The PP2A test- OKATEST- suggested as the screening test of choice for Washington State monitoring program.

Escrito por admin el . Posteado en Marine biotoxins, Okatest

A recent study at the Northwest Fisheries Science Center has evaluated the application of screening assays for determination of DST (diarrhetic shellish toxins) in shellfish. A lateral flow test, ELISA and PP2A tests were evaluated and compared with the standard regulatory LC-MS/MS (Eberhart et al, Marine Drugs, 2013). The LC-MS/MS is the reference method for detection of lipophilic toxins since 2011 in the European Union and has been used for public health protection in the State of Washington since 2012. This methodology is expensive, time consuming and requires qualified personal. Eberhart B-T et al. identified the need of rapid and simple methods to perform at remote sites allowing growers to test a pre-harvest shellfish samples to prevent harvesting toxic product. The study suggests that PP2A (OKATEST) may provide a safety buffer for the harvest of large amount of shellfish prior to confirmatory LC-MS/MS. The combination of this rapid methodology with phytoplankton monitoring and LC-MS/MS testing could be a useful tool to maintain open status of shellfish beds.  

ZEULAB attended the AOAC 127th annual meeting in Chicago

Escrito por admin el . Posteado en Uncategorized

Last August 25th ZEULAB attended the AOAC 127th annual meeting in Chicago Illinois. ZEULAB has been attending at this meeting as an exhibitor for the last 3 years, in which there are visitors from all over the world. AOAC offers scientific sessions, roundtables, workshops, and poster presentations to meet a variety of analytical needs. Also brings science-based research from the top scientists in the world, technical information about changes and advances in methodology and access to techniques and applications. AOAC provides a wide range of interactions between industry, government, and academia and hosts a number of special events to provide the venue to meet with other members. ZEULAB presented two posters: Explorer 2.0: a new multi matrix screening test for the analysis of antimicrobial residues in offal (liver and kidney), eggs and feed. Also came up with a new device, e-reader an innovative incubator and reader for the detection of antibiotics in milk. ZEULAB also attended to several scientific sessions, roundtables, workshops and met with other AOAC members. Next year ZEULAB will be exhibiting at the 128th AOAC annual meeting in Boca Raton, Florida. See you in Florida!

Explorer 2.0 and the Food Bank

Escrito por admin el . Posteado en Uncategorized


Nowadays we are living hard times of global crisis so we must show solidarity and help each other. In ZEU we are aware of this, consequently we support a welfare initiative in which we encourage our customers to cooperate with us. ZEU a company committed with food safety will donate 1% of Explorer 2.0 sales to the Food Bank. Every time you test with Explorer 2.0 you are helping the Food Bank cause. Because everyone deserves to have food every day.

For more information:

Marine and Freshwater Toxins Analysis: Fourth Joint Symposium AOAC Task Force Meeting 2013

Escrito por admin el . Posteado en Uncategorized

As in previous editions in Baiona (Spain) Zeulab attended to the Marine and Freshwater Toxins Analysis: Fourth Joint Symposium and AOAC Task Force Meeting, last May 5-9, 2013. The symposium update issues on the field of the analysis of Marine and Freshwater toxins, with special focus on new method developments, method validation efforts, and method implementation, as a joint meeting with the AOAC Task Force on Marine and Freshwater Toxins. Zeulab presented a poster showing different options to implement the PP2A method, OkaTest, for lipophilic toxins monitoring complying with the legal requirements. OkaTest could be used in routine monitoring determining OA-toxins group while LC-MS test for YTX, PTX and AZA. This would reduce the injections by half and so the turnaround time. OkaTest can also be implemented when a OA-bloom has been identified. Labs with large number of samples or limited access to LC-MS equipment could benefit from using both methodologies in combination. A shorter time-around time and low cost per sample could be achieved implementing both methods for routine monitoring of lipophilic toxins. This international symposium brought together experts in the field of biotoxins, from many European countries and other worldwide locations such as Mexico, USA, Canada, Japan, are some of the countries that participated in the symposium. poster ZEU OKatest + LS-MS

Plankton adaptation to warmer oceans.

Escrito por admin el . Posteado en Uncategorized

Phytoplankton carry out around half of all photosynthesis on Earth. They lower CO2 concentrations in the oceans, add oxygen to our atmosphere, and are the basis of most ocean and many freshwater food chains. When they die, phytoplanktons also sequester carbon in the deep ocean as they sink towards the ocean floor. The organisms’ close relationship with CO2 and the carbon cycle means that climate change scientists need to understand how global warming will alter phytoplankton populations. Additionally, ecologists wish to understand phytoplankton to predict the oceans’ future health.

Water temperatures significantly affect the limits of phytoplankton growth rates: populations near the equator have the potential to grow much faster than strains found in cooler waters, near the poles, given sufficient nutrients. The researchers of this study believe that current models underestimate the effects of rising temperatures on ocean ecosystems. Such models focus on indirect mechanisms, such as how rising temperatures lead to fewer nutrients in surface ocean waters. This study therefore investigated the direct effect of higher temperatures on individual phytoplankton species.

The scientists used an eco-evolutionary model to investigate how phytoplankton adapts to current ocean temperatures. They also used species distribution models, to predict how ocean temperature changes would affect populations.

The results suggest that by the end of the 21st century, warmer oceans will lead to a greater diversity of plankton populations nearer the poles, but fewer varieties in warmer, tropical waters at the equator. Even though marine organisms can disperse over long distances carried by ocean currents, each plankton strain grows best at an optimum temperature and adapts to its local environment. Tropical strains appear to be most vulnerable to rising temperatures. The researchers predict that around a third of current strains in the tropics would become extinct by 2100 if mean temperatures increase by just 2°C. However, high genetic diversity within species may prevent the loss of entire species.

Rising temperatures will thus affect phytoplankton in different ways, depending on their location. Until we learn more about how phytoplankton evolves, there is significant uncertainty regarding how these organisms will respond to climate change and to what extent we can rely upon them to remove CO2 from our atmosphere. The future health of the ocean ecosystems that depend on them is also threatened.

Source: European Commission News Alert: Science for Environment Policy

Thomas, M.K., Kremer, C.T., Klausmeier, C.A., and Litchman, E. (2012) A Global Pattern of Thermal Adaptation in Marine Phytoplankton. Science. 338: 1085-1088.