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Distribution of solanesol in Nicotiana tabacum

Journal of Forestry Research 2007年第1期18卷 69-72页

作者： ZHAO Chun-jian ZU Yuan-gang LI Chun-ying TIAN Cheng-yu Key Laboratory of Forest Plant Ecology Ministry of Education Northeast Forestry University Harbin 150040 P R. China Heilongjiang tobacco monopoly administration Harbin 150040 P. R. China

solanesol is an important secondary metabolite in Nicotiana tabacum. Distribution of solanesol in Nicotiana tabacum was investigated by High Performance Liquid Chromatography （HPLC） method. The quantitative distribution of solanesol in various organs and tissues of N. tabacum showed that solanesol content, obviously different in all organs, was 6.8, 18.3, 27.5, 45.8, and 68.0 times higher in leaves than that in the stalks, flowers, seeds, fruits and roots, respectively. The contents of solanesol in various parts of leaf, stalk and flower were determined. The content of solanesol in top leaf, middle leaf and bottom leaf gradually decreased （6.124, 5.813 and 5.687 mg.g^-1, respectively） and the content of solanesol in various leaf-parts （leaf apex, leaf middle and leaf base） also gradually decreased. The content of solanesol in top stalk was 1.19 times and 1.92 times higher than that in the middle stalk and the bottom stalk, respectively. The content of solanesol in various tissues of stalk （epidermis, cortex and stele） dramatically decreased. The sepal contained higher concentration of solanesol （1.192 mg·g^-1） compared to any other parts in flower. The study will provide the base data for the regulation and control of solanesol, moreover, it will provide the scientific evidences for the rational development and utilization of N. tabacum resources.

关键词： solanesol Nicotiana tabacum Distribution High Performance Liquid Chromatography

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Isolation of refined solanesol from tobacco extracts by separation integrated technology

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Journal of Chemistry and Chemical Engineering 2009年第12期3卷 23-29页

作者： LIU Ling GU Zheng-gui GU Mei-juan LIN Jun Extraction Engineering Technological Research Center of Nanjing Nanjing Normal University Nanjing 210097 China Research Institute of Development of Chemical Resources along the Yangtze River in Jiangsu Province Nanjing 210097 China

A separation integrated technology for isolating refined solanesol from tobacco extracts was provided. Some experimental installations applied in the separation integrated technology were designed. The experimental installations included saponification and extraction installation, cryogenic centrifugation crystallization installation and continuous midium pressure column chromatography separation installation In the paper, a separation integrated technology route was designed： saponification and extraction-crystallization - silica gel column chromatography-recrystallization. Finally, refined solanesol （-95.5%） was successfully got. The new method featured shorter experimental times, as well as lower solvent consumption, compared with the conventional extraction methods. So it showed great potential for efficient sample preparation and large-scale industrial application in the near future.

关键词： solanesol separation saponification extraction crystallization chromatography

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Effects of Different Wall-breaking Methods on Extraction of solanesol from Stems and Leaves of Potato

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Agricultural Biotechnology 2017年第2期6卷 11-14页

作者： Bingpeng WANG Jing MENG Mei GUO Xinyi HUANG Fangyuan DONG Duolong DI Department of Pharmacy Gansu University of Medicine/Key Laboratory of Chemistry and Quality for Traditional Chinese Medicines of the College of Gansu ProvinceLanzhou 730000China Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China Comprehensive Development Office of Agriculture in Ningxia Au-tonomous Region Yinchuan 750011China

In order to extract solanesol from potato stems and leaves more effectively and improve the extraction rate of solanesol, the same batch of potato stems and leaves harvested from Guyuan, Ningxia was selected as a research object, cell wall of potato stems and leaves was broken by enzymolysis with cellulase and high- speed shearing, and then reflux-extracted with 95% ethanol. solanesol content was determined by HPLC, and extract yield was calculated. Extract yield and solanesol extraction rate was used as an index for comparison of difference between the 2 wall-breaking methods, so as to select the optimal wall-breaking method. The results showed that enzymolysis with cellulase exhibited extraction rate and extract yield of solanesol of 91.38% and 8.02%, respectively, which were better than those under high-speed shear emulsification technique. The enzymolysis wall-breaking method has the advantages of simple operation and strong feasibility.

关键词： Enzymolysis High-speed shearing Potato stems and leaves solanesol

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Recovery of petroleum ether from solanesol extracting solution through vacuum hydrophilic membrane distillation

Recovery of petroleum ether from solanesol extracting soluti...

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The 4th Joint China/Japan Chemical Engineering Symposium

作者： Xinying QU Lin ZHANG Desong TANG Huanlin CHEN*College of Mater. Sci. & Chem. Eng. Zhejiang University Hangzhou 310027 China

This work aims to study the feasibility of vacuum membrane distillation by usinghydrophilic membranes, and the recovery of petroleum ether from the extracting solution ofsolanesol was chosen to investigate. Different with the traditional MD process, hydrophilicmembranes were used for the non-aqueous solutions to avoid the membrane wetting. The VMDperformances of PVDF membrane and two kinds of PAN membranes with different structurewere compared for the solanesol extract under the same operation conditions. The results showedthat the PAN membranes performed very well for the petroleum ether recovery, while the PVDF,which is a popular VMD membrane material, was not appropriate for the non-aqueous solutionssystem. The structures of the membranes were compared to explain the different results for theVMD by PAN1 and PAN2 membranes. The effects of different operating parameters usingdifferent PAN membranes have been investigated to further verify the feasibility of VMD byusing hydrophilic membranes. The results showed that high feed temperatures, low downstreampressures enhanced the permeation flux for both membranes, and the permeation flux of PAN1decreased more greatly than PAN2 under high concentration. It is advisable to work at thedownstream pressure of 20 kPa, the feed temperature of 30oC and the feed flow rate 27.5 ml/s thatpreferentially favor vaporization of petroleum ether and less possibility of membrane wetting.

关键词： hydrophilic membrane distillation solanesol petroleum ether

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Experimental study of refining solanesol from crude solanesol by saponification

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Journal of Chemistry and Chemical Engineering 2008年第4期2卷 53-56页

作者： GU Mei-juan GU Zheng-gui LI Bo，CHEN Qi

The saponification （30%） were studied in this work conditions of crude solanesol The results showed the content of solanesol arrived to 41.9%; the optimal conditions of solanesol saponification were the saponification time of 3 hours, the saponification temperature about 45℃, amount of 2.5g NaOH and amount of 30mL C2H5OH. NEWTON-LAPUSON method was applied to iterate. The correlative equations provide an effective basis for further research of refining solanesol.

关键词： solanesol saponification experiment andcorrelation

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