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A kind of garlic straw active dietary fiber and its preparation method

A garlic straw and dietary fiber technology is applied in the field of dietary fiber preparation, which can solve the problems of environmental pollution, waste of resources and the like, and achieve the effects of less environmental pollution, low production cost and high soluble dietary fiber content.

Active Publication Date: 2018-04-03
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, after the garlic is harvested, the stalks are thrown away, which not only wastes resources, but also pollutes the environment. Therefore, the demand for the development of garlic stalks is becoming more and more urgent

Method used

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  • A kind of garlic straw active dietary fiber and its preparation method
  • A kind of garlic straw active dietary fiber and its preparation method
  • A kind of garlic straw active dietary fiber and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Raw material pretreatment: garlic straw raw material was dried at 60°C, mechanically crushed and passed through a 60-mesh sieve, and 25 g of straw powder was weighed, and 1000 mL of distilled water was added according to the ratio of material to liquid: 1:40;

[0020] (2) Ultrasonic treatment: the countercurrent feed rate is 60 mL / min, the constant cooling water temperature is 25°C, the total time of circulating ultrasonic is 30 min, the dual-frequency frequency is 28 kHz / 35 kHz for the first 10 min, and the dual-frequency The frequency is 35 kHz / 50 kHz, the ultrasonic power of each probe is 400 W, the ultrasonic working time is 2 s, and the intermittent time is 2 s;

[0021] (3) Enzymatic hydrolysis: adjust the pH of the ultrasonic treatment solution to 6.0, add 5% (E / S) cellulase, enzymatically hydrolyze at 50°C for 3 h, and inactivate the enzyme at 95°C for 10 min after the enzymolysis;

[0022] (4) Alcohol precipitation: add 4 times the volume of 95% ethanol to ...

Embodiment 2

[0026] (1) Raw material pretreatment: garlic straw raw material was dried at 50°C, mechanically crushed and passed through a 60-mesh sieve, and 33.3 g of straw powder was weighed, and 1000 mL of distilled water was added according to the ratio of solid to liquid: 1:30;

[0027] (2) Ultrasonic treatment: The countercurrent feed rate is 80 mL / min, the constant cooling water temperature is 35 °C, the total time of circulating ultrasonic is 30 min, the dual-frequency frequency is always 40 kHz / 50 kHz, and the ultrasonic power of each probe is 500 W, ultrasonic working time 3 s, intermittent time 2 s;

[0028] (3) Enzymolysis: adjust the pH value of the ultrasonic treatment solution to 6.0, add 4% (E / S) compound enzyme of cellulase and protease (10:1), enzymolysis at 50°C for 4 h, after the end of enzymolysis Inactivate the enzyme at 95°C for 10 min;

[0029] (4) Alcohol precipitation: centrifuge the enzymatic solution at 5000 rpm for 15 minutes, add 4 times the volume of 95% etha...

Embodiment 3

[0033] (1) Raw material pretreatment: the garlic straw raw material was dried at 60°C, mechanically crushed and passed through an 80-mesh sieve, and 20 g of straw powder was weighed, and 1000 mL of distilled water was added according to the ratio of material to liquid: 1:50;

[0034] (2) Ultrasonic treatment: countercurrent feed rate was 50 mL / min, constant cooling water temperature was 25°C, total cycle ultrasonic time was 50 min, the dual-frequency frequency was 40 kHz / 50 kHz for the first 25 min, and the dual-frequency frequency for the last 25 min was The frequency is 35 kHz / 50 kHz, the ultrasonic power of each probe is 400 W, the ultrasonic working time is 2 s, and the intermittent time is 2 s;

[0035] (3) Enzymolysis: adjust the pH of the ultrasonic treatment solution to 6.0, add 3% (E / S) cellulase, and enzymatically hydrolyze at 50°C for 5 hours, and inactivate the enzyme at 95°C for 10 minutes after the enzymolysis;

[0036] (4) Alcohol precipitation: After concentrat...

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Abstract

The invention discloses a garlic straw active dietary fiber and a preparation method thereof, and belongs to the technical field of dietary fiber preparation. The preparation method comprises the following steps: taking garlic straws as the raw material, then baking, grinding, and sieving the garlic straws, adding distilled water into the processed garlic straw according to a certain material / liquid ratio, then subjecting the garlic straw suspension to a temperature-constant circulation ultrasonic treatment at a low temperature by adjusting different dual-frequency combinations, adding a catalytic enzyme to decompose and modify garlic straw dietary fibers, and subjecting enzymatic hydrolysate to steps of ethanol precipitation, centrifugation, and drying / compounding so as to obtain the garlic straw active dietary fiber product. The product has the characteristics of high content of soluble dietary fibers, good water absorbing property, high expanding force, and strong antioxidant performance.

Description

technical field [0001] The invention relates to a food nutritional component, in particular to a garlic straw active dietary fiber and a preparation method thereof, belonging to the technical field of dietary fiber preparation. Background technique [0002] Dietary fiber (DF) is a general term for a class of carbohydrates that cannot be digested and absorbed by the small intestine of the human body, but can be partially or completely fermented in the large intestine. It is called the seventh nutrient. . Dietary fiber is divided into insoluble dietary fiber (insoluble dietary fiber, IDF) and soluble dietary fiber (soluble dietary fiber, SDF), both of which have different physiological functions in the human body. IDF mainly includes cellulose, hemicellulose and lignin, etc., which can absorb water, stimulate the intestinal tract to produce mechanical peristalsis, accelerate defecation, and reduce the risk of intestinal cancer; while SDF plays more metabolic functions, such a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L33/21
CPCA23V2002/00A23V2200/30
Inventor 黄六容马海乐张勋发
Owner JIANGSU UNIV
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