The Involvement of Phycocyanin Pigment in the Photodecomposition of the Cyanobacterial Toxin, Microcystin-LR
The Involvement of Phycocyanin Pigment in the Photodecomposition of the Cyanobacterial Toxin, Microcystin-LR
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DOI：
10.1002/(sici)1099-1409(199908/10)3:6/7
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发表时间：
1999-08
影响因子：
1.5
通讯作者：
Peter K. J. Robertson;L. Lawton;Benjamin J P A Cornish
中科院分区：
文献类型：
--
作者：
Peter K. J. Robertson;L. Lawton;Benjamin J P A Cornish
在研究通过半导体荧光技术在藻蓝蛋白色素存在下对蓝藻肝毒素微囊藻毒素-LR的破坏时，很明显色素催化毒素分解。探讨了藻蓝蛋白通过单线态氧和超氧化物攻击作为光氧化增敏剂的机制。获得了藻蓝蛋白的吸收光谱和荧光光谱，并计算了激发态的性质。建立的光氧化敏化剂玫瑰红也被用来作为催化剂的光解微囊藻毒素-LR的分解，以帮助阐明的分解机制。
While investigating the destruction of the cyanobacterial hepatotoxin microcystin-LR in the presence of phycocyanin pigment via semiconductor photocatalysis, it became apparent that the pigment was catalysing the toxin decomposition. The mechanism of this process in terms of phycocyanin acting as a photo-oxygenation sensitizer via singlet oxygen and superoxide attack is explored. The absorption and fluorescence spectra of phycocyanin have been obtained and data on the properties of the excited state calculated. The established photo-oxygenation sensitizer rose bengal was also used as a catalyst for the photolytic decomposition of microcystin-LR to help elucidate the decomposition mechanism.