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- Lycopene content and antioxidant capacity of portuguese watermelon fruitsPublication . Pinto, Paula; Santos, C.; Henriques, Carla; Basto de Lima, Maria Gabriela; Quedas, Maria de FátimaRed flesh watermelon is one of the main food sources with lycopene as the most abundant carotenoid and has been associated with a lowered risk of prostate cancer. In order to assess health benefits of Portuguese watermelon, five acessions from the Portuguese Bank of Germplasm were were chosen for antioxidant quantification and total solids content. Two of the acessions were further characterized for lycopene content. Due to its lycopene and antioxidant contents, accession 6185 may be considered a valuable germplasm for breeding programmes. The intake of one to three wedges of 6185 watermelon accession would provide between 6 to 18 mg of lycopene and 0.18 to 0.54 mmol TEAC (Trolox Equivalent Antioxidant Capacity), which might protect from prostate cancer and other oxidative stress related diseases.
- Caracterização de cucurbitáceas (melancia e abóbora): perfil electroforético de polipéptidos e conteúdo total em antioxidantesPublication . Mendrico, T.; Quedas, Maria de Fátima; Pinto, Paula
- Estudo exploratório da estimativa indireta de licopeno via análise colorimétrica de genótipos de tomateiro de acessos tradicionais frescos e refrigeradosPublication . Lucas, H.; Torgal, Isabel; Faro, Conceição; Santana, Antonieta; Pinto, Paula; Laranjeira, Cristina; Lopes, Fátima; Quedas, Maria de Fátima; Basto de Lima, Maria GabrielaThe collection of tomato (Lycopersicon esculentum Mill) Portuguese Bank of Plant Germplasm of INRB, brings together dozens of hits in characterization. This paper presents results of color versus lycopene content of tomato accessions of some Portuguese Plant Germplasm Bank (2011-2012), in order to indirectly estimate the levels of lycopene in tomato fresh/chilled accesses via colorimetric analysis. The study took place in 10 tomato accessions, fresh and chilled to 5 ° C. The changes in color /pigment during the ripening of tomato are characterized by reduced chlorophyll and a rapid accumulation of carotenoids, particularly lycopene. Sometimes, due to the convenience and ease of use of color measuring the content of lycopene in the tomato pulp can be determined without the need to conduct a chemical analysis, in that there is a good correlation between the color of the fruit and lycopene content (adapted D'Souza, et al., 1992, Arias, et al., 2000 cited by Carvalho, et al., 2005). For all this justifies the existence of quality control tools across the row, starting at the selection of genotypes in breeding programs of tomato. The homogenized pulp is considered one of the best alternatives correlation associated with the chromaticity coordinate a.------The collection of tomato (Lycopersicon esculentum Mill) Portuguese Bank of Plant Germplasm of INRB, brings together dozens of hits in characterization. This paper presents results of color versus lycopene content of tomato accessions of some Portuguese Plant Germplasm Bank (2011-2012), in order to indirectly estimate the levels of lycopene in tomato fresh/chilled accesses via colorimetric analysis. The study took place in 10 tomato accessions, fresh and chilled to 5 ° C. The changes in color /pigment during the ripening of tomato are characterized by reduced chlorophyll and a rapid accumulation of carotenoids, particularly lycopene. Sometimes, due to the convenience and ease of use of color measuring the content of lycopene in the tomato pulp can be determined without the need to conduct a chemical analysis, in that there is a good correlation between the color of the fruit and lycopene content (adapted D'Souza, et al., 1992, Arias, et al., 2000 cited by Carvalho, et al., 2005). For all this justifies the existence of quality control tools across the row, starting at the selection of genotypes in breeding programs of tomato. The homogenized pulp is considered one of the best alternatives correlation associated with the chromaticity coordinate a *.
- Caracterização química de acessos de tomateiro do BPGVPublication . Quedas, Maria de Fátima; Lopes, Maria; Pinto, Paula; Diogo, Maria; Santana, Antonieta; Matos, Anabela; Reis, Ana; Torgal, Isabel