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LI Yan, QIN Yukun, LIU Song, LI Pengcheng, XING Rong'e. Preparation, characterization, and antifungal activity of hymexazol-linked chitosan derivatives[J]. Journal of Oceanology and Limnology, 2017, 35(5): 1079-1085 |
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Preparation, characterization, and antifungal activity of hymexazol-linked chitosan derivatives |
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| LI Yan1,2,3, QIN Yukun1,3, LIU Song1,3, LI Pengcheng1,3, XING Rong'e1,3 |
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1 Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;
2 University of Chinese Academy of Sciences, Beijing 100049, China;
3 Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China |
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| Abstract: |
| In this study, three hymexazol-linked chitosan derivatives (HML-CS) were synthesized and their structures confirmed by Fourier transform infrared and elemental analysis. Linkage ratios were measured by high performance liquid chromatography. The derivatives' antifungal activity against the plant pathogenic fungi Rhizoctonia solani CGMCC 3.28 and Gibberella zeae CGMCC 3.42 were investigated at concentrations of 100, 200, and 400 mg/L. These HML-CS derivatives exhibited stronger antifungal activity than CS alone. HML-CS-1 showed the best antifungal activity against G. zeae, whose antifungal index was 65.9% at 400 mg/L, and also showed the best antifungal activity against R. solani, whose antifungal index was 52.7% at 400 mg/L. This conjugation of CS and HML suggested the presence of synergistic effects between the moieties and indicated that these derivatives possessed great potential as novel fungicides and require further research for the development of applications in crop protection. |
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| Key words:
backward particle-tracking|Bohai Sea|Lagrangian method|giant jellyfish|numerical simulation
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| Received: 2016-04-21 Revised: 2016-06-01 |
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