University Links: Home Page | Site Map
Covenant University Repository


Ojewumi, M. E. and Emetere, Moses and Amaefule, C. V. and Durodola, B. M. and Adeniyi, Olalekan D. (2018) BIOCONVERSION OF ORANGE PEEL WASTE BY ESCHERICHIA COLI AND SACCHAROMYCES CEREVISIAE TO ETHANOL. International Journal of Pharmaceutical Sciences and Research . ISSN E-ISSN: 0975-8232; P-ISSN: 2320-5148 (In Press)

[img] PDF
Download (426Kb)


An alternative energy sources using the sweet orange (Citrus sinensis (L.) waste as the feedstock was investigated, this is an approach to environmental protection. The extraction of pectin from sweet orange peel waste (pith) and the production of ethanol from the resultant liquid pectin with the aid of Escherichia coli (E.coli) and Saccharomyces cerevisiae (yeast) were carried out. Dried pith was separated using various particle sizes ranging from 0.075, 0.5, 1.0 and 5 mm. It was observed that pith with particle size of 1.0 mm produced a larger volume of pectin while the pith with particle size of 0.075 mm produced the least volume of pectin. 1,770 mL pectin was obtained from 802 g of pith, this shows that citrus fruit (especially orange) contains a high amount of pectin. E.coli (bacteria), yeast (fungus) and a mixture of both were added to the produced pectin which was fermented to Ethanol. It was however noticed that sample pectin + E.coli + yeast and sample pectin + E.coli produced a good volume of ethanol but sample pectin only and sample pectin + yeast did not produce ethanol. The energy content of the total produced ethanol is 1526.6 btu which can be mixed with pure gasoline to obtain an optimum energy content that can be used to power a citrus processing plant in Nigeria. The purpose of this paper is to obtain an alternative energy source for citrus plants using the waste generated by them such as Orange peel.

Item Type: Article
Uncontrolled Keywords: Escherichia coli, Ethanol; Pectin, Pith, Orange peel, Saccharomyces cerevisiae, GC-MS
Subjects: A General Works > AC Collections. Series. Collected works
Q Science > QD Chemistry
T Technology > TP Chemical technology
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Dr. Modupe Elizabeth Ojewumi
Date Deposited: 21 Sep 2018 09:50
Last Modified: 21 Sep 2018 09:50

Actions (login required)

View Item View Item