The phrase "active extract" is correct and usable in written English.
It can be used in contexts related to herbal medicine, scientific research, or any field where a substance is derived from a source and retains its properties.
Example: "The active extract of the plant has been shown to have significant health benefits."
Alternatives: "bioactive extract" or "functional extract".
The results of the antibacterial activity of the most active extract determined by MICs are represented in Additional file 3. The MICs of aqueous-MeOH ranged between 49 and 78 μg/ml.
The IC50 of the active extract showed potent inhibitory activity for F. assafoetida (IC50 3.2 μg/ml) and moderate activity for Z. officinalis (33.6 μg/ml).
The most active extract (DE) presented a moderate activity for all cell lines with selectivity for K562 (TGI = 3.6 μg/mL) and MCF-7 (TGI = 41.1 μg/mL) (Table 4) while DHE extract displayed the lowest activity with selectivity for K562 (TGI = 17.0 μg/mL) and 786-0 (TGI = 155.7 μg/mL) (Table 4).
Interestingly, compound 2 isolated from the most active extract GNB, also exhibited the best activity, preventing the growth of all the fourteen tested microorganisms.
Interestingly, 4-prenyl-2- 3,7-dimethyl-2,6-octadienyl -1,3,5,8-tetrahydroxyxanthone (2), isolated from the most active extract GNB, also showed the best activity amongst compounds, inhibiting the growth of all the fourteen tested microorganisms.
Also, the in vivo activity of Olax subscorpioidea extract (the most active extract) was evaluated in rat model of disseminated candidiasis due to Candida albicans by estimating the fungal burden in blood and kidney.
All types of extracts (HexE, EtAcE, MeE and AqE) exerted wound healing activity, but EtAcE containing asiatic acid was the most active extract for wound healing.
A light non-greasy formula based on actives extracted from Beech Tree Buds and stabilised using Ultra High Frequencies.
This was done to confirm the activity of active extracts and to determine their IC50, IC100 and selectivity index (SI) values.
Approximately more than half of the active extracts (5) displayed antimicrobial activity against S. typhimurium.
Thus, eliminating such undesirable components in Nefang or selectively combining the active extracts might increase overall activity and tolerability as suggested elsewhere [ 58].
