RU2470560C1 - Pear and quince compote production method - Google Patents

Abstract

FIELD: food industry.

SUBSTANCE: invention is related to preservation industry. One performs fruits pouring with 85°C hot water during 2-3 minutes. Then one replaces water with a 97-98°C syrup. Then the jars are sealed, put into the carrier ensuring mechanical air-tightness. Then one performs the jars heating in a heated 150°C air flow at a rate of 5-6 m/s during 3 minutes. Then the jars are heated by way of showering with a 100°C hot water during 15 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 the whole process of heat treatment the jars are turned upside down with a frequency equal to 0.133 s^-1.

EFFECT: invention ensures prevention of thermal breakage of jars, simplification of the sterilisation process and the apparatus design, the ready product quality enhancement and the heat treatment duration reduction.

Description

The proposed method for the invention relates to the canning industry, and in particular to methods for sterilizing compote from pears and quinces 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], including packaging of fruits, pouring hot syrup at a temperature of 97-98 ° C for 1.5-2 min, rolling, heating cans in a stream of heated air with a temperature of 100-105 ° C for 12-15 minutes, subsequent cooling at a temperature of 20-35 ° C for 10-15 minutes, and during the entire heat treatment process, the cans are rotated from the bottom to the lid with a frequency 0.133 s ^-1 .

The disadvantages of this method are:

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

- the complexity of the technical implementation of the heat transfer process, requiring the provision in the chamber for thermal sterilization of the required parameters of the heated air (speed, temperature).

The technical result of the invention is aimed at creating a method for the production of compote, providing a reduction in the duration of the process, improving the quality of the finished product, preventing thermal battle of cans and simplifying the implementation process and the design of the apparatus.

The specified technical result is achieved due to the fact that the fruits packaged in cans are filled with hot water at a temperature of 85 ° C for 2-3 minutes, then this water is replaced with syrup at a temperature of 97-98 ° C, then the cans are rolled up, installed in a carrier that provides mechanical tightness cans, and subjected to heating in a stream of heated air with a temperature of 130 ° C and a speed of 8-9 m / s for 6 min, followed by heating by hot showering at a temperature of 100 ° C for 18 min, followed by step cooling in 8 water baths 0 ° C for 4 minutes, 60 ° C for 4 minutes and 40 ° C for 5 minutes, and during this process, the cans rotate from the “bottom to the lid” with a frequency of 0.133 s ^-1 .

An example of the method

Before filling the syrup for 2-3 minutes, pour hot water at a temperature of 85 ° C into jars with laid fruits, then replace this water with syrup at a temperature of 95-97 ° C, roll the jars, install them in a carrier that provides mechanical tightness of the jars, and heat them in a heated air stream with a temperature of 150 ° C and a speed of 5-6 m / s for 3 min, continued heating by hot water showering at a temperature of 100 ° C for 15 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 minutes, and during this process, the cans rotate from the “bottom to the lid” with a frequency of 0.133 s ^-1 .

The salient features of the proposed method are: in cans with fruits, before pouring syrup for 2-3 minutes, pour hot water at a temperature of 85 ° C, then replace this water with syrup at a temperature of 97-98 ° C, roll up cans, install in a carrier that provides mechanical tightness of the cans, and subjected to heating in a stream of heated air with a temperature of 150 ° C and a speed of 5-6 m / s for 3 minutes, continued heating by hot showering at a temperature of 100 ° C for 15 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.

The use of pre-heating the compote in a stream of heated air provides an opportunity, without causing thermal battle, to heat the compote by hot water stirring at a temperature of 100 ° C, which also makes it possible to simplify the heat treatment process and the design of the apparatus for heat sterilization.

This mode ensures the industrial sterility of canned food, which is confirmed by the magnitude of the sterilizing effect, which corresponds to the normative value of 150-200 conventional. min

In addition, the proposed method in comparison with the prototype provides significant savings in thermal energy and water in the process of heat sterilization and improves the quality of the finished product by reducing the duration and ensuring the uniformity of heat treatment.

Literature

1. RF patent No. 2340257 dated 12/10/2008.

Claims (1)

A method of producing compote from pears and quinces, characterized in that the fruits are filled with hot water at a temperature of 85 ° C for 2-3 minutes, replaced with syrup at a temperature of 97-98 ° C, then the cans are rolled up, installed in a carrier that provides mechanical tightness of the cans , and subjected to heating in a stream of heated air with a temperature of 150 ° C and a speed of 5-6 m / s for 3 minutes, continued heating by hot showering at a temperature of 100 ° C for 15 minutes, followed by step cooling in 80 ° C water baths for 4 min, 60 C for 4 minutes and 40 ° C for 5 minutes, and wherein during the entire heat treatment process to rotate banks "on the bedplate cover" at a frequency of 0.133 s ^-1.