Bioprocess optimization of PHB homopolymer and copolymer P3 (HB-co-HV) by Acinetobacter junii BP25 utilizing rice mill effluent as sustainable substrate

被引：22

作者：

Sabapathy, Poorna Chandrika ^{[1
]}

Devaraj, Sabarinathan ^{[1
]}

Parthiban, Anburajan ^{[2
]}

Kathirvel, Preethi ^{[1
]}

机构：

[1] Bharathiar Univ, Dept Microbial Biotechnol, Coimbatore 641046, Tamil Nadu, India

[2] Daegu Univ, Sustainable Environm Proc Res Inst, Dept Civil Engn, Gyongsan, South Korea

来源：

ENVIRONMENTAL TECHNOLOGY | 2018年 / 39卷 / 11期

关键词：

Polyhydroxyalkanoates; rice mill effluent; copolymer; process optimization; sustainable substrate; POLY-BETA-HYDROXYBUTYRATE; WASTE-WATER; POLYHYDROXYALKANOATE PHA; RALSTONIA-EUTROPHA; ACTIVATED-SLUDGE; ALCALIGENES-EUTROPHUS; CARBON-SOURCES; BATCH CULTURE; OIL; POLY(BETA-HYDROXYBUTYRATE);

D O I：

10.1080/09593330.2017.1330902

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The potential use of parboiled rice mill effluent as a cheap substrate for the production of homopolymer and copolymer of Polyhydroxyalkanoates (PHAs) by Acinetobacter junii BP 25 was investigated for the first time. Process optimization by one factor at a time led to homopolymer polyhydroxybutyrate (PHB) production of 2.64 +/- 0.18 g/l with 94.28% PHB content using a two-stage batch cultivation mode. BP 25 furthermore produced polyhydroxybutyrate-co-hydroxyvalerate (P3 (HB-co-HV)), with the addition of valeric acid as an additive to the substrate, yielding (2.56 +/- 0.12 g/l dry biomass, 2.20 +/- 0.15 g/l PHA) a copolymer content of 85.93%. Thus, rice mill effluent can be an effective and relatively low-cost alternative for the production of PHA, replacing the pure substrates.

引用

页码：1430 / 1441

页数：12