Saponins Mean ± SD Zahnic acid tridesmoside 0.97 ± 0.15 Medicagenic acid 3 GlcGlc. 28 AraRhaXyl 0.77 ± 0.14 Medicagenic acid 3 GlcA. 28 AraRhaXyl 5.82 ± 0.43 Medicagenic acid 3 Glc. 28 AraRhaXyl 0.52 ± 0.52 Soyasaponin I 2.30 ± 0.21 Total 10.39 ± 0.82

Table 6: Concentration of saponins (g kg-1) in APC from harvests of four subsequent years (2009-2012).