RU2421019C1 - Method for complex processing of scorzonera - Google Patents

Abstract

FIELD: food industry.

SUBSTANCE: invention relates to a technology for complex vegetables processing. Method provides for scorzonera washing, its grinding, pouring with acidified water, electrical contact heating, extraction at the specified parameters of the process, serial passing of extract through membranes with retention threshold of 6-8 kDa and 0.8-2 kDa with return of low molecular fraction at the stage of extraction, concentration of remaining fractions with reverse osmosis, combination of high molecular concentrate fraction with extraction cake to produce gelling concentrate. The remaining concentrate represented by an inulin-containing solution free from related substances undergoes photosterilisation and packaging under aseptic conditions.

EFFECT: method makes it possible to provide for complex processing of scorzonera with full utilisation of nutritious and biologically active substances.

Description

The invention relates to the technology of integrated processing of vegetables.

It is known the use of scorzoner in dried, roasted and ground form for the production of coffee drinks (Cerevitinov F.V. Chemistry and commodity research of fresh fruits and vegetables. Volume II. - M .: Gostorgizdat, 1949, p. 372).

When brewing the resulting drinks, a large amount of waste is formed in the form of sediment.

Information on the use of scorzoner for complex industrial processing is not known from the prior art.

The technical result of the invention is the provision of integrated processing of scorzoner with obtaining as target products a gelling concentrate and an inulin-containing solution with the complete utilization of nutrient and biologically active substances of the feedstock.

This result is achieved by the fact that the method of complex processing of scorzoner involves washing the scorzoner, crushing it, pouring it with acidified water at a phase ratio of 1: 1 and a pH of 5-6.5, contact heating the resulting mixture to a temperature of 55-65 ° C, extraction with periodic discharge pressure in the extraction mixture until the extractant boils, followed by separation of the extract and meal, sequential passage of the extract through membranes with a retention threshold of 6-8 kDa and 0.8-2 kDa with the return of the low molecular weight fraction to the ext Ragging, concentration of the remaining fractions by reverse osmosis to a solids content of at least 15%, combining a high molecular weight fraction concentrate with meal to obtain a gelling concentrate, photo sterilization and packing under aseptic conditions of the remaining concentrate to obtain an inulin-containing solution.

The method is implemented as follows.

Scorzoner is washed, inspected and ground, for example, on a crusher to a particle size of 1-2 mm. The ground mass is poured with acidified water until the extraction mixture reaches a pH of 5-6.5 at a phase ratio of 1: 1, is subjected to electrical contact heating to a temperature of 55-65 ° C at the recommended process parameters (Guseva M.V. Improving the process of extraction of target components during electrical contact processing mixtures of plant raw materials. Abstract of a dissertation of a candidate of technical sciences - M .: MGUPP, 2008, pp. 13-16), extracted with periodic depressurization of the extraction mixture until the extractant boils at the recommended process parameters (RU 2255788 C1, 2005) and p The phases are separated by any known technology.

The separated extract is subjected to molecular separation by sequential passage through membranes with a retention threshold of 6-8 kDa and 0.8-2 kDa. The low molecular weight fraction separated in the last step is returned to the extraction step. The remaining fractions are concentrated by reverse osmosis to a solids content of at least 15%. The high molecular weight fraction concentrate containing protein and pectin substances is combined with meal to obtain a gelling concentrate. The remaining concentrate, which is an inulin-containing solution purified from concomitant substances, is subjected to photo sterilization and packaged under aseptic conditions.

The recirculation of the low molecular weight fraction of extractives realized in the proposed method leads to saturation of the extractant with soluble salts of organic and inorganic acids, mono-, di- and trisaccharides and polyphenol substances, which, after extraction, remain in the meal, and the return of protein and soluble pectin substances to it in the form of a concentrate of a high molecular weight fraction of extractive substances provides the desired product with gelling properties.

Thus, the proposed method allows for the integrated processing of scorzoner with obtaining inulin-containing solution as target products for use in food or medical purposes and a gelling concentrate enriched with biologically active substances, with complete utilization of the latter.

Claims (1)

A method of complex processing of scorzoner, which includes washing the scorzoner, its grinding, pouring with acidified water at a phase ratio of 1: 1 and a pH of 5-6.5, electrical contact heating of the resulting mixture to a temperature of 55-65 ° C, extraction with periodic pressure relief in the extraction mixture to boiling of the extractant with subsequent separation of the extract and meal, sequential passage of the extract through membranes with a retention threshold of 6-8 kDa and 0.8-2 kDa with the return of the low molecular weight fraction to the extraction stage, concentration of of these fractions by reverse osmosis to a solids content of at least 15%, combining the high molecular weight fraction concentrate with meal to obtain a gelling concentrate, and the remaining concentrate, which is an inulin-containing solution purified from the accompanying substances, is subjected to photo sterilization and packaged under aseptic conditions.