CZ2013997A3 - Process for obtaining fibrous material - Google Patents

Abstract

Lupine husks, lupine cores or lupine flour are mixed with water, adjusted to pH 8 to 8.5 with alkaline pH while stirring, and the resulting suspension is cooled to 60-70 degC. the protein digestion enzyme is hydrolysed and the protein is hydrolysed while stirring to form a solid fiber filter cake which is washed, dried and ground. When obtaining fiber from ground lupine cores or from lupine flour, enzymes are also added to the cooled suspension for starch liquefaction and saccharification. The pH adjustment is generally carried out with potassium bicarbonate.

Description

Technical field

The invention relates to a process for obtaining fiber from lupine husks, lupine kernels or lupine flour.

BACKGROUND OF THE INVENTION

Fiber in the human diet is obtained predominantly by natural means, consumption of fruits, vegetables, cereals, etc. Targeted fiber extraction is usually carried out by drying and grinding fruits and various fruits in which the fiber is richly contained. One of the fruits rich in fiber is lupine, but the method of obtaining fiber alone from these fruits has not been known yet.

It is therefore an object of the present invention to provide a method by which this rich lupine bean fiber content can be obtained while achieving a high shelf life of the product obtained.

SUMMARY OF THE INVENTION

The objective is achieved by the method of obtaining the fiber according to the invention, which consists in mixing the lupine husks, lupine cores or lupine flour with water, adjusting their pH to alkaline with stirring.

pH 8.5, are heated to boiling and the resulting suspension is cooled to 607 ° C, then the protein digestion enzyme is added and the protein is hydrolyzed with stirring to form a solid fiber filter cake which is This method is used in particular in obtaining fiber from lupine skin.

In obtaining fiber from lupine kernels or from lupine flour, enzymes for liquefaction and saccharification of starch are also added to the cooled suspension.

In a preferred embodiment, the pH adjustment is performed with potassium bicarbonate. EXAMPLE 1

The lupine beans were peeled on a peeling machine to obtain a separate shell fraction and a separate core fraction. The core fraction was ground and mixed with 30 parts of core and 70 parts of water, adding potassium bicarbonate to adjust pH to

-2t i t t * <

alkaline pH 8.3 and the mixture was heated to boiling for one hour. Then, the suspension was cooled to 70 (C) and NOVO Alcalase L which was added

Λ performed protein breakdown. After one hour, enzymes BAN LS, AMG 300 L were added to liquefy and saccharify the starch and hydrolyzed the protein with stirring for two hours. After completion of this process, filtration was carried out to separate the solid portion, which is the filter cake, dietary fiber. The obtained filter cake was washed, dried and ground.

The peeled lupine husk fraction was ground and mixed with water at a rate of 30 parts of skin and 70 parts of water and left to stand for 2 hours. The pH was then adjusted to an alkaline pH of 8.3 by addition of potassium bicarbonate while stirring and the mixture was heated to boiling for one hour. Then the suspension was cooled to 70 ° C and NOVO Alcalase L was added to digest the proteins and hydrolyzed the protein with stirring for two hours. After completion of this process, filtration was performed. The solid portion, the filter cake is predominantly coarse fiber. The obtained filter cake was washed, dried and ground.

Lupine flour or defatted lupine flour was prepared as a suspension with water in a ratio of 20 parts of lupine flour to 80 parts of water. After thoroughly mixing and adjusting the pH to an alkaline pH of 8.5 by the addition of potassium bicarbonate, the mixture was heated to boiling for one hour while saponifying the fats. Then the suspension was cooled to 70 ° C and NOVO Alcalase L was added to digest the proteins, as well as BAN LS, AMG 300L enzymes to make the starch liquefied and saccharified. At this temperature, the enzymes were allowed to act for two hours while stirring. After completion of this process, filtration was performed. The solid part, the filter cake is predominantly coarse and dietary fiber. In the liquid phase, hydrolysed protein, saponified fats and liquid starch, which can be decomposed into sugar, leave. * The obtained filter cake is washed, dried and ground.

Claims (3)

PROTECTION REQUIREMENTS CLAIMS 1. A method for obtaining pulp, characterized in that the lupine husks, lupine cores or lupine flour are mixed with water, treated under constant stirring at their pH. U7 f 'to an alkaline range of 8 * 8.5 pH, heated to boiling, the resulting suspension was cooled to < 4 µg / min, 60-70 µC, an enzyme for protein digestion was added and the protein hydrolyzed while stirring to form a solid The fiber filter cake is washed, dried and ground. Process according to claim 1, characterized in that enzymes for liquefaction and saccharification of starch are also added to the cooled suspension at 60 ° C. Method according to claim 1 or 2, characterized in that the adjustment of the pH to the alkaline range of 8 to 8.5 is carried out with potassium bicarbonate.