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Preparation technology for extracting water-insoluble dietary fiber by use of tea leaves

A soluble dietary fiber and preparation technology, applied in the preparation of water-insoluble dietary fiber, using tea residue to extract water-insoluble dietary fiber preparation field, can solve the problem of no water-insoluble dietary fiber, etc.

Inactive Publication Date: 2013-05-15
SUZHOU GULI BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] But there is no report on preparing water-insoluble dietary fiber with tea dregs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: The tea leaves are superfinely pulverized, and the pulverized particle size reaches 95% and passes through 250 meshes. The superfine powder is mixed with 1% hydrochloric acid at a ratio of 2%, stirred for 24 hours, filtered, supernatant is taken, concentrated, and immersed in 1% hydrochloric acid. Dialyze in hydrochloric acid for 24 hours, take the dialyzed fluid, freeze-dry, and obtain it.

Embodiment 2

[0017] Example 2: The tea leaves are ultrafinely pulverized, and the pulverized particle size reaches 95% and passes through 350 meshes. The superfine powder and 2% nitric acid are mixed according to a ratio of 10%, stirred for 24 hours, filtered, supernatant is taken, concentrated, and immersed in 2% nitric acid Dialyze in nitric acid for 24 hours, take the dialyzed fluid, freeze-dry, and obtain it.

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Abstract

The invention relates to a preparation technology for extracting water-insoluble dietary fiber by use of tea leaves, and relates to the field of extracting water-insoluble dietary fiber by the use of tea leaves. The preparation technology comprises the following steps of: (1) performing superfine grinding on the tea leaves until the tea leaves with the particle size of 250-350 meshes account for 95%; (2) mixing the superfine powder with 1-2% dilute acid according to a proportion of 2-10%, and stirring for 24 hours; (3) filtering, taking supernate and concentrating; (4) soaking in 1-2% dilute acid and dialyzing for 24 hours; (5) taking the dialysis external liquid; and (6) freeze-drying to obtain the water-insoluble dietary fiber. The preparation technology provided by the invention has the beneficial effects that the content of water-insoluble dietary fiber in the prepared tea water-insoluble dietary fiber product is 92.1%, and the product yield is 20.11%.

Description

[0001] Involved areas: [0002] The invention relates to the field of preparation of water-insoluble dietary fiber, in particular to the field of preparation of water-insoluble dietary fiber extracted from tea dregs. technical background: [0003] my country's tea tree cultivation area and tea output rank first in the world. At present, the deep processing of middle and low-grade tea is mainly to extract tea polyphenols, polysaccharides and water extracts. Most of the tea dregs are discarded as garbage, and the water-insoluble dietary fiber is not fully utilized. One of the main components, tea water-insoluble dietary fiber is prepared by extraction, which can significantly increase the economic added value while realizing the comprehensive utilization of tea dregs. [0004] Dietary fiber refers to the sum of edible plant components carbohydrates and similar substances that can inhibit digestion and absorption in the small intestine of the human body and can be parti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23L1/308
Inventor 吴娟
Owner SUZHOU GULI BIOTECH
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