Friday 15 November 2013

DNA BARCODING TO INCREASE AUTHENTICITY OF MEDICINAL PLANTS

The need and use of medicinal plants in Nigeria is growing at a tremendous rate. Whether for food or as medicines for ailments ranging from common cold, malaria and even  more complicated health problems such as hypertension and diabetes, Nigerians of all ages and classes find it easier to consume the herbal remedies produced from medicinal plant.
Picture of Herbarium at the National Parks Service, Abuja, Nigeria. Taken by Comfort Ndefo
The World Health Organisation (WHO) defines traditional medicine as the
sum total of all the knowledge and practical, whether explicable or not, used in the diagnosis, prevention and elimination of physical, mental or social imbalance and relying exclusively on practical experience and observation handed down from generation to generation, whether verbally or in writing. Traditional medicine might also be considered as a solid amalgamation of dynamic medical know how and ancestral experience.

 These traditional medicines are adjudged as potent by their users.  However , oftentimes, problems arise from consumption of  either overdose, under dose or even some natural toxins within the plant due lack of scientific information of the components of the plant.
According to, a postdoctoral fellow and College of Arts & Sciences alumni, Dr. Allan Showalter, “Misidentifications or adulteration of authenticated materials can lead to reduced effectiveness of herbal products or accidental poisonings. Barcoding provides a way to confirm the identification of raw plant material and establish a level of quality assurance.
The DNA Barcoding is an exciting new tool for taxonomic research. The   DNA barcode is a very short, standardized DNA sequence in a well-known gene. It provides a way to identify the species to which a plant belongs.

Barcoding is generating a global, open access library of reference barcode sequence which enables non-taxonomists to identify specimens.

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