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Purple sweet potato dietary fibers and preparation method thereof

A dietary fiber, purple potato technology, applied in food preparation, food science, application and other directions, can solve the problem of not finding purple potato dietary fiber patent documents and other issues

Inactive Publication Date: 2015-06-10
贵州省紫薏生物科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] After searching, no relevant patent documents were found to make purple potato dietary fiber from purple potato materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of preparation method of purple sweet potato dietary fiber of the present invention comprises the following steps:

[0020] (1) After cutting the purple sweet potato into pieces, add water and boil for 15 minutes. The amount of water added is 4 times the weight of the purple sweet potato. After boiling, cool to 70°C. During the cooling process, mash the purple sweet potato in water to obtain a purple sweet potato solution;

[0021] (2) Add 5% amylase relative to the weight of purple potato to the purple potato solution obtained in step (1), stir for 1.5 hours to liquefy the starch, and cool to 40°C;

[0022] (3) Add 3% neutral protease relative to the weight of purple sweet potato to the purple sweet potato solution hydrolyzed by amylase, and stir for 1.5 hours to dissolve the protein;

[0023] (4) The solution obtained in step (3) is subjected to centrifugation for solid-liquid separation;

[0024] (5) drying the solid obtained in step (4) in an oven until the ...

Embodiment 2

[0027] A kind of preparation method of purple sweet potato dietary fiber of the present invention comprises the following steps:

[0028] (1) Cut the purple sweet potato into pieces and add water to boil for 18 minutes. The amount of water added is 4 times the weight of the purple sweet potato. After boiling, cool to 72°C. During the cooling process, mash the purple sweet potato in water to obtain a purple sweet potato solution;

[0029] (2) Add 7% amylase relative to the weight of purple potato to the purple potato solution obtained in step (1), stir for 1.2 hours to liquefy the starch, and cool to 43°C;

[0030] (3) Add 4% neutral protease relative to the weight of purple sweet potato to the purple sweet potato solution hydrolyzed by amylase, and stir for 1.2 hours to dissolve the protein;

[0031] (4) The solution obtained in step (3) is subjected to centrifugation for solid-liquid separation;

[0032] (5) Dry the solid obtained in step (4) in an oven until the water conte...

Embodiment 3

[0035] A kind of preparation method of purple sweet potato dietary fiber of the present invention comprises the following steps:

[0036] (1) Cut the purple sweet potato into pieces and add water to boil for 20 minutes. The amount of water added is 4 times the weight of the purple sweet potato. After boiling, cool to 75°C. During the cooling process, mash the purple sweet potato in water to obtain a purple sweet potato solution;

[0037] (2) Add 8% amylase relative to the weight of purple potato to the purple potato solution obtained in step (1), stir for 1 hour to liquefy the starch, and cool to 45°C;

[0038] (3) Add 5% neutral protease relative to the weight of purple sweet potato to the purple sweet potato solution hydrolyzed by amylase, and stir for 1 hour to dissolve the protein;

[0039] (4) The solution obtained in step (3) is subjected to centrifugation for solid-liquid separation;

[0040] (5) drying the solid obtained in step (4) in an oven until the water content ...

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Abstract

The invention discloses purple sweet potato dietary fibers and a preparation method thereof. The preparation method comprises the following steps: (1) dicing purple sweet potatoes, adding water, boiling for 15-20 minutes, cooling to 70-75 DEG C, smashing the purple sweet potatoes in water in the cooling process so as to obtain a purple sweet potato solution; (2) adding amylase with the first allocated quantity into the purple sweet potato solution, stirring so as to enable the starch to be liquefied, and cooling to 40-45 DEG C; (3) adding neutral protease with the second allocated quantity in the purple sweet solution hydrolyzed by the amylase, and stirring so as to enable the protein to be dissolved; (4) carrying out centrifugal solid-liquid separation on the obtained solution in the step (3), (5) baking the solid obtained in the step (4) until the water content is below 5%; and (6) crushing the solid obtained after drying so as to obtain the purple sweet potato dietary fiber product. According to the invention, the purple sweet potato dietary fibers are prepared by taking the purple sweet potatoes as raw materials, and the properties of the purple sweet potato can be developed fully, and the prepared purple sweet potato dietary fiber product has the health efficacy of purple sweet potatoes.

Description

technical field [0001] The invention relates to the field of functional food and its processing, in particular to a purple sweet potato dietary fiber and a preparation method thereof. Background technique [0002] Purple potato is also called black potato, and the potato flesh is purple to dark purple. It is rich in protein, starch, pectin, cellulose, amino acids, vitamins and various minerals, as well as selenium and anthocyanins. Purple sweet potato is rich in nutrition and has special health care functions. Purple sweet potato is rich in cellulose, which can increase the volume of stool, promote gastrointestinal motility, clean up mucus, gas and spoilage retained in the intestinal cavity, and discharge toxic substances and carcinogens in the stool. Keep the stool unblocked, improve the environment of the digestive tract, and prevent the occurrence of gastrointestinal diseases. Dietary fiber is an acidic polysaccharide in purple sweet potato. It has a slightly sour taste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/308A23L1/214A23L33/22
Inventor 杨延宏
Owner 贵州省紫薏生物科技有限责任公司
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