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Induction of volatile organic compounds.of Lycopersicon esculentum Mill. and Its Resistance to Botrytis cinerea Pers. by Burdock Oligosaccharide

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Journal of Integrative Plant Biology 2006年第5期48卷 550-557页

作者： Pei-Qing He Li Tian Kao-Shan Chen Lin-Hua Hao Guang-You Li First Institute of Oceanography State Oceanic Administration Qingdao 266061 China Qingdao University of Science and Technology Qingdao 266061 China Shool of Life Sciences Shandong University Jinan 250100 China

In the present study, we investigated the induction of volatile organic compounds.（VOCs） of Lycoperslcon esculentum Mill. and its resistance to Botrytis cinerea Pers. by burdock oligosaccharlde. The disease severity of L. esculentum was evaluated 48 h after treatment with 0.6% burdock oligosaccharlde, followed by inoculation with a spore suspension of B. cinerea. The formation of O2＇, the activity of lipoxygenases （LOX）, peroxidase （POD）, cataiase （CAT）, and superoxide dismutase （SOD）, and the quantity and quallty of changes In VOCs were determined a period of time after treatment with 0.6% burdock ollgosaccharide. The results demonstrated that the disease index in treated plants was decreased by 42.5% compared with control 96 h after Inoculation. The production of O2＇ reached a maximum 6 h after treatment （1.36-fold compared with control）. There was an increase in LOX, POD, CAT and SOD activity in response to burdock oligosaccharide treatment and the enzymes showed different trends in the time-course of induction. At 120 h after treatment, （E）-2-hexenal was increased by 92% compared with control, whereas methyl salicylate showed a gradual Increase with induction period. Previous results had demonstrated that chitosan elicitor enhanced the production VOCs of L. esculentum and decreased plant susceptibility towards B. clnerea. Together, these findings suggest that increasing the production of VOCs in response to burrdock oligosaccharide may be an important mechanism for L. esculentumin its defense against pathogens, in addition, burrdock oligosaccharlde may act as a potent elicitor of resistance to disease in L. esculentum.

关键词： burdock oligosaccharide induction Lycopersicon esculentum resistance volatile organic compounds.

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PREPARATION OF CUOγ-Al2O3 CATALYSTS FOR CATALYTIC COMBUSTION VOCS VIA PLASMA

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Chinese Journal of Reactive Polymers 2005年第Z1期 14-21页

作者： GUO Jianguang LI Zhong XI Hongxia XIA Qibin Research Institute of Chemical Engineering South China University of Technology, Guangzhou 510640, China

CuOγ-Al2O3 catalysts were prepared by plasma treatment and conventional impregnation methods. The catalytic combustion of two kinds of volatile organic compounds.(VOCs), toluene and benzene, were carried out over these CuOγ-Al2O3 catalysts. The surface properties of these catalysts were characterized by X-ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). The experimental results showed that in catalytic combustion the activity of the CuOγ-Al2O3 catalyst prepared via plasma was much higher than that of the CuOγ-Al2O3 catalyst prepared by conventional impregnation method. XRD results showed that an enhanced dispersion had been achieved with the plasma treatment. SEM results indicated that the size became much smaller and the surface became more uniform with the plasma treatment.

关键词： Plasma Catalyst Catalytic combustion volatile organic compounds.

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DESORPTION OF VOCs FROM POLYMERIC ADSORBENTS UNDER MICROWAVE FIELD

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Chinese Journal of Reactive Polymers 2001年第2期10卷 127-133页

作者： LI Xiang LI Zhong WANG Huan XI Hongxia College of Chem. Eng. South China University of Technology Guangzhou 510640 P. R.China

Desorption of volatile organic compounds.(VOCs) from polymeric adsorbents by microwave was investigated experimentally. Two kinds of organic compounds. benzene and toluene, were separately used as adsorbates in this work. Results showed that the application of microwave to regenerate the polymeric adsorbents not only can get higher regeneration efficiency in comparison with the use of heat regeneration, but also make the temperatures of the fixed beds much lower than that when using the heat regeneration. The weaker the polarity of a polymeric adsorbent, the easier its regeneration was.

关键词： Microwave Desorption Polymeric adsorbents volatile organic compounds.

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PREPARATION OF CUOγ-Al_2O_3 CATALYSTS FOR CATALYTIC COMBUSTION VOCS VIA PLASMA

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Chinese Journal of Reactive Polymers 2005年第1期14卷 14-21页

作者： GUO Jianguang LI Zhong XI Hongxia XIA Qibin Research Institute of Chemical Engineering South China University of Technology Guangzhou 510640 China

关键词： Plasma Catalyst Catalytic combustion volatile organic compounds.

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