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Chemistry and Industry of Forest Products ›› 2018, Vol. 38 ›› Issue (3): 63-68.doi: 10.3969/j.issn.0253-2417.2018.03.008

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Preparation of Ethyl Glycosides and Phenolic Products by Pressurized Liquefaction of Bamboo Biomass

MA Yan1, TAN Weihong1, FENG Guodong1, XU Junming1,2, WANG Kui1, JIANG Jianchun1,2   

  1. 1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab. for Biomass Chemical Utilization;Key and Open Lab. of Forest Chemical Engineering, SFA;Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China;
    2. Jiangsu Qianglin Bio-energy and Bio-materials Co., Ltd., Liyang 213364, China
  • Received:2017-12-25 Online:2018-06-25 Published:2018-06-22

Abstract: The liquefaction of bamboo biomass was investigated using ethanol as solvent with H2SO4 as catalyst in a 250 mL autoclave. The effects of different reaction conditions on the bamboo liquefaction were investigated. The results showed that optimum liquefaction conditions were catalyst dosage 5%, reaction temperature 180℃, reaction time 30 min. Under the circumstances, the yield of ethyl glycoside and phenolic products were 39.86% and 20.7%, respectively, with liquefaction ratio of 69.67%. The liquefied mixture was further separated by neutralization and step-wise separation process. Two platform chemicals, ethyl glycosides and phenolic products were obtained. The main compositions of phenolic products identified by GC-MS were 2,6-dimethoxyphenol, 3,5-dimethoxy-4-hydroxyphenylacetic acid, 4-allyl-2,6-dimethoxyphenol, and aspidinol et al, which accounting for 80% of the phenolic products. Five carbon sugars (furan glycosides) and six carbon sugars (glucopyranose and galactopyranoside) were the predominant products in glucosides, which accounting for 88.62% of the glycosides.

Key words: bamboo biomass, liquefaction, glycosides, phenolic compounds

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