Enhancement of converting corn stalk into reducing sugar by ultrasonic-assisted ammonium bicarbonate pretreatment

Youzhou Jiao; Chengpu Guo; Shaopeng Wang; Shanyue Guan; Xiaohui Pan; Xiaoran Ma; Zhiping Zhang; Quanguo Zhang; Chao He

doi:10.1016/j.biortech.2020.122878

Enhancement of converting corn stalk into reducing sugar by ultrasonic-assisted ammonium bicarbonate pretreatment

Bioresour Technol. 2020 Apr:302:122878. doi: 10.1016/j.biortech.2020.122878. Epub 2020 Jan 23.

Authors

Youzhou Jiao¹, Chengpu Guo¹, Shaopeng Wang¹, Shanyue Guan¹, Xiaohui Pan¹, Xiaoran Ma¹, Zhiping Zhang¹, Quanguo Zhang¹, Chao He²

Affiliations

¹ Key Laboratory of New Materials and Facilities for Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, College of Mechanical & Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China; Henan International Joint Laboratory of Biomass Energy and Nanomaterials, Zhengzhou 450002, China.
² Key Laboratory of New Materials and Facilities for Rural Renewable Energy, Ministry of Agriculture and Rural Affairs, College of Mechanical & Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China; Henan International Joint Laboratory of Biomass Energy and Nanomaterials, Zhengzhou 450002, China. Electronic address: [email protected].

PMID: 32014318
DOI: 10.1016/j.biortech.2020.122878

Abstract

In order to improve the yield of reducing sugar from corn stalk, ultrasonic-assisted ammonium bicarbonate pretreatment of corn stalk was proposed. Three ultrasonic factors (time (0-30 min), temperature (30-60 °C) and liquid/solid mass ratio (5-20)) were optimized by response surface experiment. The optimal conditions of ultrasonic pretreatment were obtained (liquid/solid mass ratio is 12:1, temperature is 42 °C and time is 11 min). The highest saccharification rate of corn stalk was of 82.61%, which was remarkably increased by 355% compared to the control group.

Keywords: Ammonium bicarbonate; Pretreatment; Reducing sugar; Response surface analysis; Ultrasonic-assisted.

MeSH terms

Bicarbonates
Carbohydrates
Hydrolysis
Sugars*
Ultrasonics
Zea mays*

Substances

Bicarbonates
Carbohydrates
Sugars
ammonium bicarbonate