Table 4.
The most abundant phenolic compounds identified in the leaf methanol extract from U. dioica and D. viscosa by HPLC and their mixtures used in vitro against A. alternata isolate.
| Compounds | Fungal growth inhibition (%) | |
|---|---|---|
| U. dioica MLE | D. viscosa MLE | |
| Control | 0.00m | 0.00m |
| Positive control (Ridomil) | 83.33a ± 1.11 | 83.33a ± 1.11 |
| Ferulic acid | 55.18i ± 1.69 | 55.92g,h ± 0.64 |
| Coumaric acid | 40.00k,l ± 1.11 | 50.00i ± 1.11 |
| Caffeic acid | 50.00i ± 1.11 | 43.33j ± 1.11 |
| α-Tocopherol | 44.4j ± 1.11 | 44.07j ± 1.69 |
| Ferulic + coumaric acids | 51.11i ± 1.11 | 67.03b ± 0.64 |
| Ferulic + caffeic acids | 60.74c,d,e ± 0.64 | 58.88e,f ± 2.93 |
| Ferulic acid + α-tocopherol | 60.00d,e,f ± 1.11 | 61.11c,d,e ± 1.11 |
| Caffeic + coumaric acids | 58.14f,g ± 1.69 | 61.48c,d ± 1.69 |
| Caffeic acid + α-tocopherol | 39.25l ± 0.64 | 42.59j,k ± 1.69 |
| Coumaric acid + α-tocopherol | 40.37k ± 1.69 | 55.18h ± 1.69 |
| Ferulic acid + coumaric acid + caffeic acid + α-tocopherol | 69.25b ± 1.69 | 62.96c ± 1.69 |
Means with the same letter are not significantly different according to LSD at 0.05 level of probability.