QUINCE COMPOTE STERILIZATION METHOD Russian patent published in 2018 - IPC A23L3/04 A23L2/42 

FIELD: food industry.

SUBSTANCE: quince compote sterilization method involves the installation of cans with the product after being rolled into the carrier, preventing the lids from breaking off during the heat treatment. Jars are cooled in the top row of the first heat treatment zone with water at temperature of 40 °C for 12 min. Water, when the jars are cooled, can be heated to 58–60 °C and it flows down to the jars in the bottom row of the first zone, heating them. Cans are transferred to the second zone, where the cans are cooled in the upper row with water of 60 °C, which heats up to 78–80 °C and drains by heating the cans in the bottom row of the second zone for 12 minutes. Cans are transferred to the third zone, where the cans are cooled in the upper zone by water at a temperature of 80 °C, which heats up to 95–98 °C and drains, heating the cans in the bottom row of the third zone for 12 minutes. Cans are transferred to the fourth zone, where the heating is carried out by air at a temperature of 140 °C and a velocity of 8.0 m/s for 25 minutes. Then the cans enter the upper row of the third zone to continue the heat treatment. Water after heating in the first and second zones is used for cooling in the upper row of the second and third zones. Water after heating in the third zone is used to mix and heat water to the required temperature in all cooling zones. During the heat treatment process the cans are turned upside down with a frequency equal to 0.33 s^-1.

EFFECT: invention provides higher quality of final product.

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