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A method for preparing high-swellable dietary fiber from residue after extraction of mulberry leaves

A technology of dietary fiber and mulberry leaves, which is applied in the field of producing high-swellable dietary fiber, can solve the problems of reduced added value and production wastewater, and achieve the effects of reducing fracture, reducing cost, environmental protection, and shortening production time

Active Publication Date: 2018-03-09
上海天伟质量检测技术服务有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purpose of the present invention is to find a technology for extracting dietary fiber from waste mulberry leaf residues extracted by water or alcohol, which helps to solve the problem of residue treatment after comprehensive utilization of mulberry leaf resources, and overcomes the problem of directly using mulberry leaves as raw materials. Leaves are used as raw materials to extract dietary fiber, such as abandoning the extraction of high-value substances such as flavonoids, polysaccharides, 1-deoxynojirimycin, γ-aminobutyric acid, and mulberry leaf protein in mulberry leaves, which reduces the added value and produces a large amount of acid, The problem of alkali production wastewater

Method used

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  • A method for preparing high-swellable dietary fiber from residue after extraction of mulberry leaves

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Effect test

Embodiment 1

[0033] A method for preparing high-swellable dietary fiber from residues after extraction of mulberry leaves, comprising the following steps:

[0034]1) The mulberry leaf residue after water extraction is dried and crushed through a 40-mesh sieve. Add 5wt% NaOH solution at a ratio of 1:10 (dry weight W / V) and mix evenly. Disperse and stir all around and use a power of 3KW, 20KHz frequency ultrasonic 90min, use a three-legged centrifuge at a speed of 3000rmp for 8min to obtain filter residue;

[0035] 2) After centrifugation, the filter residue is washed with water to neutrality, and centrifuged and dehydrated with a three-legged centrifuge at a speed of 3000rmp for 8 minutes to obtain alkali-washed dietary fiber;

[0036] 3) Add 4wt% hydrochloric acid to the alkali-washed dietary fiber at a ratio of 1:10 (dry weight W / V), control pH = 2, at 80°C, 3000rmp, disperse and stir with 12 knife holes up and down, and use power of 3KW, 20KHz frequency ultrasonic After 60 minutes, use ...

Embodiment 2

[0041] A method for preparing high-swellable dietary fiber from residues after extraction of mulberry leaves, comprising the following steps:

[0042] 1) The mulberry leaf residue after alcohol extraction was dried and crushed through an 80-mesh sieve, then mixed with 4wt% NaOH solution at a ratio of 1:8 (dry weight W / V), mixed evenly, at 70°C, 5000rmp, 18 knife holes up and down Disperse and stir all around, and use a power of 5KW, 15KHz frequency ultrasonic for 60min, and use a three-legged centrifuge at a speed of 3000rmp for 12min to obtain the filter residue;

[0043] 2) After centrifugal filtration, the filter residue is washed with water to neutrality, and centrifuged with a three-legged centrifuge at a speed of 3000rmp for 9 minutes to obtain alkali-washed dietary fiber;

[0044] 3) Add 5wt% hydrochloric acid to the alkali-washed dietary fiber according to 1:8 (dry weight W / V), control the pH=2, at 60°C, 5000rmp, disperse and stir with 18 knife holes, and use power of ...

Embodiment 3

[0049] A method for preparing high-swellable dietary fiber from residues after extraction of mulberry leaves, comprising the following steps:

[0050] 1) After the mulberry leaf residue extracted by water is dried and crushed through a 100-mesh sieve, add 5wt% KOH solution at a ratio of 1:9 (dry weight W / V) and mix evenly. Disperse and stir all around and use a power of 4KW, 18KHz frequency ultrasonic for 45min, and use a three-legged centrifuge at a speed of 3000rmp for 15min to obtain the filter residue;

[0051] 2) After centrifugation, the filter residue is washed with water to neutrality, and centrifuged and dehydrated for 10 minutes at a speed of 3000rmp in a three-legged centrifuge to obtain alkali-washed dietary fiber;

[0052] 3) Add 5wt% hydrochloric acid to the alkali-washed dietary fiber at a ratio of 1:9 (dry weight W / V), control pH = 2, at 70°C, 5000rmp, disperse and stir with 18 knife holes up and down, and use power of 4KW, 18KHz frequency ultrasonic 45min, us...

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Abstract

The invention relates to a method for preparing high-swelling-property dietary fibers from residues generated after folium mori extraction. The method includes the steps that folium mori residue powder generated after water extraction or alcohol extraction is treated with alkali liquor and acid liquor in sequence under the heating, high-speed stirring and ultrasound conditions, and centrifugal filtration is performed; filtered acid-pickled residues are subjected to bleaching and residual fat-soluble matter removing, and then the high-swelling-property dietary fibers are obtained, wherein the swelling property is larger than or equal to 9.0 ml / g, and the water holding ratio is larger than or equal to 250%. By means of the method, waste folium mori residues are disposed and made profitable; by the adoption of an ultrasonic oscillation extraction technology, a micro jet generated under the special mechanical action and cavatition of the technology impacts and shears the surfaces of natural fiber raw materials, dissolution of protein, polysaccharide and other components is accelerated, and production time is shortened; meanwhile, due to the generated heat effect and free radicals, degradation and dissolution of macromolecular substances are accelerated, and the obtained dietary fibers are higher in purity and looser in spatial structure. The concentration of acid and alkali used in the method is low, the usage amount of acid and alkali and the discharge amount of waste acid and alkali are reduced, and resource saving and environment protection are facilitated.

Description

technical field [0001] The invention belongs to the technical field of mulberry leaf extraction, and relates to a method for preparing high-swellable dietary fiber from residues after mulberry leaf extraction. Background technique [0002] Dietary Fiber (DF for short) refers to polymer macromolecular substances composed of cellulose, pectin, hemicellulose and glycoproteins, which are not easily digested and absorbed by the human body. A general term that includes polysaccharides, oligosaccharides, lignin, and related plant matter. It widely exists in a variety of plants and microorganisms, and has gradually been valued by people because of its unique adsorption function on organic matter, anti-cancer effects, reducing the production of secondary bile acids, lowering cholesterol levels, regulating blood sugar levels, and preventing obesity. Dietary fiber is known as the "seventh largest nutrient" after water, protein, fat, carbohydrates, minerals, and vitamins. Nutrition su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L33/21
CPCA23V2002/00A23V2250/5116A23V2300/48A23V2300/24
Inventor 李森原何秋旻王济强赵嵩陈莹
Owner 上海天伟质量检测技术服务有限公司
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