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The wavenumber of ginkgolic acid_
| Wavenumber, cm−1 | Main characteristic peak assignment | The group |
|---|---|---|
| 3,426.36 | O–H stretching vibration | −OH |
| 2,925.45 | C–H stretching vibration | −CH3 |
| 1,718.90 | C=O stretching vibration | −C=O |
| 1,626.12 | Aromatic ring – C=C stretching vibration | Benzene ring |
| 1,484.59 | Aromatic ring – C=C stretching vibration | Benzene ring |
| 1,077.92 | C–O stretching vibration | −C–OH |
| 818.20 | Aromatic ring =C–H plane bending vibration | −C–H |
| 778.24 | Aromatic ring =C–H plane bending vibration | −C–H |
Inhibition of fungi by ginkgolic acid_
| Species | Control | Concentration of ginkgolic acid | ||
|---|---|---|---|---|
| 2.5 mg · mL-1 | 5 mg · mL-1 | 10 mg · mL-1 | ||
| Fungistatic rate, % | ||||
| Nigrospora oryzae | 0.792 ±0.023 | 62.032 ±0.056 | 65.822 ±0.032 | 65.291 ±0.028 |
| Penicillium expansum | 2.883 ±0.021 | 2.891 ±0.048 | 3.041 ±0.043 | 3.044 ±0.031 |
| Alternaria alternata | 1.271 ±0.019 | 49.374 ±0.052 | 56.963 ±0.029 | 55.563 ±0.052 |