RU2409260C1 - Method for production of grapes compote - Google Patents

Abstract

FIELD: food industry.

SUBSTANCE: invention relates to technology of canned compotes manufacturing. Recipe components are prepared. It is cut and dried in microwave field at preset process parametres. Dandelion roots are roasted and milled. Acorns and nut kernels are roasted and milled. Barley and oat grains are roasted. Dandelion roots, barley grains, oat grains and nut kernels are mixed. Obtained mixture is extracted by drinking water at preset process parametres. Obtained extract is filtered. Syrup is cooked out of it. Grapes and syrup are packaged, vacuum-sealed and sterilised.

EFFECT: invention provides for reduction of boiled fruits content in the finished product without detriment to its storage life.

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Description

The invention relates to the production technology of canned compotes.

A known method of producing compote from grapes, involving the preparation of prescription components, the preparation of sugar syrup with water solids of 23.5-26.5%, packing grapes and syrup, sealing and sterilization (Collection of technological instructions for the production of canned food. Volume II. Part 2. - M .: APPP "Conserved 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 one is a method for producing compote from grapes, which involves preparing the recipe components, roasting and extracting coffee to produce the corresponding extract, decaffeinating it, preparing syrup based on it, packing grapes and syrup, sealing and pasteurizing (Ioitko V.M., Zaitseva A.L., Zaitsev M.V. Preservation technology using coffee. // Collection of reports of the VI International Scientific and Practical Conference "Improving Food Processing Technologies and Equipment . Tv "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 reduce the content in the target product of boiled fruits without reducing the shelf life.

This result is achieved in that in a method for producing compote from grapes, which involves preparing the recipe components, preparing syrup on the extract, packing grapes and syrup, sealing and heat treatment, according to the invention, the prepared dandelion root is cut, dried in the microwave field to a residual moisture content of about 20% at power of the microwave field, providing heating of the dandelion root to a temperature inside the pieces of 80-90 ° C, for at least 1 hour, fry and grind, prepared acorns and walnut kernels fry crushed, prepared barley and oat grains are fried, dandelion root, barley grains, oats, acorns and kernels are mixed in a ratio by weight of 3: 7: 3: 4: 3, the resulting mixture is extracted with drinking water at a phase ratio of 1: (6- 7) and periodically depressurizing the extraction mixture until water boils, separate the corresponding extract and filter it, syrup is prepared with a solids content of 23.5-26.5%, 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 dandelion root 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 a drying time of dandelion root for 1 hour and warming to a temperature inside pieces of 80 and 90 ° C. The power of the microwave field 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 a temperature 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 extractives with the minimum specific energy consumption.

Then the dandelion root, barley grain, oat grain, acorns and walnut kernels are fried using traditional technology (Nakhmedov F.G. Technology of coffee products. - M.: Light and food industry, 1984, p. 58-73). Dandelion root, acorns and kernels are chopped. Mix dandelion root, barley grain, oats, acorns and kernels in a ratio by weight of 3: 7: 3: 4: 3. 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 23.5 to 26.5% 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 "Canned Food", 1992, p. 75-162).

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

Pilot testing was carried out when preserving Pomegranate grapes with a solids content of 12% 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 berries with cracked skin,% fifteen 10 10 Berry color natural with brownish hues with brownish hues Taste and smell pronounced grapevine well defined, with a coffee touch well defined, with a coffee touch Berry consistency elastic elastic elastic The appearance of the syrup transparent with separate suspended pulp particles transparent with separate suspended pulp particles transparent about individual suspended particles of pulp Shelf life, months eighteen 6 eighteen

Thus, the proposed method allows to reduce the content in the target product of boiled fruits without reducing the shelf life.

Claims (1)

A method of producing compote from grapes, which involves preparing the recipe components, preparing syrup on the extract, packing grapes and syrup, sealing and heat treatment, characterized in that the prepared dandelion root is cut, dried in the microwave field to a residual moisture content of about 20% with a microwave field power that provides warming the dandelion root to a temperature inside the pieces of 80-90 ° C, for at least 1 hour, fry and grind, prepared acorns and walnut kernels, fry and grind, prepared barley grain and oats are fried, dandelion root, barley grain, oats, acorns and walnut kernels are mixed in a weight ratio of 3: 7: 3: 4: 3, the resulting mixture is extracted with drinking water at a phase ratio of 1: (6-7) and periodic discharge pressure in the extraction mixture until water boils, separate the corresponding extract and filter it, the syrup is prepared with a solids content of 23.5-26.5%, and sterilization is carried out as a heat treatment.