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Potentials and Challenges in the Production of Microalgal Pigments with Reference to Carotenoids, Chlorophylls, and Phycobiliproteins
Published in Gokare A. Ravishankar, Ranga Rao Ambati, Handbook of Algal Technologies and Phytochemicals, 2019
Delia B. Rodriguez-Amaya, Iriani R. Maldonade
Industrial production of D. salina β-carotene is a well-established technology. It is in operation in Australia, China, India, Israel, Japan, and the United States (Borowitzka, 2013; Ambati et al., 2018a). D. salina has the advantage of not having a cell wall and producing high levels of β-carotene (up to 14%). Its halotolerant nature allows it to be cultivated in open saline mass culture (e.g., coastal sea water), relatively free of competing microorganisms.
Bacillus
Published in Dongyou Liu, Handbook of Foodborne Diseases, 2018
Bacillus spp. can be thermophilic, psychrophilic, acidophilic, alkaliphilic, halotolerant, or halophilic, with the ability to colonize a diversity of habitats, including desert sands, hot springs, Arctic soils, insects, animals, and humans, and to withstand high pH values (B. alcalophilus), temperatures (B. thermophilus), and salt concentrations (B. halodurans) [11,12].
Mechanism of biofilm formation on a hydrophobic polytetrafluoroethylene membrane during the purification of surface water using direct contact membrane distillation (DCMD), with especial interest in the feed properties
Published in Biofouling, 2020
Chang Liu, Liang Zhu, Lin Chen
The existing literature on fouling of MD is largely concerned with the study of scaling (Yan et al. 2017; Gryta 2019; Kim et al. 2019) and organic fouling (Boo et al. 2018; Castillo et al. 2019; Kong et al. 2019); thus, there is limited knowledge on the succession and development mechanisms of biofouling in the MD system (Krivorot et al. 2011; Zodrow et al. 2014; Bogler et al. 2017). The formation of biofilm has indeed been shown in the MD system (Gryta 2002; Krivorot et al. 2011; Zodrow et al. 2014) although in several scenarios, it was eased by the high feed temperature (>40 °C) (Alklaibi and Lior 2005; Alkhudhiri et al. 2012) or high salinity (>100 g/L) (Camacho et al. 2013; Cho et al. 2016). Some specialized thermophilic microbes and halotolerant bacteria could well exist in the MD system as they still grew well in the extreme circumstances through their own characteristic metabolic methods (Krivorot et al. 2011; Frock and Kelly 2012; Lin et al. 2014). Moreover, the biofilm formed on the membrane surface of MD can conform to some particular surface conditions through the different compositions of the extracellular polymeric substances (EPS) thus facilitating attachment (Phattaranawik et al. 2009). Therefore, the biofouling phenomenon is still an urgent obstacle for the application of MD technology in water treatment, and the enhancement of the feed temperature might not be sufficient for biofouling control of MD (Zodrow et al. 2014; Tijing et al. 2015).
Isolation and characterization of a novel thermophile; Bacillus haynesii, applied for the green synthesis of ZnO nanoparticles
Published in Artificial Cells, Nanomedicine, and Biotechnology, 2019
Suriya Rehman, B. Rabindran Jermy, Sultan Akhtar, J. Francis Borgio, Sayed Abdul Azeez, Vijaya Ravinayagam, Reem Al Jindan, Zainab Hassan Alsalem, Abdullah Buhameid, Adil Gani
We also demonstrated that CDL3 is an extremophile for its ability to grow in the presence of 0–12% NaCl, making it halotolerant and up to the temperature of 55 °C, making it thermotolerant. Extremophiles are known to survive in the extreme environments to which they had adapted to grow; indeed it goes in favor of CDL3, which is isolated from a desert plant, an inhabitant of extreme hot climate and water scarcity condition [43]. During the study of cultural characteristic, it is assumed that CDL3 has the ability of retaining water, when grown at 50 to 55 °C, which is evident from the moist colonies on agar plate (Figure 1(A)), hence, making it thrive in extreme conditions. The structural analysis of B. haynesii by electron microscopy is previously unknown. Analysis by TEM shows, the features of structural organization of the spore, which may correlate with its physical and biological characteristics including the ability to survive at extreme conditions [44].
Conditioning of metal surfaces enhances Shewanella chilikensis adhesion
Published in Biofouling, 2022
Benjamin Tuck, Elizabeth Watkin, Anthony Somers, Maria Forsyth, Laura L. Machuca
To evaluate the attachment of bacteria to CS surfaces, 50 mL reactors containing ASW were inoculated with S. chilikensis DC 57. The isolate was previously implicated in MIC (Salgar-Chaparro, Castillo-Villamizar et al. 2020), is a facultative anaerobic and halotolerant, therefore providing an ideal model for bacterial attachment studies. S. chilikensis DC57 was previously shown to attach to pre-oxidised surface within 24 h (Tuck et al. 2021), with 24 h attachment to wet-ground surfaces observed here (Supplementary Figure 3).