Gamma Irradiation Induced Degradation of Orange Peels

Raymundo Sánchez Orozco, Patricia Balderas Hernández, Nelly Flores Ramírez, Gabriela Roa Morales, Jaime Saucedo Luna and Agustín Jaime Castro Montoya
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Raymundo Sánchez Orozco: Faculty of Chemistry, Autonomous University of the State of Mexico, Paseo Colón esq., Paseo Tollocan s/n, Col. Residencial Colón, C.P. 50120 Toluca, Estado de México, Mexico
Patricia Balderas Hernández: Faculty of Chemistry, Autonomous University of the State of Mexico, Paseo Colón esq., Paseo Tollocan s/n, Col. Residencial Colón, C.P. 50120 Toluca, Estado de México, Mexico
Nelly Flores Ramírez: Faculty of Wood Engineering and Technology, University Michoacana of San Nicolas of Hidalgo, Edif. D, Cd. Universitaria, C.P. 58060 Morelia, Michoacán, Mexico
Gabriela Roa Morales: Faculty of Chemistry, Autonomous University of the State of Mexico, Paseo Colón esq., Paseo Tollocan s/n, Col. Residencial Colón, C.P. 50120 Toluca, Estado de México, Mexico
Jaime Saucedo Luna: Faculty of Chemical Engineering, University Michoacana of San Nicolas of Hidalgo, Edif. V-1, Cd. Universitaria, C.P. 58060 Morelia, Michoacán, Mexico
Agustín Jaime Castro Montoya: Faculty of Chemical Engineering, University Michoacana of San Nicolas of Hidalgo, Edif. V-1, Cd. Universitaria, C.P. 58060 Morelia, Michoacán, Mexico

Energies, 2012, vol. 5, issue 8, 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
Citations: View citations in EconPapers (3)

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