Method for extracting tannin from tarra bean-pod by micro-wave method

A technology of microwave method and Tara bean powder, which is applied in the direction of organic chemistry, can solve the problems of reducing production costs, many production links, and many extraction times, and achieves the effects of reducing production costs, simple methods, and less extraction time

Inactive Publication Date: 2008-09-17
云天化集团有限责任公司 +1
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  • Abstract
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  • Application Information

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Problems solved by technology

The shortcoming of this method is that extraction frequency is many (up to 2~5 times), and extraction time is long (need 8 hours each time), and extraction adopts steam cooking, and energy consumption is big, and production link is many, and the whole extraction production method flow process is comparatively complicated. Long, high cost, and higher requirements and conditions are put forward for the subsequent processing of active ingredients of tara tannin and the treatment of production wastewater, which is not conducive to reducing production costs and saving energy

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  • Method for extracting tannin from tarra bean-pod by micro-wave method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1 Put 60 kg of Tara bean pod powder into a microwave leaching reactor, and add 480 kg of water. Turn on the stirring, control the stirring speed to 40-60 rpm, the initial temperature is 18°C, start the microwave, control the microwave intensity to 35 W / L, when the temperature of the extract solution rises to 65°C, start timing, and at the same time increase the microwave intensity Set to 15 W / L. After 45 minutes of extraction, the density of the extract was sampled and analyzed to be 1.03.-1.04 g / ml, and the concentration of tannin was analyzed to reach 5.0-7.0% (w / w). Then, it was centrifuged and the filtrate was tara tannin aqueous solution.

Embodiment 2

[0018] Example 2 Put 60 kg of Tara bean pod powder into a microwave leaching reactor, and add 600 kg of water. Turn on the stirring, control the stirring speed to 40-60 rpm, the initial temperature is 18°C, start the microwave, control the microwave intensity to 40 W / L, when the temperature of the extract solution rises to 80°C, start timing, and at the same time increase the microwave intensity Adjust to 20 W / L. After 30 minutes of extraction, the density of the extract is 1.02-1.03g / ml and the concentration of tannin is 3.0-5.0% (w / w) according to sampling analysis, and then centrifuged, and the filtrate is tara tannin aqueous solution.

Embodiment 3

[0019] Example 3 Put 60 kg of Tara bean pod powder into a microwave leaching reactor, and add 300 kg of water. Start the stirring, control the stirring speed to 70-80 rpm, the initial temperature is 18°C, start the microwave, control the microwave intensity to 45W / L, when the temperature of the extract solution rises to 40°C, start timing, and at the same time increase the microwave intensity to 45W / L. Adjust to 20 W / L. After 90 minutes of extraction, the density of the extract is 1.07-1.08g / ml and the concentration of tannin is 8.0-9.0% (w / w) after sampling and analysis.

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Abstract

The invention relates to a method for extracting tannin from tara legume in water or ethanol through microwave radiation with a certain strength. The method includes radiating tara bean flour and water or ethanol at solid to liquid ratio of 1:4-10 with a microwave strength of 15-45 W/L for 30-120 min. for extracting at 40-80 DEG C at a stirring rate of 40-80 rpm, centrifugally separating or vacuum filtering, and collecting the filtrate, i.e., tara tannin solution. The tara bean flour is radiated with microwave to allow tannin polar molecule in the tara bean flour to rapidly enter into the leaching solution. The extraction rate of the tara tannin is greater than 70%. Compared with the conventional cooking method, the microwave extraction method of the tara tannin has the advantages of simple process, high extraction efficiency, energy saving effect, advanced process, high efficiency, short period, good economic and operability.

Description

technical field [0001] The invention relates to a production process for extracting Tara tannin, a bioactive component in Tara plants, by using microwave technology, and belongs to the technical field of biological extraction. Background technique [0002] Tannin is a kind of biologically active polyphenolic substance, which has important uses in chemical industry, medicine, food, ink manufacturing, printing and dyeing and other fields. The traditional method is to extract and isolate the active ingredient of tannin from Tara pods by water extraction. The shortcoming of this method is that extraction frequency is many (up to 2~5 times), and extraction time is long (need 8 hours each time), and extraction adopts steam cooking, and energy consumption is big, and production link is many, and the whole extraction production method flow process is comparatively complicated. Long, high cost, and higher requirements and conditions are put forward for the subsequent processing of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07G17/00C07G99/00
Inventor 曾波李海丽张峻周艳
Owner 云天化集团有限责任公司
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