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Degradation of natural toxins by phthalocyanines--example of cyanobacterial toxin, microcystin.

机译:酞菁降解天然毒素-蓝藻毒素微囊藻毒素的例子。

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摘要

Phthalocyanines (Pcs) are promising photosensitizers for use in various branches of science and industry. In the presence of visible light and diatomic oxygen, phthalocyanines can react to produce singlet oxygen, a member of reactive oxygen species able to damage different molecules and tissues. The aim of this study was to investigate the ability of phthalocyanines to degrade natural toxins in the presence of visible light. As the representative of hardly degradable toxins, a group of cyanobacterial peptide toxins--microcystin-LR--was chosen for this study. According to our results, phthalocyanines are able to degrade 61.5% of microcystins within a 48-hour incubation (38% of microcystins was degraded after 24 h and 24% after 12 h of incubation). Although other oxidants like hydrogen peroxide or ozone are able to degrade microcystins within several hours, we assume that by optimizing the spectrum emitted by light source and by changing the absorption characteristics of Pcs, microcystins degradation by phthalocyanines could be more effective in the near future.
机译:酞菁(Pcs)是有前途的光敏剂,可用于科学和工业的各个领域。在可见光和双原子氧的存在下,酞菁可以反应生成单线态氧,这是一种能够破坏不同分子和组织的活性氧物种。这项研究的目的是研究在可见光存在下酞菁降解天然毒素的能力。作为难降解毒素的代表,本研究选择了一组蓝细菌肽毒素-微囊藻毒素-LR。根据我们的结果,酞菁能够在48小时内降解61.5%的微囊藻毒素(24小时后降解38%的微囊藻毒素,在12小时后降解24%)。尽管其他氧化剂(例如过氧化氢或臭氧)能够在数小时内降解微囊藻毒素,但我们认为通过优化光源发出的光谱并通过更改Pcs的吸收特性,酞菁降解微囊藻毒素在不久的将来可能更有效。

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