48 documents found, page 1 of 5
Mycotoxins in Rice Correlate with Other Contaminants? A Pilot Study of the Port...
Silva, Liliana; Pereira, André; Duarte, Sofia; Pedro, Inês; Perdigão, Catarina; Silva, Alexandra; Lino, Celeste M.; Almeida, Anabela; Pena, AngelinaRice is the second most important cereal crop and is vital for the diet of billions of people. However, its consumption can increase human exposure to chemical contaminants, namely mycotoxins and metalloids. Our goal was to evaluate the occurrence and human exposure of aflatoxin B1 (AFB1), ochratoxin A (OTA), zearalenone (ZEN), and inorganic arsenic (InAs) in 36 rice samples produced and commercialized in Portu...
The Bright and Dark Sides of Herbal Infusions: Assessment of Antioxidant Capaci...
Mateus, Ana Rita Soares; Crisafulli, Carmen; Vilhena, Matilde; Barros, Sílvia; Pena, Angelina; Silva, Ana SanchesHerbal infusions are highly popular beverages consumed daily due to their health benefits and antioxidant properties. However, the presence of plant toxins, such as tropane alkaloids, constitutes a recent health concern for herbal infusions. This work presents an optimized and validated methodology based on the QuEChERS (Quick, Easy, Cheap, Effective, Rugged, and Safe) extraction procedure followed by Ultra-Hig...
Risk Assessment of Nine Coccidiostats in Commercial and Home-Raised Eggs
Martins, Rui R.; Pereira, André; Silva, Liliana; Esteves, Alexandra; Duarte, Sofia C.; Freitas, Andreia; Pena, AngelinaThe poultry industry, in order to prevent and control coccidiosis caused by Eimeria spp., widely uses coccidiostats as feed additives. The main objective of this study was to evaluate the presence of nine coccidiostats in 62 egg samples by UHPLC-MS/MS. Overall, detection frequency and average concentration were 90.3% (56/62) and 106.3 μg kg-1, respectively. Only diclazuril and nicarbazin were detected. Diclazur...
Pharmaceuticals Removal from Wastewater with Microalgae: A Pilot Study
Pereira, André; Morais, Etiele Greque de; Silva, Liliana; Pena, Angelina; Freitas, Andreia; Teixeira, Margarida Ribau; Varela, João; Barreira, LuísaUrban wastewaters contain pharmaceuticals that are not appropriately removed in conventional wastewater treatments, limiting treated water reuse. Microalgae have been shown to remove pharmaceuticals from urban wastewater in laboratory trials, but few studies have been conducted under natural conditions. In this work, pharmaceutical removal was assessed in a pilot-scale microalgal tertiary wastewater treatment i...
Analysis of Antibiotics in Bivalves by Ultra-High Performance Liquid Chromatogr...
Pereira, André; Freitas, Andreia; Pena, Angelina; Silva, LilianaThe presence of pharmaceuticals in aquatic ecosystems mostly originates from wastewater treatment plants (WWTPs) and such a situation can be responsible for significant negative impacts on natural ecosystems, such as estuarine and coastal areas. Bioaccumulation of pharmaceuticals, namely antibiotics, in exposed organisms is known to have remarkable effects on different trophic levels of non-target organisms suc...
By-products of dates, cherries, plums and artichokes: A source of valuable bioa...
Mateus, Ana Rita Soares; Pena, Angelina; Sendón, Raquel; Almeida, Carina; Nieto, Gonçalo Almeida; Khwaldia, Khaoula; Silva, Ana SanchesBackground Food processing is fundamental to extend the shelf-life of food products. During the processing, several parts of food are wasted. FAO indicated that about one-third of the world's food production for human consumption was lost or wasted, and food waste is an environmental, economic, and social problem. Fruits and vegetables are the food groups with the highest amount of food waste, both in food proc...
Pharmaceuticals removal from wastewater with microalgae: a pilot study
Pereira, André; Morais, Etiele Greque; Silva, Liliana; Pena, Angelina; Freitas, Andreia; Teixeira, Margarida Ribau; Varela, João; Barreira, LuísaUrban wastewaters contain pharmaceuticals that are not appropriately removed in conventional wastewater treatments, limiting treated water reuse. Microalgae have been shown to remove pharmaceuticals from urban wastewater in laboratory trials, but few studies have been conducted under natural conditions. In this work, pharmaceutical removal was assessed in a pilot-scale microalgal tertiary wastewater treatment i...
Arsenic in Portuguese Rice: Is There Any Risk?
Silva, Alexandra; Pereira, André; Silva, Liliana João Gatões da; Pena, AngelinaArsenic is a metalloid with natural and anthropogenic sources and its inorganic form is toxic to humans. Rice is highly consumed worldwide and is prone to arsenic contamination; therefore, this study evaluated the inorganic arsenic content of 70 Portuguese rice samples. These were analysed through inductively coupled plasma mass spectrometry (ICP-MS) with a detection limit of 3.3 µg kg-1. The average contaminat...
Mycotoxins Exposure in Cabinda, Angola-A Pilot Biomonitoring Survey of Breastmilk
Duarte, Sofia; Silva, Liliana J. G.; Pereira, André; Gimbi, Marta; Cesar, Cristiane; Vidal, Vanessa; Basílio, Rita; Almeida, Anabela; Lino, CelesteBreast milk is considered the ideal form of nutrition for newborns and infants. However, it can carry over contaminants, namely mycotoxins, with biological effects to which this population is particularly vulnerable. Human biomonitoring and surveillance programs are particularly scarce in low-income countries, where food security is a more urgent priority in comparison with food safety. This pilot survey aims t...
O papel do farmacêutico no aconselhamento ao doente celíaco
Pereira, Liliana; Gonçalves, Sara; Campos, Maria João; Pena, AngelinaA doença celíaca é uma inflamação crónica a nível intestinal que condiciona a alimentação do doente, uma vez que este não pode ingerir glúten. Existem vários fatores, ambientais, genéticos e imunológicos, cruciais para o desenvolvimento da doença celíaca. Esta doença pode classificar-se de várias formas e apresentar diversos sintomas, sendo que uma dieta isenta de glúten é o tratamento que alivia estes sintomas...