for context, they are methanol/water extracts that were concentrated in a rotavapor and then freeze-dried.
thank U.
U should first take the weight of empty beaker then add your plant extract and after totally drying.
Total Weight-weight of beaker=weight of extract
To report grams of dry weight or dry sample of a plant extract that was concentrated and then freeze-dried, you can use the following format:
- Dry weight (g): [Insert the weight of the dry sample in grams].
This format clearly indicates the weight of the dry sample, which is important to specify when discussing plant extracts that have undergone concentration and freeze-drying processes.
To report the grams of dry weight or dry sample of a plant extract that was concentrated and then freeze-dried, you can follow these steps:
Determine the moisture content of the freeze-dried extract by gravimetric analysis. Weigh a small amount of the dried extract (around 0.5 g) before and after drying in an oven at 70°C until constant weight is achieved
. This will give you the moisture content as a percentage.
Calculate the dry weight of the extract by multiplying the total weight of the freeze-dried extract by the percentage of dry matter (100% - moisture content percentage). For example, if you have 10 g of freeze-dried extract with a moisture content of 5%, the dry weight would be:
10 g × (100% - 5%) = 10 g × 0.95 = 9.5 g
Report the dry weight of the extract in grams, along with the moisture content percentage. For example:
"The freeze-dried extract yielded 9.5 g of dry matter, with a moisture content of 5%."
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