Chemical variability along the value chains of turmeric (Curcuma longa): A comparison of nuclear magnetic resonance spectroscopy and high performance thin layer chromatography

Herbal medicine value chains have generally been overlooked compared with food commodities. Not surprisingly, revenue generation tends to be weighted towards the end of the chain and consequently the farmers and producers are the lowest paid beneficiaries. Value chains have an impact both on the livelihood of producers and on the composition and quality of products commonly sold locally and globally and consequently on the consumers. In order to...