A Comparative Study on the Utilization of Corn Pericarp and Peanut Hull in the Production of Ethanol and the Impact on Food Economics

Herring, J.L. and Narayanan, V.C. (2016) A Comparative Study on the Utilization of Corn Pericarp and Peanut Hull in the Production of Ethanol and the Impact on Food Economics. Food and Nutrition Sciences, 7 (11). pp. 1010-1020.

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Abstract

Corn pericarp and peanut hull (lignocellulosic materials) which are food industry by-products were used as substrates in this study. Alkaline hydrogen peroxide (H2O2) pretreatments at 0%, 2.5% and 5% were used for the removal of lignin. Simultaneous Saccharification and Fermentation (SSF) and Separate Hydrolysis and Fermentation (SHF) were conducted using Aspergillus niger (strain 201201) and Saccharomyces cerevisiae (strain 26603). Aspergillus niger was added on day 1 to all samples with inoculation treatments of S. cerevisiae at one-day intervals (A = Day 1, B = Day 2, C = Day 3 and D = Day 4). Pretreatment with 2.5% H2O2 was more beneficial in the removal of lignin for both substrates. Corn pericarp yielded an ethanol concentration of 22.2 g/L in C and 21.78 g/L in D of 2.5% H2O2 pretreatment. Peanut hull with 2.5% H2O2 pretreatment in D yielded a higher concentration at 10.38 g/L compared to other inoculation treatments. The highest ethanol yielded on a percentage basis for corn pericarp was 45.04% in C of 2.5% H2O2 pretreatment and 24.6% in D of 2.5% H2O2 pretreatment for peanut hull.

Item Type: Article
Uncontrolled Keywords: Ethanol, Peanut Hull, Corn Pericarp, Alkaline Pretreatment, Fermentation
Author Affiliation: Department of Food & Animal Sciences, Alabama A&M University, Normal, AL, USA
Subjects: Social Sciences > Agricultural Economics
Crop Improvement
Divisions: Groundnut
Depositing User: Mr B Krishnamurthy
Date Deposited: 22 Nov 2016 06:10
Last Modified: 22 Nov 2016 06:10
Official URL: http://dx.doi.org/10.4236/fns.2016.711098
URI: http://eprints.icrisat.ac.in/id/eprint/14589

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