Deconstruction of banana peel for carbohydrate fractionation
- PDF / 1,468,979 Bytes
- 10 Pages / 595.276 x 790.866 pts Page_size
- 82 Downloads / 241 Views
RESEARCH PAPER
Deconstruction of banana peel for carbohydrate fractionation Maria Angélica F. Pereira1 · Carla Roana M. Monteiro1 · Gabriela N. Pereira1 · Sidnei E. Bordignon Júnior1 · Eduardo Zanella2 · Patrícia F. Ávila3 · Boris U. Stambuk2 · Rosana Goldbeck3 · Débora de Oliveira1 · Patrícia Poletto1 Received: 8 July 2020 / Accepted: 6 September 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract The deconstruction of banana peel for carbohydrate recovery was performed by sequential treatment (acid, alkaline, and enzymatic). The pretreatment with citric acid promoted the extraction of pectin, resulting in a yield of 8%. In addition, xylose and XOS, 348.5 and 17.3 mg/g xylan, respectively, were also quantified in acidic liquor as a result of partial depolymerization of hemicellulose. The spent solid was pretreated with alkaline solution (NaOH or KOH) for delignification and release of residual carbohydrates from the hemicellulose. The yields of xylose and arabinose (225.2 and 174.0 mg/g hemicellulose) were approximately 40% higher in the pretreatment with KOH, while pretreatment with NaOH promoted higher delignification (67%), XOS yield (32.6 mg/g xylan), and preservation of cellulosic fraction. Finally, the spent alkaline solid, rich in cellulose (76%), was treated enzymatically to release glucose, reaching the final concentration of 28.2 g/L. The mass balance showed that through sequential treatment, 9.9 g of xylose, 0.5 g of XOS, and 8.2 g of glucose were obtained from 100 g of raw banana peels, representing 65.8% and 46.5% conversion of hemicellulose and cellulose, respectively. The study of the fractionation of carbohydrates in banana peel proved to be a useful tool for valorization, mainly of the hemicellulose fraction for the production of XOS and xylose with high value applications in the food industry. Keywords Banana peel · Hemicellulose · Xylooligosaccharides · Cellulose · Chemical pretreatment · Enzymatic hydrolysis
Introduction The banana (Musa acuminata) is an edible fruit with excellent acceptability, easy access, low cost, and available in large quantities, especially in tropical countries, where it is a common agricultural crop [1]. The amount of waste generated in banana processing is significant; in fact, the peel corresponds to 35–40% of the weight of the fresh fruit [2, 3]. In 2018, Brazil produced 6.7 million tons of bananas, which is equivalent to 2.7 million tons of peel generated [4]. This * Patrícia Poletto [email protected] 1
Laboratory of Biological Engineering, Department of Chemical and Food Engineering, UFSC – Federal University of Santa Catarina, Florianópolis, SC 88040‑970, Brazil
2
Yeast Molecular Biology and Biotechnology Laboratory, Department of Biochemistry, Federal University of Santa Catarina, Florianópolis, SC, Brazil
3
Laboratory of Bioprocess and Metabolic Engineering, Department of Faculty of Food Engineering, UNICAMP - University of Campinas, Campinas, SP 13083‑862, Brazil
type of agricultural waste is usually disposed in
Data Loading...
