RU2401614C1 - Method of complex girasol-sunflower processing - Google Patents

Abstract

FIELD: food industry.

SUBSTANCE: invention relates to a technology for complex vegetables processing. Method provides for girasol-sunflower washing, its grinding, electrocontact heating, extraction with acidified water at the specified parametres of the extraction 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, photosterilisation and packing of remaining concentrate (which is an inulin-containing solution free of related substances) under aseptic conditions.

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

Description

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

It is known from the prior art that the use of sunflower as a forage crop and the indication that root crops of sunflower can be used by analogy with Jerusalem artichoke (Kshnikatkina A.N. Some issues of agricultural technology of Jerusalem artichoke and sunflower // Proceedings "Innovative technologies and products: Jerusalem artichoke and sunflower - problems cultivation and use. "Issue 1. - Novosibirsk: APF" ARIS ", 1998, p.23-34).

However, information on the use of sunflower for integrated industrial processing is not known from the prior art.

The technical result of the invention is the provision of integrated processing of sunflower 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 sunflower seeds involves washing the sunflower seeds, grinding them, pouring them with acidified water at a phase ratio of 1: 1 and pH 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 stage extraction, 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.

The sunflower 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 with 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 ra fissile 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, it provides the desired product with gelling properties.

Thus, the proposed method allows for the integrated processing of sunflower 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 sunflower, washing of sunflower, grinding, pouring with acidified water to achieve a pH of the extraction mixture of 5-6.5 at a phase ratio of 1: 1, contact heating the resulting mixture to a temperature of 55-65 ° C, extraction with periodic pressure relief in 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 and 0.8-2 kDa with the return of the low molecular weight fraction to the stage extraction, 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 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.