Table 4 Weight Average (Mw) and Number Average (Mn) molecular weight, and Polydispersity (P), as calculated from UV-detected HPSEC chromatograms for humic substances (HS) extracted from artichoke (CYN), coffee grounds (COF), and pepper (PEP) composted residues, before and after addition of acetic acid (AcOH). The coefficients of variation were invariably smaller than 5%
From: Antibacterial and antioxidant properties of humic substances from composted agricultural biomasses
| Â | Peak interval (mL) | Mw | Mn | P |
|---|---|---|---|---|
HS-CYN | 4.5–14.21 | 50,373.8 | 34,510.4 | 1.5 |
HS-CYN + AcOH | 4.9–16.1 | 40,690.5 | 16,999.7 | 2.4 |
HS-COF | 4.68–16.2 | 47,454.5 | 23,253.8 | 2.0 |
HS-COF + AcOH | 4.68–16.2 | 26,333.1 | 9344.3 | 2.8 |
HS-PEP | 4.6–14.8 | 49,024.9 | 29,794.5 | 1.6 |
HS-PEP + AcOH | 4.7–17.0 | 40,910.4 | 13,304.4 | 3.1 |