Abstract
This study aims to characterize the potential of three strains of microalgal species (Chlorella sorokiniana KNUA114 and KNUA122; C. vulgaris KNUA104) for use as feedstock, based on their fatty acid compositions. Each strain was molecularly identified using four marker genes (ITS, SSU, rbcL, and tufA) and phylogenetically characterized. C. sorokiniana and C. vulgaris collected from Ulleung Island, South Korea, were homologous with other known species groups. Samples' fatty acid components were measured using GC/MS analysis in growth temperatures of 10 °C, 25 °C, and 35 °C. The growth rate of C. sorokiniana strains was higher than that of C. vulgaris under high-temperature conditions, confirming the potential industrial applicability of the former as feedstock material. Additionally, saturated fatty acid contents and productivities increased as biological resources of the C. sorokiniana strains were higher than those of C. vulgaris under high light intensity and temperature conditions. These results suggest that the fatty acid components of C. sorokiniana strains may potentially be used as biological resources (e.g., feedstock).
Highlights
Microalgae are important primary producers in the process of photosynthesis
Our PhotoBiobox analysis revealed that C. sorokiniana KNUA114 and KNUA122 strains were red-colored under high light intensity, unlike C. vulgaris KNUA104
Our results revealed that the C. sorokiniana KNUA114 and KNUA122 strains had higher photosynthetic efficiencies and growth rates than C. vulgaris KNUA104 strain under high light intensity and high-temperature conditions
Summary
Microalgae are important primary producers in the process of photosynthesis. Microalgal species have distinct characteristics and are adapted to a wide range of environments (Andersen and Hessen, 1991; Dufosse et al, 2005; Rasal et al, 2019). Previous research confirmed that microalgae could be used as biological resources (Dufosse et al, 2005; Becker, 2007; Vanthoor-Koopmans et al, 2013). Microalgal nutritional compounds, such as vitamins, minerals, fibers, fatty acids, and amino acids, have been investigated to determine the appropriate use for different species (Caporgno and Mathys, 2018). Microalgae do not require supplementation with organic carbon sources during cultivation as they carry out photosynthesis. Microalgal biomass contains large amounts of unsaturated fatty acids, lutein, food particles, and other useful materials
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
