Gamma Irradiation Induced Degradation of Orange Peels

Author

Raymundo Sánchez Orozco (rsanchez_o@yahoo.com.mx), Patricia Balderas Hernández (pbalderash@uaemex.mx), Nelly Flores Ramírez (fr_nelly@yahoo.com), Gabriela Roa Morales (gabyroamo@yahoo.com.mx), Jaime Saucedo Luna (jsaucedo@umich.mx) and Agustín Jaime Castro Montoya (ajcastro@umich.mx)
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Energies, 2012, vol. 5, issue 8, pages 1-13

Abstract: In this study, gamma irradiation induced degradation of orange peels (OP) was investigated. The lignocellulosic biomass degradation was carried out at doses of 0 (control), 600, 1800 and 3500 kGy using a Co-60 gamma radiation source. The samples were tested for total and reducing sugars. The concentrations of total sugars ranged from 0.530 g∙g −1 in control sample to 0.382 g∙g −1 of dry weight in the sample which received the highest radiation dose. The reducing sugars content varying from 0.018 to 0.184 g∙g −1 of dry weight with the largest rise occurring in the sample irradiated at 3500 kGy. The concentrations of sucrose, glucose and fructose were determined. The changes generated in physico-chemical properties were determined by Fourier Transform Infrared Spectroscopy (FTIR) and termogravimetric analysis (TG-DTG). The results show that OP was affected, but not significantly, which suggests that lignocellulose and sugars profiles were partially degraded after gamma irradiation.

Keywords: orange peel; gamma irradiation; cellulose; hemicelluloses; degradation; reducing sugars; fructose (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2012
References: View complete reference list from CitEc
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