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Investigação em alimentos e soluções de base biológica - CEECINST/00107/2021/CP2793/CT0002
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Multivariate Chemometric analysis of chemical diversity in French winter and spring Lupinus albus L. varieties
Publication . Ayuso, Manuel; Silveira, Tayse F. F. da; Almeida, Daiana; Harzic, Natalie; Gagnaire, Valérie; Aguiló-Aguayo, Ingrid; Barros, Lillian
White lupin (Lupinus albus L.) is a nutrient-rich legume well-adapted to Mediterranean climates and tolerant of abiotic stress. Therefore, lupins represent a sustainable crop option with high potential for use in areas where climate change impacts are intensifying. This study analysed eight cultivars, four winter and four spring ecotypes, to assess differences in nutritional and bioactive compounds. Key compounds studied included proteins, fats, carbohydrates, tocopherols, and phenolics. Spring ecotypes like 'Sulimo' and 'Energy' showed higher protein and tocopherol content, which may be ideal for protein-rich, antioxidant-rich diets. Winter ecotypes such as 'Angus' had more carbohydrates, especially fructose and raffinose, which could benefit energy and gut health. Both ecotypes showed high fibre levels, supporting digestive health. The findings suggest that ecotype influences chemical composition significantly, and each offers distinct benefits for targeted nutritional and functional food applications.
Nutritional and biochemical profile and bioactive properties of four Greek local landraces of onion
Publication . Polyzos, Nikolaos; Almeida, Daiana; Fernandes, Ângela; Pires, Tânia C.S.P.; Silveira, Tayse F. F. da; Barros, Lillian; Petropoulos, Spyridon A.
The preservation of genetic diversity of horticultural crops is essential for modern agroecosystems that face pressure from climate change and the intensification of crop production.
Methodology In the present work, the nutritive value, chemical profile and bioactive properties of four Greek onion local landraces were investigated for the first time. The tested genotypes included three local landraces originated from the region of Thiva, one landrace collected from Evoia, as well as one commercial cultivar which was used as the control treatment. All the genotypes were assessed in terms of nutritional value, chemical composition and bioactivities.
Results and discussion Our results indicate a high variability in the nutritive value and the chemical profile of the studied genotypes, while varied bioactive properties were also recorded. The bulbs of the local landrace ON5 were the richest in polyphenols and quercetin in particular, a finding which was also accompanied by the highest antioxidant activity. On the other hand, the commercial cultivar was the richest in total and individual free sugars, as well as in total dietary fibers and total organic acids, results which indicate a sweeter taste and higher pungency. In conclusion, the studied landraces showed promising properties and they could be further valorized through the implementation of breeding programs aiming to produce new elite onion genotypes with high nutritional and bioactive potential.
Effects of radiofrequency on chestnut quality
Publication . Ribeiro, Caroline; Melgar Castañeda, Bruno; Fernandes, Ângela; Pires, Tânia C.S.P.; Finimundy, Tiane C.; Moreira, Jorge; Alexandre, Elizabete; Freire, Carlos; Franca, Tiago Vila; Fernandes, Natércia C.P.; Gonçalves, Alexandre; Barros, Lillian
The chestnut (Castanea sativa Mill.) is a fruit with high nutritional value, but it is highly susceptible to infestation and post-harvest deterioration [1]. Infestations by Curculio elephas (Gyll) and Cydia splendana (Hübner) pose a significant challenge to the food industry, reducing product quality and causing considerable economic losses [2]. This study assessed the impact of radiofrequency (RF) application on the post-harvest quality of "Judia" chestnuts.
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CEECINST/00107/2021/CP2793/CT0002