Screening of saxitoxin in shellfish samples as low as 50ppb in sample Format: 25 tests (12 tests, 12 controls) Filters, syringes, extract collection tubes, buffers Run Time: 30 Minutes
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Screening of saxitoxin in shellfish samples as low as 50ppb in sample
Saxitoxins (STXs) are naturally occurring alkaloids produced by some marine dinoflagellates and by strains of various species of freshwater cyanobacteria. Saxitoxin is one of the prevalent paralytic shellfish toxins (PSTs). It belongs to a family of potent neurotoxins with a molecular weight around 300 Da. Saxitoxin and its derivatives are alkaloids composed of a tetrahydropurine ring system with a highly polar guanidinium group. Due to their significant toxicity, saxitoxins are closely monitored in marine environments where they can accumulate in the food chain during harmful algal blooms (HABs). An action level of 800ppb, or 80ug per 100grams of shellfish, has been established.
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Fecal Swab Collection and Preservation System
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Overview
No need to immediately process samples
Nucleic acid preservation at room temperature over 2 years for DNA and up to 7 days for RNA
Norgen’s Fecal Swab Collection and Preservation System is designed for collection, ambient storage and transport of nucleic acids from stool specimens. The Fecal Swab Collection and Preservation System tubes contain Norgen’s Stool Preservative in a liquid format. The user simply collects the specimen using the provided swab, and then transfers the swab into the Stool Preservative. The Stool Preservative prevents the growth of Gram-negative and Gram-positive bacteria and fungi, and also inactivates viruses allowing the resulting non-infectious samples to be handled and shipped safely. In addition, the Stool Preservative eliminates the need to immediately process or freeze samples and allows the samples to be shipped to centralized testing facilities at ambient temperatures. The components of the Stool Preservative allow samples to be stored at room temperature for over 2 years for DNA and 7 days for RNA. To extend the stool RNA stability in the preservative, storage at -20°C or -70°C is recommended upon arrival at the testing facilities until RNA purification.
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Extracting Biological Insights from Stool
Tips and tricks for isolating high yield and quality DNA, RNA, miRNA and EV’s from fecal samplesDownload for Free
Stability of Stool Nucleic Acids at Room Temperature
2 years for DNA Up to 7 days for RNA*
* The RNA stability will vary depending on the samples
Storage Conditions and Product Stability
The Fecal Swab Collection and Preservation System (Bulk Format) can be stored at room temperature for up to 2 years without any reduction in kit performance. The expiry date for the swabs is written on the swab wrapper.
t-Boc-N-Amido-PEG12-propargyl can participate in copper catalyzed Click Chemistry reactions with biomolecules that contain azide. The t-Boc protected amine can be deprotected under mild acidic conditions. The PEG spacer helps improve the water-solubility of the molecule. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
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t-Boc-N-Amido-PEG12-propargyl can participate in copper catalyzed Click Chemistry reactions with biomolecules that contain azide. The t-Boc protected amine can be deprotected under mild acidic conditions. The PEG spacer helps improve the water-solubility of the molecule. Reagent grade, for research purpose. Please contact us for GMP-grade inquiries.
Attogene’s Montmorillonite Bentonite Clay binds toxins with high affinity and high capacity. Montmorillonite has been shown to be the active ingredient in bentonites. The proposed mechanism of action of Attogene’s Montmorillonite Bentonite Clay is through the adsorption of toxins (mainly onto the interlayer spaces of montmorillonite). Attogene’s Montmorillonite Bentonite Clay is a common anti-caking agent in animal feeds to adsorb aflatoxins and diminish their bioavailability. Its composite for application in drug system can be formed through the utilization of anionic, cationic, and nonionic surfactants.
Bentonite is a promising rock of clay which is found in nature. It is a major source of montmorillonite in nature. It is a rock produced of highly colloidal and plastic clays mainly comprised of montmorillonite. In addition to montmorillonite, bentonite may compose of some amount of crystalline quarz, cristobalite, and feldspar. Montmorillonite nanoclay is used as a drug carrier system and as an additive. Its composite for application in drug system can be formed through the utilization of anionic, cationic, and nonionic surfactants. These are used to improve basal spacing resulting in organo clay to be utilised in drug loading and drug release.
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Promotes flocculation of cyanobacteria cell debris, binds residual phosphate compounds and promotes gradual settling of the cyanobacterial biomass on the sediment.
