Method for continuous phase transition extraction of Tilapia mossambica skin oil

Abstract

The invention provides a method for continuous phase transition extraction of Tilapia mossambica skin oil. The continuous phase transition extraction technology is adopted; according to the extractionconditions, an extraction agent is butane, the solid-liquid ratio is 10 g: 30-75 ml, the extraction temperature is 60-100 DEG C, the extraction pressure is 0.1-1 Mpa, the flow rate of the extractionagent is 200-350 L / h, continuous extraction is performed for 130-200 min, the analysis temperature is 50-60 DEG C, and the analysis pressure is 0-0.1 Mpa. The method has the advantages that extractionis efficient, the product has no solvent residue, and the aroma component retention ratio is high; the extraction pressure and the analysis pressure are lower than supercritical values, and meanwhilethe method has the advantages that the conventional solvent extraction volume is large, the batch handling capacity is large, and the production cost is low; the obtain Tilapia mossambica skin oil isorange yellow, strong in aroma, light in fishy smell, and the functional component DHA content can reach 50% or above.

Description

technical field [0001] The invention belongs to the technical field of animal oil extraction, in particular to a method for extracting tilapia skin oil. Background technique [0002] Tilapia has a wide range of food habits, rapid growth, low oxygen resistance, growth temperature of 16-38 ℃, and strong reproduction. The climate in Guangdong is very suitable for large-scale farming of tilapia. Maoming City, Guangdong Province was awarded "China Tilapia The annual output of tilapia is huge, and the production and processing process produces a large number of by-products, most of which are not effectively utilized, which not only wastes resources but also pollutes the environment. By-products of tilapia are used to produce fish oil, which increases the added value of products and generates economic benefits. [0003] Fish oil is a kind of oil extracted from fatty fish. It is rich in omega-3 polyunsaturated fatty acids and has health benefits such as anti-inflammatory and blood ...

AI Technical Summary

Problems solved by technology

The mechanical pressing method has long pressing time, low oil yield, many impurities, and poor oil quality, and is rarely used now; cooking method, high temperature has a great impact on fat quality, low extraction rate, and high energy consumption; organic solvent method has a long existence time, The efficiency is low, the solvent consumption is large, and it is easy to cause a series of problems such as solvent residue in the product; the enzymatic hydrolysis method is time-consuming and high in cost; while the supercritical fluid extraction method requires high equipment and complicated process, and the equipment volume is small, High cost and high energy consumption, not suitable for large-scale industrial continuous production