Method for extracting and separating natural taurine from octopus leftovers

Abstract

The invention discloses a method for extracting and separating natural taurine from octopus leftovers. The method comprises the following steps that: raw materials is washed clean and made into taurine-extracting solution; water soluble protein is separated out from the solution by an isoelectric-point precipitation method, and separation liquid containing taurine, other amino acids and a small amount of inorganic salt is obtained; through the different characteristics of anion-cation exchange resin, the taurine, the other amino acids and the inorganic salt are separated by use of the anion-cation exchange resin; an separated amino-acid solution can be utilized for other aims after collection; cation adsorption taurine is eluted by use of hot deionized water; eluent obtained through collection is concentrated, added with ethanol and crystallized at a low temperature so as to precipitate the taurine; and the precipitated taurine is separated out, recrystallized and purified so as to obtain high-purity acicular natural taurine crystals. The method has the advantages of succinct operation, short cycle, high value, no pollution and the like, greatly improves the utilization value of the octopus leftovers, and increases the technological content of octopus processing.

Description

Technical field: [0001] The invention relates to a method for extracting and separating natural taurine, in particular to a method for extracting and separating natural taurine from octopus leftovers by using isoelectric point precipitation and protein separation technology. Background technique: [0002] Taurine is a non-protein amino acid containing bovine. It is one of the main components of the precious medicinal material taurine and is widely used in food and medicine industries. [0003] Natural taurine mainly exists in the viscera of mammals, and it is relatively scattered and in small amount, which is far from meeting people's needs. Because octopus is an aquatic product with high natural taurine content in food, taurine is generally extracted from octopus leftovers, and then concentrated and refined. [0004] Although octopus leftovers contain extremely high taurine, due to the limitations of processing technology and equipment, it is generally difficult to further...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method for extracting and separating natural taurine from octopus leftovers by utilizing the isoelectric point precipitation separation protein technology in order to overcome the cumbersome production process problems caused by repeated filtration and reverse osmosis concentration in the above-mentioned method, The method has the advantages of simple process, convenient operation and high purity of extracted taurine

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