Citrus fruits such as lemon, orange, grapefruit, and tangerine are consumed for their flavor, low cost, and human health benefits. However, citrus juice extraction generates by-products that are mostly unused and is discharged in landfills. In this study, the by-products of lemon, orange, grapefruit, and tangerine were subjected to solid-state fermentation (SSF) using Fusarium oxysporum, Penicillium purpurogenum GH2, Trichoderma harzianum T1-04, and Aspergillus niger GH1 to enhance their antioxidant activity. After fermentation, ethanol extracts were obtained and tested for their antioxidative activity by employing three techniques, 2,2-diphenyl-1-picrylhydrazyl (DPPH˙), ferric reducing antioxidant power (FRAP), and lipid oxidation inhibition (LOI). An increase in antioxidant activity from 33.13 to 41.62 mg/gmsi of antioxidants after fermentation of tangerine by-products by A. niger GH1 was observed. Major compounds present in ethanol extracts obtained after fermentation by A. niger GH1were identified by HPLC-MS, and their m/z corresponded to chlorogenic acid, didymin, naringin, and hesperidin. These results indicated that SSF is a suitable method to enhance antioxidant activity of citrus by-products.
CITATION STYLE
Larios-Cruz, R., Rodríguez-Jasso, R. M., Ruiz, H. A., Prado-Barragán, A., Wong-Paz, J. E., Rodríguez-Herrera, R., … Aguilar, C. N. (2018). Utilization of Citrus Waste Biomass for Antioxidant Production by Solid-State Fermentation. In Energy, Environment, and Sustainability (pp. 83–96). Springer Nature. https://doi.org/10.1007/978-981-10-7431-8_5
Mendeley helps you to discover research relevant for your work.