Biosynthesis of poly(β-L-malic acid) from rubberwood enzymatic hydrolysates in co-fermentation by Aureobasidium pullulans
文献类型： 外文期刊
作者： Zeng, Dongdong 1 ; Zhang, Yutian 1 ; Ma, Xiaojun 1 ; Li, Jianing 2 ; Yin, Fen 3 ; Li, Dongna 1 ; Bie, Wenxuan 1 ;
作者机构： 1.Tianjin Univ Sci & Technol, Coll Light Ind Sci & Engn, Tianjin 300457, Peoples R China
2.Chinese Acad Trop Agr Sci, Rubber Res Inst, Danzhou 571737, Peoples R China
3.Qinghai Univ, Coll Mech Engn, Xining 810016, Peoples R China
关键词： Poly(beta-L-malic acid); Rubberwood enzymatic hydrolysates; Co-fermentation; Co-utilization
期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：8.2； 五年影响因子：7.8 ）
ISSN： 0141-8130
年卷期： 2024 年 257 卷
页码：
收录情况： SCI
摘要： Co-fermentation of multiple substrates has emerged as the most effective method to improve the yield of bioproducts. Herein, sustainable rubberwood enzymatic hydrolysates (RWH) were co-fermented by Aureobasidium pullulans to produce poly(beta-L-malic acid) (PMA), and RWH + glucose/xylose was also investigated as co-substrates. Owing to low inhibitor concentration and abundant natural nitrogen source content of RWH, a high PMA yield of 0.45 g/g and a productivity of 0.32 g/L/h were obtained by RWH substrate fermentation. After optimization, PMA yields following the fermentation of RWH + glucose and RWH + xylose reached 59.92 g/L and 53.71 g/L, respectively, which were 52 % and 36 % higher than that after the fermentation of RWH. RWH + glucose more significantly affected the correlation between PMA yield and substrate concentration than RWH + xylose. The results demonstrated that the co-fermentation of RWH co-substrate is a promising method for the synthesis of bioproducts.
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