Tomato deep-processing method

Abstract

The invention provides a method for deep processing and comprehensively utilizing tomatoes. The tomato peel is used for extracting lycopene and / or used as a feed additive; the tomato seed is used for preparing tomato seed oil and / or used as a feed additive; the tomato juice containing pulp is separated to obtain clear juice and wet pomace; the clear juice can be prepared into concentrated clear tomato juice or soluble solid powder; the wet pomace is used for extracting lycopene after removing water and alcohol-soluble substances with low-carbon alcohol; and the pomace after the extraction of lycopene is used for producing tomato fiber. During the lycopene extracting process, the third time of leaching uses pure solvent, the second time of leaching uses the leaching solution in the third time of leaching, and the first time of leaching uses the leaching solution in the second time of leaching, and the leaching solution obtained in the first time of leaching is frozen to separate out lycopene crystal with purity of above 80% after recrystallization. The inventive method has advantages of effective resource utilization, low production cost, and applicability for large scale production.

Description

technical field [0001] The invention relates to deep processing of tomatoes and comprehensive utilization of resources, especially the comprehensive utilization of tomato skin and seeds and the production of lycopene, concentrated tomato clear juice and tomato fiber. Background technique [0002] Tomatoes contain a variety of nutrients and biologically active substances necessary for the human body. They have become one of people's favorite fruits and vegetables, and they are also important raw materials for the food industry. In addition to being eaten directly as a vegetable and fruit, tomatoes can also be made into canned tomatoes, tomato paste, tomato sauce and tomato juice. According to literature reports, the red pigment in tomato is mainly lycopene, which is a carotenoid with strong antioxidant and coloring properties, and can be used in industries such as medicine and health products, cosmetics and food additives; tomato fiber It has excellent water holding capacity...

AI Technical Summary

Problems solved by technology

CN1297699 discloses "a comprehensive utilization process for extracting multiple effective components of tomato". In the disclosed method, the tomato is soaked in 50°C hot water to remove the skin, and the fruit core is taken out with a cylindrical knife to obtain the fruit core and pulp respectively, and then separately Processes such as beating, filtering, alcohol extraction and / or concentration under reduced pressure, freeze-drying, etc., although a variety of tomato products can be obtained, it is difficult to realize in large-scale industrial production; CN1463623 discloses "a kind of deep processing of tomato products Preparation method", in the disclosed method, the tomato flavor extracted with organic low-carbon alcohol and ketone is directly used in the deployment of tomato beverage or cold drink, and it is difficult to fully maintain the original flavor of tomato; CN1226389 discloses "tomato clear juice and its production process ", use flocculation extraction separation agent to separate impurities such as pectin, protein, pulp particles in the protoplasm in the disclosed method, but undisclosed used flocculation extraction separation agent name, consumption and residual amount in the final product; CN1298904 discloses " tomato The method for preparing crystallized lycopene and / or lycopene oleoresin from lycopene”, the disclosed method uses tomato paste as the main raw material, although it can prolong the production period of lycopene compared with using fresh tomatoes as raw material, but the cost is relatively high High; CN1405234 discloses " the method for preparing high-purity lycopene by chromatography ", adopts the mixed solvent of halogenated hydrocarbon and normal alkane as mobile phase, macromolecular resin as the preparative liquid chromatography of stationary phase in the disclosed method Separation and purification of lycopene will inevitably leave a small amount of residue in the final product; US5837311 discloses "INDUSTRIAL PROCESSING OF TOMATOES AND PRODUCT THEREOF", in which the separated pomace is directly extracted with an organic solvent, and after recycling the organic solvent Obtain lycopene oleoresin, which contains resin, phospholipids, glycerides, etc., and the content of lycopene is 2-10%; US6797303 discloses "CAROTENOID EXTRACTION PROCESS", in which tomato, wolfberry, carrot, etc. are used Carotenoids are extracted as raw materials, among which, the extraction of lycopene is to use the sauce residue obtained by separating tomato paste with water as raw material, and then extract it with an organic solvent, and recover the solvent under reduced pressure to obtain lycopene resin. 5-6%

[0004] The above-mentioned literatures provide technologies worthy of reference for the deep processing and comprehensive utilization of tomatoes, but in the published literatures, some have certain difficulties in large-scale industrial production, some products contain more resinous substances, and some higher production costs