Browsing by Author "Pinto, E."
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- High-value compounds in papaya by-products (Carica papaya L. var. Formosa and Aliança): potential sustainable use and exploitationPublication . Ferreira da Vinha, Ana; S.G.Costa, Anabela; Espírito Santo, Liliana; Ferreira, Diana Melo; Silva, Carla Sousa e; Pinto, E.; Almeida, Agostinho; Oliveira, M. Beatriz P.P.Background: Food waste is a global and growing problem that is gaining traction due to its environmental, ethical, social, and economic repercussions. Between 2022 and 2027, the worldwide papaya market is expected to have a huge increase, meaning a growth in organic waste, including peels and seeds. Thus, this study evaluated the potential use of peels and seeds of two mature papaya fruits as a source of bioactive compounds, converting these by-products into value-added products. Proximate analysis (AOAC methods), mineral content (ICP-MS), free sugars (HPLC-ELSD), fatty acid composition (GC-FID), vitamin E profile (HPLC-DAD-FLD), and antioxidant activity (DPPH and FRAP assays) were evaluated. Results: Both by-products showed high total protein (20–27%), and dietary fiber (32–38%) contents. Papaya peels presented a high ash content (14–16%), indicating a potential application as a mineral source. 14 fatty acids were detected, with α-linolenic acid (30%) as the most abundant in the peels and oleic acid (74%) in the seeds. Both by-products showed high antioxidant activity. Conclusion: Papaya by-products display great potential for industrial recovery and application, such as formulation of new functional food ingredients.
- Novel halochromic and antimicrobial azopyrimidine dyes: synthesis, colorimetric studies and biological assaysPublication . Dantas, D.; Ribeiro, A.I.; Carvalho, L.F.; Pinto, E.; Cerqueira, Fátima; Zile, A.; Dias, A.
- Synthesis and antimicrobial activity of a new class of azoimidazolesPublication . Dantas, D.; Ribeiro, A.I.; Rodrigues, R.; Carvalho, L.F.; Pinto, E.; Cerqueira, Fátima; Geraldo, D.; Zile, A.; Dias, A.