RU2210278C1 - Method of producing juice from raw plant material - Google Patents

Abstract

FIELD: food-processing industry. SUBSTANCE: method involves holding raw plant material in water comprising preparation produced from Pythium gracile micromycet biomass by predetermined process; partly or fully freezing resultant mass, with following partly defrosting of said mass and squeezing juice therefrom. EFFECT: improved quality of juice by eliminating opalescence thereof and increased efficiency.

Description

 The invention relates to the technology of juice production.

 A known method of producing juice from plant materials, providing for the exposure of raw materials in water, its partial freezing or complete freezing and partial thawing and squeezing of juice (JP 57-15870 B2, 04/04/1982).

 The disadvantage of this method is to obtain juice prone to microbial spoilage.

Closest to the proposed achieved result is a method of producing juice from plant materials, which provides for the soaking of raw materials in water containing a lipid-containing biomass extract of micromycete Pythium gracile in an amount of 0.5-1 • 10 ⁴ mg / t in terms of the total content of arachidonic and eicosapentaenoic acids , within 3-8 hours, partial freezing or full freezing and partial thawing and squeezing of juice (RU 2165176 C1, 04/20/2001).

 This method allows you to increase the resistance of the juice to microbial spoilage, but has a low productivity, and the resulting juice opalescent, which is estimated as a deterioration in its organoleptic properties.

 The technical result of the invention is the elimination of opalescence and increased productivity.

This result is achieved by the fact that in the method for producing juice from plant materials, which involves holding the raw materials in water, partially freezing or completely freezing and partially thawing and squeezing the juice, according to the invention, a preparation obtained by sequential extraction of the biomass of Pythium gracile micromycete with a non-polar extractant is introduced into the water in a supercritical state, water, alkali, water, acid, water, alkali and water, followed by combining the first extract with a solid residue, in an amount of 0.5-1 • 10 ⁴ mg / t, and the exposure is carried out for 2-5 hours.

 The method is implemented as follows.

The dry biomass of Pythium gracile micromycete is extracted with a non-polar extractant, for example carbon dioxide or hexane, in a supercritical state. At this stage of extraction, the first extract is separated, which is further used to obtain the drug. Next, the biomass is sequentially extracted with water, alkali, water, acid, water, alkali and water. The solid residue obtained after completion of all the extraction stages listed above is combined with the first extract to obtain a preparation that is introduced into water at the rate of 0.5-1 • 10 ⁴ mg / t of plant material to be aged. The raw material is kept in water with the drug for 2-5 hours. The drug contains arachidonic and eicosapentaenoic acids and chitosan, which are capable of stimulating plant defense reactions and the synthesis of phytoalexins, and the amount of related substances of a lipid nature is reduced in comparison with the closest analogue. In combination with chitosan, arachidonic and eicosapentaenoic acids are more easily assimilated by plants, so the exposure time can be reduced to 2-5 hours. Further, the raw materials are partially frozen or completely frozen and partially thawed, and then the juice is squeezed out of it. As a result of damage to cell membranes by ice crystals, juice loss increases, and phytoalexins that prevent microbial spoilage pass into juice. The lower in comparison with the closest analogue content of lipid substances in the stimulant of the protective reactions of plants does not lead to opalescence of the juice.

 Example 1

Pythium gracile micromycete biomass preparation is prepared according to the technology described above using carbon dioxide as a non-polar extractant, as caustic soda alkali and as hydrochloric acid. The greengage purple plum is kept for 2 hours in water containing 1 • 10 ⁴ mg / t of the preparation, after which it is partially frozen until about 60% moisture is transferred to the solid phase, and then the juice is squeezed out. The juice of the control batch is prepared according to the technology of the closest analogue using a CO ₂ extract from biomass of Pythium gracile micromycete taken in an amount of 1 • 10 ⁴ mg / t, calculated on the total content of arachidonic and eicosapentaenoic acids, and a holding time of 3 hours. The control juice is opalescent. The shelf life of the juice of the experimental and control lots until the appearance of visually observed signs of fermentation is the same.

 Example 2

 The juice is produced according to example 1, but with the use of Anadolskaya cherries, hexane in the preparation of the preparation and the lipid extract from the micromycete biomass, the content of the extract in water in terms of the same acids and preparation 0.5 mg / t, the exposure time of the experimental batch is 5 hours , and the control 8 hours, and with complete freezing and subsequent partial thawing of cherries until about 70% moisture is transferred to the liquid phase. The results are consistent with example 1.

 Thus, the proposed method allows to exclude opalescence of the juice and increase productivity by reducing the exposure time of raw materials in water before freezing.

Claims (1)

A method for the production of juice from plant materials, which involves holding the raw material in water, partially freezing or completely freezing and partially thawing and squeezing the juice, characterized in that the preparation obtained by sequential extraction of the biomass of Pythium gracile micromycete with a non-polar supercritical state is extracted with water, water , alkali, water, acid, water, alkali and water and then combining the first extract with the solid residue in an amount of 0,5-1 • April ¹⁰ mg / m, and exposure is carried out in Techa s 2-5 hours.