Antimicrobial Activity of Cold and Hot Successive Pseudobulb Extracts of Flickingeria nodosa (Dalz.) Seidenf

Abstract

Flickingeria nodosa (Dalz.) Seidenf is a medicinally important orchid plant. It is used for the treatment of asthma, bronchitis, throat infections, dermatological infections and also used as blood purifier. Based on its importance the present study was designed to evaluate its antibacterial and antifungal activity against human pathogens with cold and hot successive extracts. The antimicrobial activities of the plant extracts were evaluated against 7 bacterial and 6 fungal strains using well diffusion method on Mueller Hinton agar medium. The cold water extract has antibacterial activity against S. aureus and S. citreus with maximum zone of inhibition. The cold chloroform extract has good antifungal activity against T. mentagrophytes. The plant can be a source material to herbal drug industry since it has some important antimicrobial components in the extracts that can be used for the development of therapeutic phytomedicine.

Comparative Antimicrobial Study of Different Parts of <i>Ocimum americanum</i> L., <i>O. basilicum</i> L. and <i>O. sanctum</i> L. in Comparison to Standard Antibiotics Collected from Dibrugarh, Assam

“…Zalazare et al [61] recorded that ethanol and hot water extracts of the mushrooms contained higher bioactive substances than cold water extracts. Variable antimicrobial activity was observed in cold and hot water extracts against tested bacterial pathogens [62][63][64][65]. According to some other workers, activity of samples also may vary with temperature [66][67][68][69].…”

Ethnobotany and Recent Advances in Indian Medicinal Orchids

“…The plant is also used for the treatment of asthma, bronchitis, consumption, fever, burning sensation, biliousness, and diseases of the blood [22]. The cold chloroform extract of pseudobulbs shows good antifungal activity against Trichophyton mentagrophytes, a fungus that causes athlete's foot, inflammation of skin, and infection of face, scalp, and body [83].…”

Genomics and Evolution in Traditional Medicinal Plants: Road to a Healthier Life

“…In south Asia, orchid bulb is used for the treatment of asthma, bronchitis, throat infections, dermatological infections, and also as a blood purifier. 38 Sequencing the complete cp genomes of the medicinal plant Dendrobium officinale (Tie Pi Shi Hu in TCM) and the ornamental orchid Cypripedium macranthos revealed their gene content and order, as well as potential RNA editing sites. 39 The cp genomes of these two species and those of five known photosynthetic orchids are similar in structure as well as gene order and content, but the organization of the IR/SSC junction and ndh genes is distinct.…”