Igor Henrique de Lima Costa; Helen Cristina dos Santos Hackbart; Gabriela de Oliveira; Juliani Buchveitz Pires; Pedro Jos\u00e9 Sanches Filho; Fernanda Hart Weber; Graciele da Silva Campelo Borges; Elessandra da Rosa Zavareze; Alvaro Renato Guerra Dias<\/p>\n
Pitaya fruit (Hylocereus<\/i>\u00a0spp.) is rich in bioactive compounds such as betanin. This study aimed to extract betanin-rich pitaya fruit and encapsulate it in electrospun nanofibers produced with sweet potato starch. The influence of different concentrations of this bioactive compound on the morphology, functional groups, hydrophilicity, load capacity, color, thermal properties, and contact angle of the electrospun nanofibers with water and milk was assessed. The potential antioxidant and stability of nanofibers during gastrointestinal digestion\u00a0in vitro<\/i> were demonstrated. The nanofibers presented average diameters ranging from 134 to 204\u2009nm and displayed homogeneous morphology. The load capacity of the extract in the nanofibers was 43% to 83%. The encapsulation increased the thermal resistance of betanins (197\u2013297\u2009\u00b0C). The static contact angle with water and milk showed that these materials presented greater affinity with milk. Principal component analysis (PCA) and hierarchical cluster analysis (HCA) showed that the nanofibers with 5%, 25%, and 45% pitaya extract presented unique characteristics. They showed resistance in delivering betanins to the stomach, with 12% inhibition of the 2,2-diphenyl-1-picrylhydrazyl (DPPH\u02d9) radical. However, only the 45% concentration reached the intestine with 9.83% inhibition of the DPPH\u02d9 radical.<\/span>Pattern recognition from multivariate analyses indicated that nanofibers containing 5%, 25%, and 45% of the extract presented distinct characteristics, with the ability to preserve betanins against thermal degradation and perform the controlled delivery of these bioactives in the stomach and intestine to produce antioxidant activity.\u00a0<\/span><\/p>\n Pitaya (Hylocereus polyrhizus) extract rich in betanin encapsulated in electrospun sweet potato starch nanofibers Igor Henrique de Lima Costa; Helen Cristina dos Santos Hackbart; Gabriela de Oliveira; Juliani Buchveitz Pires; Pedro Jos\u00e9 Sanches Filho; Fernanda Hart Weber; Graciele da Silva Campelo Borges; Elessandra da Rosa Zavareze; Alvaro Renato Guerra Dias Pitaya fruit (Hylocereus\u00a0spp.) is rich… <\/p>\nhttps:\/\/doi.org\/10.1002\/jsfa.13880<\/a><\/h3>\n","protected":false},"excerpt":{"rendered":"