Comparative Study of the Yield of Reducing Sugar from Hydrolysis of XimeniacaffraSeedCoat and Phoenix dactylifera Stone Using Bioalkali Extracted from Plantain Peel

Yusuf O. Usman1, Kehinde I. Omoniyi2*, Nsi E. Nwokem2, Sule A. Maikano1, Calvin O. Nwokem3
1Basic Research Department, National Research Institute for Chemical Technology, Zaria, Kaduna State, Nigeria.
2Chemistry Department, Faculty of Physical Sciences, Ahmadu Bello University, Zaria, Kaduna State, Nigeria.
3Chemistry Department, Faculty of Sciences, Kaduna State University, Kaduna State, Nigeria.

Corresponding Author: [email protected]; Tel: +234 8036257789
Recieved Date: March 06, 2018; Accepted Date: April 06, 2018; Published Date: 07 April 2018
Citation: Usman YO, Omoniyi KI, Nwokem NE, Maikano SA, Nwokem CO. Comparative Study of the Yield of Reducing Sugar from Hydrolysis of Ximenia caffra Seed Coat and Phoenix dactylifera Stone Using Bioalkali Extracted from Plantain Peel. Trop J Nat Prod Res. 2018; 2(4):162-166.  https://doi.org//10.26538/tjnpr/v2i4.2
Copyright: © 2018 Usman et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
ABSTRACT

Lignocelluloses comprising cellulose, hemicelluloses, lignin among others can be pretreated with cost effective method to yield fermentable sugar, using waste agricultural residues as pretreatment chemical and substrates. This study was aimed at investigating the potential of bioalkali extracted from plantain (Musa paradisiaca) peel ash as a viable alternative alkaline reagent for the pretreatment of Ximenia caffra seed coat and Phoenix dactylifera stone. The ash of burnt plantain peel was characterized using x-ray fluorescence (XRF) spectroscopy with the oxide of potassium as the dominant oxide (54.2 wt%), the concentrations of the potash alkali (BioKOH) extracted were quantified titrimetrically. The Taguchi L9 orthogonal array design was used as the response surface method to design the hydrolysis process. The factors of BioKOH concentrations (0.022–1.950%), Solid to liquid ratio (1:30-1:90 cm3w/v) for varying treatment times (15–60 min) at a temperature of 121°C were optimized for the hydrolysis. The reducing sugar in the hydrolysates obtained was characterized using Fourier Transform Infrared Spectroscopy and measured using 3,5-dinitrosalicylic acid (DNS) method. The pretreatment condition of 0.022% BioKOH, 60 mins and 1:30 cm3w/v was determined to be the most effective as it utilized the least amount of BioKOH while generating 22.56 mg sugar/g of Phoenix dactylifera stone. The sour plum seed coat gave a better yield of 30.14 mg sugar/g for factors of BioKOH concentrations (0.022%), Solid to liquid ratio (1:60cm3w/v) for varying treatment times (15 min) at 121°C. Therefore, the plantain ash can serve as bioalkaline and can be scaled up for economic benefits.

Keywords: Date palm stone, Sour plum seed coat, Lignocellulose, Bioalkali (BioKOH), Plantain peel, Reducing sugars.
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ISSN: 2616-0684 (Print)
ISSN: 2616-0692 (Online)
DOI: 10.26538/tjnpr

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