Photo fermentative hydrogen production by a new strain; Rhodobacter sphaeroides CNT 2A, isolated from pond sediment

Subudhi, Sanjukta; Mogal, Sachin K.; Kumar, Navneet; Nayak, Tanmaya; Lal, Banwari; Velankar, Harshad Ravindra; Kumar, T. Ashok; Rao, Peddy V.C.; Choudary, Nettem V.; Shah, Gitesh; Gandham, Sriganesh

doi:10.1016/j.ijhydene.2016.06.255

Cited by 16 publications

(4 citation statements)

References 22 publications

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“…Purple non-sulfur photosynthetic bacteria (PNSB) Rhodobacter sphaeroides was isolated from St. Y of Yamagawa bay, Kagoshima, Japan. Previous studies indicated that PNSB widely live in diverse environments (Merugu et al 2014;Okubo et al 2006;Subudhi et al 2016) . The growth of PNSB in various environments can be attributed to their high ability to utilize a wide range of nutrients (Alloul et al 2019;Wei et al 2016) and its ability to survive in difficult environmental conditions (Kosamu and Obst 2009;Yegani et al 2005) .…”

Section: Discussionmentioning

confidence: 99%

Use of Purple Non-Sulfur Photosynthetic Bacteria (<i>Rhodobacter sphaeroides</i>) in Promoting Ciliated Protozoa Growth

et al. 2020

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Photosynthetic bacterium (PSB) was isolated from sediment samples of Yamagawa Bay, Kagoshima, Japan. Phylogenetic analysis results of PSB isolate were closely related to Rhodobacter sphaeroides, purple non-sulfur photosynthetic bacteria (PNSB) . Pink-colored smooth edges of single bacterial colonies were observed after 3-5 days of incubation period on Basic I medium agar plates. Rhodobacter sphaeroides microscopic examination showed a short rod cell (1-2 µm length) with round ends. Sediment and water samples used for ciliates cultivation were collected from Kuwano-ura Bay, Koshiki Island, Japan. Ciliates were cultivated using fish meal with radish leaves medium (MI) , with sediment into MI (MII) and algae media (MIII) . The use of the algae media (MIII) in cultivation mixture produced the highest total number of ciliates. Big size ciliates were identified as Euplotes minuta and Cyclidium varibonneti, while small size was identified as Micrometopion nutans, based on PCR-DGGE. When ciliates were cultured with the PSB isolate, Rhodobacter sphaeroides as a feed, ciliates grow to 2,081 individual ml -1 72 hrs later. These findings indicate that PNSB can be used to promote ciliates growth.

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Section: Discussionmentioning

confidence: 99%

Use of Purple Non-Sulfur Photosynthetic Bacteria (<i>Rhodobacter sphaeroides</i>) in Promoting Ciliated Protozoa Growth

et al. 2020

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“…This species is known as an anoxygenic purple non-sulfur bacterium (Pfennig and Trüper, 1971) with a freshwater origin. In view of their diverse metabolic systems and multiple uses (e.g., Lu et al, 2011;Subudhi et al, 2016) , the Rhodob. sphaeroides isolates may be associated with its rapid growth and the possibility of using a variety of organic pollutant substances as their nutrients.…”

Section: Discussionmentioning

confidence: 99%

“…Aerobic anoxygenic phototrophic bacteria, accounting for up to 10% of bacterial communities in the marine euphotic zones (Yutin et al, 2007) , also produce Bchl a and complement their energy requirements by harvesting light under an aerobic condition. Habitats of AnPBs are restricted by availability of light and electron donors including reduced sulfur or organic compounds for their phototrophic growth as well as redox potential (van Gemerden and Mas, 1995;Guyoneaud et al, 1996) . Therefore, community structure of the phototrophs will be a good bioindicator reflecting their ambient pollution levels, especially in the organically polluted marine sediments, resulting in eutrophication, oxygen depletion and high sulfide concentration.…”

Section: Introductionmentioning

confidence: 99%

Diversity of the Photosynthetic Bacterial Communities in Highly Eutrophicated Yamagawa Bay Sediments

et al. 2020

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Yamagawa Bay, located in Ibusuki, Kagoshima Prefecture, Japan, is a geographically enclosed coastal marine inlet, and its deteriorating seabed sediments are under an anoxic, reductive, sulfide-rich condition. In order to gain insight into diversity of anoxygenic photosynthetic bacteria (AnPBs) and their ecophysiological roles in the sediments, three approaches were adopted: isolation of AnPBs, PCR-DGGE of 16S rDNA, and PCR-DGGE of pufM. Among the bacterial isolates, relatives of Rhodobacter sphaeroides were most dominant, possibly contributing to transforming organic pollutants in the sediments. Abundance of Chlorobium phaeobacteroides BS1 was suggested by 16S rDNA PCR-DGGE. It could reflect intensive stratification and resultant formation of the anoxic, sulfide-rich layer in addition to extreme low-light adaptation of this strain. Diverse purple non-sulfur or sulfur bacteria as well as aerobic anoxygenic photoheterotrophs were also detected by pufM PCR-DGGE, which could be associated with organic or inorganic sulfur cycling. The outcome of the present study highlights ecophysiologically important roles of AnPBs in the organically polluted marine sediments.

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“…Rhodopseudomonas sp. nov. strain A7 and Rhodobacter sphaeroides CNT 2A, which was isolated from sludge and pond sediment, respectively, can directly utilize simple sugar, such as glucose and sucrose [104,105]. It must be mentioned that different pure strains perform differently with respect to hydrogen yield from the same substrate.…”

Section: Microorganisms In Photo Fermentationmentioning

confidence: 99%

Organic waste to biohydrogen: A critical review from technological development and environmental impact analysis perspective

et al. 2019

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The increasing worldwide population and rapid urbanization have led to huge amount of fossil fuels consumption and waste generation. The awareness of living in a sustainable society is pushing people to target a low-carbon energy structure. Hydrogen, a carbonfree energy source, draws more and more attention. Particularly, biohydrogen from organic waste calls great interest by generating hydrogen and disposing waste simultaneously. Therefore, the three main technologies converting waste to biohydrogen: biological fermentation, thermochemical gasification and microbial electrolysis cell, were reviewed in this study from both technological and environmental perspective. The results showed that a variety of waste streams have been tested to produce hydrogen and different production efficiency were reported. The most favourable waste material for fermentation and microbial electrolysis cell were different types of wastewater, and agricultural lignocellulosic waste was also intensively studied in fermentation. Whereas wooden waste and municipal solid waste were the two wastes investigated the most in gasification.Optimization of the operational parameters was proved to improve the hydrogen production. However, researches focusing on scale-up of these technologies are still needed. On the other hand, life cycle assessment demonstrated that waste gasification had a better environmental profile compared to other technologies. However, the majority of the reviewed life cycle assessment studies failed to further explain the robustness due to the lack of sensitivity and uncertainty analysis, indicating high quality life cycle assessment studies are needed in the future.

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Photo fermentative hydrogen production by a new strain; Rhodobacter sphaeroides CNT 2A, isolated from pond sediment

Cited by 16 publications

References 22 publications

Use of Purple Non-Sulfur Photosynthetic Bacteria (<i>Rhodobacter sphaeroides</i>) in Promoting Ciliated Protozoa Growth

Use of Purple Non-Sulfur Photosynthetic Bacteria (<i>Rhodobacter sphaeroides</i>) in Promoting Ciliated Protozoa Growth

Diversity of the Photosynthetic Bacterial Communities in Highly Eutrophicated Yamagawa Bay Sediments

Organic waste to biohydrogen: A critical review from technological development and environmental impact analysis perspective

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