Biomass and lipid production potential of cyanobacteria and microalgae isolated from the diverse habitats of Garhwal Himalaya, Uttarakhand, India. (July 2022)

• Record Type: Journal Article
• Authors: Singh, Preeti; Kumar, Dhananjay
• Is Part Of: Biomass and bioenergy. Volume 162(2022)
• Publication Date: 2022-07
• Subjects: Biodiesel -- Biomass -- Lipid -- PROMETHEE -- Thermal spring; Biomass energy -- Periodicals; Biomass -- Periodicals; Energy-Generating Resources -- Periodicals; Bioénergie -- Périodiques; 333.9539
• DOI: 10.1016/j.biombioe.2022.106469
• Languages: English
• ISSNs: 0961-9534

Abstract

Abstract: In the present study, a total of 52 cyanobacterial and 57 microalgal strains belonging to different genera were investigated for their potential to produce biodiesel feedstock. Ranking of different isolates was performed employing a multicriteria decision analysis (MCDA) software, PROMETHEE, considering three important parameters, the specific growth rate, biomass productivity and lipid content. PROMETHEE offers a straightforward selection of potential isolates enumerating Phi scores. Among all the studied strains, Pseudobohlinia sp. (PbS–BHS), a unicellular green alga and a new record from Badrinath hot spring and Uttarakhand (India), was identified as the most potent candidate ( Phi = 0, 6053; specific growth rate = 0.7 per day; biomass productivity = 203.5 mg/L/d; lipid content = 33%). Of filamentous forms, Leptolyngbya foveolarum (LlF-RHS), isolated from Ringigad hot spring, secured the top position ( Phi = 0, 5017; specific growth rate = 0.38 per day; biomass productivity = 25 mg/L/d; lipid content = 13%). Nevertheless, several other microalgal [e.g., Oocystis quadricauda (OQ-SHS), Chlorella sorokiniana (CS–CHS), Coelastrum sphericum (CeS-KFS) and Scenedesmus dimorphus (SD-ADW)] and cyanobacterial [e.g., Leptolyngbya sp. (LlS-SHS), Lyngbya langerhemii (LL-RHS), Lyngbya aesturii (LA-RHS), Leptolyngbya laminosa (LlL-SHS) and Phormidium sp. (PS-DWS)] strains also depicted substantially high Phi scores. Hence, they also appear to be promising for algal biodiesel feedstock production. Highlights: Microalgal forms were examined for their potential to produce biodiesel feedstock. The study employed PROMETHEE software for screening the promising algal forms. Pseudobohlinia sp. was identified as the most potent candidate. Leptolyngbya foveolarum secured the first rank among the filamentous isolates. Unicellular algal forms generally showed superiority over filamentous ones.