CN1151258A

CN1151258A - Method for prodn. of modified oats fibre powder

Info

Publication number: CN1151258A
Application number: CN96112376A
Authority: CN
Inventors: 马晓凤; 张兴
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-10-11
Filing date: 1996-10-11
Publication date: 1997-06-11

Abstract

A modified oats fibre powder is made up of oats bran or oats bran (90-95 Wt.%) and one of buckwheat bran, bean bran and wheat bran (5-10 Wt.%) through preselecting, wetting, extrusion puffing and crushing, and features high content and quality of edible fibre, obvious effect on reducing fat and improved eating enjoyment.

Description

The preparation method of modified oat fiber powder

The present invention relates to a kind of preparation method of modified oat fiber powder.

Dietary fiber has important function such as the cholesterol of reduction, regulation and control hyperglycaemia, defaecation, the organic harmful substance of absorption, the industrial pigment toxicity of prevention, is the important component part of the functional food of present increased popularity.And dietary fiber mainly is present in the wheat bran of cereal or beans, and especially oat bran contains high-quality dietary fiber.But because the edible sense of taste of oat bran is relatively poor and exploitation lags behind, oat bran is mainly used in feed, forms waste greatly.

In recent years, people are good in order to obtain mouthfeel, and the food additives that dietary fiber content is high have worked out some processing methods.Preparation technology as the CN1021539C patent disclosure.It is primary raw material that this technology is mainly selected cereal for use, and handles through high pressure high temperature vapor, and then expanded again pulverizing makes proteinaceous dietary fiber flour.Because the raw material of this technology is full soya bean, full oat, full corn etc., therefore there is shortcomings such as dietary fiber content is low, processing technology complexity.

The purpose of this invention is to provide a kind of utilize physical method handle wheat bran and obtain be rich in high-quality dietary fiber, lipid-lowering effect is obvious, mouthfeel good, the preparation method of the simple modified oat fiber powder of processing technology.

The technical solution used in the present invention is for achieving the above object:

A kind of preparation method of modified oat fiber powder, be raw material with the oat bran or be 90-95% (percentage by weight) with the oat bran, at least add a kind of in the buckwheat bran, bean flour wheat bran, wheat bran of 5-10% (percentage by weight) and be raw material, through 24 mesh sieve preliminary election granularities, make rejection be not less than 25%; Adopt then while spraying water that stirring method makes the raw material water content reach 12-14%, leave standstill fully soak into more than 12 hours after, put it in the twin (double) screw extruder, carry out extrusion when the control operating temperature is 140-160 ℃; Pulverize with micronizer more at last, cross 80 mesh sieves, promptly make modified oat fiber powder.

Handle through above modification, the histocyte wall in the oat bran breaks, and bound active principle is released, and physiologically active is improved in a large number, and lipid-lowering effect is more obvious.Through zoopery, in the rat high cholesterol diet, add 10% original oat bran and modified oat fiber powder respectively, through around measure four blood lipids index after feeding, modified oat fiber powder has significant more fat-reducing effect: serum cholesterol low 152%, triglyceride low 10.2%, harmful low-density lipoprotein is low by 19.4%, and useful HDL is high by 40.9%.

The present invention compares with background technology, has following advantage:

1, turns waste into wealth:, improve the economic worth of wheat bran because raw material of the present invention is a wheat bran, thereby can make a large amount of milling by products be fully utilized;

2, simple, the easy operating of technology: because the present invention adopts the technology of the direct infiltration of raw material just being carried out extrusion, saved the steam treated and dry two step process of HTHP, thereby, make the processing technology easy operating, and reduced production cost;

3, dietary fiber quality better: raw material of the present invention through physical modification processes such as high temperature, high pressure, expanded, ultramicro grinding after, improved the structure of common oats fibre effectively, it is cellular to make its surface be remarkable hole, and increased the content of soluble dietary fiber, also improved simultaneously the mouthfeel and the local flavor of wheat bran processed goods, be easy to the user and accept.

The present invention is described in further detail below in conjunction with embodiment.

Embodiment 1: the byproduct oat bran with oat flour processing factory is a raw material, through 24 mesh sieve preliminary election granularities, make rejection be not less than 25%, stir while spraying water then, make the raw material water content reach 14%, leave standstill it is fully soaked into after, put it in the twin (double) screw extruder, carry out extrusion when control extruding operating temperature is 150 ℃, use micronizer to pulverize at last, cross 80 mesh sieves, promptly make modified oat fiber powder.

Embodiment 2: the oat bran based on 90% (weight percent meter, as follows), and the foster wheat bran skin of interpolation 10% is a raw material, through 24 mesh sieve preliminary election granularities, make rejection be not less than 25%, stir while spraying water then, make the raw material water content reach 12%, left standstill 14 hours, after fully soaking into, put it in the twin (double) screw extruder, the control operating temperature is 140 ℃, carries out extrusion, pulverizes with micronizer at last, cross 80 mesh sieves, promptly make modified oat fiber powder.

Embodiment 3: the oat bran based on 95%, and the bean flour wheat bran of interpolation 5% is a raw material, through 24 mesh sieve preliminary election granularities, make rejection be not less than 25%, stir while spraying water then, make the raw material water content reach 13%, left standstill 16 hours, after fully soaking into, put it in the twin (double) screw extruder, the control operating temperature is 160 ℃, carry out extrusion, pulverize with micronizer at last, cross 80 mesh sieves, promptly make modified oat fiber powder.

Embodiment 4: the oat bran based on 93%, and the wheat bran of interpolation 7% is a raw material, through 24 mesh sieve preliminary election granularities, make rejection be not less than 25%, stir while spraying water then, make the raw material water content reach 13.5%, left standstill 13 hours, after fully soaking into, put it in the twin (double) screw extruder, the control operating temperature is 155 ℃, carry out extrusion, pulverize with micronizer at last, cross 80 mesh sieves, promptly make modified oat fiber powder.

Claims

1, a kind of preparation method of modified oat fiber powder, it is characterized in that: be raw material with the oat bran or be 90-95% (percentage by weight) with the oat bran, at least add a kind of in the buckwheat bran, bean flour wheat bran, wheat bran of 5-10% (percentage by weight) and be raw material, through 24 mesh sieve preliminary election granularities, make rejection not be not less than 25%; Adopt then while spraying water that stirring method makes the raw material water content reach 12-14%, leave standstill fully soak into more than 12 hours after; Put it in the twin (double) screw extruder, carry out extrusion when controlling operating temperature, pulverize with micronizer more at last, cross 80 mesh sieves, promptly make modified oat fiber powder for 140-160%.