RU2512276C1 - Jam sterilisation method - Google Patents

Abstract

FIELD: food industry.

SUBSTANCE: invention is related to preservation industry. The jam sterilisation method envisages three-stage heating of the preserves in 60, 80 and 100°C water for 5, 5 and 10 minutes respectively with subsequent three-stage cooling in water during 5, 5 and 5 minutes. Heating and cooling are performed at a water temperature equal to 60 and 80°C in the same baths. During the whole heat treatment process the jars are turned upside down with a frequency equal to 0.133 s^-1.

EFFECT: method ensures saving heat energy and water, the process duration reduction and the ready product quality enhancement.

1 ex

Description

The proposed method of the invention relates to the canning industry, and in particular to methods of sterilization of jam in banks 1-82-500.

Sources that were searched by this method showed that the prototype of the proposed method is a method of sterilizing jam in an autoclave [1] according to the mode

$$\frac{\mathrm{twenty}-\mathrm{fifteen}-\mathrm{twenty}}{{\mathrm{one\; hundred}}^{o}C}\cdot 118\mathrm{to}P\mathrm{but}$$

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

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

20 - the duration of the cooling period, min;

100 ° С - sterilization temperature, ° С;

118 - back pressure in the autoclave, kPa.

The main disadvantages of this method are:

- long duration of the process of heat treatment of the product;

- uneven heat treatment of the product in banks;

- high consumption of thermal energy and water.

The technical result of the invention is aimed at creating a method for the production of canned food, contributing to: reducing the duration of the process; preservation of biologically active components of the raw materials used; simplifying the process of implementing the method and apparatus design for its implementation, saving heat energy and water, as well as reducing costs and increasing the competitiveness of finished products.

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 5 minutes, followed by transfer to the second and third baths with water, respectively 80 ° C for 5 min and 100 ° C for 10 min, followed by cooling in the second and first baths with water at 80 and 60 ° C for 5 and 5 min, respectively, and continued cooling in the fourth anne at a water temperature of 40 ° C for 5 min, while during the entire process of heat treatment, the cans rotate from the bottom to the lid with a frequency of 0.133 s ^-1 .

An example implementation of the method.

Cans with jam after sealing are installed in a carrier that provides mechanical tightness (preventing caps from breaking off during heat treatment) and placed in a hot water bath at 60 ° C for 5 minutes. After 5 minutes, the carrier with the cans is transferred to a bath with water at a temperature of 80 ° C for 5 minutes, then to a bath with water at a temperature of 100 ° C for 10 minutes. After this time, the cans are cooled in the same baths: in the second one at a water temperature of 80 ° C for 5 minutes and in the first bath at a water temperature of 60 ° C for 5 minutes, in which the next batch of cans is heated simultaneously, with further cooling in the fourth bath at a water temperature of 40 ° C for 5 min, while during the entire process of heat treatment, the cans rotate from the bottom to the lid with a frequency of 0.133 s ^-1 .

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, for 5, 5 and 10 minutes, followed by three-stage cooling for 5, 5 and 5 minutes, and the processes of heating and cooling cans except for the last stages of heating and cooling, they are carried out simultaneously in the same bathtubs, and during the whole process of heat treatment, the cans rotate from the bottom to the lid with a frequency of 0.133 s ^-1 .

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 sterilization of jam, characterized in that after seaming, the cans are installed in a carrier that provides 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 5, 5 and 10 minutes, respectively, of some cans and cooling of the other in the same bathtubs with water at temperatures of 80 and 60 ° C for 5 and 5 min, with continued cooling in another bath at a water temperature of 40 ° C for 5 min, while during the entire heat treatment process, the cans rotate from the bottom to the lid with pilots at 0,133 s ^-1.