2022/11/01

Extraction process of winterized fish oil

Surfactant fractionation is also called emulsion fractionation. Dry fractionation is the most common and commonly used fractionation technology. It means that the oil will be completely melted into liquid oil without adding any solvent, and the oil will be stirred at a low speed while slowly cooling to a certain temperature, so that the solid fat components in the oil will crystallize first, and then the solid and liquid phases will be separated. Solvent fractionation refers to the technology of separating the solid lipid crystals by dissolving the oil in a certain proportion with organic solvents (such as n-hexane, acetone, etc.) and then wintering. Although the effect of solvent fractionation is better than that of dry fractionation, it generally requires a lower wintering temperature than that of dry fractionation and consumes a large amount of organic solvents harmful to human health. Surfactant fractionation is to add a certain proportion of surfactant (such as sodium dodecyl sulfonate, etc.) and water or electrolyte (such as sodium chloride, magnesium sulfate, etc.) aqueous solution to emulsify and suspend the crystalline solid fat in the aqueous phase after the oil is winterized and crystallized in a dry way, so as to accelerate the separation efficiency of crystalline solid fat. The separating efficiency of surfactant is higher than that of dry method, which is suitable for large-scale production; However, many surfactants are not allowed to be used in edible oil processing, so their practical application is limited.

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2022/11/01

What is winterization in winterized fish oil

Winterization is to slowly stir the oil, control the cooling rate, and cool it to about 4-6 ℃ for about 24 hours, so that the solid fat can generate larger crystals and separate out. After filtration, the oil and solid fat are separated. After degumming, deacidification, decoloration and deodorization, a small amount of solid fat will precipitate in the form of flocculent in winter, affecting the appearance.

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2022/11/01

Properties and Uses of Squid Oil

Squid oil is widely used in food additives, such as the preparation of squid essence and sea fish mixed feed. Squid oil is rich in various unsaturated fatty acids such as EPA and DHA. It has the functions of lowering blood pressure, eliminating fatigue, preventing cerebral thrombosis, and improving memory. Therefore, squid oil is widely used in food, medical, feed industry and other fields. It is separated and purified from the fresh squid, because it is rich in a variety of fatty acids, DHA, EPA, etc., and with its unique squid smell, it can increase the feeding attraction function, which helps to improve the feeding rate of fish and shrimp and shorten the growth time. As squid liver oil is rich in a variety of unsaturated fatty acid cholesterol than any other fish oil, it is an important product for fish and shrimp farming.

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2022/11/01

Learn about squid oil

Squid oil is the waste produced in processing squid. At present, many squid processing regions and enterprises in China discard these components, causing great waste and environmental pollution. Some enterprises with certain capabilities add these oils to feed. Fish oil contains more unsaturated fatty acids, which are easy to be oxidized and rancid to produce oysters. However, due to the low added value of feed, it is impossible to further process the crude oil. In order to make full use of this part of resources, its oil should be processed into health products to fully increase the added value. Fresh squid viscera was used as raw material to extract squid viscera oil by light alkali hydrolysis. The effects of hydrolysis time, pH, ratio of material to liquid, hydrolysis temperature and salting out amount on the extraction rate of squid visceral oil were studied respectively. The extraction conditions were as follows: hydrolysis time 90

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2022/11/01

Let's have a brief understanding of fish paste

Fish lysate (SW) is a by-product of fish meal production. It contains a large number of small granular substances suspended in water, such as protein, peptide, amino acid and other chemical books dissolved in water, as well as biogenic amine, trimethylamine oxide and a small amount of oil components, trace elements, etc. These bioactive ingredients have an irreplaceable role in the nutritional value of carnivorous fish.

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2022/11/01

What is fish paste

Fish lysate contains a large number of small molecule polypeptides, amino acids, taurine, minerals and other beneficial ingredients, which retain the unknown growth factors unique to fish meal. It has a good role in inducing food and promoting growth of aquatic, livestock and poultry breeding animals. It is a good source of high-quality animal protein, food attractant and nutritional supplement, which can enhance the digestion and absorption function of animals, intestinal development, immune function and anti stress ability of animals. The use of this product can reduce or replace the use of chemical food attractants in aquatic animal feed, replace the use of squid paste plasma, provide consumers with green, safe and healthy products, increase product added value, and improve the enthusiasm of farmers.

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