Kinetic Study of the Fermentation of Cassava Whey
Journal Title: American journal of Engineering Research - Year 2018, Vol 7, Issue 4
Abstract
This project work is about the qualitative analysis and fermentation of cassava whey (a milky liquor that results from the pressing of freshly ground cassava) to produce ethanol using saccharomyces cerevisiae yeast. Qualitative analysis was carried out on the cassava whey to confirm the presence of starch, reducing sugar, protein and lipid. Also, the pH of the cassava whey was obtained to be 5.83 showing that it was slightly acidic. The density was obtained to be 1.028g/l and the moisture content was obtained as 82.3%. Acid hydrolysis was carried out using distilled water and 2.5M HCl on the cassava whey to break down the bonds of the starch. The pH was afterwards neutralized using 2.5M NaOH to correct the pH. The hydrolyzed cassava whey was sterilized using an autoclave, and yeast was introduced into the medium to begin the fermentation process. During the fermentation, samples were collected every 24 hours to monitor the concentration of the glucose, ethanol and yeast. From the results, it was noticed to follow the supposed pattern. The glucose depleted because it is the substrate that the yeast feeds on, the yeast increased and the product formed was the ethanol. The log phase of the yeast growth was used to obtain the Michelis Menten constant as 29.85 and the maximum reaction rate as 0.025g/l.hour.
Authors and Affiliations
Anusi M. O, Oyoh K. B, Okoli F. C, Nkuzinna O, Njoku C. N
Keywords
Related Articles
- EP ID EP396782
- DOI -
- Views 38
- Downloads 0
Experimental investigation of the conductor temperature of the underground cable situated in sand and pipes
The aim of this study is to present a new method for the underground cable installation. In this work, we have investigated the steady state temperature field when the underground cable 12/20 (24) KV located in three mod...
Analysis of Transit User Satisfaction using Structural Equation Models
This study aims to understand the relationships among various transit system and service variabl es and transit user satisfaction. The dataset is utilized to test the hypothesis postulated in this study using Struct ural...
Empirical Modeling Of 4-Dimensional Relationship For Dried Palm Nut Of Dura Variety
The dried and ready to cracked palm nuts of the Dura variety was investigated for dimensional relationship existing between its minor axis, intermediate axis, major axis and shell thickness. The relationship can assist i...
Analysis of Improvement in Aerodynamics of a Vehicle Type Baja SAE - And the Impact on Performance
The constant search for greater efficiency in any type of project, is one of the top searches of a professional in engineering, this being linked directly to cost reduction, performance improvement and analysis from an e...
Effects of Fire Outbreak, Gas Flaring, And Global Warmings on Building and Structures
The effect of fire outbreak, gas flaring and global warming on building and environment has been considered. Different residential, commercial and industrial buildings were considered at insitu fire gutted conditions and...