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Effects of carbon, nitrogen, and phosphorus supplements on growth and biochemical composition of Podohedriella sp. (MCC44) isolated from northeast India
Author(s) -
Ghosh Ashmita,
Sarkar Sambit,
Gayen Kalyan,
Bhowmick Tridib K.
Publication year - 2019
Publication title -
environmental progress and sustainable energy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.495
H-Index - 66
eISSN - 1944-7450
pISSN - 1944-7442
DOI - 10.1002/ep.13378
Subject(s) - phosphorus , biomass (ecology) , nitrogen , photosynthesis , carbon fibers , nutrient , food science , starch , carbohydrate , composition (language) , biology , botany , chemistry , environmental chemistry , biochemistry , agronomy , ecology , materials science , linguistics , organic chemistry , philosophy , composite number , composite material
Microalgae are photosynthetic microscopic organisms, which became popular worldwide due to the promising resource of sustainable and clean energy production with economic and environmental benefits. In this study, one microalgae strain, Podohedriella sp . (MCC44), was isolated from the paddy field, located in Gomati district of Tripura state (northeast part of India). Identification of isolated strain was confirmed by 18S rRNA (ribosomal ribonucleic acid) sequencing analysis. Ultrastructure morphology and surface elemental composition of the strain were revealed for the isolated Podohedriella sp . (MCC44) . Results of this study have shown isolated Podohedriella sp. is efficiently able to trap carbon from the atmosphere and can be considered as a way to mitigate CO 2 gas emissions from the flue gases generated from the industries. Effects of macronutrients (carbon, nitrogen, phosphorus) at different concentrations in the BG‐11 media on growth rate and biomolecular compositions such as chlorophyll, protein, carbohydrate, and lipid content were investigated. Maximum biomass (0.4 g/L) of isolated Podohedriella sp . (MCC44) was obtained when the initial nitrogen‐to‐phosphorus ratio was maintained at 8.7 in the BG‐11 media. Variation in the concentrations of macronutrients (carbon, nitrogen, phosphorus) shows that isolated Podohedriella sp. (MCC44) is enriched with (~30–40%) carbohydrate, (30–45%) protein, and (15–24%) lipid. Therefore, freshwater microalgae strain with elevated growth rate and maximum protein, carbohydrate, and lipid content would grow the interest in microalgae globally for high biomass production and other multiple applications.