Continuous cultivation of photosynthetic bacteria for fatty acids production

Kim, Dong-Hoon; Lee, Chang Kyu; Hwang, Yuhoon; Kang, Seoktae; Kim, Mi-Sun

doi:10.1016/j.biortech.2013.08.078

Cited by 25 publications

(14 citation statements)

References 35 publications

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“…Acetate and Aji-L were the favored carbon and nitrogen sources to produce high cell concentrations (Table 1). Higher lipid production was supported by enhancing biomass concentration using a photo-heterotrophic cultivation system (Kim et al, 2013).…”

Section: Resultsmentioning

confidence: 99%

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Photo-hydrogen and lipid production from lactate, acetate, butyrate, and sugar manufacturing wastewater with an alternative nitrogen source byRhodobactersp.KKU-PS1

Assawamongkholsiri¹,

Reungsang

Sittijunda

2019

PeerJ

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Photo-hydrogen and lipid production from individual synthetic volatile fatty acids (VFAs) and sugar manufacturing wastewater (SMW) by Rhodobacter sp. KKU-PS1 with sodium glutamate or Aji-L (i.e., waste from the process of crystallizing monosodium glutamate) as a nitrogen source was investigated. Using individual synthetic VFAs, the maximum hydrogen production was achieved with Aji-L as a nitrogen source rather than sodium glutamate. The maximum hydrogen production was 1,727, 754 and 1,353 mL H2/L, respectively, using 25 mM of lactate, 40 mM of acetate and 15mM of butyrate as substrates. Under these conditions, lipid was produced in the range of 10.6–16.9% (w/w). Subsequently, photo-hydrogen and lipid production from SMW using Aji-L as nitrogen source was conducted. Maximal hydrogen production and hydrogen yields of 1,672 mL H2/L and 1.92 mol H2/mol substrate, respectively, were obtained. Additionally, lipid content and lipid production of 21.3% (w/w) and 475 mg lipid/L were achieved. The analysis of the lipid and fatty acid components revealed that triacyglycerol (TAG) and C18:1 methyl ester were the main lipid and fatty acid components, respectively, found in Rhodobacter sp. KKU-PS1 cells.

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Section: Resultsmentioning

confidence: 99%

“…Therefore, biomass can be harvested from the final stage of hydrogen generation process, and lipid can be extracted as a by-product. These lipids are suitable for use as precursors for biodiesel production (Carlozzi et al, 2010; Kim et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Photo-hydrogen and lipid production from lactate, acetate, butyrate, and sugar manufacturing wastewater with an alternative nitrogen source byRhodobactersp.KKU-PS1

Assawamongkholsiri¹,

Reungsang

Sittijunda

2019

PeerJ

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“…The interest in the photosynthetic capacity of R. sphaeroides has stimulated its potential application for biofuel and bioplastic production [5][6][7][8], and bioremediation as well [9][10][11][12]. The first examination of lipids in R.…”

Section: Introductionmentioning

confidence: 99%

Occurrence of oleic and 18:1 methyl-branched acyl chains in lipids of Rhodobacter sphaeroides 2.4.1

Granafei

Losito

Salivo

et al. 2015

Analytica Chimica Acta

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“…As a safe and non-toxic photosynthetic bacteria, R. sphaeroides has been widely studied in its unique biological transformation functions [23,24,25]. Besides, R. sphaeroides serves as a new platform for producing bioactive substance including coenzyme Q10, carotenoids, sesquiterpene, fatty acids, and 5-aminolevulinic acid [26,27,28,29,30]. Owing to its excellent adaptability to the aerobic or anaerobic environment and fermentation, or photosynthesis conditions, R. sphaeroides has attracted considerable attention in food, breeding, environmental, and pharmaceutical industries [22,24,31,32].…”

Section: Introductionmentioning

confidence: 99%

The Effects of <i>Rhodobacter sphaeroides</i> on the Composition of Gut Microbiota<i> </i>and Short-chain Fatty Acids in Mice

Yang¹,

Luan²,

An³

et al. 2020

JFNR

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This study aims to determine the effects of Rhodobacter sphaeroides 8513 on the physiological and biochemical indicators, short-chain fatty acids, and gut microbiota of healthy BALB/c mice. Mice were divided into the control group and R. sphaeroides group (5×10 8 CFU/mL). After 28 days of continuous gavage, fecal samples were collected for high-throughput sequencing, then mice were sacrificed and the serum was taken for biochemical analysis. Liver, kidney, and spleen were obtained for organ coefficient calculation, and cecum contents were collected for short-chain fatty acid analysis by gas chromatography. The results showed that there was no significant difference in body weight gain, alanine aminotransferase (ALT) and urea nitrogen (BUN) levels between the control group and R. sphaeroides group, while R. sphaeroides significantly decreased the aspartate aminotransferase (AST) and creatinine (CRE) level. No side effect of R. sphaeroides treatment on the basic physiological health of mice was observed. R. sphaeroides significantly increased the content of acetic acids in the gut of mice, while there were no significant changes in the concentration of butyric and propionic acid. High-throughput sequencing analysis indicated that there was a significant difference in α-diversity between these 2 groups, while there was no significant difference in β-diversity between them. R. sphaeroides not only increased the abundance of anaerobic bacteria of Rhodospirillaceae, Desulfovibrionaceae, and Helicobacter in the gut of mice, but also increased the abundance of the predominant microflora in the gut such as Bacteroidaceae (Bacteroides), Prevotellaceae, Clostridiales_vadinBB60_group (Closporaceae). These results suggested that R. sphaeroides 8513 could modulate the microbial ecology in the gut of mice.

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Continuous cultivation of photosynthetic bacteria for fatty acids production

Cited by 25 publications

References 35 publications

Photo-hydrogen and lipid production from lactate, acetate, butyrate, and sugar manufacturing wastewater with an alternative nitrogen source byRhodobactersp.KKU-PS1

Photo-hydrogen and lipid production from lactate, acetate, butyrate, and sugar manufacturing wastewater with an alternative nitrogen source byRhodobactersp.KKU-PS1

Occurrence of oleic and 18:1 methyl-branched acyl chains in lipids of Rhodobacter sphaeroides 2.4.1

The Effects of <i>Rhodobacter sphaeroides</i> on the Composition of Gut Microbiota<i> </i>and Short-chain Fatty Acids in Mice

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