RU2539955C2 - Pumpkin puree sterilisation method - Google Patents

Abstract

FIELD: food industry.

SUBSTANCE: invention relates to the preservation industry, in particular, to methods for sterilisation of "Pumpkin puree" preserves in jars 1-58-200. The method involves four-stage heating of preserves in 80°C, 100°C water and a 120°C and 140°C calcium chloride solution during 5, 5, 5 and 20 minutes, respectively, with four-stage cooling in the 120°C calcium chloride solution and 100°C, 80°C and 60-40°C water during 5, 7, 8, and 10 minutes, respectively, without counter-pressure.

EFFECT: method ensures the process duration reduction, quality improvement and saving of thermal energy, electric energy and water.

1 ex

Description

The invention relates to the canning industry, and in particular to methods of sterilizing canned food "Pumpkin puree" in banks 1-58-200.

Sources from which the search was carried out for this method showed that its prototype is the method [1], the essence of which is that the cans with the product are sterilized in an autoclave according to the mode:

$$\frac{25-40-25}{120}\cdot 176÷196\mathrm{to}P\mathrm{but},$$

where: 25 - the duration of heating the water in the autoclave to 120 ° C, min;

40 - the duration of their own sterilization, min;

25 - cooling time, min;

176-196 - back pressure in the autoclave, kPa.

The main disadvantages of this method are:

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

- high consumption of heat energy and water, due to the fact that for each batch of canned food after sterilization, the water in the autoclave is cooled to 40 ° C, then for a new batch it is again heated to 120 ° C;

- the need to create backpressure in the apparatus during the heat treatment, which requires additional energy consumption.

The technical result of the proposed method is aimed at reducing the duration of the process, improving the quality of the finished product, saving heat energy, electricity and water.

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 is subjected to stepwise heat treatment in water and a solution of calcium chloride without backpressure according to the regime:

$$\frac{5}{80°C}\cdot \frac{5}{\mathrm{one\; hundred}°C}\cdot \frac{5}{120°C}\cdot \frac{\mathrm{twenty}}{140°C}\cdot \frac{5}{120°C}\cdot \frac{7}{\mathrm{one\; hundred}°C}\cdot \frac{8}{80°C}\cdot \frac{10}{60-40°C},$$

where: 5 - the duration of the heating period of canned food at a water temperature of 80 ° C, min;

5 - the duration of the heating period of canned food at a water temperature of 100 ° C, min;

5 - the duration of the heating period of canned food in a solution of calcium chloride at a solution temperature of 120 ° C, min;

20 - the duration of the heating period of canned food in a solution of calcium chloride at a solution temperature of 140 ° C, min;

5 - the duration of the cooling period of canned food in a solution of calcium chloride at a solution temperature of 120 ° C, min;

7 - the duration of the cooling period of canned food at a water temperature of 100 ° C, min;

8 - the duration of the cooling period of canned food at a water temperature of 80 ° C, min;

10 - the duration of the cooling period of canned food at a water temperature of 60-40 ° C, min.

An example implementation of the method.

Cans with canned goods after sealing are installed in a carrier that provides mechanical tightness (preventing caps from tearing off during heat treatment) and placed in an autoclave (bath) with hot water at a temperature of 80 ° C for 5 min. After 5 minutes, the carrier with the jars is transferred to another autoclave (bath) with water at a temperature of 100 ° C for 5 min, followed by transfer to an autoclave (bath) with a solution of calcium chloride at a temperature of 120 ° C for 5 min. Then, the cans are sterilized in a solution of calcium chloride at a temperature of 140 ° C for 20 minutes. After this time, the cans are cooled in an autoclave (bath) with a solution of calcium chloride at a temperature of 120 ° C for 5 minutes, followed by continued cooling in another autoclave (bath) with water at a temperature of 100 ° C for 7 minutes, then cooling is continued in the next autoclave (bath) with water at a temperature of 80 ° C for 8 min with further transfer to a subsequent autoclave (bath) for final cooling at a water temperature of 60-40 ° C for 10 min.

Salient features of the proposed method are: four-stage heating of canned food in water at temperatures of 80, 100 and a solution of calcium chloride at temperatures of 120 and 140 ° C, respectively, 5, 5, 5 and 20 minutes, followed by four-stage cooling in a solution of calcium chloride at a temperature of 120 ° C and in water temperatures of 100, 80 and 60-40 ° C for 5, 7, 8 and 10 minutes, respectively, and the heat treatment is carried out without back pressure.

This mode provides a reduction in duration, quality improvement and saving of thermal energy and water.

In addition, to implement the proposed method does not require sophisticated technological equipment.

Literature

1. A collection of technological instructions for the production of canned food. V.2, M .: Food industry, 1977.

Claims (1)

A method of sterilizing pumpkin puree, characterized in that after seaming, the cans are installed in a carrier providing mechanical tightness of the cans and subjected to stepwise heat treatment in water and a solution of calcium chloride without backpressure according to the mode
$$\frac{5}{80°C}\cdot \frac{5}{\mathrm{one\; hundred}°C}\cdot \frac{5}{120°C}\cdot \frac{\mathrm{twenty}}{140°C}\cdot \frac{5}{120°C}\cdot \frac{7}{\mathrm{one\; hundred}°C}\cdot \frac{8}{80°C}\cdot \frac{10}{60-40°C},$$

where: 5 - the duration of the heating period of canned food at a water temperature of 80 ° C, min;
5 - the duration of the heating period of canned food at a water temperature of 100 ° C, min;
5 - the duration of the heating period of canned food in a solution of calcium chloride at a solution temperature of 120 ° C, min;
20 - the duration of the heating period of canned food in a solution of calcium chloride at a solution temperature of 140 ° C, min;
5 - the duration of the cooling period of canned food in a solution of calcium chloride at a solution temperature of 120 ° C, min;
7 - the duration of the cooling period of canned food at a water temperature of 100 ° C, min;
8 - the duration of the cooling period of canned food at a water temperature of 80 ° C, min;
10 - the duration of the cooling period of canned food at a water temperature of 60-40 ° C, min.