Chemical Papers

, Volume 74, Issue 2, pp 499–507 | Cite as

Enhancing isolation of p-coumaric and ferulic acids from sugarcane bagasse by sequential hydrolysis

  • Mingfu Li
  • Zhuan Jia
  • Guangcong Wan
  • Shuangfei Wang
  • Douyong MinEmail author
Original Paper


To improve the yield of p-coumaric acid (p-CA) and ferulic acid (FA), sequential alkaline and acid hydrolysis was applied to sugarcane bagasse. Gas chromatography-mass spectrometry was used to quantify p-CA and FA. The sequential hydrolysis isolated more p-CA and FA from sugarcane bagasse than did alkaline hydrolysis or acid hydrolysis alone. Ethyl acetate extracted more p-CA and FA than chloroform. Increased temperature improved the yield of p-CA and FA. The total yields of p-CA and FA from sugarcane bagasse were 4.38 and 0.79%, respectively. For p-CA, the ester and ether bonds accounted for 93.60% and 6.40% of the total linkages, respectively. For FA, the ester and ether bonds accounted for 51.90% and 48.10% of the total linkages, respectively. Cleavage of the bond between hydroxycinnamic acid (p-CA and FA) and lignin was also confirmed by 13C NMR through comparison with the spectra of milled wood lignin and alkaline-soluble lignin.


Sugarcane bagasse Sequential hydrolysis p-Coumaric acid Ferulic acid Lignin 



This project was financially supported by the Natural Science Foundation of China (no. 31400514), the Guangxi Science Foundation (no. 2018JJA130224), and the Foundation of Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control (no. ZR201805-7).

Compliance with ethical standards

Conflict of interest

The authors report no conflict of interest. The authors alone are responsible for the content and writing of the paper.


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Copyright information

© Institute of Chemistry, Slovak Academy of Sciences 2019

Authors and Affiliations

  1. 1.College of Light Industry and Food EngineeringGuangxi UniversityNanningPeople’s Republic of China
  2. 2.Guangxi Key Laboratory of Clean Pulp and Papermaking and Pollution ControlNanningPeople’s Republic of China

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