282 documents found, page 1 of 29
Can the region of production affect the quality and composition of olive oil? C...
Rocha, Pedrina; Lamas, Sandra; Casal, Susana; Martins, Luísa L.; Rodrigues, NunoPortugal is a notable olive oil-producing country, gaining prominence in the last decade. This study examined how geographic origin influences olive oil quality by analyzing samples from three key regions (Alentejo, Beira Interior, and Trás-os-Montes) and two major cultivars: Cobrançosa and Galega. All oils met the extra-virgin classification criteria, with free acidity consistently below 0.30%, and peroxide va...
Deciphering How Olive Volatiles and Fatty Acids Shape Bactrocera oleae (Rosii) ...
González‐Fernández, Antonio; Rallo, Pilar; Peres, António M.; Rodrigues, Nuno; Casal, Susana; Pereira, José Alberto; Morales‐Sillero, AnaThe olive fly (Bactrocera oleae (Rossi)), the major pest of olives, primarily recognises visual, olfactory, acoustic, gustatory and tactile signals that regulate its behavioural activity, courtship and reproductive success, as well as the search for ideal conditions for its offspring. Recent studies highlight the importance of chemical compounds present in olive fruits, particularly volatile organic compounds (...
Influence of household conditions on the shelf-life and polyphenolic-related he...
Alimi, Siwar; Rodrigues, Nuno; Veloso, Ana C. A.; Cruz, Rebeca; Khemakhem, Maissa; Pereira, José Alberto; Casal, Susana; Peres, António M.This study examines how typical household conditions after bottle opening affect the physicochemical, sensory, and bioactive properties of cv. Cobrançosa extra virgin olive oil (EVOO), attempting to define kinetic models to predict the shelf-life (SL) during domestic use. For 9 weeks, EVOO amber glass bottles (750 mL), exposed to light (n = 5) or darkness (n = 5), at 18 ± 2 ºC, were opened/shaken daily to simul...
Nutritional and health claims compliance of olive oils produced from centenaria...
Bortoluzzi, Leticia; Casal, Susana; Cruz, Rebeca; Peres, António M.; Baptista, Paula; Rodrigues, NunoThis work examined whether centenarian trees could be a source of virgin olive oil (VOO) that accomplishes nutritional and health claims regarding unsaturated fatty acids (UFA), tocopherols and phenolic compounds (tyrosol and hydroxytyrosol derivatives). A total of 159 VOOs from centenarian trees of Côa Valley-Portugal were analysed to assess their compliance with those claims. All VOOs met the criteria for ‘hi...
Characterization of Liquid Dosage Forms of Atenolol and Enalapril Maleate for O...
Mota, Sandra; Torres, Ana; Quintas, Clara; Peres, António M.; Ferreiro, Nuno Manuel; Cruz, Rebeca; Ferreira, Helena; Almeida, Isabel F.; Casal, SusanaThe limited availability of pharmaceutical formulations tailored for cardiovascular diseases in both pediatric and geriatric populations generates the need for compounded dosage forms to guarantee precise dosing and medication adherence. This study aimed to analyze the physicochemical properties and stability of formulations of atenolol and enalapril maleate prepared with a proprietary oral vehicle, SuspendIt®....
Identification of the geographical origin of Spanish beech nuts, Fagus sylvatic...
Lamas, Sandra; Rodrigues, Nuno; Herrero, Baudilio; Casal, Susana; Cruz, Rebeca; Pereira, José Alberto; Peres, António M.In general, dry nuts, such as hazelnuts, almonds. chestnuts and walnuts, composition has been investigated and are well characterized. Nevertheless, other less unknown nuts, such as beech nuts have little information. Beech nuts proceed from the Fagus sylvatica L. tree, which is prevalent in central and southem Europe, and is commonly used for oil extraction. A study carried out by Obranovic et al. found that t...
Identification of the geographical origin of Spanish beech nuts, Fagus sylvatic...
Lamas, Sandra; Rodrigues, Nuno; Herrero, Baudilio; Casal, Susana; Cruz, Rebeca; Pereira, José Alberto; Peres, António M.In general, dry nuts, such as hazelnuts, almonds, chestnuts and walnuts, composition has been investigated and are well characterized. Nevertheless, other less unknown nuts, such as beech nuts have little information. Beech nuts proceed from the Fagus sylvatica L. tree, which is prevalent in central and southern Europe, and is commonly used for oil extraction. A study carried out by Obranovic et al.1 found that...
High-pressure processing effects on microbiological stability, physicochemical ...
Lopes, Ana C.; Queirós, Rui P.; Inácio, Rita S.; Pinto, Carlos A.; Casal, Susana; Delgadillo, Ivonne; Saraiva, Jorge A.Nowadays, consumers are more aware of the effects of their diet on their health, and thus demand natural or minimally processed food products. Therefore, research has focused on processes that assure safe products without jeopardizing their nutritional properties. In this context, this work aimed to evaluate the effects of high-pressure processing (550 MPa/3 min/15 °C, HPP) on a fruit salad (composed of melon j...
Influence of interannual climate conditions on the composition of olive oil fro...
Bortuluzzi, Letícia Cabrera Parra; Casal, Susana; Cruz, Rebeca; Peres, António M.; Baptista, Paula; Rodrigues, NunoIn recent years, occurrences of heat waves and drought have become increasingly frequent, highlighting the undeniable impact of climate change. The rise in temperatures and decline in rainfall have had severe repercussions on olive trees’ behavior and olive oil production. This study aims to evaluate the effects of two-year climate variations on olive oils from centenarian olive trees situated in the Côa Valley...
Nutritional and quality evaluation of hyperbaric stored fresh cheeses
Duarte, Ricardo V.; Casal, Susana; Gomes, Ana M.; Delgadillo, Ivonne; Saraiva, Jorge A.Cow's and goat's fresh cheese (FC), two highly perishable dairy products, were stored under hyperbaric storage at room temperature (HS/RT, 50–100 MPa) and compared with refrigeration (RF, 4 °C), for 60 days. Under HS/RT (≥75 MPa), FCs presented a more stable volatile organic and fatty acid profiles, and reduced lipid oxidation rate, particularly for cow's FC, resembling more to FC prior storage, contrarily to r...