnesium ions in the carapace, so that a large amount of fluorine is deposited in the carapace. After the shrimp d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23J1/04A23J3/34
Inventor 何兰王南平曹俊郭休玉
Owner 上海市水产研究所(上海市水产技术推广站)
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