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

作　　者：J. L. Herring V. C. Narayanan J. L. Herring;V. C. Narayanan(Department of Food & Animal Sciences, Alabama A&M University, Normal, AL, USA)

机构地区：[1]Department of Food & Animal Sciences, Alabama A&M University, Normal, AL, USA

出　　处：《Food and Nutrition Sciences》2016年第11期1010-1020,共11页食品与营养科学（英文）

摘　　要：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.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.

关 键 词：ETHANOL Peanut Hull Corn Pericarp Alkaline Pretreatment FERMENTATION 

分 类 号：F42[经济管理—产业经济]