Characterization of different microalgae cultivated in open ponds

Microalga is one of the main sources of biomasses for the production of biofuels in the 21st century. Many labs and industries around the world are seeking for more productive strains and better cultivation models. The aim of this work was to evaluate the growth and kinetic parameters of six microalgae, and the moisture and lipid contents and fatty acids profiles of the biomasses harvested at the end of each cultivation. The microalgae were isolated in the Mid-Western Region of Brazil cultivated in open pond systems. It was observed that among the six microalgae used in this work, Pseudokirchneriella subcapitata presented the higher maximum specific growth rate (μmax) (0.12 day-1). The microalgae Coelastrum sp. and P. subcapitata were the ones with the highest lipid contents, with approximately 20% of dry mass. The main fatty acid accumulated in these conditions was palmitic acid, with percentages of 59 to 69% for all microalgae evaluated. Other factors that had influenced results from cultivations in open ponds were discussed here.

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Physiological Characterization of an Anaerobic Ammonium-Oxidizing Bacterium Belonging to the “Candidatus Scalindua” Group

Applied and Environmental Microbiology ◽

10.1128/aem.00056-13 ◽

2013 ◽

Vol 79 (13) ◽

pp. 4145-4148 ◽

Cited By ~ 66

Author(s):

Takanori Awata ◽

Mamoru Oshiki ◽

Tomonori Kindaichi ◽

Noriatsu Ozaki ◽

Akiyoshi Ohashi ◽

...

Keyword(s):

Growth Rate ◽

Specific Growth ◽

Maximum Specific Growth Rate ◽

Ammonium Oxidation ◽

Lower Growth ◽

Content Type ◽

Physiological Characterization ◽

Phylogenetic Affiliation ◽

Lower Growth Rate

ABSTRACTThe phylogenetic affiliation and physiological characteristics (e.g.,Ksand maximum specific growth rate [μmax]) of an anaerobic ammonium oxidation (anammox) bacterium, “CandidatusScalindua sp.,” enriched from the marine sediment of Hiroshima Bay, Japan, were investigated. “CandidatusScalindua sp.” exhibits higher affinity for nitrite and a lower growth rate and yield than the known anammox species.

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Effects of Mucin, Haemoglobin and Collagen on the Maximum Specific Growth Rate, Biomass and Hydrolytic Enzyme Production ofPorphyromonas gingivalisin Continuous Culture

Microbial Ecology in Health and Disease ◽

10.3402/mehd.v4i5.7714 ◽

1991 ◽

Vol 4 (5) ◽

Author(s):

T. Minhas ◽

J. Greenman ◽

A. G. Schaffer

Keyword(s):

Growth Rate ◽

Specific Growth Rate ◽

Continuous Culture ◽

Enzyme Production ◽

Specific Growth ◽

Hydrolytic Enzyme ◽

Maximum Specific Growth Rate

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E-beam irradiation affects the maximum specific growth rate ofBacillus cereus

International Journal of Food Science & Technology ◽

10.1111/j.1365-2621.2012.03199.x ◽

2012 ◽

Vol 48 (2) ◽

pp. 382-386 ◽

Cited By ~ 3

Author(s):

Juan Aguirre ◽

Mª Rosa Rodríguez ◽

Rodrigo González ◽

Gonzalo García de Fernando

Keyword(s):

Growth Rate ◽

Specific Growth Rate ◽

Specific Growth ◽

Maximum Specific Growth Rate ◽

Beam Irradiation ◽

Ofbacillus Cereus

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Clonal variation in maximum specific growth rate and susceptibility towards antimicrobials

Journal of Applied Microbiology ◽

10.1046/j.1365-2672.2003.02079.x ◽

2003 ◽

Vol 95 (6) ◽

pp. 1261-1267 ◽

Cited By ~ 48

Author(s):

N. Sufya ◽

D.G. Allison ◽

P. Gilbert

Keyword(s):

Growth Rate ◽

Specific Growth Rate ◽

Specific Growth ◽

Maximum Specific Growth Rate ◽

Clonal Variation

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Maximum specific growth rate of anammox bacteria revisited

Water Research ◽

10.1016/j.watres.2017.03.027 ◽

2017 ◽

Vol 116 ◽

pp. 296-303 ◽

Cited By ~ 88

Author(s):

Lei Zhang ◽

Yuko Narita ◽

Lin Gao ◽

Muhammad Ali ◽

Mamoru Oshiki ◽

...

