Hu, Tianming

Wang, Quanzhen

Xu, Yamei

English

University of Kentucky

University of Kentucky UKnowledge International Grassland Congress Proceedings XXI International Grassland Congress / VIII International Rangeland Congress Anti‐Microbial Activities of Root Extracts of Cichorium intybus L. Quanzhen Wang Northwest A&F University, China Tianming Hu Northwest A&F University, China Yamei Xu Tibet Agricultural and Animal Husbandry College, China Follow this and additional works at: https://uknowledge.uky.edu/igc  Part of the Plant Sciences Commons, and the Soil Science Commons This document is available at https://uknowledge.uky.edu/igc/21/21-1/14 The XXI International Grassland Congress / VIII International Rangeland Congress took place in Hohhot, China from June 29 through July 5, 2008. Proceedings edited by Organizing Committee of 2008 IGC/IRC Conference Published by Guangdong People's Publishing House This Event is brought to you for free and open access by the Plant and Soil Sciences at UKnowledge. It has been accepted for inclusion in International Grassland Congress Proceedings by an authorized administrator of UKnowledge. For more information, please contact UKnowledge@lsv.uky.edu. 瞯 ]1042　 瞯 　 Multifunctional Grasslands in a Changing World 　 Volume Ⅱ 　Grasslands/Rangelands People and Policies——— Non‐Livestock Amenities of Grasslands/Rangelands ResourcesAnti‐microbial activities of root extracts of Cichorium intybus L .W ang Quanz hen1 倡 Hu Tianming1 Xu Y amei1 ,21 College o f A nimal Sciences , Northwest A & F University , Y angling 712100 , Shaanx i , China , 2 Department o f A nimalHusbandry and Veterinary , T ibet A gricultural and A nimal Husbandry College , L inz hi 8600000 , T ibetKey words : Cichorium intybus L . ,ex tract , anti‐microbial activityAbstract Inhibitory activities of root ex tracts of Cichorium intybus L . extracted by petroleum ether , ethyl acetate and ethanol toseven pathogenic fungi and three pathogenic bacteria were determined in v itro . The preventative and controlling effects of rootex tracts of Cichorium intybus L . on wheat powdery mildew were tested with wheat growing in pots . Extracts by ethanol andethyl acetate were able to inhibit the fungi and bacteria to some extent , and the extract by ethyl acetate to a stronger extentat１０g 爛 L‐１ . The extract by ethyl acetate significantly inhibited mycelium grow ths of wheat fusarium head blight , corn northernleaf blight and Tobacco brown spot at an inhibition rate of more than ８０％ , and spore germinations of wheat root rot , cornnorthern leaf blight , and tobacco brown spot at an inhibition rate of more than ８０％ . The diameters of their inhibition zones toBacillus subtilis and Staphy lococcus aureus reached ２０ .０１mm and １７ .２３ mm , respectively ; their preventative and controllingeffects on wheat reached ５０ .９３％ and ６５ .８２％ , respectively .Main conclusions Gao Yunyan et al and Zhang Bing et al reported that root extracts of Cichorium intybus L . had the effect ofblood sugar and fat reductions , and Chen Lianguan used extract extractums of Cichorium intybus L . roots for charging andperfuming in cigarette manufacturing , but there have been no systematical reports about their anti‐microbial activities . Thestudy presented in the paper indicated that root extracts of Cichorium intybus L . did not only show favorable anti‐microbialactivities to Gibberella zeae and Exserohilum turcicum but also favorable inhibitory effects to Staphy lococcus aureaus andBacillus subtilis . This implied that Cichorium intybus L . had great potential value in the prevention and control of plantdiseases .The study also showed that root extracts of Cichorium intybus L . performed better in in v itro anti‐microbial activity , and theroot extract of Cichorium intybus L . by ethyl acetate had better microbe‐inhibiting effects than the other extracts with itsinhibition rates to Exserohilum turcicum and A lternaria longipes greater than ８０％ . indicating that inhibitory substances ofCichorium intybus L . roots mainly distributed in moderately polarized plant parts and thus further identification and isolation ofthe substances of the extracts from these polarized parts would probably result in the discovery of the substances ofantimicrobial activity and exploitable value . The study was restricted to the study about in vitro effects and the effects in potplanting , so that whether root extracts of Cichorium intybus L . showed these effects in the field , what the action modes andmechanisms of the active gradients in these root extracts and how these active ingredients will be isolated still need furtherresearch and exploration .Fund and acknowledgement Ministry of Since & Technology of Peoples摧 Republic of China , International Cooperation ResearchProject ( No .２００６DFA３３６０) , funded this work . We are grateful to my co‐researcher , associate professor Zhang Chunli , andmy postgraduate students Miss Wu Hongxing , Miss Yang Yali .

Anti‐Microbial Activities of Root Extracts of \u3ci\u3eCichorium intybus\u3c/i\u3e L.

https://uknowledge.uky.edu/cgi/viewcontent.cgi?article=3909&amp;context=igc

Anti‐Microbial Activities of Root Extracts of \u3ci\u3eCichorium intybus\u3c/i\u3e L.

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