Pyroligneous acid as a multifunctional biostimulant enhances microalgal growth and soil beneficial metabolites for sustainable agriculture.

ABSTRACT: Microalgae are recognized as eco-functional inoculants that improve soil quality and stimulate plant productivity. This study explored the potential of pyroligneous acid (PA), a low-cost byproduct of biomass pyrolysis, as a biostimulant enhancing microalgal growth and metabolite production. We investigated the effects of PA on growth, and synthesis of indole-3-acetic acid (IAA) and extracellular polymeric substances (EPS) in two microalgal strains, Desmodesmus sp. MAS1 and Chlorella sp., when cultivated with PA in presence or absence of light. Preliminary studies showed that 0.01% (v/v) of PA enhanced growth of the microalgae, and its increased concentrations were inhibitory. Growth rate of Chlorella sp. with PA was 0.444 d^‒1 in a photobioreactor compared to 0.465 d^‒1

SUBMITTER: Abinandan S 

PROVIDER: S-EPMC12334522 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature