An integrated process for the extraction of fuel and chemicals from marine macroalgal biomass.
An integrated process for the extraction of fuel and chemicals from marine macroalgal biomass.
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DOI：
10.1038/srep30728
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发表时间：
2016-07-29
影响因子：
4.6
通讯作者：
Jha B
中科院分区：
文献类型：
--
作者：
Trivedi N;Baghel RS;Bothwell J;Gupta V;Reddy CR;Lali AM;Jha B
我们描述了一个集成的过程，可以应用于生物质的绿色海藻，石莼fasciata，允许连续回收四个经济上重要的馏分;富含矿物质的液体提取物（MRLE），脂质，石莼多糖，和纤维素。我们的方法的主要优点是：a）其简单性和B）在每个连续的提取步骤之后从残余生物质获得的一致的产率。例如，干石莼生物质的MRLE产量约为其起始质量的26%，脂质产量约为3%，石莼聚糖产量约为25%，纤维素产量约为11%，最终纤维素部分在优化条件下进行酶解和发酵，产生乙醇具有竞争力的0.45克/克还原糖。这些产率与直接加工初级生物质中的各个成分获得的产率相当。我们建议，这种一体化的乙醇生产和化学原料回收从大型藻类生物质可以大大提高海洋生物质利用的可持续性。
We describe an integrated process that can be applied to biomass of the green seaweed, Ulva fasciata, to allow the sequential recovery of four economically important fractions; mineral rich liquid extract (MRLE), lipid, ulvan, and cellulose. The main benefits of our process are: a) its simplicity and b) the consistent yields obtained from the residual biomass after each successive extraction step. For example, dry Ulva biomass yields ~26% of its starting mass as MRLE, ~3% as lipid, ~25% as ulvan, and ~11% as cellulose, with the enzymatic hydrolysis and fermentation of the final cellulose fraction under optimized conditions producing ethanol at a competitive 0.45 g/g reducing sugar. These yields are comparable to those obtained by direct processing of the individual components from primary biomass. We propose that this integration of ethanol production and chemical feedstock recovery from macroalgal biomass could substantially enhance the sustainability of marine biomass use.