A DNA-based test developed in Hong Kong can check powdered antler slices within one day, compared with three days using the traditional method, according to the Government Chinese Medicines Testing Institute.
The process starts with an extraction solution added to a powdered sample. Staff then copy and amplify its DNA before applying a specified treatment. The institute says an orange appearance under ultraviolet light indicates genuine antler. Darwin Mak Wai-lai, the Department of Health’s assistant director responsible for Chinese medicine, said the shorter process could speed up decisions on whether antler slices are authentic, improve quality control and reduce costs.
The institute was established in 2017 and has completed 22 specialist projects. Its work also includes a chemical-analysis method for Chinese herbal compound granules, commonly known as Chinese herbal granules. The method is intended to work across different prescriptions and can test chemical markers in several herbs at the same time.
The institute’s permanent building in Tseung Kwan O began operating in phases late last year. Its four laboratories now have additional advanced instruments, including an electronic sensory-analysis device commonly called an electronic tongue.
The electronic-tongue work is being carried out as a pilot project. The institute is exploring how to digitise the tastes of medicinal herbs, build a database of taste data and develop identification methods based on those records.