Methods to Increase Microalgae Carbohydrates for Bioethanol Production

Compared to traditional lignocellulose biomass, microalgae contain little or no lignin. Traditionally, bioethanol production from undergoes three major steps: (i) pretreatment; (ii) polysaccharides hydrolysis into simple sugars; and (iii) sugar conversion by fermentation. Microalgae convert sunlight, water, CO2 algal biomass. Diatoms, green algae, bluegreen golden algae are four main classes of microalgae, whereas the two species filamentous phytoplankton algae. solar energy efficiently, producing an enormous number various metabolites. Many studies have been conducted biofuels, such as biodiesel, bioethanol, biohydrogen, biogas. However, compared throughfermentation consumes less with its simplified process. Considering these advantages, a potential applications for proposed developed. Despite promising it still has obstacles, low fermentable carbohydrate content microalgae. This article intends discuss methods increase carbohydrates thoroughly. To solve this problem, several nutritional starvations/limitations, like nitrogen phosphorous starvation, currently being considered in paper.