Conclusions: This study showed that algae extract derived from C. reinhardtii is similar, if not superior, to
commercially available yeast extract in nutrient content and effects on the growth and metabolism of E. coli and
S. cerevisiae. Bacto™ yeast extract is valued at USD $0.15–0.35 per gram, if algae extract was sold at similar prices,
it would serve as a high-value co-product in algae-based fuel processes.