RU2418490C1 - Method for production of pear compote - Google Patents

Abstract

FIELD: food industry.

SUBSTANCE: invention relates to technology of preserved compotes production. The method provides for recipe components preparation, cutting scorzonera, drying it in microwave field as preset process parametres, frying and mincing chestnuts, frying barley grains and soya. Scorzonera, chestnuts, barley grains and soya are mixed. Obtained mixture is extracted with drinking water at preset process parametres. Then, the obtained extract is filtered; syrup is made on its basis. Pears and syrup are packaged, vacuum-sealed and sterilised.

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.

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Description

The invention relates to the production technology of canned compotes.

A known method of producing stewed fruit from pears, involving the preparation of prescription components, the preparation of water sugar syrup with a solids content of 23-27.5%, packing of pears and syrup, sealing and sterilization (Collection of technological instructions for the production of canned food. Volume II. Part 2. - M .: APPP "Konservlodozyot", 1992, p. 75-162).

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

Closest to the proposed method is the production of stewed fruit from pears, which involves preparing the recipe components, roasting and extracting coffee to produce the corresponding extract, decaffeinating it, preparing syrup based on it, packing pears and syrup, sealing and pasteurizing (Ioitko V.M., Zaitseva A.L., Zaitsev M.V. Technology of canning with the use of coffee. l 1. - Mn .: Nesvizh large-sized printing house named after S. Budny, 2007, p. 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 fruits 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 tinge of taste and aroma in the absence of coffee in the recipe, simplifying the technology and reducing the content of boiled fruits in the target product without reducing its shelf life.

This result is achieved in that in a method for the production of compote from pears, which involves preparing the recipe components, preparing syrup on the extract, packing pears and syrup, sealing and heat treatment, according to the invention, the prepared scorzoner is cut, dried in a microwave field to a residual moisture content of about 20% at a power of microwave fields, ensuring the scorzoner is heated to a temperature inside the pieces of 80-90 ° C for at least 1 hour, is fried and crushed, the prepared chestnuts are fried and crushed, the prepared grain barley and soybeans are fried, scorzonera, barley grain, chestnuts and soybeans are mixed in a weight ratio of 7: 7: 2: 4, the resulting mixture is extracted with drinking water at a phase ratio of 1: (6-7) and periodically depressurizing the extraction mixture until boiling water, the corresponding extract is separated and filtered, the syrup is prepared with a solids content of 23-27.5%, 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 preparation of pears, depending on the type of compote being prepared, may include, in addition to inspection and washing, peeling and / or cutting while removing the stem and seed chamber.

The prepared scorzoner 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 ensure the drying time of the scorzoner 1 hour and heating to a temperature inside the 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 scorzoner, barley grain, chestnuts and soybeans are fried according to traditional technology (Nakhmedov F.G. Technology of coffee products. - M .: Light and food industry, 1984, p. 58-73). Scorzoner and chestnuts are crushed. Scorzoner, barley grain, chestnuts and soy are mixed in a weight ratio of 7: 7: 2: 4. 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 31 to 43.5% 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, S. 75-162).

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

An experimental check was carried out during canning with slices without skin of Williams pears 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 boiled pieces,% 25 fifteen fourteen Fruit color natural with a brownish tint with a brownish tint Taste and smell distinct pear well defined, with a coffee touch well defined, with a coffee touch Fruit consistency elastic elastic elastic The appearance of the syrup transparent with separate suspended pulp particles transparent with separate suspended pulp particles transparent with separate suspended pulp particles Shelf life, month 24 6 24

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 fruits in the target product without reducing its shelf life.

Claims (1)

A method for the production of canned stewed fruit from pears, which includes preparing the recipe components, preparing syrup on the extract, packing pears and syrup, sealing and heat treatment, characterized in that the prepared scorzoner is cut, dried in the microwave field to a residual moisture content of about 20% at a microwave field power that provides heating the scorzoner to a temperature inside the slices of 80-90 ° C for at least 1 hour, fry and grind, prepared chestnuts are fried and crushed, prepared barley grain and soya are fried Scoroner, barley grain, chestnuts and soybeans are mixed, mixed in a weight ratio of 7: 7: 2: 4, the resulting mixture is extracted with drinking water at a phase ratio of 1: (6-7) and periodically depressurizing the extraction mixture until the water boils, separate the corresponding extract and filter it, the syrup is prepared with a solids content of 23-27.5%, and heat treatment is carried out until industrial sterility is achieved.