371 documents found, page 1 of 38
Microfabrication of rubidium-85 vapor cell for optically pumped magnetometer ap...
Pereira, Hugo Martins; Dores, B. S.; Silva, J. P. O.; Venâncio, Armando; Cerqueira, M. F.; Rodrigues, J. A.; Correia, J. H.Neuroimaging methods have contributed to enhancing the knowledge of human brain activity. Magnetoencephalography is a general neuroimaging method that typically uses superconducting quantum interference devices as brain magnetic field sensors that require cryogenic cooling, putting practical and economical limitations. Optically pumped magnetometers are a promising alternative based on the use of atomic vapor c...
NADES-in-Oil Emulsions Enriched with Essential Oils for Cosmetic Application
Freitas, David; Rocha, Diana; Santos, Joana; Noro, Jennifer Martins; Tavares, Tânia D.; Teixeira, Marta O.; Araújo, Daniela; Castro, Joana Isabel ReisThis research aims to explore the potential benefits of natural deep eutectic solvents (NADES) in formulating translucent NADES-in-oil emulsions (TEs) containing essential oils (EOs) for cosmetic applications. The TEs investigated in this study are based on previous formulations, consisting of 50 wt.% egg phosphatidylcholine (EPC), 20 wt.% ethanol, 20 wt.% olive oil (OlO), thyme oil (TO), or oregano oil (OrO), ...
Control of Stemphylium vesicarium in "Rocha" pear using encapsulated essential ...
Mendonça, Inês; Fernandes, Beatriz; Almeida, Carina Manuela Fernandes; Serrano, Carmo; Leão, Miguel; Venâncio, Armando; Silva, Sónia Carina[Excerpt] Introduction Stemphylium vesicarium is a plant-pathogenic fungus that poses a significant challenge to pear production, where it causes brown spot of pear (BSP) [1]. The "Rocha" pear, an exclusively Portuguese variety of high importance has been experiencing substantial losses due to BSP [2]. The rise of fungicide resistance and concerns about their environmental impact have driven the search for sust...
Impact of thermal treatment on Talaromyces trachyspermus spores inactivation
Sousa, Diana F.; Noronha, L.; Venâncio, Armando; Silva, Sónia Carina[Excerpt] Introduction Heat-resistant molds (HRM) pose a significant challenge to the fruit juice industry, as they can endure heat treatment and cause product spoilage.[...]
Mycotoxins in plant-based beverages: a study on occurrence in the Brazilian market
Kerstner, Francine; Oliveira, Crislei Ferreira de; Venâncio, Armando; Silva, C.; Buffon, Jaqueline GardaPlant-based beverages have become increasingly popular due to their health and sustainability appeal. However, raw plant-based ingredients are often associated with mycotoxin contamination. This study aimed to assess the presence of six mycotoxins aflatoxin B1, deoxynivalenol, 3-acetyldeoxynivalenol, 15-acetyldeoxynivalenol, ochratoxin A and zearalenone in plant-based beverages available on the Brazilian market...
The definition of chemical contaminants in food: ambiguity and consequences
Rietjens, Ivonne M. C. M.; Pascale, Michelangelo; Pellegrino, Gloria; Ribera, Daniel; Venâncio, Armando; Wang, Danlei; Korzeniowski, KonradConsumers may be exposed via foods to a diverse range of substances that could be considered as contaminants. However, it is not always straightforward to understand the definition of a contaminant. The present review evaluates how various categories of food-relevant substances are considered in terms of being contaminants. To this end these categories of food borne constituents are evaluated against the variou...
Assessment of farmer’s knowledge and attitudes toward fungi and mycotoxin conta...
Bila, João; Macuamule, Custódia; Bombe, Amina; Ribeiro, Maria Isabel; Venâncio, Armando; Afonso, Sandra; Rodrigues, PaulaIn Mozambique, 80% of the population directly depends on agriculture as a source of food and income. However, some of the most produced food crops, such as maize, rice and peanuts, are easily contaminated by fungi and mycotoxins. The naturally high prevalence of mycotoxins can be aggravated by the high vulnerability and lack of knowledge of the farmers. The aims of this study were to assess the knowledge and pe...
Enzymatic degradation of ochratoxin A: the role of ultra-pure water
Santos, Joana; Oliveira, Constança; Teixeira, Filipe; Venâncio, Armando; Silva, C.Ochratoxin A (OTA) is a toxic mycotoxin, making its removal from food essential for public health. This study examines OTA degradation by porcine pancreatic lipase (PPL) in ultra-pure water versus buffer systems through in vitro assays and molecular modeling. The results show that PPL fully degrades OTA in ultra-pure water within 7 h at 44 °C, whereas only partial degradation occurs in phosphate buffer. After 4...
Assessment of farmer’s knowledge and attitudes toward fungi and mycotoxin conta...
Bila, João; Macuamule, Custódia; Bombe, Amina; Ribeiro, Maria Isabel; Venâncio, Armando; Afonso, Sandra; Rodrigues, PaulaIn Mozambique, 80% of the population directly depends on agriculture as a source of food and income. However, some of the most produced food crops, such as maize, rice and peanuts, are easily contaminated by fungi and mycotoxins. The naturally high prevalence of mycotoxins can be aggravated by the high vulnerability and lack of knowledge of the farmers. The aims of this study were to assess the knowledge and pe...
Evaluation of corn drying and storage techniques to mitigate damage and total a...
Matusse, Cláudio; Bila, João; Macuamule, Custódia; Sampaio, Ana; Venâncio, Armando; Rodrigues, PaulaContamination of corn by molds and aflatoxins is a major problem in Mozambique, and appropriate drying and storage of this essential food crop is crucial. This study aimed to evaluate the effects of different drying and storage techniques traditionally employed by smallholder farmers in the province of Gaza, Mozambique, in preventing degradation and aflatoxin contamination of corn. Two trials, one for drying an...