Mussels, oysters, scallops and clams might be ingredients for fine cuisine, but they can also be a recipe for diarrhetic shellfish poisoning (DSP). That’s a gastrointestinal illness people can get if those tasty morsels contain marine toxins.
Now, researchers are reporting in ACS’Journal of Agricultural and Food Chemistry the development of a portable, inexpensive device that can quickly and easily screen freshly caught shellfish for these substances.
DSP is caused by eating shellfish that have accumulated okadaic acid (OA) or related marine toxins. Algal blooms – commonly referred to as “red tides” – can produce these substances, which shellfish can accumulate through filter feeding. Because cooking the shellfish does not destroy the toxins, several regulations are in place to prevent the sale and consumption of tainted shellfish. To comply with these regulations, the current practice is to send samples to labs that use expensive, technically intense and slow tests. Waqass Jawaid and colleagues set out to develop an inexpensive, easy-to-use and portable device that maintained the rigorous testing standards of off-site labs but could quickly test shellfish on boats and at other remote locations.
The researchers adapted a test called a lateral flow immunoassay (LFIA), which is like a home pregnancy test strip.
This LFIA combines simple test procedures with an antibody previously shown to specifically bind to three OA toxins. The small, portable device can accurately screen for presence of these substances in less than 20 minutes on a boat, before it goes further into the supply chain. If the test is positive, then the shellfish would not be sold. If the LFIA readout is negative, then an additional, easy-to-use test could be conducted dockside for “total toxins,” which would include detection of a fourth type of OA.
The Latest on: Diarrhetic shellfish poisoning
via Google News
The Latest on: Diarrhetic shellfish poisoning
- Red tide colours North Van shoreson July 18, 2019 at 12:45 pm
Eating contaminated shellfish can result in paralytic and diarrhetic shellfish poisoning, according to the BC Centre for Disease Control. The colourful tide is generally not harmful to swimmers, Perry ... […]
- John Lindsey: Red tide toxins behind advice about eating shellfishon April 27, 2019 at 6:58 pm
That allows their tissues to accumulate toxins from red tides that can cause diarrhetic shellfish poisoning. According to the Woods Hole Oceanographic Institution website, “Diarrhetic shellfish ... […]
- It’s ‘red tide’ season on the Central Coast. That’s not good if you’re a seafood loveron April 27, 2019 at 3:29 pm
This allows their tissues to accumulate toxins from red tides that can cause diarrhetic shellfish poisoning. According to the Woods Hole Oceanographic Institution website, “Diarrhetic Shellfish ... […]
- Shellfish poisoning alert from fisheries ministryon March 28, 2019 at 2:30 am
THE ministry of fisheries and marine resources issued a warning today (28 March) that oysters and black mussels in the port area near Pelican Point, where many marine culture farms are, tested ... […]
- Shellfish cause sicknesson March 1, 2019 at 10:47 am
A number of people who have eaten mussels during the month of August have developed symptoms of an illness resembling those of diarrhetic shellfish poisoning (DSP), according to the Food Safety ... […]
- Namibia: Oysters and Mussels in Walvis Area Safe Againon August 27, 2018 at 1:59 am
Mussels and oysters from the Walvis Bay area are safe to consume again after recent tests for Diarrhetic Shellfish Poisoning (DSP) were negative. Earlier this month, oyster and mussel samples from the ... […]
- Oysters and mussels in Walvis area safe againon August 26, 2018 at 11:21 pm
MUSSELS and oysters from the Walvis Bay area are safe to consume again after recent tests for Diarrhetic Shellfish Poisoning (DSP) were negative. Earlier this month, oyster and mussel samples from the ... […]
- Namibia: Fisheries Warns Against Poisonous Oyster, Musselon August 15, 2018 at 11:19 am
This caution comes after recent biotoxins tests done on oyster and mussel samples on aquaculture in the said area found the presence of Diarrhetic Shellfish Poisoning (DSP) at a level higher than the ... […]
- Health Warning – Marine Biotoxin in Shellfishon July 3, 2018 at 8:53 pm
... Health Dr Ramon Pink says routine tests on shellfish samples taken from Akaroa Harbour have shown levels of Diarrhetic Shellfish Poisoning (DSP) toxinsabove the safe limit of 0.16 mg/kg set by MPI ... […]
- Health warning for collecting shellfish in Akaroa Harbour liftedon October 26, 2017 at 9:31 pm
It was put in place in July after routine tests showed some shellfish had levels of Diarrhetic Shellfish Poisoning (DSP) toxins above the safe limit. Symptoms from eating toxic shellfish included ... […]
via Bing News