Table 3 Concentration of low molecular weight organic acids in the liquid NBRIP medium containing biochar enriched with phosphate Bayóvar (100 mg L⁻¹ of P) as a function of the inoculation of phosphate-solubilizing bacteria

Oxalic (1.23)

–

763 ± 14.1

1618 ± 52.7

185 ± 22.8

1082 ± 395

149 ± 36.9

Quinic (3.46)

1297 ± 66.7

446 ± 121

969 ± 149

173 ± 102

600 ± 126

261 ± 99.0

D-malic (3.40)

–

–

–

431 ± 248

–

–

Acetic (4.76)

59.6 ± 4.1

–

–

61.5 ± 1.80

–

–

Succinic (4.16)

676 ± 393

140 ± 19.5

–

395 ± 16.7

–

–

Citric (3.14)

84.1 ± 16.6

–

–

–

–

20.0 ± 3.70

Lactic (3.08)

–

–

353.6 ± 63.7

–

–

–

Total

2116 ± 481

1350 ± 154

2941 ± 265

1245 ± 391

1683 ± 521

431 ± 139