RU2396867C1 - Production method of preserved raspberry compote - Google Patents

Abstract

FIELD: food industry.

SUBSTANCE: invention relates to technology of canned compotes manufacturing. Method provides for preparation of the recipe components, cooking of syrup out of extract, packing of raspberries and syrup, sealing and thermal processing and thereafter prepared girasol/sunflower is cut, dried in microwave field at preset parametres till residual humidity about 20% at microwave field power providing warming of girasol/sunflower inside the bits till temperature 80-90°C for 1 hour minimum, roasted and chopped. Prepared acorns are fried and minced, girasol/sunflower and acorns are mixed in mass ratio 1:1. Obtained mixture is extracted by drinking water at phases ratio 1:(6-7) and periodic depressurisation in the extraction mixture till water boils. Corresponding extract is separated and filtered. Syrup is prepared with dry substances content of 37.5-41% and the syrup is sterilised until industrial sterility is achieved.

EFFECT: method allows to produce compote with coffee flavour and aroma tones with no coffee content, simplification of technology and reduced content of boiled fruits in end product without reduce of product's storage time.

1 tbl

Description

The invention relates to the production technology of canned compotes.

A known method for the production of raspberry compote, involving the preparation of prescription components, the preparation of water sugar syrup with a solids content of 37.5-41%, packing raspberries and syrup, sealing and sterilization (Collection of technological instructions for the production of canned food. Volume II. Part 2 - M .: APPP "Canned Fruit", 1992, p. 75-162).

The disadvantage of this method is the content in the target product of a large number of boiled berries.

Closest to the proposed method is the production of raspberry compote, which involves preparing the recipe components, roasting and extracting coffee to obtain the appropriate extract, decaffeinating it, preparing syrup based on it, packing raspberries and syrup, sealing and pasteurizing (Ioitko V.M., Zaitseva AL, Zaitsev MV Preservation technology using coffee. Collection of reports of the VI International scientific-practical conference "Improving the technology and equipment of food production." Part 1 - Mn .: Nesvizhskaya Integrated Printing House they S.Budnogo, 2007 s.260-263)..

This method allows you to get compote with a specific coffee shade of taste and aroma and slightly reduce the content of boiled berries in the target product by replacing sterilization with pasteurization, but has a sophisticated technology due to the need for decaffeination of the extract and a reduced shelf life of the target product.

The technical result of the invention is to obtain compote with a specific coffee tint of taste and aroma in the absence of coffee in the recipe, simplifying the technology and reducing the content of boiled berries in the target product without reducing its shelf life.

This result is achieved by the fact that in the method of producing raspberry compote, which involves preparing the recipe components, preparing syrup on the extract, packing raspberries and syrup, sealing and heat treating, according to the invention, the prepared sunflower is cut, dried in the microwave field to a residual moisture content of about 20% at power microwave fields, providing heating of the topisolnikov to a temperature inside the pieces of 80-90 ° C, for at least 1 hour, fried and crushed, prepared acorns are fried and crushed, mixed sunflower and acorns in a weight ratio of 1: 1, extract the resulting mixture with drinking water at a phase ratio of 1: (6-7) and periodically depressurize the extraction mixture until water boils, separate the corresponding extract and filter it, the syrup is prepared with a dry matter content 37.5-41%, and heat treatment is carried out until industrial sterility is achieved.

The method is implemented as follows.

Prescription components are prepared according to traditional technology.

The prepared sunflower is cut and dried in the microwave field to a residual moisture content of about 20% for at least 1 hour. Moreover, according to well-known dependencies (Gubiev YK Scientific and practical principles of thermotechnological processes of food production in the electromagnetic field of the microwave. Abstract of the dissertation of the Doctor of Technical Sciences - M .: MTIPP, 1990, pp. 7-11) calculate the power microwave fields, allowing to provide drying time for topsoil 1 hour and heating to a temperature inside pieces of 80 and 90 ° C. The microwave field power is set greater than or equal to the second value and less than or equal to the smaller of the first and third values of the calculated powers.

Drying in the microwave field at temperatures above 90 ° C leads to premature caramelization of sugars. Drying in the microwave field at temperatures below 80 ° C and a reduction in drying time of less than 1 hour lead to a reduction in the yield of extractives. Since an increase in the drying time automatically leads to an increase in the specific energy consumption, the maximum value of the drying time is determined by the Harrington desirability function for the maximum yield of extractive substances with minimal specific energy consumption.

Then the sunflower and acorns are fried according to traditional technology (Nakhmedov F.G. Technology of coffee products. - M .: Light and food industry, 1984, p. 58-73), crushed and mixed in a ratio by weight of 1: 1. The resulting mixture is poured with drinking water at a phase ratio of 1: (6-7) and extracted with periodic depressurization of the extraction mixture until water boils at the recommended process parameters (RU 2255788 C1, 2005). After extraction is complete, the extract is separated from the meal and filtered by any known technique. Sugar is added to the obtained extract with a solids content of 18-19.5% and a syrup with a solids content of 37.5 to 41% is cooked in accordance with standard formulations using standard technology (Collection of technological instructions for the production of canned food. Volume II. Part 2 - M .: APPP "Konservlodozyot", 1992, p. 75-162).

Raspberries and the resulting syrup are Packed, sealed and sterilized with a ratio of components and sterilization modes in accordance with standard technology.

A pilot test was carried out when preserving raspberries of Progress variety with a solids content of 11% in glass jars with a capacity of 1 dm ³ . The canning was carried out according to standard technology (control), according to the closest analogue (standard) and by the proposed method (experience). The results of the experimental verification are summarized in table.

Organoleptic and consumer properties of compotes Indicator The control Reference Experience The number of boiled berries,% thirty 25 22 Berry color Natural With a brownish tint With a brownish tint Taste and smell Well defined, characteristic for raspberries Well defined, with a coffee touch Well defined, with a coffee touch Berry consistency Soft Soft Soft The appearance of the syrup Transparent with separate suspended particles of pulp Transparent with separate suspended particles of pulp Transparent with separate suspended particles of pulp Shelf life, months eighteen 6 eighteen

Thus, the proposed method allows to obtain compote with coffee shades of taste and aroma in the absence of coffee in the recipe, to simplify the technology and reduce the content of boiled berries in the target product without reducing its shelf life.

Claims (1)

A method for the production of canned raspberry compote, which includes preparing the recipe components, preparing syrup on the extract, packing raspberries and syrup, sealing and heat treatment, characterized in that the prepared topical sunflower is cut, dried in the microwave field to a residual moisture content of about 20% with a microwave field power that provides warming the sunflower to a temperature inside the pieces of 80-90 ° C, for at least 1 hour, fry and grind, prepared acorns are fried and grinded, mix the sunflower and the stomach and in a weight ratio of 1: 1, the resulting mixture is extracted with drinking water at a phase ratio of 1: (6-7) and periodic pressure relief in the extraction mixture until water boils, the corresponding extract is separated and filtered, the syrup is prepared with a solids content of 37, 5-41%, and heat treatment is carried out until industrial sterility is achieved.