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Table 4 A summary of bioactive compounds identified by FTIR and Py-GC/MS to show known biological activities of the formulations

From: Physicochemical analyses of plant biostimulant formulations and characterisation of commercial products by instrumental techniques

Formulation
name
FTIR functional group/compound Py-GC/MS–pyrolysis products Biological activities of the compounds Biological activities
of the compounds
Rygex Humic acids, polysaccharides, amino groups, peptides Polysaccharides, amino acids, peptides Stimulate antioxidant response; act as chelating agent for boosting resistance to stress in crop plants; improved nitrogen metabolism [6, 15, 58]
Algavyt Nitriles, amino groups, polysaccharides Mannitol, amino acids, polysaccharides, Nitrile-precursor for indole-3- acetic acid); mannitol stimulates polyamide synthesis and enhanced nutrient transport; alleviate abiotic stress [59, 60]
Ryzoset Amino acids, saponins, polysaccharides Amino acids, methyl furan and furfural derivatives Enhanced root growth to reduce abiotic and biotic stresses; antimicrobial activity [50, 61, 62]
Manek Fatty acid, long chain hydrocarbons Compounds containing long chain hydrocarbons Enhanced resistance to biotic stress; growth hormone-like stimulation [3]
Ecoryg Peptides Tri-methylamines, N,N-dimethylglycine methyl ester Growth hormone-like stimulation; as chelating agent for boosting resistance to stress in crop plants [6, 15, 58]
Algavyt Zn/Mn Amino acids, Polysaccharides Pyrroles, N heterocyclic compounds Induce plant defence responses and increase plant tolerance to abiotic stress; signalling role in regulating nitrogen acquisition by roots [3, 51, 52, 63, 64]