𝔖 Bobbio Scriptorium
✦   LIBER   ✦

The involvement of phycocyanin pigment in the photodecomposition of the cyanobacterial toxin, microcystin-LR

✍ Scribed by Peter K. J. Robertson; Linda A. Lawton; Benjamin J. P. A. Cornish

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
86 KB
Volume
03
Category
Article
ISSN
1088-4246

No coin nor oath required. For personal study only.

✦ Synopsis

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 photooxygenation 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.

📜 SIMILAR VOLUMES

Toxicity of the cyanobacterial toxin mic
Toxicity of the cyanobacterial toxin microcystin-LR to rats after 28 days intake with the drinking water
✍ R. Heinze 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 58 KB 👁 1 views

Humans may be exposed to low dosages of the cyanobacterial toxin microcystin-LR ( ) MCLR in the drinking water as a consequence of the lysis of cyanobacteria from contaminated lakes and reservoirs. At present there are no published animal experiments on the toxicity of chemically pure MCLR applied c

On-line solid-phase extraction in microc
On-line solid-phase extraction in microcolumn- liquid chromatography coupled to UV or MS detection: Application to the analysis of cyanobacterial toxins
✍ C. Rivasseau; G. Vanhoenacker; P. Sandra; M.-C. Hennion 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 155 KB 👁 2 views

An on-line technique coupling preconcentration via a microprecolumn Ž . with microcolumn-liquid chromatography micro-LC on a 1-mm inner diameter Ž . i.d. analytical column was investigated. The system was found to be very simple, fast, and efficient for the trace-level determination of some natural

Melatonin receptors in benign prostate e
Melatonin receptors in benign prostate epithelial cells: Evidence for the involvement of cholera and pertussis toxins–sensitive G proteins in their signal transduction pathways
✍ Gilad, Eli; Pick, Elah; Matzkin, Haim; Zisapel, Nava 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 221 KB 👁 3 views

BACKGROUND. Melatonin, the hormone secreted nocturnally by the pineal gland, binds to epithelial cells from the human benign prostate, and can reduce their growth and viability. The possible involvement of GTP binding proteins cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate

ChemInform Abstract: Glycosidase-Catalyz
ChemInform Abstract: Glycosidase-Catalyzed Synthesis of Oligosaccharides: A One-Step Synthesis of Lactosamine and of the Linear B Type 2 Trisaccharide . alpha.-D-Gal-(1 → 3)-β-D-Gal-(1 → 4)-β-D- GlcNAcSEt Involved in the Hyperacute Rejection Response in Xenotransplantation from Pigs to Man and as the Specific Receptor for Toxin A from Clostridium difficile.
✍ G. VIC; CHUONG HAO TRAN CHUONG HAO TRAN; M. SCIGELOVA; D. H. G. CROUT 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 39 KB 👁 2 views