Optimized biosynthesis of xanthan via effective valorization of orange peels using response surface methodology: A kinetic model approach

Ali Mohsin; Kuipu Zhang; Junlang Hu; Salim-Ur-Rehman; Muhammad Tariq; Waqas Qamar Zaman; Imran Mahmood Khan; Yingping Zhuang; Meijin Guo

doi:10.1016/j.carbpol.2017.11.076

Optimized biosynthesis of xanthan via effective valorization of orange peels using response surface methodology: A kinetic model approach

Carbohydr Polym. 2018 Feb 1:181:793-800. doi: 10.1016/j.carbpol.2017.11.076. Epub 2017 Nov 22.

Authors

Ali Mohsin¹, Kuipu Zhang², Junlang Hu³, Salim-Ur-Rehman⁴, Muhammad Tariq⁵, Waqas Qamar Zaman⁶, Imran Mahmood Khan⁷, Yingping Zhuang⁸, Meijin Guo⁹

Affiliations

¹ State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, PR China. Electronic address: alimohsin@ecust.edu.cn.
² State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, PR China. Electronic address: kpzhangbio@163.com.
³ State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, PR China. Electronic address: Y30141125@mail.ecust.edu.cn.
⁴ National Institute of Food Science and Technology, University of Agriculture, Faisalabad, 38040, Pakistan. Electronic address: drsalim_rehman@yahoo.com.
⁵ State Key Laboratory of Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, PR China. Electronic address: muhammad.tariq@uog.edu.pk.
⁶ State Key Laboratory of Environmental Engineering, East China University of Science and Technology, Shanghai, 200237, PR China. Electronic address: wqz736@qq.com.
⁷ National Institute of Food Science and Technology, University of Agriculture, Faisalabad, 38040, Pakistan. Electronic address: imk2654@hotmail.com.
⁸ State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, PR China. Electronic address: ypzhuang@ecust.edu.cn.
⁹ State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai, 200237, PR China. Electronic address: guo_mj@ecust.edu.cn.

PMID: 29254038
DOI: 10.1016/j.carbpol.2017.11.076

Abstract

Herein, an enhanced green production of xanthan gum has been achieved by utilizing orange peels. Response surface methodology and kinetic modeling were adapted for the process optimization and its influence on scale up production respectively. Optimal conditions for the maximum xanthan production were 1.62% acid hydrolysis, 85% carbon source of orange peel hydrolysate and 30.4°C temperature. Furthermore, the optimized treatment was conducted in the batch culture fermentor to observe the associated variations during scale up process. In bio-fermentor, to the first time ever, xanthan production along with reducing sugar conversion and utilization rates reached 30.19g/L, 69.29% and 99.99%, respectively. Employed characterization techniques of FTIR, XRD and HPLC confirmed the fermented product as xanthan gum and obtained an average molecular weight of 1.01×10⁶g/mol. This work on account of optimized process parameters presented maximum xanthan production from a waste material.

Keywords: Fermentation; Orange peel; Response surface methodology and kinetic analysis; Xanthan gum.