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Percorrer por autor "Rodrigues, Sandra S.Q."

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  • Análisis sensorial de carne seca y salada de ovinos y caprinos
    Publication . Rodrigues, Sandra S.Q.; Paulos, Kátia; Pereira, Etelvina; Oliveira, António Filipe Gomes de Faria; Teixeira, Alfredo
    Una de las limitaciones de la producción de ovejas y cabras en Portugal es qué hacer con los animales de desvieje. Con el propósito de asignarle un valor añadido a este producto se estudió un proceso de transformación, el salado y secado de cuatro partes de la canal deshuesada (dos delanteros y dos traseros) con la finalidad de obtener una manta de carne. Aunque muchos estudios han señalado la influencia de las características nutritivas en la elección de alimentos, las propiedades sensoriales también son muy importantes para la aceptabilidad de la carne. Sin embargo, a menudo, las variables de preferencia se incluyen en los estudios de fichas descriptivas, mientras que en otros estudios se examinan las diferencias entre los productos sólo en términos de aceptación general (Risvik, 1994). El análisis sensorial realizado por catadores capacitados es la herramienta más adecuada para explicar las diferencias entre los tratamientos percibidas por los seres humanos. Así, el presente estudio tiene como objetivo evaluar el efecto de la especie y partes de la canal en la caracterización sensorial.
    2011Comunicação em conferência Acesso aberto Ver mais
  • A review of the use of oleogels to improve the quality of sheep and goat meat products
    Publication . Teixeira, Alfredo; Leite, Ana; Vasconcelos, Lia; Rodrigues, Sandra S.Q.
    Global demand for healthy, sustainable meat is rising due to consumer preferences for nutritious options. Sheep and goat meat, valued for flavor and leanness, require innovative quality assurance, especially outside Protected Designation of Origin (PDO) and Protected Geographical Indication (PGI) labels. Oleogels, solid at room temperature but melting at body temperature, enhance meat quality by replacing saturated fats with healthier unsaturated fats, aligning with health-conscious consumer trends. They also reduce environmental impact and cardiovascular risks. Oleogels maintain meat’s mouthfeel and texture, aiding in the development of healthier, sustainable products. While gelled emulsions show promise as fat replacers, their use in sheep and goat meat is largely untapped. This review highlights oleogels’ potential in transforming these meats, focusing on formulation, functionality, and benefits, to meet consumer demands for healthier, sustainable options
    2025Artigo científico Acesso aberto Ver mais
  • Use of Black Pepper Essential Oil to Produce a Healthier Chicken Pâté
    Publication . Rodrigues, Sandra S.Q.; Leite, Ana; Vasconcelos, Lia; Pereira, Etelvina; Seixas, Natália; Estevinho, Letícia M.; Teixeira, Alfredo
    This study aims to explore the effect of using black pepper essential oil (BPEO) to produce a healthier chicken pâté. Four different formulations were produced: a control formulation without back pepper and three with increasing BPEO contents. To test the effect of using BPEO, physiochemical analyses were performed at two different moments, 8 and 21 days after production. Microbiological analyses were performed 2, 9, 16, and 23 days after production. Sensory analysis to evaluate the pleasantness of the pâtés to consumers was performed 21 days after production. Finally, total phenol and flavonoid content and antioxidant activity were evaluated. Results show no significant physicochemical differences. Pâtés with no BPEO or black garlic were the most pleasant, but 0.3 or 0.5% of BPEO were not significantly less appreciated, while 1% of the EO caused a decrease in taste and global appreciation. The higher the BPEO content, the higher the phenol content, antioxidant (with an increase from 1.58 to 2.27 mg eq. Fe II/g of sample, in the Control at T23 and V3 at T23, respectively), and microbial activity (with total mesophiles count reduction from 5.91 to 5.21 log CFU/g sample in V3 from T9 to T16). The use of 1% of BPEO showed a significant effect on the reduction in mesophile counts for at least two weeks. These results highlight the potential for optimizing BPEO or black garlic content to ensure both consumer acceptance and enhanced functional properties. While further analysis will help pinpoint the best formulation, the current findings are a promising step towards achieving an optimal balance.
    2025Artigo científico Acesso aberto Ver mais