Keyword(s):

Growth Rate ◽

Specific Growth Rate ◽

Specific Growth ◽

Maximum Specific Growth Rate ◽

Anammox Bacteria

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Measurement of the maximum specific growth rate in chemostat of Pseudomonas spp. with different abilities for biofilm formation

European Journal of Applied Microbiology and Biotechnology ◽

10.1007/bf00500496 ◽

1983 ◽

Vol 18 (5) ◽

pp. 303-307 ◽

Cited By ~ 11

Author(s):

G�ran Molin

Keyword(s):

Growth Rate ◽

Specific Growth Rate ◽

Biofilm Formation ◽

Specific Growth ◽

Maximum Specific Growth Rate ◽

Pseudomonas Spp

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Measuring maximum specific growth rate and half saturation coefficient for activated sludge systems using a freeze concentration technique

Water Research ◽

10.1016/0043-1354(93)90119-3 ◽

1993 ◽

Vol 27 (12) ◽

pp. 1793-1795 ◽

Cited By ~ 7

Author(s):

Alison H. Slade ◽

Peter H. Dare

Keyword(s):

Growth Rate ◽

Activated Sludge ◽

Specific Growth Rate ◽

Specific Growth ◽

Maximum Specific Growth Rate ◽

Freeze Concentration ◽

Concentration Technique ◽

Saturation Coefficient ◽

Activated Sludge Systems ◽

Half Saturation Coefficient

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Evolution of Escherichia coli During Growth in a Constant Environment

Genetics ◽

10.1093/genetics/116.3.349 ◽

1987 ◽

Vol 116 (3) ◽

pp. 349-358

Author(s):

Robert B Helling ◽

Christopher N Vargas ◽

Julian Adams

Keyword(s):

Escherichia Coli ◽

Growth Rate ◽

Specific Growth Rate ◽

Continuous Culture ◽

Specific Growth ◽

Maximum Specific Growth Rate ◽

Constant Environment ◽

Single Clone ◽

Mixed Populations

ABSTRACT Populations of Escherichia coli, initiated with a single clone and maintained for long periods in glucose-limited continuous culture, developed extensive polymorphisms. In one population, examined after 765 generations, two majority and two minority types were identified. Stable mixed populations were reestablished from the isolated strains. Factors involved in the development of this polymorphism included differences in the maximum specific growth rate and in the transport of glucose, and excretion of metabolites by some clones which were utilized by minority clones.

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Anaplerotic reactions active during growth of Saccharomyces cerevisiae on glycerol

FEMS Yeast Research ◽

10.1093/femsyr/foz086 ◽

2019 ◽

Vol 20 (1) ◽

Cited By ~ 1

Author(s):

Joeline Xiberras ◽

Mathias Klein ◽

Celina Prosch ◽

Zahabiya Malubhoy ◽

Elke Nevoigt

Keyword(s):

Saccharomyces Cerevisiae ◽

Growth Rate ◽

Specific Growth Rate ◽

Pyruvate Carboxylase ◽

Reference Strain ◽

Specific Growth ◽

Glyoxylate Cycle ◽

Maximum Specific Growth Rate ◽

The Glyoxylate Cycle ◽

Anaplerotic Reactions

ABSTRACT Anaplerotic reactions replenish TCA cycle intermediates during growth. In Saccharomyces cerevisiae, pyruvate carboxylase and the glyoxylate cycle have been experimentally identified to be the main anaplerotic routes during growth on glucose (C6) and ethanol (C2), respectively. The current study investigates the importance of the two isoenzymes of pyruvate carboxylase (PYC1 and PYC2) and one of the key enzymes of the glyoxylate cycle (ICL1) for growth on glycerol (C3) as a sole carbon source. As the wild-type strains of the CEN.PK family are unable to grow in pure synthetic glycerol medium, a reverse engineered derivative showing a maximum specific growth rate of 0.14 h−1 was used as the reference strain. While the deletion of PYC1 reduced the maximum specific growth rate by about 38%, the deletion of PYC2 had no significant impact, neither in the reference strain nor in the pyc1Δ mutant. The deletion of ICL1 only marginally reduced growth of the reference strain but further decreased the growth rate of the pyc1 deletion strain by 20%. Interestingly, the triple deletion (pyc1Δ pyc2Δ icl1Δ) did not show any growth. Therefore, both the pyruvate carboxylase and the glyoxylate cycle are involved in anaplerosis during growth on glycerol.

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