A novel nanoemulsion-based microalgal growth medium for enhanced biomass production

Abstract Background Microalgae are well-established feedstocks for applications ranging from biofuels to valuable pigments and therapeutic proteins. However, the low biomass productivity using commercially available growth mediums is a roadblock its mass production. This work describes strategy boost algal by an effective CO 2 supplement. Results In present study, novel nanoemulsion-based media has been tested of freshwater microalgae strain Chlorella pyrenoidosa . Two different were developed 1% silicone oil nanoemulsion (1% SE) paraffin PE) supplemented in Blue-green 11 (BG11). After 12 days cultivation, yield was found highest PE followed SE control, i.e., 3.20, 2.75, 1.03 g L ?1 , respectively. The chlorophyll-a synthesis improved 76% 53% compared with control. respective microalgal cell numbers PE, control measured counter 3.00 × 10 6 2.40 1.34 cells mL absorption tendency emulsion highlighted as key mechanism enhanced On biochemical characterization produced biomass, it that nanoemulsion-cultivated C. had increased lipid = 26.80%, 23.60%) carbohydrates 17.20%, 18.90%) content (lipid 18.05%, 13.60%). Conclusions study which potentially acts supplement thereby increasing cells. Further, depicts increase carbohydrate content. approach provides high without altering morphological characteristics like shape size revealed field emission scanning electron microscope (FESEM) images. Graphical abstract