Antioxidant ultrafine fibers developed with microalga compounds using a free surface electrospinning. (August 2019)

• Record Type: Journal Article
• Authors: Moreira, Juliana Botelho; Lim, Loong-Tak; Zavareze, Elessandra da Rosa; Dias, Alvaro Renato Guerra; Costa, Jorge Alberto Vieira; Morais, Michele Greque de
• Is Part Of: Food hydrocolloids. Volume 93(2019)
• Page Start: 131
• Page End: 136
• Publication Date: 2019-08
• Subjects: Bioactive compound -- Food packaging -- Food preservation -- Spirulina -- Phycocyanin; Hydrocolloids -- Periodicals; Food additives -- Periodicals; Colloïdes -- Périodiques; Aliments -- Additifs -- Périodiques; Colloids; Food additives; Periodicals; Electronic journals; 664.06
• DOI: 10.1016/j.foodhyd.2019.02.015
• Languages: English
• ISSNs: 0268-005X

Abstract

Abstract: Free surface electrospinning is a method for high throughput production of nonwovens using electrostatic charge. The Spirulina microalga is known for its high protein content and it presents in its biomass antioxidants of commercial importance such as phycocyanin. The objective of this study was to develop antioxidant ultrafine fibers based on protein concentrate from Spirulina sp. LEB 18/poly(ethylene oxide) (PEO) and phycocyanin, using a free surface electrospinning method. Uniform ultrafine fibers of protein concentrate of Spirulina sp. LEB 18 containing 2% (w w −1 ) of phycocyanin were developed with diameters of 269, 314 and 542 nm, at 5, 7.5 and 10% (w w −1 ) protein concentrations, respectively. The electrospun fibers increased the thermal stability of phycocyanin. Overall, the Spirulina sp. LEB 18/PEO electrospun fibers loaded with phycocyanin showed antioxidant properties. Thus, microalgal biocompounds such as phycocyanin are innovative alternatives for the development of bioactive ultrafine fibers for potential application in food preservation. Graphical abstract: Image 1 Highlights: Ultrafine fibers were developed from protein concentrate from Spirulina sp. LEB 18. Electrospun fibers can potentially protect phycocyanin during thermal processing. The ultrafine fibers with phycocyanin showed 32.1% reduction of the ABTS + radical. The pigment from microalga presented potential to be applied as a bioactive material.