Abstract

MEDICINAL ASPECT AND ANTIMICROBIAL ACTIVITY OF PHENOLIC EXTRACTS OF MEDICINALLY VALUABLE ORNAMENTAL FLOWERING PLANTS: A REVIEW

Ritika Gupta, Deepak Chauhan and Abhimanyu Kumar Jha*

ABSTRACT

Ornamental flowering plants (OFPs) grown for display purpose, attraction and aroma, while some plants are ornamental and medically valuable. In recent researches, it has been investigated that some OFP’s parts and their extracts have medicinal value and now these plants are also counted as medicinal plant. As microorganisms are becoming resistant to present-day antibiotics, some biologically active compounds present in the plant show potential antimicrobial effect has always been of great interest to scientists. Many infectious diseases have been known to be treated with plant extract throughout the history of mankind. Natural products (plant synthesized secondary metabolites and phytochemicals), either as pure compounds or as standardized plant extracts; provide unlimited opportunities for new drug leads because of the unmatched availability of chemical diversity. Phenolic compounds are one of the major compounds that present in most plants. Rose (Rosa rugosa), lavender (Lavandula angustifolia), sage (Salvia officinalis), marigold (Tagetes erecta), lily (Lilium candidum), cockscomb (Celosia cristata), and noble dendrobium (Dendrobium nobile) are some OFP’s having rich source of phenolic compounds which shows antimicrobial activity. Based on their chemical structures, phenolic compounds of these plants can be divided into different subgroups, such as phenolic acids, tannins, coumarins, quinines, flavonoids, saponins, terpenoids, alkaloid, etc. that also shows antimicrobial effect. In this review, our main focus is on the antimicrobial effect of the total phenolic concentration of OFP against different microbial cultures.

Keywords: Ornamental flowering plants (OFPs), medicinal value, antimicrobial effect, secondary metabolites, phenolic compounds.