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Green synthesis of Chlorin e6 and tests of its photosensitive bactericidal activities

Green synthesis of Chlorin e6 and tests of its photosensitive bactericidal activities
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摘要 Phototoxic treatments of pathogenic bacteria and fungi of trees induce oxidative damage that is preferable to toxic chemical treatment.Here,we used green methods to synthesize Chlorin e6 from chlorophyll a,which was extracted from crude silkworm excrement using concentrated(strong)alkali hydrolysis and acidification.The photosensitive bactericidal activities of the new chlorin were tested in vitro,and possible mechanisms of action are discussed.The results showed that Chlorin e6 can be lightactivated to have bactericidal activity against Escherichia coli,Bacillus subtilis and Fusarium oxysporum,but it had little bactericidal effect in the dark.This kind of chlorin compounds has great potential as a natural phototoxic antimicrobial compound to control harmful bacteria on the leaves in forestry systems. Phototoxic treatments of pathogenic bacteria and fungi of trees induce oxidative damage that is preferable to toxic chemical treatment. Here, we used green methods to synthesize Chlorin e6 from chlorophyll a, which was extracted from crude silkworm excrement using concentrated(strong) alkali hydrolysis and acidification. The photosensitive bactericidal activities of the new chlorin were tested in vitro, and possible mechanisms of action are discussed. The results showed that Chlorin e6 can be lightactivated to have bactericidal activity against Escherichia coli, Bacillus subtilis and Fusarium oxysporum, but it had little bactericidal effect in the dark. This kind of chlorin compounds has great potential as a natural phototoxic antimicrobial compound to control harmful bacteria on the leaves in forestry systems.
出处 《Journal of Forestry Research》 SCIE CAS CSCD 2019年第6期2349-2356,共8页 林业研究(英文版)
基金 supported by Fundamental Research Funds for the Central Universities(No.DL12BA06) Harbin Science and Technology Innovation Talent Research Special Funds(2015RAQXJ002)
关键词 CHLORIN E6 PHOTOSENSITIVE BACTERICIDAL ACTIVITIES Chlorin e6 Photosensitive bactericidal activities
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