Ma Chunhui, Li Wei, Zu Yuangang, Yang Lei, Li Jian
State Engineering Laboratory for Bioresource Eco-Utilization, Northeast Forestry University, Harbin 150040, China.
College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, China.
Molecules. 2014 Dec 12;19(12):20821-38. doi: 10.3390/molecules191220821.
Sustainable development of renewable resources is a major challenge globally. Biomass is an important renewable energy source and an alternative to fossil fuels. Pyrolysis of biomass is a promising method for simultaneous production of biochar, bio-oil, pyroligneous acid (PA), and gaseous fuels. The purpose of this study was to investigate the pyrolysis process and products yields of Schisandra chinensis fruits with different pyrolysis powers. The obtained PA was extracted with organic solvents, including ethyl formate, dichloromethane, methanol and tetrahydrofuran. The antioxidant activities, including the free radical scavenging activity and ferric reducing power, of the PA extracts were investigated. The synthetic antioxidants butylated hydroxyanisole and butylated hydroxytoluene were used as positive controls. A dichloromethane extract of PA showed excellent antioxidant properties compared to the other extracts. The chemical compositions of the PA extracts were determined by GC-MS, and further proved that the dichloromethane extract had the best antioxidant characteristics among the extracts tested.
可再生资源的可持续发展是全球面临的一项重大挑战。生物质是一种重要的可再生能源，也是化石燃料的替代品。生物质热解是一种同时生产生物炭、生物油、木醋液（PA）和气态燃料的有前景的方法。本研究的目的是考察不同热解功率下五味子果实的热解过程及产物产率。用甲酸乙酯、二氯甲烷、甲醇和四氢呋喃等有机溶剂对所得的PA进行萃取。考察了PA提取物的抗氧化活性，包括自由基清除活性和铁还原能力。合成抗氧化剂丁基羟基茴香醚和丁基羟基甲苯用作阳性对照。与其他提取物相比，PA的二氯甲烷提取物表现出优异的抗氧化性能。通过气相色谱-质谱联用仪（GC-MS）测定了PA提取物的化学成分，进一步证明二氯甲烷提取物在所测试的提取物中具有最佳的抗氧化特性。
