RU2551010C2 - Cherry compote sterilisation method - Google Patents

Abstract

FIELD: food industry.

SUBSTANCE: invention relates to food industry, in particular, to cherry compote sterilisation method. The method involves sequential heating in a 150°C air flow at a rate of 2.75 m/s during 13 minutes, showering with a 100°C water during 10 minutes with subsequent staged cooling in baths with 80°C water during 4 minutes, with 60°C water during 4 minutes and with 40°C water during 5 minutes. During processes of heating in a heated air flow and cooling, the jar is subjected to interrupted 2-3-minutes' turning upside down with a frequency equal to 0.133 s^-1 with a 2-3 minutes' interval.

EFFECT: invention ensures the process duration reduction, cracked and peeled fruits quantity decrease, the ready product structural-and-mechanical characteristics improvement.

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Description

The proposed method for the invention relates to the canning industry, and in particular to methods for sterilizing compote from cherries in cans SKO 1-82-500.

Sources that were searched by this method showed that the prototype of the proposed method is a method for sterilizing compotes [1], the essence of which is that the rolled cans are placed in a sterilization apparatus (autoclave) and subjected to heat treatment according to the regime:

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

where 20 is the duration of heating the water in the autoclave to 100 ° C, min; 20 - the duration of their own sterilization, min; 20 - cooling time, min; 118 - back pressure in the autoclave, kPa; 100 - sterilization temperature, ° C. The total duration of the regime is 60-65 minutes.

The disadvantages of this method are:

long duration of the heat treatment process, which affects the quality of the finished product;

uneven heat treatment of different layers of the product in the bank (the temperature difference between the central and peripheral layers reaches 5-6 ° C and, accordingly, the magnitude of the sterilizing effects is not the same; the peripheral layers get excessive heat);

high consumption of thermal energy and water.

The technical result of the invention is aimed at creating a method for the production of compote, contributing to: reducing the duration of the process; preservation of biologically active components of the raw materials used; reducing the number of boiled fruits and fruits with cracked skin; improving the structural and mechanical characteristics of the finished product; saving heat and electricity 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 according to the proposed method, cans with compote, after seaming, are installed in a special carrier that provides mechanical tightness of the cans, and subjected to heating in an air stream at a temperature of 150 ° C and a speed of 2.75 m / s for 13 min with continued heating by hot water shower at a temperature of 100 ° C for 10 min, followed by stepwise cooling in baths with water at a temperature of 80 ° C for 4 min, 60 ° C for 4 min and 40 ° C for 5 min, and at this during heating in the stream agretogo air and cooling the jar is subjected to intermittent 2-3 minutes with rotation "bottoms on the lid" frequency of 0.133 s ^-1 with 2-3 min intervals.

An example implementation of the method.

Cans with compote after sealing the lid are installed in a carrier that provides mechanical tightness (to prevent the lid from tearing off during heating) and placed in a chamber where heated air circulates at a temperature of t _B = 150 ° C and a speed of 2.75 m / s, and for 13 minutes, the contents of the cans are subjected to heating with a simultaneous intermittent 2-3-minute rotation of the can from the “bottom to cover” with a frequency of 0.133 s ^-1 with an interval of 2-3 minutes with continued heating by hot water at a temperature of 100 ° C for 10 minutes static state of cans with last stepwise cooling in baths with water at a temperature of 80 ° C for 4 min, 60 ° C for 4 min and 40 ° C for 5 min, and the jar is also subjected to intermittent 2-3-min rotation from bottom to cover "Frequency of 0.133 s ^-1 with an interval of 2-3 minutes

Preheating cans with stewed fruit in a stream of heated air prevents thermal battle during subsequent sterilization by showering with water at a temperature of 100 ° C, and the use of hot water at a temperature of 100 ° C in the second stage of heating provides an intensification of the heat treatment process, since the heat transfer coefficient of water is several times higher than air.

The salient features of the proposed method are: the compote is heated in a stream of heated air at a temperature of 150 ° C and a speed of 2.75 m / s for 13 minutes, followed by continued heating with water at a temperature of 100 ° C for 10 minutes, followed by step cooling in the baths with water at a temperature of 80 ° C for 4 min, 60 ° C for 4 min and 40 ° C for 5 min, and while heating the can in a stream of heated air and cooling, the jar is subjected to intermittent 2-3-minute rotation with The bottom of the lid "frequency of 0.133 s ^-1 yn ervalom 2-3 minutes.

This mode provides industrial sterility of canned food, significant savings in heat energy and improving the quality of the finished product by reducing the duration and ensuring the uniformity of heat treatment.

Literature

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

2. B.L. Flaumenbaum. Basics of food preservation. M .: Light and food industry, 1982.

Claims (1)

A method of sterilizing compote from cherry, including the installation of cans in a carrier that provides tightness, and processing processes by heating and cooling, characterized in that the compote is heated sequentially in an air stream at a temperature of 150 ° C and a speed of 2.75 m / s for 13 min and hot water with a temperature of 100 ° C for 10 min followed by step cooling in baths with water at a temperature of 80 ° C for 4 min, 60 ° C for 4 min and 40 ° C for 5 min, and the process of heating in a stream of heated air and cooling enii jar is subjected to a 2-3 minute intermittent rotation with the "bottoms on the lid" frequency of 0.133 s ^-1 at intervals of 2-3 minutes.