What are different techniques used in conservation of medicinal plants?
Ex-Situ Conservation Conservation of medicinal plants can be accomplished by the ex-situ i.e. outside natural habitat by cultivating and maintaining plants in botanic gardens, parks, other suitable sites, and through long term preservation of plant propagules in gene banks (seed bank, pollen bank, DNA libraries, etc.)
How many methods are there for the selection of medicinal plants?
[2,5] Several methods were used in the extraction of medicinal plants such as maceration, infusion, decoction, percolation, digestion and Soxhlet extraction, superficial extraction, ultrasound-assisted, and microwave-assisted extraction.
What is a texture of a leaf?
Texture usually refers to the overall size of the leaves so textural sizes are relative to one another. Grasses have narrow, fine textured leaves. Salvias have medium textured leaves. Large Hosta leaves are considered coarse textured. Texture can also refer to the smoothness or roughness on the surface each leaf.
What are the major steps of medicinal plants processing?
The primary herb processing steps include drying, size reduction, grinding and sieving. The secondary processing involves extraction with the aid of suitable solvents, concentration and drying.
Why do we conserve medicinal plants?
Medicinal plants are globally valuable sources of new drugs [1–4]. There are over 1300 medicinal plants used in Europe, of which 90 % are harvested from wild resources; in the United States, about 118 of the top 150 prescription drugs are based on natural sources .
Why we should conserve medicinal plants?
Cultivation and conservation. Medicinal plants are valuable natural resources. Unplanned development and overexploitation of medicinal plants from non-managed, natural resources has not only resulted in shortage of various herbs, but extinction of several species in nature.
What is the texture of a plant?
The term “texture” in regards to garden design does not refer to how a plant feels but rather the overall visual texture of the plant—the size and shape of the plant and its foliage. Common words to describe the texture of a plant include bold, soft (or fine) and coarse.
How are medicinal plants stored?
Medicinal plants are spread in thin layers on flat winnowing baskets or trays placed on stands in full sun. For plants sensitive to solar heat, air-drying is recommended; herbs should be dried out of the sun in well-ventilated places on winnowing baskets or trays placed on shelves.
How do you take care of a medicinal plant?
Growing Herbs & Herb Garden Care
- Bright Sun for Happy Herbs. Most herbs grow best in full sun. Plant your herbs where they will receive at least 6 to 8 hours of direct sunlight each day.
- Watch the Water. While herbs appreciate water during especially hot or dry weather, don’t overdo it.
What is extraction techniques of medicinal plants?
Extraction techniques of Medicinal plants Extraction, as the term is used pharmaceutically, involves the separation of medicinally active portions of plant or animal tissues from the inactive or inert components by using selective solvents in standard extraction procedures.
What are the different methods of texture feature extraction?
This paper provides a comprehensive survey of the texture feature extraction methods. The latter are categorized into seven classes: statistical approaches, structural approaches, transform-based approaches, model-based approaches, graph-based approaches, learning-based approaches, and entropy-based approaches.
Is there a standard extraction method in Ayurveda for herbal drugs?
In Ayurveda, this method is not yet standardized but, with the extraordinarily high degree of advancement in fermentation technology, it should not be difficult to standardize this technique of extraction for the production of herbal drug extracts.
What is texture analysis used for?
View more Abstract: Texture analysis is used in a very broad range of fields and applications, from texture classification (e.g., for remote sensing) to segmentation (e.g., in biomedical ima… View more