Dear Gdal Senarathna,

To preserve liquid plant extracts without compromising their functional and organoleptic properties for an extended period (beyond 4-6 months), a combination of techniques can be employed. One approach is to use a process called freeze-drying, also known as lyophilization, which involves freezing the liquid extract and then reducing the surrounding pressure to allow the frozen water to sublimate. This method effectively removes moisture from the extract without subjecting it to high temperatures, thereby preserving its properties.

In addition, utilizing natural preservatives such as ascorbic acid (vitamin C) or tocopherols (vitamin E) can help to inhibit oxidation and extend the shelf life of the liquid plant extract. These antioxidants can prevent the degradation of bioactive compounds and essential oils within the extract.

Furthermore, packaging the preserved liquid extract in dark, airtight containers to minimize exposure to light and oxygen is crucial. Storing the containers in a cool, dry environment, away from direct sunlight and fluctuating temperatures, will further contribute to maintaining the extract's stability and quality over an extended period.

Regularly monitoring the extract for any signs of microbial growth, changes in color, aroma, or taste, and conducting stability tests can ensure that the preservation methods are effectively maintaining the extract's properties for an extended duration.

Sincerely,

Vitali

Thank you doctor for your response.