Choose fresh tomatoes with a solid content of more than 4.0% as raw materials, and the tomato maturity must reach more than 90%. The solid content of tomato is less than 4.0%, which is not conducive to the concentration and processing of tomato paste. More steam is needed to evaporate the water in fresh tomatoes, which increases the processing cost of tomato paste.
Crushing means that it is heated quickly and evenly during pre-cooking, and de-seeding is to prevent the seeds from being broken during beating, and if mixed into the pulp, it will affect the flavor, texture and taste of the product. On the other hand, crushed tomatoes can not only improve the smoothness of the feed, but also improve the juice yield of the tomato pulp.
Preheating to quickly heat the tomato puree after crushing and deseeding to 85°C~90°C to inhibit the activity of pectin lipase and abundant lacturonidase, so as to prevent the pectin substance from depreciating and denaturing, and reducing the viscosity of the sauce. degree and spreadability.
The concentrated sauce body must be heated to 90℃~95℃ and then canned. The containers include tinplate cans, toothpaste-shaped plastic bags, glass bottles, and existing plastic cups or toothpaste-shaped plastic tubes, which are packaged with tomato sauce as a seasoning. Vent sealed immediately after canning.