Method for extracting ethyl ester enriched fish oil from fish oil refining byproduct

A technology of ethyl ester type fish oil and ethyl ester enrichment, which is applied in the fields of fat oil/fat refining, fat oil/fatty acid recovery from waste, and fat production, etc. It can solve the problems of making ends meet, polluting the environment, waste of resources, etc., and solves the problem of recycling , the best economic benefits, the effect of increasing value

Active Publication Date: 2014-01-15
舟山新诺佳生物工程有限责任公司
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Problems solved by technology

A large amount of soapstock and solid fat produced during fish oil refining still contain polyunsaturated fatty acids such as EPA and DHA. However, because these by-products have the characteristics of fishy smell, many impurities, and dark color, some companies acidify them with sulfuric acid...

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  • Method for extracting ethyl ester enriched fish oil from fish oil refining byproduct
  • Method for extracting ethyl ester enriched fish oil from fish oil refining byproduct
  • Method for extracting ethyl ester enriched fish oil from fish oil refining byproduct

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0023] 1. Raw materials:

[0024] Fish oil refining by-product soapstock and cold-filtered solid fat: Provided by Zhejiang Shenzhou Marine Biological Co., Ltd.

[0025] 2. Instruments and equipment

[0026] DSHZ-300 water bath constant temperature evaporator: Jiangsu Taicang City Experimental Equipment Factory;

[0027] HHS2 digital display constant temperature water bath: Jincheng Guosheng Experimental Instrument Factory, Jintan City, Jiangsu Province;

[0028] EL303 electronic balance: Mettler-Toledo Instruments Shanghai Co., Ltd.;

[0029] N-1001 rotary evaporator: Shanghai Ailang Instrument Co., Ltd.;

[0030] A-1000S water flow pumping instrument: Shanghai Ailang Instrument Co., Ltd.;

[0031] KDL1 short-range molecular distillation equipment: ULC GmbH, Germany;

[0032] CP3800 Gas Chromatograph: American Varian Company.

[0033] 3...

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Abstract

The invention relates to a method for extracting ethyl ester enriched fish oil from a fish oil refining byproduct, which comprises the following steps: by taking soapstock and solid lipid of the fish oil refining byproduct as raw materials, recovering the soapstock through an acid-based ethyl ester catalysis process, recovering the solid lipid through an alkali-based ethyl ester catalysis process, performing a secondary three-stage molecular distillation and primary urea inclusion combined process, and enriching to obtain the ethyl ester fish oil having high EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid) content. According to the invention, the process is simple and low in cost, solves the byproduct recovery problem during fish oil refining, avoids environmental pollution, changes the wastes into valuable substances, and greatly increases the value of the product; and the physical and chemical indices of the extracted ethyl ester fish oil product conform to the standard, the fish oil has no rancid flavor, the total content of EPA and DHA is respectively increased to 78.42% and 76.15%, and the fish oil achieves better economic benefits.

Description

technical field [0001] The invention relates to the field of fish oil refining, in particular to a method for extracting and enriching EPA and DHA ethyl ester type fish oil from by-products of fish oil refining. Background technique [0002] Refining of fish oil is the process of removing non-glyceride impurities in fish oil, mainly including degumming, deacidification, decolorization and deodorization [Hong Pengzhi, Liu Shucheng, Zhang Chaohua, etc. Refining of tuna oil and its fatty acid composition characteristics[J]. China Fats and Oils, 2006, 31 (6): 90-93; Wang Qiaolong, Deng Fangming, Tang Chunjiang, etc. Research progress in fish oil extraction and refining technology [J]. Grain and Food Industry, 2008, 15 (3): 10-12] . Alkali refining is the most used process for fish oil deacidification, neutralization of free fatty acids in fish oil with caustic soda [Cao Bowei, Chu Shilong. Application of solvent method in soapstock recycling [J]. Heilongjiang Medical Science, 1...

Claims

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Application Information

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IPC IPC(8): C11B13/00C11B13/02C11B3/02C11B3/12C11C3/00
CPCY02W30/74
Inventor 方旭波陈小娥蒋雅美余辉黄海华
Owner 舟山新诺佳生物工程有限责任公司
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