Method for extracting natural taurine from octopus residue using membrane separation technology

Abstract

The disclosed method to extract natural taurine from octopus leftover with film separation technique comprises: disluting the material into slurry; separating and obtaining the supernatant and solid material; separating the supernatant to obtain clarified solution and concentrated liquid; separating the clarified solution with second hyperfiltration membrane to concentrate with roll-type reverse osmosis membrane groupware; recovering the infiltrated liquid as supplement for desalination water; separating the reverse osmosis concentrated liquid into taurine and amino acid for canning with ion exchange adsorption method; cleaning the taurine adsorbed by resin, collecting the eluent to add ethanol and obtain taurine suspension; crystallizing and purifying to obtain the high-pure rod-shaped natural taurine crystal. This invention is simple and fast, has high value and no pollution.

Description

technical field

[0001] The invention relates to a method for extracting natural taurine, in particular to a method for extracting natural taurine from octopus leftovers by using membrane separation technology. Background technique

[0002] Taurine is a sulfur-containing non-protein amino acid with a chemical name of 2-aminoethanesulfonic acid and a molecular formula of C 2 h 7 NO 3 S, the structural formula is H 2 N-CH 2 -CH 2 -SO 3 H, it is one of the main components of the precious medicinal material taurine, which has been widely and effectively used in food and medicine industries.

[0003] Octopus, commonly known as eight-banded octopus, has at least 142 varieties, and China is one of its main producing areas. Octopus is an aquatic product with a very high natural taurine content in food, reaching 31.2 μmol / g, equivalent to 390 mg / 100g (see literature: Chen Yuzhen, Taurine content in food, amino acids and biological resources (J), 1994, 4 ), the high content of ...

Examples

Embodiment 1

[0028] see figure 1 , the present invention adopts membrane separation method to directly extract natural taurine and amino acid from octopus leftovers, and its technology is as follows:

[0029] The leftovers produced in the process of processing octopus in the factory include raw materials such as viscera, tail tip, eye socket, and posterior pituitary gland. After concentration, the ink sac is removed first, and the foul-smelling viscera and other pollutants are removed, and then cleaned. Octopus leftovers 1 are crushed and added with 10 times desalted water 2 to dilute the slurry and pumped to a centrifuge for solid-liquid separation 3. The separated solid material is used as raw material for feed 4, and the supernatant liquid at the other end is transferred to the first stage The ultrafiltration membrane filter 5 performs selective separation, and the filtration membrane molecular weight cut-off of the primary ultrafiltration membrane filter is 40,000. The concentrate obt...

Embodiment 2

[0032] Similar to Example 1, the difference is that the octopus leftovers are pulverized and then diluted with 8 times desalted water to dilute the slurry and then pumped to a centrifuge for solid-liquid separation and filtration. The filter membrane molecular weight cut-off of the primary ultrafiltration membrane filter is 30,000. The ultrafiltration membrane molecular weight cut-off of the secondary ultrafiltration membrane filter is 3500. In order to fully separate and penetrate the effective components in the raw materials, desalted water should be added to the second half of the first-stage ultrafiltration membrane filter and the second half of the second-stage ultrafiltration membrane filter to supplement circulating ultrafiltration. Due to the large volume of ultrafiltration clarified liquid (10 times desalted water dilution), if it is directly purified and crystallized, its energy consumption and loss are relatively large, so it must be concentrated by the roll-type re...

Embodiment 3

[0034]Similar to Example 1, the difference is that the octopus leftovers are pulverized and then diluted with 9 times desalted water to dilute the slurry and then pumped to a centrifuge for solid-liquid separation and filtration. The filter membrane molecular weight cut-off of the primary ultrafiltration membrane filter is 40,000. The ultrafiltration membrane molecular weight cut-off of the secondary ultrafiltration membrane filter is 2500. In order to fully separate and penetrate the effective components in the raw materials, desalted water should be added to the second half of the first-stage ultrafiltration membrane filter and the second half of the second-stage ultrafiltration membrane filter to supplement circulating ultrafiltration. Due to the large volume of ultrafiltration clarified liquid (10 times desalted water dilution), if direct lipid extraction, purification and crystallization, its energy consumption and loss are relatively large, so it must be concentrated 5 t...

technical field

[0001] The invention relates to a method for extracting natural taurine, in particular to a method for extracting natural taurine from octopus leftovers by using membrane separation technology. Background technique

[0002] Taurine is a sulfur-containing non-protein amino acid with a chemical name of 2-aminoethanesulfonic acid and a molecular formula of C 2 h 7 NO 3 S, the structural formula is H 2 N-CH 2 -CH 2 -SO 3 H, it is one of the main components of the precious medicinal material taurine, which has been widely and effectively used in food and medicine industries.

[0003] Octopus, commonly known as eight-banded octopus, has at least 142 varieties, and China is one of its main producing areas. Octopus is an aquatic product with a very high natural taurine content in food, reaching 31.2 μmol / g, equivalent to 390 mg / 100g (see literature: Chen Yuzhen, Taurine content in food, amino acids and biological resources (J), 1994, 4 ), the high content of ...

Examples

Embodiment 1

[0028] see figure 1 , the present invention adopts membrane separation method to directly extract natural taurine and amino acid from octopus leftovers, and its technology is as follows:

[0029] The leftovers produced in the process of processing octopus in the factory include raw materials such as viscera, tail tip, eye socket, and posterior pituitary gland. After concentration, the ink sac is removed first, and the foul-smelling viscera and other pollutants are removed, and then cleaned. Octopus leftovers 1 are crushed and added with 10 times desalted water 2 to dilute the slurry and pumped to a centrifuge for solid-liquid separation 3. The separated solid material is used as raw material for feed 4, and the supernatant liquid at the other end is transferred to the first stage The ultrafiltration membrane filter 5 performs selective separation, and the filtration membrane molecular weight cut-off of the primary ultrafiltration membrane filter is 40,000. The concentrate obt...

Embodiment 2

[0032] Similar to Example 1, the difference is that the octopus leftovers are pulverized and then diluted with 8 times desalted water to dilute the slurry and then pumped to a centrifuge for solid-liquid separation and filtration. The filter membrane molecular weight cut-off of the primary ultrafiltration membrane filter is 30,000. The ultrafiltration membrane molecular weight cut-off of the secondary ultrafiltration membrane filter is 3500. In order to fully separate and penetrate the effective components in the raw materials, desalted water should be added to the second half of the first-stage ultrafiltration membrane filter and the second half of the second-stage ultrafiltration membrane filter to supplement circulating ultrafiltration. Due to the large volume of ultrafiltration clarified liquid (10 times desalted water dilution), if it is directly purified and crystallized, its energy consumption and loss are relatively large, so it must be concentrated by the roll-type re...

Embodiment 3

[0034]Similar to Example 1, the difference is that the octopus leftovers are pulverized and then diluted with 9 times desalted water to dilute the slurry and then pumped to a centrifuge for solid-liquid separation and filtration. The filter membrane molecular weight cut-off of the primary ultrafiltration membrane filter is 40,000. The ultrafiltration membrane molecular weight cut-off of the secondary ultrafiltration membrane filter is 2500. In order to fully separate and penetrate the effective components in the raw materials, desalted water should be added to the second half of the first-stage ultrafiltration membrane filter and the second half of the second-stage ultrafiltration membrane filter to supplement circulating ultrafiltration. Due to the large volume of ultrafiltration clarified liquid (10 times desalted water dilution), if direct lipid extraction, purification and crystallization, its energy consumption and loss are relatively large, so it must be concentrated 5 t...

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