RU2398779C1 - Method for production of inulin-containing solution from girasol - Google Patents

Abstract

FIELD: food industry.

SUBSTANCE: method provides for washing and grinding of girasol, its pouring with acidified water and electrocontact heating, extraction at the specified parameters of the process, concentration of extract by reverse osmosis, photosterilisation and packing under aseptic conditions, to the temperature of 55-65°C. Extraction is carried out at phase ratio of 1:1.2, pH 5-6.5 and periodic collapse of pressure in extraction mixture until extractant boils. Separated extract is concentrated by reverse osmosis until content of dry substances of 15-20%, photosterilised and packed under aseptic conditions.

EFFECT: method makes it possible to reduce colouration of inulin with relative high yield of the latter as finished product, to reduce power inputs and to provide for finished product storage life of at least a year without significant change in its consumer and technological properties.

Description

The invention relates to a technology for the production of an inulin-containing solution for food or medical purposes.

A known method of producing an inulin-containing solution from Jerusalem artichoke, including washing Jerusalem artichoke, inspecting it, mechanically cleaning, grinding, electroplasmolysis, pressing to separate juice from squeezed juice, extracting squeezed juice with drinking water, blending juice and extract, adding citric acid, heating, clarification with bentonite, centrifugation with bentonite, centrifugation filtering to obtain the target product (Ibramji J. Use of Jerusalem artichoke in the technology of canned fruit. Abstract of thesis, Candidate of Technical Sciences - Odessa: OTIPP, 1993, pp. 7-13).

The disadvantages of this method are the low yield of inulin, amounting to not more than 65% of theoretically possible, and the unsuitability of the target product for storage due to hydrolysis of inulin with citric acid.

Closest to the proposed method is the production of an inulin-containing solution from Jerusalem artichoke, which includes washing Jerusalem artichoke, steam cleaning, tertiary treatment, cutting, blanching, rubbing, extracting with acidified water and separating the liquid phase as the target product (Akopyan Yu.R. Development of technology for producing fructose syrup from Jerusalem artichoke.Abstract of dissertation of a candidate of technical sciences - M .: MGAPP, 1994, pp. 6-14).

This method allows to increase the yield of inulin to 83.2% of theoretically possible, but has a high energy intensity and high color of the target product.

The technical result of the invention is to reduce energy intensity and color reduction of the target product.

This result is achieved by the fact that in the method of producing an inulin-containing solution from Jerusalem artichoke, which involves washing and grinding Jerusalem artichoke, extracting it with acidified water to separate the liquid phase as the target product, according to the invention, the extraction is carried out at a phase ratio of 1: 1.2, pH 5-6 5 and periodically depressurizing the extraction mixture until the extractant boils, the extraction mixture is subjected to preliminary electric contact heating to a temperature of 55-65 ° C, and the separated extract is concentrated comfort by reverse osmosis to a solids content of 15-20% is subjected fotosterilizatsii and packed under aseptic conditions.

The method is implemented as follows.

Jerusalem artichoke according to TU 8741-001-11866470-94 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 pH of the extraction mixture reaches 5-6.5 with a phase ratio of 1: 1.2, 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 with electrocontact processing of a mixture of plant raw materials. Abstract of the dissertation of the candidate of technical sciences - M .: MGUPP, 2008, p.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 Separate the phases by any known technology. The liquid phase is concentrated by reverse osmosis to a solids content of 15-20%, subjected to photo sterilization and Packed under aseptic conditions to obtain the target product.

It has been experimentally established that when implementing the described technology, the inulin yield is 87% of the theoretically possible. The color of the target product A ₄₇₀ obtained by the described technology and the closest analogue was 0.018 and 0.350, respectively. The energy consumption of the proposed method compared with the closest analogue is reduced by approximately 22%. At the same time, the target product has a shelf life of at least 1 year without significant changes in consumer and technological properties.

Claims (1)

A method of producing an inulin-containing solution from Jerusalem artichoke, which involves washing and grinding Jerusalem artichoke, extracting it with acidified water and separating the extract, characterized in that the extraction mixture is subjected to preliminary electrical contact heating to a temperature of 55-65 ° C, extraction is carried out at a phase ratio of 1: 1.2, pH 5-6.5 and periodic depressurization in the extraction mixture until the extractant boils and the separated extract is concentrated by reverse osmosis to a solids content of 15-20%, photo is subjected sterilization and packaged in aseptic conditions.