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Decolorization treatment method of apple dietary fiber

A technology of apple dietary fiber and processing method, which is applied in the directions of food ultrasonic treatment, food preparation, food science, etc., can solve problems such as limited application, and achieve the effects of avoiding ineffective utilization, improving decolorization efficiency, and easy operation.

Active Publication Date: 2015-04-22
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since both ozone and dietary fiber are insoluble in water, it usually takes 6-20 hours of decolorization treatment to make the product color meet people's sensory requirements, which greatly limits the application of this technology in the decolorization of dietary fiber

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of decolorization processing method of apple dietary fiber, comprises the following steps:

[0023] 1) Add the apple pomace into the sodium hydroxide solution with a mass concentration of 5% according to the ratio of material to liquid of 1g:20mL, mix thoroughly to obtain a mixed material liquid, and put it into the reaction container;

[0024] 2) According to the volume ratio of absolute ethanol: mixed material liquid = 1:200, add absolute ethanol into the reaction vessel, stir evenly, pass ozone gas into the reaction vessel at 60°C, and at the same time, at the ultrasonic frequency Under the condition of 50KHz, decolorize for 1.5h to obtain the mixed material liquid after decolorization; wherein, the amount of ozone is passed into 2g of ozone per g of apple pomace per h (2g / g 苹果渣 h);

[0025] 3) Use hydrochloric acid with a mass fraction of 35% to adjust the pH value of the decolorized mixture to neutrality, then centrifuge at 25°C for 10 minutes at a speed of...

Embodiment 2

[0027] A kind of decolorization processing method of apple dietary fiber, comprises the following steps:

[0028] 1) According to the ratio of solid to liquid of 1g:10mL, add apple pomace into sodium hydroxide solution with a mass concentration of 10%, mix thoroughly to obtain a mixed material liquid, and put it into the reaction container;

[0029] 2) According to the volume ratio of propanol solution: mixed material liquid = 1:100, add propanol solution into the reaction vessel, after stirring evenly, pass ozone gas into the reaction vessel at 80°C, at the same time, at the ultrasonic frequency Under the condition of 20KHz, decolorize for 2h to obtain the mixed material liquid after decolorization; wherein, the amount of ozone is passed into 3g of ozone per g of apple pomace per h (3g / g 苹果渣 h);

[0030] 3) Use hydrochloric acid with a mass fraction of 30% to adjust the pH value of the decolorized mixture to neutrality, centrifuge at 30°C for 8 minutes at a speed of 4000r / mi...

Embodiment 3

[0032] A kind of decolorization processing method of apple dietary fiber, comprises the following steps:

[0033] 1) According to the solid-liquid ratio of 1g:40mL, add apple pomace into potassium hydroxide solution with a mass concentration of 15%, mix thoroughly to obtain a mixed material liquid, and put it into the reaction container;

[0034] 2) According to the volume ratio of butanol solution: mixed material liquid = 1:20, add butanol solution into the reaction vessel, after stirring evenly, pass ozone gas into the reaction vessel at 70°C, at the same time, at the ultrasonic frequency Under the condition of 80KHz, decolorize for 0.5h to obtain the mixed material liquid after decolorization; wherein, the amount of ozone is passed into 1g of ozone per g of apple pomace per h (1g / g 苹果渣 h);

[0035] 3) Use hydrochloric acid with a mass fraction of 40% to adjust the pH value of the decolorized mixture to neutral, centrifuge at 20°C for 12 minutes at a speed of 3000r / min, the...

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PUM

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Abstract

The invention discloses a decolorization treatment method of an apple dietary fiber, and belongs to the field of food processing technology. The decolorization treatment method comprises the following steps: 1) adding apple pomace into an alkaline solution, fully mixing evenly, and thus obtaining a mixed material liquid; 2) adding a polar alcohol solution into the mixed material liquid, stirring evenly, then at the temperature of 60-100 DEG C, introducing ozone, and carrying out decolorization treatment under an ultrasonic condition to obtain a decolorized mixed material liquid; and 3) adjusting the pH value of the decolorized mixed material liquid to neutral, then centrifuging, drying, crushing, sieving, and thus obtaining the decolorized apple dietary fiber. The decolorization treatment method can obtain the apple dietary fiber product having good color and luster and according with sensory requirements in the relatively short decolorization time, has the advantages of easy and simple operation and green environmental protection, and is suitable for industrialized enlargement production.

Description

technical field [0001] The invention belongs to the technical field of food processing, and in particular relates to a decolorization treatment method of apple dietary fiber. Background technique [0002] Dietary fiber has the functions of preventing constipation, preventing colon and rectal cancer, improving symptoms of diabetes, lowering blood fat, and facilitating weight loss. It is called the "seventh largest nutrient" and has attracted more and more attention from consumers in recent years. Apple pomace is a by-product of concentrated apple juice processing, which is rich in dietary fiber. During the development and utilization of apple dietary fiber, since the polyphenols in apple pomace are prone to oxidative browning after contacting with oxygen, the dietary fiber is dark brown, which seriously affects its sensory quality and application range, so decolorization treatment is required . Ultrasonic-assisted ozone decolorization is a new green and environmentally frie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L1/277A23L1/308A23L33/22
CPCA23L5/49A23L19/07A23L33/21A23V2002/00A23V2300/48
Inventor 陈雪峰李蕊岑刘宁
Owner SHAANXI UNIV OF SCI & TECH
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