RU2421030C1 - Method for complex processing of scorzonera - Google Patents

Abstract

FIELD: food industry.

SUBSTANCE: invention relates to a technology for complex vegetables processing. The method includes washing and milling scorzonera, its treatment in a microwave field until inactivation of native enzymes, extraction with acid water at preset parameters of the process with further separation of extract and extraction cake, consistent passing of the extract through membrane with retention threshold of 6-8 kilodaltons and 0.8-2 kilodaltons with return of low-molecular fraction on extraction phase, concentration of the rest of the fractions through reverse osmosis, combining of concentrate of low-molecular fraction with extraction cake with gelatinising concentrate obtaining. 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, grinding it, processing in the microwave field to inactivate native enzymes, extracting with acidified water at a phase ratio of 1: 1, pH 5-6.5, temperature 55-65 ° C and periodic pressure relief 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 extra stage carbonating, concentrating the remaining fractions with reverse osmosis to a solids content of at least 15%, combining the high molecular weight fraction concentrate with meal to produce a gelling concentrate, photo sterilizing and packing under aseptic conditions 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 processed in the microwave field until the native enzymes are inactivated under processing conditions calculated according to known dependencies (Dzharullaev D.S. Scientific and technical principles for creating intensive technologies for processing fruit and berry raw materials using an ultra-high frequency electromagnetic field. Abstract of thesis. N. - Krasnodar: Dagestan branch of the research and production technological center "Synthesis" ATN RF, 2005, p.12-13), pour acidified water until the pH of the extraction mixture reaches 5-6.5 with a phase ratio of 1 : 1, extracted at a temperature of 55-65 ° C and periodically depressurizing the extraction mixture until the extractant boils at the recommended process parameters (RU 2255788 C1, 2005) and 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, processing in the microwave field until inactivation of native enzymes, extraction with acidified water at a phase ratio of 1: 1, pH 5-6.5, temperature 55-65 ° C and periodic pressure relief in the extraction mixtures until the extractant boils, followed by separation of the extract and the 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 the residue the resulting 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 Packed under aseptic conditions.