I want to determine total flavonoids from plants samples but I am afraid I might not have enough dry sample (weight) for proper determination of flavonoids. is less than 100 mg enough for extraction?
The amount of dry sample required for proper determination of flavonoids can vary depending on the specific extraction method and the sensitivity of the analytical technique used. However, in general, a minimum of 100 mg of dry sample is considered a good starting point for most extraction methods
It is possible to determine TFC in this case. However, lower mass can increase possibility of error. If this is my sample I will dissolve it in 1 mL of some MeOH or EtOH and use extract for further determination.