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Supercritical CO2 extraction technology of silkworm chrysalis oil

A silkworm chrysalis oil, supercritical technology, applied in the direction of fat oil/fat production, fat production, etc., can solve the problems of cumbersome process, solvent environmental pollution, low yield, etc., achieve simple production process, improve oil yield and oil yield high effect

Inactive Publication Date: 2013-12-11
SUZHOU SANHE KAITAI COLORED THREAD WEAVING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Silkworm chrysalis oil extraction methods generally include pressing method and solvent leaching method. The pressing method has low yield, cumbersome process, and unsatisfactory product color; the solvent leaching method has the disadvantages of long extraction time and low extraction rate, and the solvent will cause environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: Put the silkworm chrysalis in a blast drying oven, heat up to 90-100°C and dry until the water content of the silkworm chrysalis is 6%, grind it into silkworm chrysalis powder with a pulverizer, pass through a 30-40 mesh sieve; take 50g and sieve it The silkworm chrysalis powder was put into the extractor for supercritical CO 2 Extraction, CO 2 When the flow rate is 25kg / h, the pressure of the extractor is 25Mpa, and the temperature is 40°C, the extraction time is 2h; 2 Enter the separator, the pressure of the separator is 5Mpa, and the separation temperature is 40°C. The crude silkworm chrysalis oil is collected at the outlet of the separator; Stand at -30°C for 24 hours, and filter to obtain 13.9 g of refined silkworm chrysalis oil, with an oil yield of 27.8%.

[0014] Calculation of oil yield (%) = oil yield / dried silkworm chrysalis powder × 100%.

Embodiment 2

[0015] Embodiment 2: Put the silkworm chrysalis in the blast drying box, heat up to 85-95°C and dry until the water content of the silkworm chrysalis is 7%, grind it into silkworm chrysalis powder with a pulverizer, pass through a 40-50 mesh sieve; take 50g and sieve it The silkworm chrysalis powder was put into the extractor for supercritical CO 2 Extraction, CO 2 When the flow rate is 20kg / h, the pressure of the extractor is 28Mpa, and the temperature is 45°C, the extraction time is 1.5h; the valve of the separator is opened to make the CO containing silkworm pupa oil 2 Enter the separator, the pressure of the separator is 4Mpa, and the separation temperature is 35°C. The crude silkworm chrysalis oil is collected at the outlet of the separator; Stand at -30°C for 22 hours, filter to obtain 13.1 g of refined silkworm chrysalis oil, and the oil yield is 26.2%.

Embodiment 3

[0016] Embodiment 3: Put the silkworm chrysalis into the blast drying oven, heat up to 90-100°C and dry until the water content of the silkworm chrysalis is 6%, grind it into silkworm chrysalis powder with a pulverizer, pass through a 30-40 mesh sieve; take 50g and sieve it The silkworm chrysalis powder was put into the extractor for supercritical CO 2 Extraction, while the supercritical CO in the extractor 2 Ultrasonic waves are emitted to strengthen the extraction process of silkworm chrysalis oil. The ultrasonic power is 130W, and the ultrasonic treatment time is 40 minutes. CO 2 When the flow rate is 25kg / h, the pressure of the extractor is 25Mpa, and the temperature is 40°C, the extraction time is 2h; 2 Enter the separator, the pressure of the separator is 5Mpa, and the separation temperature is 40°C. The crude silkworm chrysalis oil is collected at the outlet of the separator; Stand at -30°C for 24 hours, and filter to obtain 15.6 g of refined silkworm chrysalis oil, w...

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PUM

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Abstract

The invention discloses a supercritical CO2 extraction technology of silkworm chrysalis oil. The technology comprises the following steps: (1) silkworm chrysalis pretreatment: drying silkworm chrysalis, crushing to form silkworm chrysalis powder, and sieving by a 30-60 mesh sieve; (2) extraction: carrying out supercritical CO2 extraction of the sieved silkworm chrysalis powder in an extractor, opening a valve of a separator for the entrance of CO2 containing silkworm chrysalis oil to the separator, and collecting crude silkworm chrysalis oil at the outlet of the separator, wherein supersonic waves can be used to reinforce the silkworm chrysalis oil extraction separating process; and (3) refining: refining the crude silkworm chrysalis oil through a stationary method to obtain refined silkworm chrysalis oil. The supercritical CO2 extraction technology of the silkworm chrysalis oil has the advantages of no organic solvent pollution, simple production technology, high oil yield, and oil yield increase through the use of the supersonic waves to reinforce the silkworm chrysalis oil extraction separating process.

Description

Technical field: [0001] The invention relates to the technical field of oil extraction, in particular to a supercritical CO extraction method for silkworm chrysalis oil. 2 Extraction process. Background technique: [0002] my country is the main producer of silk, accounting for about 80% of the world. Silkworm chrysalis, as the main by-product of the silk industry, produces hundreds of thousands of tons of silkworm chrysalis every year, but its utilization rate is not high, and only a small amount is used as insect food. The content of unsaturated fatty acids in silkworm chrysalis is more than 78%, especially the content of α-linolenic acid is more than 40%, which is a rare new quality resource rich in α-linolenic acid. Because silkworm chrysalis oil is rich in a variety of unsaturated fatty acids, it has multiple functions such as increasing intelligence, protecting eyesight, and delaying aging. [0003] Silkworm chrysalis oil extraction methods generally include pressing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B1/10
Inventor 魏天堂
Owner SUZHOU SANHE KAITAI COLORED THREAD WEAVING CO LTD