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. Author manuscript; available in PMC: 2016 Feb 10.
Published in final edited form as: Biotechnol Adv. 2015 Aug 15;33(8):1582–1614. doi: 10.1016/j.biotechadv.2015.08.001

Fig. 1.

Fig. 1

PubMed publication trend analysis, demonstrating increased scientific interest in plant-derived natural product pharmacology, chemistry, and drug discovery. The data were retrieved with MEDSUM (http://webtools.mf.uni-lj.si/public/medsum.html) on 15th of June 2015, and cover the time period 1982–2012 (newer data are not included because of the lack of coverage). As indicated, the used search keywords were plant chemistry, plant pharmacology, plant natural product, plant compound, plant drug discovery, plant bioactivity, and the total number of PubMed publications per year was retrieved by search with the symbol *. The trend analysis reveals that the increase of PubMed citations in the target areas is faster than the increase in the total number of annual PubMed citations (indicated by the steeper slopes of the respective trend lines).