RU2616815C2 - Home-made tomatoes production method - Google Patents

Abstract

FIELD: food industry.

SUBSTANCE: method for sterilizing homemade tomatoes includes a three-stage heating of tin cans in baths with water at temperatures of 60, 80 and 100°C for respectively 8, 8 and 28 minutes followed by a three-stage cooling in baths with water at temperatures of 80, 60 and 40°C for 8, 8 and 5 minutes. Heating and cooling are performed at the water temperatures equal to 60 and 80°C in the same baths.

EFFECT: process duration reduction and the finished product quality enhancement.

1 ex

Description

The invention relates to the canning industry, it can be used for sterilization of slightly acidic pickles from tomatoes in banks 1-82-2000.

Sources that were searched by this method showed that the prototype of the proposed method is a method of sterilizing canned food "Home Tomatoes" in an autoclave [1] according to the mode:

where: 20 - the duration of the period of heating water to 100 ° C, min;

25 - the length of the period of its own sterilization at 100 ° C, min;

20 - the duration of the cooling period, min;

100 - sterilization temperature, ° C;

147-167 - back pressure in the autoclave, kPa.

The disadvantages of this method are:

- long duration of the process;

- uneven heat treatment of the product;

- high consumption of thermal energy and water;

- the frequency of the technological cycle.

The specified technical result is achieved due to the fact that the cans after seaming are installed in a special carrier that provides mechanical tightness of the cans and are pre-heated in the first bath with water at a temperature of 60 ° C for 8 min, followed by transfer to the second and third baths with water with a temperature of 80 ° C, respectively, for 8 minutes and 100 ° C for 28 minutes, followed by cooling in the second and first baths with water at temperatures of 80 and 60 ° C for 8 and 8 minutes, respectively, and continued cooling in the fourth nne at a water temperature of 40 ° C for 5 min.

An example of the method

After sealing, the cans with canned goods are installed in a carrier that provides mechanical tightness (preventing caps from tearing off during the heat treatment) and placed in a hot water bath with a temperature of 60 ° C for 8 min. After 8 minutes, the carrier with the cans is transferred to a bath of water at a temperature of 80 ° C for 8 minutes, then to a bath of water at a temperature of 100 ° C for 28 minutes. After this time, the cans are cooled in the same baths: in the second bath at a water temperature of 80 ° C for 8 min and in the first bath for 8 min at a water temperature of 60 ° C, in which the next batch of cans is simultaneously heated, with further continued cooling in the fourth bath at a water temperature of 40 ° C for 5 minutes

The use of stepwise cooling of canned food in the same baths where heating is also carried out, simplifies the heat treatment process and the design of the sterilization apparatus, provides significant savings in heat energy and water, since with this design of heat treatment, canned food is heated in the first and second baths the heat given off by banks cooled in the same baths that have already undergone heat treatment. And water for cooling is consumed only in the last bath.

Salient features of the proposed method are: three-stage heating of canned food in water at temperatures of 60, 80 and 100 ° C, respectively, 8, 8 and 28 minutes, followed by three-stage cooling for 8, 8 and 5 minutes, while the processes of heating and cooling the cans, except the last stages of heating and cooling are carried out simultaneously in the same bathtubs.

This mode provides significant savings in thermal energy, water, reducing the process time and thereby improving the quality of the finished product.

Literature

1. A collection of technological instructions for the production of canned food. T-2, M., 1977

Claims (1)

A method of sterilizing homemade tomatoes, characterized in that after seaming, the cans are installed in a carrier providing mechanical tightness of the cans, and at the same time stepwise heating is carried out in bathtubs with water at temperatures of 60, 80 and 100 ° C for 8, 8 and 28 minutes, respectively, of some cans and cooling others in the same bathtubs with water at temperatures of 80 and 60 ° C for 8 and 8 minutes, with continued cooling in another bath at a water temperature of 40 ° C for 5 minutes.