Unveiling the induced lipid production in Chlorella vulgaris under pulsed magnetic field treatment

The pulsed magnetic field (PMF) was adopted for the enhancement of lipid in Chlorella vulgaris. The average biomass and lipid content in outdoor conditions were found to be 0.315 g.L-1 and 20-25% respectively. The effect of magnetic flux density in the range of 600-900 mG on biomass production and lipid content was studied. A magnetic flux density of 700 mG at 1Hz for 4 h per day was found to be optimum, which yielded a maximum dry cell weight of 0.61 g.L-1, two-fold than the normal condition, with a lipid content of 55.2%. FTIR analysis evidenced that the PMF treatment increased the active oxygen, which could be attributed to the enhancement of growth and lipid of C. vulgaris.

Automated summary

Utilizing a 700 mG pulsed magnetic field for 4 hours per day at 1Hz was found to be the optimum condition for enhancing biomass and lipid content in Chlorella vulgaris, resulting in a doubling of dry cell weight and a lipid content of 55.2%. FTIR analysis indicated that the pulsed magnetic field treatment increased active oxygen, leading to enhanced growth and lipid production in C. vulgaris.