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Preparation method of microalgae edible oil

A technology for edible oil and microalgae, which is applied in the direction of fat oil/fat refining, fat oil/fat production, fat production, etc., can solve problems such as insufficient decolorization reaction, and achieves reduction of operational complexity, simple and fast operation, and simplified processing operations. Effect

Pending Publication Date: 2020-06-05
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Introduction of several oil decolorization processes, China Oils and Oils, 2000, 25(5):7-9), conventional methods are not enough to achieve decolorization reaction

Method used

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  • Preparation method of microalgae edible oil
  • Preparation method of microalgae edible oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1 Algae powder broken wall

[0020] (1) Ball milling to break the wall. Chlorella algae powder is milled for 3 hours using a planetary ball mill at a speed of 400-500rpm. The algal flour is then collected.

[0021] (2) High-pressure extrusion to break the wall. Extrude for 5-10 minutes under the pressure condition of 80-120MPa using a high-pressure extruder. The algal flour is then collected.

[0022] (3) High-speed homogenization and crushing. Use a high-speed crusher to crush the algae powder for 3-5 minutes at a speed of 10,000 rpm. The algal flour is then collected.

[0023] Microscopic examination of the algae powder showed no visible cell morphology after ball milling, but a small amount of cells could be seen after high-speed extrusion and homogenate crushing. Ball milling is therefore preferred.

Embodiment 2

[0025] according to figure 1 The presented procedure was carried out for the preparation of edible oil from microalgae. Taking the ball-milled chlorella powder raw material obtained in Example 1 as an example, the oil was extracted. Use food-grade solvent ethanol to extract the algae powder, wherein the ratio of algae powder to solvent is 1g: 3-10mL. In order to avoid the loss of solvent during the extraction process, condensing and reflux extraction is adopted, the extraction temperature is 60° C., and the extraction time is 2 to 6 hours. The extraction process uses mechanical agitation for mixing.

[0026] After the extraction, the extract was filtered and the filtrate was collected. The filter cake was washed twice with the corresponding solvent. The target edible oil is obtained through degumming and activated clay decolorization.

Embodiment 3

[0028] according to figure 1 In the process described, the chlorella algae powder obtained by ball milling was extracted according to the extraction process described in Example 2, using hexane as a solvent, and the solvent phase was collected. Add hot water to the solvent phase at a ratio of 1:0.2~0.5 (oil:water, w / w), and stir for 1~6 hours at 60~80°C with condensing reflux to fully mix the oil and water for degumming treatment. The mixed system is then left to stand until the two phases are clearly separated. The upper oil phase is used for further clay decolorization treatment to obtain microalgae oil, and the lower colloidal oil bottom is collected for the purification of phospholipids and glycolipids.

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Abstract

The invention relates to separation and purification of grease in chlorella, in particular to a separation and purification method for preparing edible oil from microalgae. Chlorella powder serves asa raw material, solvent extraction, primary decoloration, secondary extraction and secondary decoloration are performed after the chlorella powder is crushed, and two microalgae edible oil products are prepared after solvents are removed through evaporation. The method has the advantages of simplicity, convenience and quickness in operation and the like, facilitates simplification of downstream processing operation, and facilitates comprehensive utilization of biomass in microalgae.

Description

technical field [0001] The invention relates to the technology for preparing edible oil from microalgae, in particular to a method for preparing edible oil from chlorella as raw material. [0002] technical background [0003] Microalgae are an emerging oil source, especially because microalgae are rich in large amounts of polyunsaturated fatty acids and therefore have higher nutritional value. More typical is the well-known "fish oil" or "algae oil". In fact, the so-called "algae oil" on the market refers to DHA products produced by fermentation technology. In comparison, there are more abundant and balanced nutrients in natural microalgae oil. Microalgae can directly synthesize a variety of biologically active substances through primary metabolism, such as proteins, fatty acids, vitamins and pigments, and can also produce a variety of secondary metabolites. These compounds have anti-fungal, anti-viral, and anti-enzymatic properties. Many compounds, such as oleic acid, li...

Claims

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Application Information

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IPC IPC(8): C11B1/04C11B1/10C11B3/00C11B3/10C11B3/12
CPCC11B1/04C11B1/10C11B1/108C11B3/001C11B3/10C11B3/12
Inventor 薛松曹旭鹏陆洪斌姜君鹏
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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