You can use the method that measure quantities of starch and lipids were using a microplate-based method, which indicated linear production of starch and lipids within limited ranges (lipids, 0.071–0.380 g mL1; starch, 155– 404 mg mL1) when standard curves were prepared for lipids extracted with methyl tertiary-butyl ether.
Attenuated total reflection–Fourier transform infrared (ATR–FTIR) spectroscopy
This method is a quick, cheap, and simple way to collect chemical compositional information from microalgae. However, extracting lipids and carbohydrates can be error-prone and laborious.