Umudike Journal of Engineering and Technology

Michael Okpara University of Agriculture, Umudike


ACID HYDROLYSIS OF YAM PEELS AND HYDROLYSATE BIOCHEMICAL PROFILING: PROCESS KINETICS AND THERMODYNAMICS STUDIES

Ajala, M. A.
Department of Chemical Engineering, University of Ilorin, Ilorin, Nigeria

Ajala, E. O.
Department of Chemical Engineering, University of Ilorin, Ilorin, Nigeria

Onoriemu, O. O.
Department of Chemical Engineering, University of Ilorin, Ilorin, Nigeria

Adenuga, P.
Department of Chemical Engineering, University of Ilorin, Ilorin, Nigeria

Adepoju, L. A.
Department of Food Engineering, University of Ilorin, Ilorin, Nigeria



ABSTRACT

Yam peel (YP) was hydrolyzed using sulphuric acid at concentrations of 0.5, 1.0, and 1.5 M and temperatures of 70, 90, and 110oC for glucose syrup (GS) production. The kinetics and thermodynamics of the hydrolysis were investigated to check the statistical consistency of the process. The hydrolysate obtained as GS was characterized for its biochemical compositions. An ideal rate constant (k) of 0.07 was obtained at a temperature of 110oC and an acid concentration of 1.5 M, resulting in the highest GS of 46.44 g/l from a YP concentration of 50 g/l. The ANOVA findings showed that the acid concentrations and temperatures had a significant impact on the hydrolysis, with F > F critical (F critical = 18.51282) and a probability of


Keywords: Yam peels, hydrolysis, kinetics, thermodynamic, activation energy, and glucose syrup.


https://doi.org/10.33922/j.ujet_v9i2_1
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Published
Monday, November 06, 2023

Issue
Vol.9 No.2, December 2023

Article Section
GENERAL

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