RU2492731C1 - Pear and quince compote sterilisation method - Google Patents

Abstract

FIELD: food industry.

SUBSTANCE: invention is related to preservation industry. The proposed method for sterilisation of pear and quince compote in jars SKO 1-82-1000 involves heating in an air flow at 120-122°C at a rate of 8 - 9 m/s during 20 minutes with subsequent maintenance during 25-35 minutes at heated air temperature equal to 92-95°C and cooling in an atmospheric air flow at 25-28°C at a rate of 7-8 m/s during 18 minutes. During all the stages of the heat treatment the jar is subjected to interrupted 2-3-minute turning upside down with a frequency equal to 0.166 s^-1 with a 2-3 minutes interval.

EFFECT: method ensures significant saving of heat energy and water, preservation of biologically active components of raw materials and decrease of boiled and cracked fruits quantity.

Description

The invention relates to the canning industry, and in particular to methods of sterilizing compote from pears and quinces in cans SKO 1-82-1000.

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:

$$\frac{25-(35-45)-25}{\mathrm{one\; hundred}}\cdot 118\mathrm{to}P\mathrm{but},$$

where 25 is the duration of heating the water in the autoclave to 100 ° C, min; (35-45) - duration of own sterilization, min; 25 - cooling time, min; 118 - back pressure in the autoclave, kpa; 100 - sterilization temperature, ° C.

The disadvantages of this method are:

- the long duration of the process and the unevenness of the heat treatment of various layers of the product in the bank and the peripheral layers of the product receive excessive heat exposure;

- violation of the integrity of the fruit due to excessive heat and digestion of individual fruits located in the peripheral areas of the banks;

- high consumption of heat and electric 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 peels; 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 are heated in a stream of air with a temperature of 120-122 ° C and a speed of 8-9 m / s for 20 minutes, followed by exposure for 25-35 minutes at a temperature of 92-95 ° C and cooling in a stream of air with a temperature of 25-28 ° C and a speed of 7-8 m / s for 18 and at the same time during can heat treatment subjected to intermittent 2-3 minute rotation from "to a foot on the cover ”with a frequency of 0.166 s ^-1 with an interval of 2-3 minutes.

An example implementation of the method.

Banks with compote, after sealing cover mounted in a carrier providing the mechanical tightness (to prevent cap failure during heating) and placed in a chamber where the heated air circulates _{in the} temperature t = 120-122 ° C and a speed of 8-9 m / s, and for 20 minutes the contents of the cans are subjected to heating with simultaneous intermittent 2-3-minute rotation of the can from the “bottom to the lid” with a frequency of 0.166 s ^-1 with an interval of 2-3 minutes, then the carrier with the cans is transferred to a holding chamber with heated air with a temperature 92-95 ° C for 25-35 min at the same time m banks are subjected to intermittent 2-3-minute rotation from “bottom to cover” with a frequency of 0.166 s ^-1 with an interval of 2-3 minutes and further into the chamber for cooling in a stream of atmospheric air with a temperature of 25-28 ° C and a speed of 7-8 m / s for 20 minutes and the cans are subjected to intermittent 2-3-minute rotation from “bottom to cover” with a frequency of 0.166 s ^-1 with an interval of 2-3 minutes.

The use of intermittent rotation of the cans contributes to the intensification of the process of internal heat transfer in the can, and also prevents the mechanical rubbing of fruits among themselves, which helps to preserve their integrity, and reducing the duration of the process contributes to a more complete preservation of biologically active components contained in the feedstock.

In addition, the intermittent rotation of the cans saves the energy spent on the rotation of the cans, while ensuring the uniformity of the heat treatment process and its intensification.

Salient features of the proposed method are: the compote is heated in an air stream at a temperature of 120-122 ° C and a speed of 8-9 m / s for 20 minutes, followed by exposure in a chamber at a temperature of 92-95 ° C for 25-35 minutes and further cooling in a stream of atmospheric air with a temperature of 25-28 ° C at a speed of 7-8 m / s for 18 min and at the same time during the heat treatment the jar is subjected to intermittent 2-3-minute rotation from “bottom to cover” with a frequency of 0.166 s ^-1 with an interval of 2-3 minutes.

This mode provides significant savings in heat energy, completely eliminates the use of water in the process of heat sterilization and provides improved quality of the finished product by reducing the duration of heating and rotation and ensuring uniform heat treatment.

Literature

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

Claims (1)

A method of sterilizing compote from pears and quinces, including installing cans in a carrier, ensuring tightness and heating, aging and cooling processes, characterized in that the compote is heated in an air stream at a temperature of 120-122 ° C and a speed of 8-9 m / s for 20 min, followed by exposure at a temperature of 92-95 ° C for 25-35 min and cooling in a stream of air at a temperature of 25-28 ° C and a speed of 7-8 m / s for 18 min, while in the process of heat treatment the can subjected to intermittent 2-3-minute rotation from the bottom to the cover with a frequency of 0.16 6 s ^-1 with an interval of 2-3 minutes.