Tomato pomace seed and skin separating method and separating system

Abstract

The invention provides a tomato pomace seed and skin separating method. The method comprises the following steps that firstly, tomato pomace is squeezed and dried through direct flow hot air to obtaina material with the water mass percent being 25 to 40%; secondly, the material is separated through a dual-layer disc screen into tomato seeds, tomato skin and tomato crumbles, the tomato skin and the tomato crumbles are used for lycopene extraction, the tomato seeds enter a plane rotary screen, the tomato crumbles and the tomato broken skin in the tomato seeds are removed, output tomato seeds enter a disc dryer to be dried, the water is reduced to 6 to 9%, after drying, the tomato seeds enter a color selector to remove heterochrosis impurities and bad seeds, pure uniform-color tomato seeds can be obtained, meanwhile, the temperature of the tomato seeds is reduced to be within 38 DEG C, and direct packaging is carried out. According to the method, water of the tomato skin and water of thetomato seeds are controlled, the tomato skin and the tomato seeds are separated and used, due to two-time drying, drying energy consumption is reduced, due to combination of three separation devices,product quality and treatment efficiency are improved, cost is greatly reduced, and continuous industrial production is easily achieved.

Description

technical field [0001] The invention belongs to the technical field of raw material processing of natural extracts, and in particular relates to a method and a separation system for separating tomato skin dregs and seed skins. Background technique [0002] Lycopene is well-known for its superior antioxidant function. It is made into soft capsules, microcapsules, oil-soluble suspensions, tablets, powders, injections and other products in various forms and specifications. It is used in the medical and health care markets. Over the years, it has been unanimously favored by the domestic and foreign health care product markets. [0003] Extracting lycopene from tomato pulp, a by-product of tomato paste factory, has obvious cost advantages. In tomato peel, only tomato peel and a small amount of tomato paste contain a large amount of lycopene, and tomato seeds do not contain it. , tomato seeds account for more than 10%. If the tomato seeds cannot be separated, it will cause a seri...

AI Technical Summary

Problems solved by technology

[0003] Extracting lycopene from tomato pulp, a by-product of tomato paste factory, has obvious cost advantages. In tomato peel, only tomato peel and a small amount of tomato paste contain a large amount of lycopene, and tomato seeds do not contain it. , tomato seeds account for more than 10%. If the tomato seeds cannot be separated, it will cause a series of problems such as difficult crystallization of the extracted lycopene oleoresin and low crystallization yield. The traditional separation method of tomato skin dregs is separated by adding water, which consumes a lot of water A large amount of sewage will be generated and the area will be large, and the treatment capacity cannot meet the requirements of large-scale production. Therefore, a dry tomato peel and residue separation method with large processing capacity and good separation effect between tomato peel and tomato seeds must be designed specifically for tomato peel and residue.

[0004] In the patent with the publication number CN101779775A, the tomato peels are squeezed, dried downstream, kneaded, and then separated by air flow. However, the composition of the tomato peels is complicated, and there are small sauce balls after drying, which are similar to the specific gravity of tomato seeds. The air flow separation cannot be separated very well. On the other hand, this method cannot control the moisture content of tomato skin and tomato seeds separately. Drying the tomato skin until the tomato seeds can be filled will result in a large amount of lycopene in the tomato skin. Loss, not conducive to the maximum utilization of raw materials

In the patent with the publication number CN201310355594A, the tomato skin residue is squeezed to 22%-25% moisture, and then dried to 12%-15% moisture dry material, and the skin and seeds are separated by impacting the dry material in a centrifuge. Reducing the moisture content of slag to 22%-25% by physical pressing alone cannot be achieved in large-scale industrial production. Secondly, the use of centrifuge impact separation requires a large investment in equipment, small processing capacity, and high power consumption, which is not suitable for large-scale industrial production.

[0005] In conclusion, the current dry tomato peel separation method has various shortcomings and cannot meet the needs of large-scale industrial production.

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