Autofermentation of alkaline cyanobacterial biomass to enable biorefinery approach

Table 3 Organic acid yield and final product concentration obtained via autofermentation of microalgal and cyanobacterial biomass

Microorganism	Organic acid yield (g/g DM)	Organic acid concentration (g/L)	Fermentation Conditions			Harvesting	Initial biomass concentration (g DM/L)	Incubation time (days)	Reference
Microorganism	Organic acid yield (g/g DM)	Organic acid concentration (g/L)	Temperature	pH	Added Chemicals	Harvesting	Initial biomass concentration (g DM/L)	Incubation time (days)	Reference
Arthrospira maxima	0.55	0.825	30 °C	9.80	210 mM Na⁺	Filtration	1.5	2	[43]
Arthrospira platensis	0.011	0.22	35 °C	–	NaH₂PO₄/Na₂HPO₄ buffer solution	Filtration	50	5	[44]
Chlorella sorokiniana	0.30	7.5	29–31 °C	10.40	Carbonate/bicarbonate buffer	Centrifugation	25	2	[45]
Nannochloropsis sp.	0.061	–	38 °C	–	–	Centrifugation	11–29 wt%	1	[46]
Candidatus “P. alkaliphilum”^a	0.619	2.16	21 °C	10.48	–	Natural settling	3.04	8	This study
Candidatus “P. alkaliphilum”^b	0.064	15.37	21 °C	10.48	–	Centrifugation	219.36	8	This study

^a Autofermentation at the lowest initial biomass concentration (3.04 g AFDM/L)
^b Autofermentation at the highest initial biomass concentration (219.36 g AFDM/L)

ISSN: 2731-3654