Results 31 to 40 of about 4,671 (208)
A Colorimetric Method for Determination of Saxitoxin
, 1977 Saxitoxin, the paralytic shellfish poison, can be conveniently determined by colorimetry after hydrogen peroxide oxidation and reaction of the resultant guanidine with biacetyl. This colorimetric method has been used to assay saxitoxin quantitatively at
R. M. Gershey +3 more
core +1 more source
Bacterial Production of Saxitoxin
Agricultural and Biological Chemistry, 1988 A bacterium was isolated from the homogenate of Protogonyaulax tamarensis cells cultured in T1 medium containing antibiotics. The culture broth after centrifugation, to remove the cells, and the bacterial cells contained a toxin that could kill mice with signs similar to those of poisoning by paralytic shellfish toxins or tetrodotoxin. The toxin in the
KODAMA, Masaaki +2 more
openaire +2 more sources
Production of antibodies and development of highly sensitive formats of enzyme immunoassay for saxitoxin analysis [PDF]
, 2002 In this paper the production of antibodies against saxitoxin (STX) is described, as is the optimization and comparison of two competitive ELISA formats (direct and indirect) for the detection of this toxin.
Marini, S +21 more
core +1 more source
A Stereocontrolled Synthesis of (+)-Saxitoxin
, 2016 A concise stereoselective total synthesis of (+)-saxitoxin is described. A silver(I)-initiated hydroamination cascade constructs the bicyclic guanidinium ion core from a alkynyl bisguanidine.
Vasudev R. Bhonde (2135209) +1 more
core +1 more source
Toxins, 2022 Marine phycotoxins are organic compounds synthesized by some species of microalgae, which accumulate in the tissues of filter-feeder organisms such as bivalve mollusks.
Francisco Arimatéia dos Santos Alves +7 more
doaj +1 more source
Toxins, 2021 Global warming and eutrophication contribute to formation of HABs and distribution of alien cyanobacteria northward. The current study assessed how alien to Europe Sphaerospermopsis aphanizomenoides and Chrysosporum bergii will co-occur with dominant ...
Ksenija Savadova-Ratkus +6 more
doaj +1 more source
Visible Fluorescence Chemosensor for Saxitoxin [PDF]
The Journal of Organic Chemistry, 2007 Absorption spectra of a number of shellfish extracts have been obtained and reveal prominent absorptions in all samples at 210 and 260 nm and at 325 nm in some of them. These absorptions preclude the use of chromophores with similar absorptions in testing of shellfish samples for paralytic shellfish toxins.
Robert E, Gawley +4 more
openaire +2 more sources
Chemosensors for the Marine Toxin Saxitoxin
, 2016 Eleven anthracylmethyl crown ethers have been synthesized and evaluated as fluorescence sensors for the marine toxin saxitoxin. Fluorescence enhancement data are consistent with a 1:1 binding complex for all crowns. The binding constants are in the range
Robert E. Gawley (1980682) +7 more
core +1 more source
Research progress on extraction and analytical methods for saxitoxin and its congeners
, 2023 Saxitoxin is a potent neurotoxin commonly found in shellfish, produced by dinoflagellate and cyanobacterial blooms in seawater or fresh water. This review dissects the conventional liquid–liquid extraction (LLE) and solid-phase extraction (SPE) and the ...
Mohamad Zain, Nur Nadhirah +10 more
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Toxins, 2018 Previous studies of recreational waters and blue-green algae supplements (BGAS) demonstrated co-occurrence of Aphanizomenon flos-aquae (AFA) and cyanotoxins, presenting exposure risk.
Amber Lyon-Colbert +2 more
doaj +1 more source