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[Technology of extract improving the immune system]
Algirdas Baranauskas1, Jurga Bernatoniene, Raimondas Radziūnas
1Department of Drug Technology and Social Pharmacy, Kaunas University of Medicine, Kaunas, Lithuania.
Medicina (Kaunas, Lithuania)
|September 15, 2005
Summary
The optimal production of Echinacea purpurea extract for immune support uses 50% ethanol and repercolation. This method ensures maximum active compounds and a stable product with a two-year shelf life.
Area of Science:
- Pharmacognosy and Phytochemistry
- Natural Product Chemistry
- Herbal Medicine Production
Background:
- Echinacea purpurea is widely used for immune system support.
- Optimizing extraction parameters is crucial for maximizing active compound yield and product stability.
- Previous studies have explored various extraction methods, but optimal conditions for large-scale production require further investigation.
Purpose of the Study:
- To determine the optimal ethanol concentration, particle size, and extraction method for producing a stable and potent Echinacea purpurea extract.
- To evaluate the quality and stability of the Echinacea purpurea extract over an extended storage period.
Main Methods:
- Extraction of Echinacea purpurea using varying ethanol concentrations (40-96% v/v).
- Comparative analysis of extraction methods, focusing on repercolation.
- Optimization of extract flow speed (0.2 ml/min).
- Quality control testing including appearance, refractive index, density, ethanol concentration, dry residue, and chicoric acid content over 26 months.
Main Results:
- 50% ethanol (v/v) was identified as the optimal concentration for extraction, balancing active compound yield and avoiding undesirable pigment formation.
- Repercolation proved to be the most effective method for maximizing the extraction of active substances.
- The extract demonstrated stability over 26 months, with acceptable levels of active compounds and no significant alterations in physical or sensory properties, despite occasional natural sediment formation.
- A two-year expiry period was confirmed for the Echinacea purpurea extract.
Conclusions:
- The study successfully established optimal parameters for the production of a high-quality, stable Echinacea purpurea immune-enhancing extract.
- Utilizing 50% ethanol and the repercolation method, along with controlled flow speed, ensures maximum yield and efficacy.
- The validated two-year shelf life supports the commercial viability and reliability of this herbal medicinal product.