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Method for extracting pupa oil from silkworm pupa by using ultrasonic wave

A technology of silkworm chrysalis oil and ultrasound, which is applied in the direction of fat oil/fat production, fat oil/fat refining, fat production, etc., can solve the problems of low extraction rate, short extraction time, and high industrial production cost, and achieve simple process steps and short extraction time Short, low-cost production effects

Inactive Publication Date: 2010-07-21
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Regarding the extraction of silkworm chrysalis oil, the organic solvent extraction method has low cost and low energy consumption, but has the disadvantages of long extraction time and low extraction rate; supercritical carbon dioxide extraction method has high extraction rate and short extraction time, but requires high equipment and consumes a lot of energy. Large energy, and easy to cause pipeline blockage during extraction, high industrial production costs, and many problems in the process; ultrasonic-assisted extraction has not been reported in the extraction of silkworm chrysalis oil, and ultrasonic waves can strengthen the mass transfer rate and effect of the extraction and separation process , which facilitates the extraction of oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Taking silkworm chrysalis powder 100g as the raw material used to extract silkworm chrysalis oil as an example, other raw materials used and their extraction methods are as follows:

[0022] 1. Silkworm chrysalis pretreatment

[0023] Take the silkworm chrysalis and put them into a blast drying box, dry them at 80-120°C until their water content is 6%-10%, pulverize them into powder with a pulverizer, and pass through a 30-80 mesh sieve.

[0024] 2. Ultrasonic extraction

[0025] Silkworm chrysalis powder 100g is packed in the container, add 400g n-hexane extraction solvent, the mass ratio of silkworm chrysalis powder and extraction solvent is 1: 4, be warming up to 40 ℃, be 120W ultrasonic treatment 30 minutes with ultrasonic generator power, collect extract.

[0026] 3. Preparation of silkworm chrysalis oil

[0027] The extract is filtered with 3-5 layers of 100-250 mesh gauze, the filtrate is collected, centrifuged with a centrifuge at 1500-4000 rpm for 10-30 minut...

Embodiment 2

[0031] Taking silkworm chrysalis powder 100g as the raw material used to extract silkworm chrysalis oil as an example, other raw materials used and their extraction methods are as follows:

[0032] In ultrasonic extraction step 2, 100 g of silkworm chrysalis powder is put into a container, and 300 g of n-hexane extraction solvent is added, and the mass ratio of silkworm chrysalis powder to extraction solvent is 1:3. The other steps of this step are the same as in Example 1, and silkworm chrysalis oil is prepared. . In refining step 4, the prepared silkworm chrysalis oil was heated to 70° C., adding phosphoric acid accounting for 0.05% of the mass of silkworm chrysalis oil, stirred and mixed, kept for 5 minutes, and degummed. The other steps of this step were the same as in Example 1. Other steps are the same as in Example 1, and refined silkworm chrysalis oil is prepared.

Embodiment 3

[0034] Taking silkworm chrysalis powder 100g as the raw material used to extract silkworm chrysalis oil as an example, other raw materials used and their extraction methods are as follows:

[0035] In ultrasonic extraction step 2, 100 g of silkworm chrysalis powder is put into a container, and 600 g of n-hexane extraction solvent is added, and the mass ratio of silkworm chrysalis powder to extraction solvent is 1:6. The other steps of this step are the same as in Example 1, and silkworm chrysalis oil is prepared. . In refining step 4, the prepared silkworm chrysalis oil was heated to 70° C., adding phosphoric acid accounting for 0.12% of the mass of silkworm chrysalis oil, stirred and mixed, kept for 5 minutes, and degummed. The other steps of this step were the same as in Example 1. Other steps are the same as in Example 1, and refined silkworm chrysalis oil is prepared.

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Abstract

The invention relates to a method for extracting pupa oil from silkworm pupas by using ultrasonic wave. The method is formed by silkworm pupa pretreatment, ultrasonic extraction, pupa oil preparation and refining. Compared with solvent extraction method, since the ultrasonic extraction is adopted, the extraction duration is shortened to 30 minutes from 2 hours, the extract rate is improved to 96.3 percent from 81.1 percent and the product yield is improved to 28.9 percent from 24.3 percent. According to the detection of the pupa oil prepared through the method of the invention, all indexes satisfy the pupa oil quality standard reported in literature and the GB15306-2004 rapeseed oil quality standard, and the pupa oil can be used as both edible oil and healthcare food ingredients. The invention has the advantages of simple technological steps, high extraction rate, short extraction duration, low production cost and the like, and can be used for pupa oil preparation from silkworm pupas.

Description

technical field [0001] The invention belongs to the technical field of food processing, and in particular relates to a method for extracting silkworm chrysalis oil by ultrasonic waves using silkworm chrysalis as a raw material. Background technique [0002] Natural oils widely exist in animals and plants, such as tallow, lard, suet, etc. contained in animals, and perilla oil, linseed oil, evening primrose oil, etc. contained in plants. Oil is not only one of the main substances that human beings rely on for survival, but also an important industrial raw material, which has a wide range of uses in food, medicine, cosmetics, leather industry and other technical fields. Now, the world's annual per capita oil consumption is more than 11 kilograms, while my country only has 3.1 kilograms, which is one of the countries with the lowest oil consumption. my country's oil resources are seriously insufficient. The import volume of the three major domestic edible oils, soybean oil, pal...

Claims

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Application Information

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IPC IPC(8): C11B1/10C11B1/00C11B3/10C11B3/06C11B3/04
Inventor 李建科吴晓霞张研宇赵艳红
Owner SHAANXI NORMAL UNIV
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