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Tea seed meal superfine grinding and ultrasonic-assisted water-alcohol method for extraction of tea saponin

A technology of ultrafine pulverization and tea saponin, which is applied in chemical instruments and methods, preparation of sugar derivatives, steroids, etc., can solve the problems of restricting the industrial production of tea saponin, long extraction time, poor product quality, etc., and achieve Improve the extraction rate and yield, improve the purity, and enhance the effect of release

Inactive Publication Date: 2014-07-23
汪志强
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, tea saponin is usually extracted from tea dregs by water immersion and solvent extraction. These two methods have many defects such as long extraction time, low yield, poor product quality, and high energy consumption, which limit the industrialization of tea saponin. Production
With the development of technology, ultrasonic extraction, microwave-assisted extraction and other new environmental protection technologies have begun to attract attention. see the report

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Ultrafine pulverizer is used to pulverize the tea meal after the oil has been extracted and sieved through a 500-mesh sieve. Weigh 100g of tea meal powder, then add 800ml of distilled water, and perform ultrasonic assisted extraction for 20 minutes at a constant temperature of 60°C.

[0015] Adjust the ultrasonic frequency to 20kHz and the ultrasonic power to 400w. After the extraction is completed, centrifugal separation, the residue is extracted once with 300ml of water according to the above method, and the two extracts are combined. The flocculant was added at 5% of the extract, left standing to clarify, and the precipitate was removed to obtain the tea saponin extract. Then add 95% ethanol to the tea saponin extract at a volume ratio of 1:0.5, stir evenly, stand for 2h at a constant temperature of 50°C, and centrifuge to obtain the tea saponin extract. The tea saponin extract was concentrated by a rotary evaporator, the ethanol reagent was recovered, the concentrated...

Embodiment 2

[0017] Ultrafine pulverizer is used to superfinely pulverize the tea meal after the oil has been extracted and sieved through a 500-mesh sieve. Weigh 250g tea meal powder, then add 2000ml distilled water, and perform ultrasonic assisted extraction for 20min at a constant temperature of 60°C. Adjust the ultrasonic frequency to 40kHz and the ultrasonic power to 800w. After the extraction is completed, centrifugal separation, the residue is extracted once with 500ml of water according to the above method, and the two extracts are combined. The rest of the implementation steps are the same as those described in Example 1. Finally, 24.57 g of tea saponin was obtained, with a purity of 96.79%. The recovery rate of the obtained tea saponin was 94.1%.

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Abstract

The invention relates to a method using tea seed meal as a raw material for extraction of high purity tea saponin. The method is as follows: using a superfine grinding machine to grind the tea seed meal into tea seed meal powder with a particle size less than 500 mesh, then adding hot water, leaching in certain ultrasonic treatment conditions, then using ethyl alcohol to extract the tea saponin therein, then concentrating, bleaching, and drying to obtain the high purity tea saponin. Compared with the method for extraction of the tea saponin in the prior art, the method has the advantages of simple technical operation, low production cost, short period and high efficiency, the produced tea saponin purity reaches above 95%, and the method is suitable for large-scale popularization and application, can make full use of tea seed resources, and promotes the development of tea industry.

Description

Technical field [0001] The invention relates to a technology for extracting high-purity tea saponin by using tea dregs, and belongs to the field of extraction and separation of natural products. Background technique [0002] Tea saponin, also known as tea saponins, is a five-ring triterpenoid compound containing structural sugars and structural acids extracted from the tea cakes and dregs of various types of tea seeds and oil tea seeds. It is a natural non-ionic surfactant with excellent performance, which can be widely used in the fields of daily chemicals, building materials, textiles, and pesticides, and has high economic value. my country is rich in tea oil, with an annual output of about 150,000 tons of tea oil and about 500,000 tons of tea seed cakes. The residue after further oil extraction of the tea seed cake with an organic solvent is the tea meal. Since tea meal is bitter and toxic, it is basically discarded at present, causing a great waste of resources. Therefore,...

Claims

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Application Information

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IPC IPC(8): C07J63/00C07H15/256C07H1/08
Inventor 汪志强
Owner 汪志强
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