Degumming process of tuna oil

Abstract

The invention relates to a degumming process of tuna oil, and belongs to the technical field of aquatic product processing. The degumming process comprises the following steps: pretreating tuna crudeoil; adding distilled water into the tuna crude oil after pretreatment, stirring evenly, then adding a compound deglycosylation enzyme, and carrying out preliminary enzymatic hydrolysis, to obtain primary enzymatic hydrolysis fish oil; adding a compound proteinase into the primary enzymatic hydrolysis fish oil, and carrying out enzymatic hydrolysis again, to obtain enzymatic hydrolysis fish oil; heating the enzymatic hydrolysis fish oil, carrying out enzyme inactivation treatment, then cooling to room temperature, centrifuging, and taking an upper floating oily matter, namely the primary degummed fish oil; and adding an acid degumming agent into the primary degummed fish oil, carrying out acid degumming, and then centrifuging to take a supernatant, namely degummed tuna oil. The degumming process has the advantages of mild reaction process, easy control, good degumming effect and high efficiency, and does not destroy the effective nutrient substances in the tuna oil.

Description

technical field [0001] The invention belongs to the technical field of aquatic product processing and relates to a degumming process of tuna oil. Background technique [0002] At present, the production, processing and sales of tuna by domestic enterprises are mainly exported to foreign countries in the form of frozen fish fillets in addition to fresh sales, and a large amount of waste is generated during the processing process, such as red meat parts, fish heads, fish skins, Viscera, fins, etc. Due to backward processing technology, these leftovers are mainly produced and processed into fish meal by wet process (cooking and pressing). During this period, the crude fish oil produced with fish meal is not highly utilized due to its dark color and difficult refining, degumming and decolorization. This is also a problem that has plagued fish oil companies for many years. Therefore, further research on refining technology is of great significance for its deep processing technol...

AI Technical Summary

Problems solved by technology

Studies have shown that domestic research on marine fish oil degumming mainly focuses on acid degumming, and phosphoric acid is mostly used. For example, Chinese patent application CN201010176523.3 discloses a method for extracting fish oil from discarded squid liver. Fish oil is degummed, and experiments have shown that direct degumming with phosphoric acid is not suitable for degumming crude fish oil rich in various impurities, the degumming rate is low and the resulting degummed oil is dark in color

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