Browsing by Author "Pintado, Maria"
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- Enhancing storage stability of smoke-flavored horse mackerel filets using natural extracts as preservativesPublication . Barros, Diana; Nova, Paulo; Cunha, Sara; Monteiro, Vitor; Fernandes, Élia; Pereira-Pinto, Ricardo; Barbosa, Carla; Pintado, Maria; Gomes, Ana; Vaz-Velho, ManuelaThe Atlantic horse mackerel (Trachurus trachurus) is a globally favored fish due to its abundance, nutritional value, and affordability, but it faces quality preservation challenges. To address this, this study aimed to enhance its value by creating low-salt smoked products with natural bioactive compounds from seafood and forest sources. The fish filets were divided into four groups: one as a control, and the others were treated with various bioactive extract solutions, specifically pine bark, mussels, and microalgae. After 15 days of storage at 4°C, significant differences in properties were observed. Moisture and salt had an inverse relationship, with decreasing moisture and pH over time. Oxidation levels remained acceptable, although sensory quality was affected by storage. Microbiological analysis uncovered high contamination levels in certain samples at specific points in time, although no pathogens such as Salmonella spp. or Listeria monocytogenes were detected. While microalgae extract was the most powerful antioxidant, its performance was hampered by the poor sensory scores. On the other hand, pine bark extract was the most acceptable from a sensory point of view and revealed some antimicrobial inhibition. Using natural antioxidants provides an appealing solution for consumers seeking products with clean labels.
- Research, develoment and future trends for medical textile productsPublication . Baptista-Silva, Sara; Borges, Sandra; Brassesco, María Emilia; Coscueta, Ezequiel R.; Oliveira, Ana L.; Pintado, MariaMedical textiles are functional textiles resulting from production technologies, materials, and medicines which make them technically sophisticated products for different biomedical applications concerning their potential. Medical textiles can be classified as non-implantable (i.e., dressings and gauze), implantable (i.e., artificial arteries, sutures, vascular grafts), intelligent textiles (i.e., for thermoregulating, shape), extracorporeal devices (i.e., artificial organs) and health/hygiene products. Recurrent fibres in functional medical textiles must be non-toxic, non-allergenic or carcinogenic. Parameters such as strength, flexibility, absorption, or biodegradability may be desired for products with specific functionalities. This chapter focuses on the progress of medical textiles from natural resources, their functional modifications, and their added-value potential applications. A description is provided on the technologies, from bio-based medical textiles to the development of medical textiles with high absorption, antimicrobial, drug release, protection, and other highly valuable functions in biomedical materials or tissue regeneration.