Crude Drug
Crude drug
A crude drug is any naturally occurring, unrefined substance derived from organic or inorganic sources such as plant, animal, bacteria, organs or whole organisms intended for use in the diagnosis, cure, mitigation, treatment, or prevention of disease in man or other animals.
Crude drugs are unrefined medications in their raw or natural forms. Prior to the 1950s, every pharmacy student learned about crude drugs in pharmacognosy class. Pharmacognosy is the study of the proper horticulture, harvesting and uses of the raw medications found in nature.
Raising, harvesting and selling crude drugs was how many large pharmaceutical companies started out. Companies such as Eli Lilly and Company sold crude drugs to pharmacists to save them time and money, but the early pharmacy graduate would know how to raise their own crude drugs if need be.
1. Collecting of medicinal plants
A. Suitable time for collection
The amount of a constituent is usually not constant throughout the life of a plant.
The stage at which a plant is collected or harvested is, therefore, very important for maximizing the yield of the desired constituent.
The differences are sometimes not only quantitative but also qualitative.
B. Rules for collection
The following general rules are based on assuming that the material is best collected when the organ in question has reached its optimal state of development:
1.Roots and rhizomes are collected at the end of the vegetation period, i.e. usually in the autumn. In most cases they must be washed free of adhering soil and sand.
2.Bark is collected in the spring.
3.Leaves and herbs are collected at the flowering stage.
4.Flowers are usually gathered when fully developed.
5.Fruits and seeds are collected when fully ripe.
C. Methods of collection
Medicinal plants must be largely collected by hand. This is especially true in the case of wild plants.With cultivation on a large scale, it may be possible to use modern
A crude drug is any naturally occurring, unrefined substance derived from organic or inorganic sources such as plant, animal, bacteria, organs or whole organisms intended for use in the diagnosis, cure, mitigation, treatment, or prevention of disease in man or other animals.
Crude drugs are unrefined medications in their raw or natural forms. Prior to the 1950s, every pharmacy student learned about crude drugs in pharmacognosy class. Pharmacognosy is the study of the proper horticulture, harvesting and uses of the raw medications found in nature.
Raising, harvesting and selling crude drugs was how many large pharmaceutical companies started out. Companies such as Eli Lilly and Company sold crude drugs to pharmacists to save them time and money, but the early pharmacy graduate would know how to raise their own crude drugs if need be.
1. Collecting of medicinal plants
A. Suitable time for collection
The amount of a constituent is usually not constant throughout the life of a plant.
The stage at which a plant is collected or harvested is, therefore, very important for maximizing the yield of the desired constituent.
The differences are sometimes not only quantitative but also qualitative.
B. Rules for collection
The following general rules are based on assuming that the material is best collected when the organ in question has reached its optimal state of development:
1.Roots and rhizomes are collected at the end of the vegetation period, i.e. usually in the autumn. In most cases they must be washed free of adhering soil and sand.
2.Bark is collected in the spring.
3.Leaves and herbs are collected at the flowering stage.
4.Flowers are usually gathered when fully developed.
5.Fruits and seeds are collected when fully ripe.
C. Methods of collection
Medicinal plants must be largely collected by hand. This is especially true in the case of wild plants.With cultivation on a large scale, it may be possible to use modern