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Valorization of the pelagic Sargassum horneri for co-production of erythritol and alginate oligosaccharides

文献类型： 外文期刊

作者： Zhang, Peng 1 ; Shen, Min-Chong 1 ; Zhang, Xin-Yue 2 ; Wang, Hai-Ying 3 ; Wang, Zhi-Peng 2 ;

作者机构： 1.Chinese Acad Agr Sci, Tobacco Res Inst, Qingdao 266101, Peoples R China

2.Qingdao Agr Univ, Sch Marine Sci & Engn, Qingdao 266109, Peoples R China

3.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Key Lab Sustainable Dev Polar Fishery, Minist Agr & Rural Affairs, Qingdao 266071, Peoples R China

关键词： Sargassum; Alginate lyase; Cellulase; Yarrowia lipolytica; Alginate oligosaccharides

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：11.4； 五年影响因子：10.6 ）

ISSN： 0960-8524

年卷期： 2023 年 379 卷

页码：

收录情况： SCI

摘要： Pelagic Sargassum is invasive macroalgae with huge biomass. To produce bulk chemicals with profit from the biomass, innovative strategies need to be developed. In this study, maximum saccharification yield of Sargassum horneri biomass was obtained with the combined use of 3% alginate lyase and 3% cellulase, releasing 20.83 g/L glucose and 1.73 g/L mannitol at a 1:6 feed ratio. Subsequently, the crude S. horneri hydrolysate (pH 3.0) was proved most suitable for erythritol production of Yarrowia lipolytica strain. After 60 h fermentation in a 10-L fermenter, the erythritol concentration reached 18.42 g/L with a yield of 0.82 g/g; while the concentration of alginate oligosaccharides (AOS) was 37.56 g/L. Finally, AOS with a purity of 93.4% were obtained by ethanol precipitation, and erythritol was harvested via crystallization. This proposed strategy demonstrates the feasibility of transforming invasive Sargassum into two high-value chemicals for the first time.

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