Correlation between bio-hydrogen production and polyhydroxybutyrate (PHB) synthesis by Rhodopseudomonas palustris WP3-5

Wu, Siang Chen; Liou, Syuan Zih; Lee, Chi Mei

doi:10.1016/j.biortech.2012.01.090

Cited by 91 publications

(40 citation statements)

References 33 publications

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“…Rhodopseudomonas palustris WP3-5 was studied by Wu et al [176] to evaluate possible competition between PHB synthesis and H 2 production, testing cultures on six different substrates, such as acetate, propionate, malate, lactate, glucose, and lactose. The results highlighted that strain WP3-5 could utilize acetate, propionate, malate, and lactate to produce H 2 , whereas it was also able to synthesize PHB only on acetate and propionate.…”

Section: Integrated Systems For Bioenergy Production From Industrial mentioning

confidence: 99%

Integrated systems for biopolymers and bioenergy production from organic waste and by-products: a review of microbial processes

Pagliano

Ventorino

Pánico

et al. 2017

Biotechnol Biofuels

141

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Recently, issues concerning the sustainable and harmless disposal of organic solid waste have generated interest in microbial biotechnologies aimed at converting waste materials into bioenergy and biomaterials, thus contributing to a reduction in economic dependence on fossil fuels. To valorize biomass, waste materials derived from agriculture, food processing factories, and municipal organic waste can be used to produce biopolymers, such as biohydrogen and biogas, through different microbial processes. In fact, different bacterial strains can synthesize biopolymers to convert waste materials into valuable intracellular (e.g., polyhydroxyalkanoates) and extracellular (e.g., exopolysaccharides) bioproducts, which are useful for biochemical production. In particular, large numbers of bacteria, including Alcaligenes eutrophus, Alcaligenes latus, Azotobacter vinelandii, Azotobacter chroococcum, Azotobacter beijerincki, methylotrophs, Pseudomonas spp., Bacillus spp., Rhizobium spp., Nocardia spp., and recombinant Escherichia coli, have been successfully used to produce polyhydroxyalkanoates on an industrial scale from different types of organic by-products. Therefore, the development of high-performance microbial strains and the use of by-products and waste as substrates could reasonably make the production costs of biodegradable polymers comparable to those required by petrochemical-derived plastics and promote their use. Many studies have reported use of the same organic substrates as alternative energy sources to produce biogas and biohydrogen through anaerobic digestion as well as dark and photofermentation processes under anaerobic conditions. Therefore, concurrently obtaining bioenergy and biopolymers at a reasonable cost through an integrated system is becoming feasible using by-products and waste as organic carbon sources. An overview of the suitable substrates and microbial strains used in low-cost polyhydroxyalkanoates for biohydrogen and biogas production is given. The possibility of creating a unique integrated system is discussed because it represents a new approach for simultaneously producing energy and biopolymers for the plastic industry using by-products and waste as organic carbon sources.

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Section: Integrated Systems For Bioenergy Production From Industrial mentioning

confidence: 99%

Integrated systems for biopolymers and bioenergy production from organic waste and by-products: a review of microbial processes

Pagliano

Ventorino

Pánico

et al. 2017

Biotechnol Biofuels

141

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“…Among the different ways of producing H 2 from biomass, the use of Purple Non-Sulfur Bacteria (PNSB) such as Rhodobacter sphaeroides has been widely known due to their metabolic versatility, wide range of substrate utilization (Das and Veziroglu, 2001) and high product purity (Kars and Gunduz, 2010;Wu et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Photoheterotrophic Hydrogen Production of <i>Rhodobacter sphaeroides</i> KCTC 1434 using Volatile Fatty Acids under Argon and Nitrogen Headspace

Ventura¹,

Ventura²,

Oh³

2016

American Journal of Environmental Sciences

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Abstract:In this study, the photo fermentative H 2 production of Rhodobacter sphaeroides KCTC 1434 was investigated using acetate, propionate and butyrate under argon and nitrogen headspace gases. The highest H 2 yield and Substrate Conversion Efficiency (SCE) were observed from butyrate (8.84 mol H 2 /mol butyrate consumed, 88.42% SCE) and propionate (6.10 mol H 2 /mol propionate consumed, 87.16% SCE) under Ar headspace. Utilization of acetate was associated with low H 2 evolution, high biomass yield and high final pH, which suggest that acetate uptake by the strain involves a biosynthetic pathway that competes with H 2 production. The use of N 2 in sparging resulted to a decreased H 2 productivity in propionate (0.49 mol H 2 /mol propionate consumed, 7.01% SCE) and butyrate (1.22 mol H 2 /mol butyrate consumed, 1.04% SCE) and was accompanied with high biomass yield and radical pH increase in all acids. High H 2 generation had shown to improve acid consumption rate. The use of the three acids in a mixed substrate resulted to a drastic pH rise and lower H 2 generation. This suggests that a more refined culture condition such as additional control of pH during fermentation must be kept to enhance the H 2 productivity. Overall, the study provided a background on the H 2 production using R. sphaeroides KCTC 1434 which might be a good co-culture candidate because of its high SCE on butyrate and propionate.

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“…Bacterial CE Acetate→PHB and CE Glucose→PHB levels of 26% and 36–42% (w/w), respectively, have been described previously, but these bacteria also required other composite organic substrates, such as yeast extract and/or peptone, in the media for PHB production8926. The CE Glucose→PHB above the theoretical value at 52% (w/w) was reported in the bacterium Halomonas TD01, but again this bacterium required yeast extract as a composite organic substrate for the PHB production10.…”

Section: Discussionmentioning

confidence: 73%

Two-stage (photoautotrophy and heterotrophy) cultivation enables efficient production of bioplastic poly-3-hydroxybutyrate in auto-sedimenting cyanobacterium

Monshupanee

Nimdach

Incharoensakdi

2016

Sci Rep

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Sustainable production of bioplastics by heterotrophic microbes has been restricted by the limited resources of organic substrates and the energy required for biomass harvest. Here, the easy-to-harvest cyanobacterium (Chlorogloea fritschii TISTR 8527), from which the biomass instantaneously settled to the bottom of liquid culture, was utilized to produce poly-3-hydroxybutyrate (PHB) using a two-stage cultivation strategy. The cells were first pre-grown under normal photoautotrophy to increase their biomass and then recultivated under a heterotrophic condition with a single organic substrate to produce the product. Through optimization of this two-stage cultivation, the mass conversion efficiency of acetate substrate to PHB was obtained at 51 ± 7% (w/w), the comparable level to the theoretical biochemical conversion efficiency of acetate to PHB. This two-stage cultivation that efficiently converted the substrate to the product, concurrent with a reduced culture biomass, may be applicable for the production of other biopolymers by cyanobacteria.

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Correlation between bio-hydrogen production and polyhydroxybutyrate (PHB) synthesis by Rhodopseudomonas palustris WP3-5

Cited by 91 publications

References 33 publications

Integrated systems for biopolymers and bioenergy production from organic waste and by-products: a review of microbial processes

Integrated systems for biopolymers and bioenergy production from organic waste and by-products: a review of microbial processes

Investigation of the Photoheterotrophic Hydrogen Production of <i>Rhodobacter sphaeroides</i> KCTC 1434 using Volatile Fatty Acids under Argon and Nitrogen Headspace

Two-stage (photoautotrophy and heterotrophy) cultivation enables efficient production of bioplastic poly-3-hydroxybutyrate in auto-sedimenting cyanobacterium

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