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Synthesis of atrazine-HPCD inclusion and its bioactivity |
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| Authors: | Zhang Jinyan Li Bin Bi Hongmei Zhang Ping |
| Institution: | 1. Material Science and Engineering College, Northeast Forestry University, Harbin 150040, China;College of Science, Heilongjiang Bayi Agricultural University, Daqing 163319, China 2. College of Science, Northeast Forestry University, Harbin 150040, China 3. College of Science, Heilongjiang Bayi Agricultural University, Daqing 163319, China |
| Abstract: | The inclusion of atrazine with 2-hydroxypropyl-β-cyclodextrin (HPCD) was synthesized by ultrasonic method, and it was characterized by UV, XRD and 1H NMR. The solubility in water and the bioactivity of the inclusion were also studied here. The results indicated that the UV maximum absorption wavelength of the inclusion remained at 223 nm, while its intensity decreased. The XRD peaks of atrazine disappeared, weakened and shifted in the inclusion, and the chemical shift of H-3 and H-5 of cyclodextrin inner cavity led to the upfield. The characterization data showed that the atrazine-HPCD inclusion had already formed. At the same time, the solubility of the atrazine-HPCD inclusion in water became 20.08 times as that of atrazine. Moreover, the atrazine-HPCD inclusion had better herbicidal activity. When the concentration of the inclusion was 6.5 mg/mL, the inhibition ratios of the inclusion to taproot length, taproot fresh weight, sprout length and sprout fresh weight of barnyard grass were 66.96%, 57.22%, 70% and 57.53%, respectively, which were all higher than those of atrazine. |
| Keywords: | atrazine 2-hydroxypropyl-β-cyclodextrin (HPCD) inclusion synthesis bioactivity |
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