评估 holocellulose 作为可再生原料保护辐射松球果生产生物乙醇。
Assessment of holocellulose for the production of bioethanol by conserving Pinus radiata cones as renewable feedstock.
机构信息
Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel.
Department of Chemistry, Bar-Ilan University, Ramat-Gan 52900, Israel; National Cheng Kung University, Department of Materials Science and Engineering, Tainan 70101, Taiwan.
出版信息
J Environ Manage. 2015 Oct 1;162:215-20. doi: 10.1016/j.jenvman.2015.07.038. Epub 2015 Aug 3.
Renewable and green energy sources are much sought. Bioethanol is an environmentally friendly transportation fuel. Pine cones from Pinus radiata were shown to be a potential feedstock for the production of bioethanol. Alkaline (NaOH) pretreatment was carried out to delignify the lignocellulosic material and generate holocellulose (72 wt. % yield). The pretreated biomass was hydrolysed using HCl as catalyst under microwave irradiation and hydrothermal conditions. Microwave irradiation was found to be better than the hydrothermal process. Microwave irradiation accelerated the hydrolysis of biomass (42 wt. % conversion) with the reaction conditions being 3 M HCl and 5 min of irradiation time. Interestingly, even the xylose, which is the major component of the hydrolyzate was found to be metabolized to ethanol using Baker's yeast (Saccharomyces cerevisiae) under the experimental conditions. 5.7 g of ethanol could be produced from 100 g of raw pine cones.
可再生和绿色能源备受追捧。生物乙醇是一种环保型交通燃料。辐射松的松果被证明是生产生物乙醇的潜在原料。采用碱性（NaOH）预处理去除木质纤维素材料中的木质素，得到全纤维素（产率为 72wt.%）。预处理后的生物质在微波辐射和水热条件下使用 HCl 作为催化剂进行水解。结果表明，微波辐射优于水热过程。微波辐射加速了生物质的水解（转化率为 42wt.%），反应条件为 3M HCl 和 5 分钟的辐射时间。有趣的是，即使是水解产物中主要成分木糖，也可以在实验条件下使用酿酒酵母（Saccharomyces cerevisiae）代谢为乙醇。从 100g 生松果中可以生产 5.7g 的乙醇。
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