Ultrasonic and backflow technologies to extract ursolic acid from <em>Eriobotrya japonica</em> leaves

LI Kai-quan; ZHOULan-jiang; ZHANG Ying-hua

Volume 24 Issue 2

Feb. 2017

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LI Kai-quan, ZHOULan-jiang, ZHANG Ying-hua. Ultrasonic and backflow technologies to extract ursolic acid from Eriobotrya japonica leaves[J]. Journal of Zhejiang A&F University, 2007, 24(2): 239-241.

Citation:

LI Kai-quan, ZHOULan-jiang, ZHANG Ying-hua. Ultrasonic and backflow technologies to extract ursolic acid from Eriobotrya japonica leaves[J]. Journal of Zhejiang A&F University, 2007, 24(2): 239-241.

Ultrasonic and backflow technologies to extract ursolic acid from Eriobotrya japonica leaves

1.
Jiangxi Provincial Key Laboratory for Active Ingredients in Natural Medicines, Chemistry& Bioengineering School,Yichun College, Yichun 336000, Jiangxi, China

Funds:

国家高技术研究发展计划(863计划)项目(2002AA2Z3217)

Received Date: 2006-05-24
Rev Recd Date: 2006-11-21
Publish Date: 2007-04-20

Abstract

The conventional methods to extractursolic acid is not satisfied. Ethyl alcohol with ultrasonic waves and backflowwere used to extract ursolic acid from Eriobotrya japonica(loquat) leaves to determine the methods effects. A single raw material source(E. japonica dry leaves) and medium(ethyl alcohol) were filtered,centrifuged, and filtered againwith amicropore filterdiaphragm;then,two differentmethods,ultrasonicwaves and backflow, were used to extract ursolic acid which was quantified using high performance liquid chromatography(HPLC)with the external standard method. The extracting efficiency of ultrasonic waves was 2.63 times greater than hot backflow.The ultrasonicwaveshad unique mechanical,cavitating,and thermal reactions,which increased the speed and penetration of the mediummolecules, thereby enabling greaterextraction of the ursolic acid.[Ch,3fig. 2 tab. 7 ref.]
- botany,
- Eriobotrya japonica(loquat)leaf,
- ultrasonic technology,
- backflowtechnology,
- ursolic acid,
- extract effect

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Ultrasonic and backflow technologies to extract ursolic acid from Eriobotrya japonica leaves

1. Jiangxi Provincial Key Laboratory for Active Ingredients in Natural Medicines, Chemistry& Bioengineering School,Yichun College, Yichun 336000, Jiangxi, China

Funds:

国家高技术研究发展计划(863计划)项目(2002AA2Z3217)

Received Date: 2006-05-24

Rev Recd Date: 2006-11-21

Publish Date: 2007-04-20

Key words:

Abstract: The conventional methods to extractursolic acid is not satisfied. Ethyl alcohol with ultrasonic waves and backflowwere used to extract ursolic acid from Eriobotrya japonica(loquat) leaves to determine the methods effects. A single raw material source(E. japonica dry leaves) and medium(ethyl alcohol) were filtered,centrifuged, and filtered againwith amicropore filterdiaphragm;then,two differentmethods,ultrasonicwaves and backflow, were used to extract ursolic acid which was quantified using high performance liquid chromatography(HPLC)with the external standard method. The extracting efficiency of ultrasonic waves was 2.63 times greater than hot backflow.The ultrasonicwaveshad unique mechanical,cavitating,and thermal reactions,which increased the speed and penetration of the mediummolecules, thereby enabling greaterextraction of the ursolic acid.[Ch,3fig. 2 tab. 7 ref.]

Ultrasonic and backflow technologies to extract ursolic acid from Eriobotrya japonica leaves

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Ultrasonic and backflow technologies to extract ursolic acid from Eriobotrya japonica leaves

1. Jiangxi Provincial Key Laboratory for Active Ingredients in Natural Medicines, Chemistry& Bioengineering School,Yichun College, Yichun 336000, Jiangxi, China

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Ultrasonic and backflow technologies to extract ursolic acid from Eriobotrya japonica leaves

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Ultrasonic and backflow technologies to extract ursolic acid from Eriobotrya japonica leaves

1. Jiangxi Provincial Key Laboratory for Active Ingredients in Natural Medicines, Chemistry& Bioengineering School,Yichun College, Yichun 336000, Jiangxi, China

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