Comprehensive utilization process for gingko episperm

A technology of Ginkgo biloba testa and technology, which is applied in the direction of Ginkgo biloba medical raw materials, drug combinations, biofuels, etc., can solve the problems of undiscovered Ginkgo biloba comprehensive utilization technology, etc., to achieve protection safety and sufficient supply , the effect of promoting development

Inactive Publication Date: 2006-04-26
JIANGNAN UNIV
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Problems solved by technology

[0004] After the novelty search, the existing literatures are all testing Ginkgo testa polysaccharides, flavonoids, and phenolic acids at the laboratory level, and no reports on the comprehensive utilization of Ginkgo testa

Method used

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  • Comprehensive utilization process for gingko episperm

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Experimental program
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Effect test

Embodiment 1

[0037] 1 ton of fresh ginkgo fruit is immersed in 1.5 tons of water, soaked at room temperature for 24 hours, and mechanically peeled to obtain 0.30 tons of ginkgo fruit and 0.70 tons of outer testa. Mix the testa and water in a mass ratio of 1:1, process it with a homogenizer, adjust the pH to 4.5 with 10% HCl, heat up to 50°C with steam, add acid cellulase at 4 U / ml feed solution, and stir the enzyme Solution 4 ~ 5h. The homogenized and enzyme-treated solid-liquid mixture is processed by plate and frame filter press or centrifuge to separate the solid and liquid to obtain 0.9 tons of milky white filtrate and 0.50 tons of filter residue. After the filtrate is sterilized, add molasses to control the initial sugar concentration at 15%, inoculate the active dry yeast according to the inoculation amount of 10%, the temperature is 30°C, and the fermentation time is 40-50h. The volume fraction of ethanol produced after fermentation is 3%-5%. The fermented liquid is concentrated a...

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Abstract

The comprehensive gingko outer seed coat utilizing process belongs to the field of gingko processing technology. Of the fresh gingko outer seed coat as material, the components capable of being fermented are water extracted as the fermentation culture medium and is fermented and extracted to produce alcohol, and the residue after water extraction is leached with 80 % concentration alcohol solution as the leaching solvent. The leached liquid is vacuum concentrated, separated and purified with macroporous resin LSA-21 and silica gel column successively to obtain gingko phenonic acid and similar matter in purity over 90 %. The present invention is significant in utilizing gingko resource and protecting ecologic environment.

Description

technical field [0001] The invention relates to a technique for comprehensively utilizing the outer testa of ginkgo, which belongs to the technical field of ginkgo processing. Background technique [0002] Ginkgo biloba (ginkgo biloba L.) is a plant of the genus Ginkgo biloba, also known as Gongsun tree and ginkgo tree. It is a unique tree species in my country and a precious medicinal plant resource with a long history in the world. Extensive research has been done on the chemical components and applications of ginkgo leaves and ginkgo at home and abroad. The results show that the leaves, fruits and outer testa all have medicinal development value. Many countries are committed to the development of ginkgo products. my country is a big ginkgo planting country, with ginkgo resources accounting for about 70% of the world's total. It is a big country in the production and export of ginkgo leaf extracts. Jiangsu Province is now planting 20 million ginkgo trees, with a production...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/06A61K36/16A61P11/06A61P11/10C07D311/30C07D493/22
CPCY02E50/10
Inventor 田亚平夏泽华尤文元李彧娜江龙法杨海麟
Owner JIANGNAN UNIV
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