CN101880590A - Application of Chrysocephala maggot as oil-bearing insect - Google Patents

Abstract

The invention belongs to the fields of food or bioenergy and develops a new oil source, i.e. Chrysomya megacephala larvae as oil insects. Oil can be obtained by drying aged and mature Chrysomya megacephala larvae with hot blast or microwave and then carrying out a squeezing method (i.e. delivering the Chrysomya megacephala larvae into a screw-type press when the Chrysomya megacephala larvae is hot so as to squeeze oil out). The oil can be used as raw material oil for food, chemical industry and biodiesel. The oil content of the Chrysomya megacephala larvae is 20-21 percent, and the oil extracted from the Chrysomya megacephala larvae is proved to contain various unsaturated fatty acid needed by human bodies based on nutrition constituent analysis and is high-quality healthy oil; the Chrysomya megacephala larvae have short growth cycle which is only 4-5 days and can be cultivated under high density conditions with extremely small occupied area and yearly-rate oil production higher than 20t/acre per year in each acre of land; and the production can be carried out in an industrial factory building without occupying cultivated land area; and the oil contains no toxin and is safe and reliable with simple extraction process.

Description

Application of Chrysocephala maggot as oil-bearing insect

technical field

The invention belongs to the field of food or bio-energy, and in particular relates to a new oil source—oil insects.

Background technique

At present, the world's three major oil crops are rapeseed, soybean and peanut. These three types of crops are rich in oil content, especially rapeseed and peanut, the oil content reaches 40-50%. However, these three major oil crops have been difficult to meet the growing population's demand for oil, mainly because of their long growth cycle, such as spring dawn rape growth cycle 60-130 days, winter small rape 130-290 days, soybean 90 days -140 days; at the same time, these crops occupy a large area of cultivated land, and the planting process is easily disturbed by weather and various pests and diseases. 34 kg/mu·year, peanut 80-90 kg/mu·year, in today's scarcity of arable land, this will undoubtedly increase the burden on land resources; in addition, because these oil crops themselves contain certain toxins, such as rapeseed contains sulfur Glucoside (mustard toxin), soybeans contain antitrypsin and thrombin, peanuts are prone to moisture and mildew, and are prone to produce aflatoxins with strong carcinogenicity. When used as edible oil, they need to be treated in multiple stages, otherwise the safety will be compromised. If there is no guarantee, this also increases the requirements for processing technology to a certain extent, and the production cost is relatively high.

Although all countries are currently devoting themselves to the development of new oil crops. For example, my country is studying the use of woody plants that can grow recyclably as oil crops. However, this also requires a large amount of land resources, and has low production efficiency, high cost, and difficulty in collection. The low quality of oil and the difficulty of removing phytotoxins all restrict the practical application of research results in this field.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies of the prior art and provide a new oil raw material with low production requirements, high oil yield and safe nutrition.

The present invention realizes above-mentioned object through following technical scheme:

The invention provides a new idea in the field of oil plants—using the golden fly maggot as an oil plant insect and becoming a new source of oil plants.

As a kind of insect with high protein content, golden fly maggot has a crude protein content of more than 60% and is rich in nutrition. It has been accepted by the feed industry at present. And the present invention uses it as a kind of oil plant source for the first time, with 4～5 day old golden fly maggots, obtain oil after drying, pressing. The oil can be used as raw material oil for food, chemical industry and biodiesel.

The oil content of golden fly maggot is 20-21%, and the oil plant extracted therefrom, through nutritional analysis, it contains a variety of unsaturated fatty acids required by the human body, and is a high-quality healthy oil plant. Although its oil content is not as high as that of rapeseed and peanuts, the growth cycle of Chrysalis maggots is short, only 4 to 5 days, and the occupied area is very small. It can be cultivated under high-density conditions, and the annual oil production per mu can reach 20t /mu·year, and can be carried out in industrial plants without occupying the area of cultivated land.

Moreover, unlike most oil crops, Chrysocephala maggot itself does not contain toxins, and the oil obtained after extraction has zero toxin content, the extraction process is simple, and the obtained oil is safe and reliable, which is very suitable as edible oil. Because the original form of maggots is eliminated through processing, as a kind of oil, the edible oil is also easily accepted by the public, and with the improvement of scientific cognition, the edible oil will become more and more popular.

Compared with the prior art, the present invention has the following beneficial effects:

1. The present invention provides a new oil-bearing insect, the annual oil yield per mu is much higher than that of existing oil-bearing crops, which can alleviate the pressure of insufficient cultivated land resources.

2. The new oil insects provided by the present invention not only do not contain toxins, but also have very high nutritional value, and the obtained oil is very suitable as a healthy edible oil.

3. The new oil-bearing insects provided by the present invention have a simple process for extracting oil and fat, further reducing production costs.

Detailed ways

The technical solution of the present invention is further illustrated below through specific examples.

Example 1

Collect 4-5 day-old mature golden fly maggots, dry them with an industrial microwave oven, and send them to a screw press by a screw conveyor belt while they are hot to squeeze out the oil. The extruded amount of grease is 10% or more. Among them, the content of unsaturated fatty acid is about 68%, the content of saturated fatty acid is about 25%, the content of oleic acid is 23-24%, the content of linoleic acid is 10-11%, the content of palmitic acid is 16-18%, and the content of palmitoleic acid is 17-10%. 19%.

Claims (5)

1. The application of Chrysalis macrocephala as oil insects. 2. The application according to claim 1, characterized in that the age of the described Chrysalis macrocephala is 4 to 5 days. 3. application as claimed in claim 1, is characterized in that golden fly maggot obtains described oil plant after drying, squeezing. 4. application as claimed in claim 1 is characterized in that described oil plant is edible, chemical industry or the raw material oil of biodiesel. 5. A kind of edible oil is characterized in that containing the fat that extracts from Chrysalis macrocephala.