5 documents found, page 1 of 1
Molecularly imprinted polymer-based sensor for the determination of 2,4-dinitro...
Torre, Ricarda; Rebelo, Patrícia; Seguro, Isabel; Pacheco, João G.; Amaral, Joana S.; Nouws, Henri P.A.; Delerue-Matos, CristinaThe rising demand for weight-loss solutions, driven by obesity concerns and societal pressure, has led to an increasing growth in both the consumption and market of food supplements. However, several studies have identified food supplements as common targets of economically motivated adulteration by the addition of pharmaceutical drugs to enhance the product's effects. Despite its toxicity and associated health...
Food allergen control: Tropomyosin analysis through electrochemical immunosensing
Torre, Ricarda; Freitas, Maria; Costa‐Rama, Estefanía; Nouws, Henri; Delerue-Matos, CristinaRegulations of the EU obliges the indication of the presence of allergens on food labels. This work reports the development of an electrochemical immunosensor to determine tropomyosin (TPM) – a major shellfish allergen – prevailing in the muscles of crustacean species. Two linear ranges between the signal and TPM concentration were obtained: between 2.5 and 20 ng mL−1 and between 30 and 200 ng mL−1, with a lowe...
Diamine oxidase-modified screen-printed electrode for the redox-mediated determ...
Torre, Ricarda; Costa Rama, Estefanía; Nouws, Henri; Delerue-Matos, CristinaHistamine is an important biogenic amine because of its role in immune responses and the regulation of physiological functions. It is also used as a food freshness indicator, so its maximum concentration in fish is legally regulated. Although several robust and sensitive methods for histamine detection are already available, it continues to be a challenge to develop simple and portable devices that allow rapid ...
Screen-Printed Electrode-Based Sensors for Food Spoilage Control: Bacteria and ...
Torre, Ricarda; Costa-Rama, Estefanía; Nouws, Henri P. A.; Delerue-Matos, CristinaFood spoilage is caused by the development of microorganisms, biogenic amines, and other harmful substances, which, when consumed, can lead to different health problems. Foodborne diseases can be avoided by assessing the safety and freshness of food along the production and supply chains. The routine methods for food analysis usually involve long analysis times and complex instrumentation and are performed in c...
Amperometric enzyme sensor for the rapid determination of histamine
Torre, Ricarda; Costa Rama, Estefanía; LOPES, Paula; Nouws, Henri; Delerue-Matos, CristinaThe concentration of histamine, a biogenic amine, in fish is considered a fish spoilage indicator. Therefore, the development of a rapid-response and portable tool that allows its on-site analysis is very interesting since the consumption of high amounts of histamine causes scombroid poisoning. Thus, in this work a simple enzymatic sensor for the determination of histamine, based on a screen-printed carbon elec...