Method for preparing degreased insect powder and insect oil from hermetia illucens

Abstract

The invention discloses a method for preparing degreased insect powder and insect oil by using hermetia illucens, which comprises the following steps: 1) cleaning: after fresh hermetia illucens are harvested, cleaning attached insect powder and impurities by using an insect washing machine; (2) cooking: putting the cleaned hermetia illucens in the step (1) into a cooking pot, and cooking for 20-40 minutes at the temperature of 90-100 DEG C; (3) squeezing: discharging water from the cooked hermetia illucens in the step (2) through spiral lifting, draining, conveying to a wall-breaking squeezing system, and squeezing, so as to obtain a hermetia illucens pulp mixture and solid residue hermetia illucens skin; (4) drying the solid residue insect skin obtained in the step (3) to obtain insect skin powder; meanwhile, conveying the insect pulp mixture obtained in the third step to a three-phase centrifugal machine to be subjected to oil, water and residue separation, then obtaining waste water, insect oil and insect pulp, and drying the insect pulp to prepare insect pulp powder. According to the method, operability of logistics and storage is achieved, and economic benefits are high.

Description

technical field [0001] The invention relates to the technical field of black soldier fly processing, and more specifically relates to a method for preparing defatted insect powder and insect oil by utilizing black soldier fly. Background technique [0002] China is a country that imports protein for food preservation. The main source of animal protein in feed is fishmeal. China imports 1.5 million tons of fishmeal every year, and 1.75 million tons of fresh black soldier fly worms can be bred by using China's rich food waste resources. The final sales of black soldier flies are B2B and B2C. At present, the black soldier flies are mainly sold in the B2C market, that is, they are directly used by farmers. The characteristics are affected by the radius of the (fresh worm) transportation area, and The impact of the low and high seasons of breeding is not big or long. From the export market of black soldier flies investigated by the customs in recent years, the data analysis is a...

AI Technical Summary

Problems solved by technology

[0003] 1. The processing cost of whole worms is relatively high. The cost of microwave drying whole worms is more than 2,000 yuan per ton of dry worms, and the value of tunnel microwave drying equipment for processing 180kg of fresh worms per hour is 500,000 yuan;

[0004] 2. The transportation cost of whole worms is high, and the bulk density of puffed whole worms dried by microwave is only 120kg / m 3 , which means that a 40ft standard container can only ship 5-6 tons, and the door-to-door US freight costs 5,000-6,000 US dollars;

[0005] 3. In terms of post-feeding processing, microwave-dried puffed whole worms are rich in nearly 30% oil. If powdered in the later stage, it will be very sticky; good control;

[0006] 4. The warranty period of whole worms is short, and the puffed whole worms dried by microwave are rich in nearly 30% oil, which is very easy to oxidize and deteriorate

[0007] It can be seen that the sale of fresh worms is an unscientific B2C feed market, and there are huge challenges in preservation and logistics; direct drying technology is very difficult to process thoroughly due to the protection of fresh worm skins; It solves the problem of water distribution in the fresh worm skin, but the electricity consumption is high, the transportation is not economical because of the light density, and it still does not degrease well

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