Dielectric barrier atmospheric cold plasma applied to the modification of Ariá (Goeppertia allouia) starch: Effect of plasma generation voltage

Cold plasma technologies: Their effect on starch properties and industrial scale-up for starch modification

“…The authors reported a decrease in the ratio of absorbance at 1047/1022 cm −1 . A similar decrease was observed in the band ratios of 1047/1022 cm −1 in corn starches by Bie et al (2016b) and Zhou et al (2019) , and in aria starch by Carvalho et al (2021) . On the other hand, S. Yan et al (2020) observed an increase in the ratio of absorbance intensity at 1047/1022 cm −1 in banana starch.…”

“…Furthermore, FTIR has also been used as a means of detecting cross-linking in starches. Carvalho et al (2021) observed an increase in the areas of the C–O–C linkages in aria starch after DBD treatment (10–14 kV). Also, Wongsagonsup et al (2014) and Deeyai et al (2013) observed an increase in the relative areas of the C–O–C linkages in starch after plasma treatment.…”

“…DBD modification also caused cracks on the surface of banana starch (S. Yan et al, 2020 ), red adzuki bean starch ( Ge et al, 2021a ) and potato starch ( Guo et al, 2022 ). Carvalho et al (2021) observed the formation of fissures and particle aggregation in aria starch granules after DBD (20 kV) plasma treatment. The highly energetic species produced during plasma generation bombards the surface of the starch granule.…”

“…On the contrary, at higher treatment voltage, depolymerization occurs fully inside the starch molecule and thus decreases the MWv. Carvalho et al (2021) observed a decrease in the amylose content in aria starch after DBD treatment of up to 14 kV. They attributed this decrease to the depolymerization of aria starch into simple sugars.…”

Efeitos do tratamento de plasma não térmico gerado por micro-ondas aplicado em farinha e farelo de trigo

“…Uma série de trabalhos vem sendo conduzidos no campo de controle de micro-organismos, modificação de propriedades tecnológicas de amidos e farinhas, melhoria de taxas de germinação de sementes e inativação enzimática. Todas estas aplicações são dependentes do tipo de equipamento gerador de plasma, condições de processamento, como a utilização de diferentes gases e as condições de pressão em que o sistema é operado (Bie et al, 2016;Carvalho et al, 2021;Misra et al, 2016;Sarangapani et al, 2016). Misra, Schlüter e Cullen (2016) reportam que além da possibilidade de uso de baixas temperaturas e não gerar resíduos de processos, também não utiliza água como solvente, possui baixo consumo energético e possui a versatilidade de poder ser aplicado em materiais sólidos e líquidos.…”