139 documents found, page 1 of 14
Insect-based chitin and chitosan from whole body sources and rearing by-product...
Navarro, Pedro; Ribeiro, José Carlos Reis; Luís, Ângelo Filipe Santos; Domingues, Fernanda; Anjos, Ofélia; Cunha, LuisFractionation of edible insects and their rearing by-products can lead to expanded industrial applications and extraction of value-added products. The main goal of this study was to extract chitin and synthesise chitosan from three different insect sources – Tenebrio molitor larvae, adult Acheta domesticus and A. domesticus rearing by-products (legs and wings). Furthermore, the physicochemical, structural, and ...
Food Waste: Consumer perspective.
Ribeiro, Paulo; Anjos, Ofélia; Gonçalves Oliveira Valente da Cruz-Lopes, Luísa Paula; Guiné, Raquel de Pinho FerreiraThis research was developed to investigate people’s attitudes towards food waste and how these possibly change according to sociodemographic groups. The consumer study was carried out in 16 countries (Argentina, Brazil, Croatia, Egypt, Greece, Hungary, Italy, Latvia, Lithuania, Netherlands, Poland, Portugal, Romania, Serbia, Slovenia, and United States of America), and involved 11916 participants. The main ques...
Healthy motivations for food consumption in 16 countries
Guiné, Raquel; Joana Gonçalves; Florença, Sofia de Guiné e; Ferreira, Manuela; Cardoso, Ana Paula; Elena Bartkiene; Djekić, Ilija; Tarcea,MonicaThere are many factors that can influence people’s attitudes towards healthy eating, including personal nature, sociodemographic influences, and lifestyle. This work investigated to what extent the motivations for healthy food consumption are shaped in individuals from different countries. A questionnaire survey was carried out on a sample of 11,919 participants from 16 countries. The results indicated that the...
A Revisit of Plant Food Waste Along Food Supply Chains: Impacts and Perspectives.
Gonçalves, Joana; Anjos, Ofélia; Guiné, RaquelMore than one billion tons of the food produced in the world ends up being wasted every year, accounting for about one-third of the food produced globally. For this reason, the problem of food waste management has been the focus of the different actors intervening in the food supply chains, who recognize that food waste has not only environmental but also economic and social impacts. This review focuses on food...
Elemental and Nutritional Characterisation with Vibrational Spectroscopy Analys...
Mouga, Teresa; Almeida, Mariana M.; Pitacas, Filipa Inês; Rodrigues, António Moitinho; Vitória, Cláudia; Anjos, OféliaMacroalgae are rich in bioactive compounds with potential therapeutic appli cations, including antioxidant, antimicrobial, and nutritional properties. In this study, the biochemical composition of three seaweed species—Ulva sp., Gracilaria multipartita, and Sargassum muticum—was analysed, focusing on their mineral content and macronu trient profile. The ash, protein, fibre, lipid, and carbohydrate contents rang...
Elemental and Nutritional Characterisation with Vibrational Spectroscopy Analys...
Mouga, Teresa; Almeida, Mariana M.; Pitacas, Filipa Inês; Rodrigues, António Moitinho; Vitória, Cláudia; Anjos, OféliaMacroalgae are rich in bioactive compounds with potential therapeutic applications, including antioxidant, antimicrobial, and nutritional properties. In this study, the biochemical composition of three seaweed species—Ulva sp., Gracilaria multipartita, and Sargassum muticum—was analysed, focusing on their mineral content and macronutrient profile. The ash, protein, fibre, lipid, and carbohydrate contents ranged...
Unveiling the chemistry and bioactivity of bee products and their derivatives
Anjos, Ofélia; Miguel, Maria da GraçaApiculture, or beekeeping, refers to the cultivation and management of honey bees for honey and byproducts, including the extraction, bottling, and sale of hive products such as honey, propolis, royal jelly, bee venom, bee pollen, bee bread and other fermented bee products [1]. Honey is a supersaturated solution or semi-solid natural sweet product produced by both honey bees (Apis subfamily) and stingless bees ...
A systematic analysis of nutritional and mineral composition and toxicity in Ac...
Pedro, Soraia; Gonçalves, Joana; Monteiro, M.C.H.; Gonçalves, José Carlos; Gominho, Jorge; Gallardo, Eugenia; Anjos, OféliaIn the present study, the nutritive composition and mineral content of the leaves of eight species of Acacia trees were evaluated to assess their potential for different purposes, such as food resources for ruminants and mineral sources in soils. Caco-2 cells were employed to assess cytotoxicity, revealing that the extracts exhibited no cytotoxic effects after cellular incubation, suggesting their suitability a...
Comparison of FT-Raman and FT-NIR spectroscopy for distinguishing between two h...
Pedro, Soraia; Ferreira, Ana; Catarro, Gonçalo; Gallardo, Eugenia; Peres, Maria de Fátima; Anjos, OféliaVibrational spectroscopy has demonstrated high applicability for honey analysis, offering rapid, non-destructive and accurate methods for assessing its chemical composition, identifying different honey regions and ensuring authenticity. In this study, we compare the usefulness of FT-Raman and FT-NIR spectroscopy techniques in distinguishing between two Protected Designation of Origin (PDO) of honey, name qualit...
Using Analytic Hierarchy Process to Assess Beekeeping Suitability in Portuguese...
Roque, Natália; Fernandez, Paulo; Silveira, Carlos; Vilas-Boas, Miguel; Anjos, OféliaSimple Summary Beekeeping is an activity that supports agriculture and wildlife on earth, so it is very important to provide accurate information that is able to help in increasing the profitability of beekeeping and valorize pollination services. In this paper, a new methodology is proposed to assess beekeeping potential using Geographic Information Systems (GIS) and the Analytical Hierarchy Process. The propo...