It is always nice to remember that we are neither chemists
nor pharmacists when preparing our herbal remedies at home. We are only doing
it ourselves and not really making to vend, so why make so much at once?
Most herbal preparations are made from raw plant or botanical materials which are susceptible to rapid degradation if not preserved. The biggest issue faced by those who make
their preparations at home is the shelf life, so when you decide to make herbal
preparations by yourself, it is definitely better to make enough to use for a
short time to avoid spoilage.
The solvent used to extract the active ingredients in herbal
materials can also act as a preservative which can add to the shelf life. They
are usually extracted in solvents like water, oils, vinegar, glycerin, honey
and alcohol.
Water-based extracts
Those extracted in water are usually called teas, infusions
and decoctions. Water increases the moisture content of your herbs which is a
factor that favours the growth of microbes. These are the ones with the
shortest shelf life unless they are preserved with preservatives which may not
be desirable for inclusion. Teas are best for one time use and any remnants are
best for refrigeration or heating up later. Heating or refrigeration is best
for teas, infusions and decoctions.
Other solvents
Alcohol is a good solvent for extraction and preservation.
Herbal preparations that are extracted in alcohol are usually called tinctures.
Herbs that are made with alcohol have the longest shelf life, followed by those
made with vinegar and glycerin. Those that are prepared with honey have a
longer shelf life than those with water.
Other materials you should definitely make a small amount at
a time are;
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