Payang-payang-gubat is a half-woody,
erect, smooth plant growing to a height of 30 centimeters. Leaves are
very thin, elliptic to elliptic-lanceolate, 4 to 12 centimeters long, 2 to 6 centimeters wide,
pointed at both ends. Cymes are flat-topped, smooth or hairy,
2 to 7 centimeters in diameter, with subumbellate spreading branches. Calyx-teeth
are very short. Corolla is white and smooth, with very short, obtuse lobes
that are keeled at the back. Capsules are pedicelled, 2 to 5 millimeters in
diameter. Seeds are many, minute and angled.
- In thickets and
forests at low altitudes, from the Batan and Babuyan Islands and northern Luzon to Palawan and Mindanao.
- Also occurs in India to Malaya.
- Contains starch, chlorophyll,
and a light-brown resin soluble in chloroform.
- Comparative studies on camptothecin content showed low levels of alkaloids.
- Main chemical constituent is a monoterpenoid quinoline alkaloid called camptothecin.
- Alcohol extract of leaves yielded alkaloids, carbohydrates and glycosides, phenolic compounds, tannins, flavonoids, gums and mucilage. Petroleum ether extract yielded phytosterols, fixed oils, and fats. (13)
- Considered antibacterial, laxative, tonic, sedative.
- Bark of root considered laxative and sedative.
- Studies have shown antioxidant, antivenom, antiproliferative, cancer chemopreventive, membrane stabilizing, thrombolytic activities.
Roots, bark and leaves.
· An agreeable bitter tonic.
· Decoction of
leaves, roots and bark (one part in 10) in half-ounce doses are stomachic.
· Bark of root is sedative and laxative.
· Decoction of leaves used for cleaning ulcers.
· In Malaysia, used for wound healing, enlarged spleens and to alleviate cough.
· In India, the bitter root of O mungos used as an antidote for snake bites. Also, the root extract, mixed with powder of white gulaganji to make a paste, applied locally or given orally. For wound healing, whole plant is ground into a paste with coconut oil, applied topically on affected areas to heal wounds. In Tamil Nadu, leaves and roots used for poisonous bites and external tumors. Roots extensively used by local medicine men.
· In Ayurveda plant pacifies vitiated kapha, wounds, ulcers, worm infestation, snake poison, skin diseases, and cancer.
• Camptothecin / Anti-Cancer: Camptothecin is an anticancer quinoline alkaloid effective against colon cancer, acting through inhibition of the enzyme DNA topoisomerase. Comparative study showed the highest yields in N foetida, with low levels of the
alkaloid with O mungos and O rugosa. (1)
• Antivenom Activity: Study showed inhibition of the effects of Naja nigricollis venom by aqueous extract of O mungos root. The extract also showed dose-related inhibition of blood clotting induced by Echis carinatus venom.
• Cancer Chemopreventive / Luteolin-7-O-glucoside: Study isolated phytocompound Luteolin-7-O-glucoside (LUT7G) from the leaves. LUT7G induced apoptosis by scavenging ROS and suppressing the expression of ß-catenin. Results suggest a potent anticancer drug for colon carcinogenesis. (7)
• Antioxidant Activity / Preliminary Cytotoxicity: Study of a methanolic extract of the whole plant showed the dichlormethane soluble fraction with the highest amount of phenolic compounds and also revealed significant antioxidant activity. Brine shrimp lethality bioassay showed a crude extract to possess cytotoxic principles. (8)
• Antioxidant / Antiproliferative: Study evaluated the antioxidant and antiproliferative activities of 10 traditional medicinal plants, including O. mungos. All tested extracts showed significant concentration- and time-dependent antioxidant and antiproliferative activities, with O. mungos sixth in descending order. (9)
• Neutralizing Effect / Roots / Daboia russelii Venom: Study in a chick embryo model showed a root extract of O. mungos to possess potent anti-snake venom neutralizing compounds which inhibit the viper venom activity. (12)
• Membrane Stabilizing / Thrombolytic Effects: Study evaluated methanol extracts and partitionates of O. mungos, M. macrophylla, G. philippensis and S. nodiflora for membrane stabilizing and thrombolytic activities. The petroleum ether soluble fraction of O. mungos showed 61.16% and 24.75% inhibition of RBC hemolysis caused by hypotonic solution and heat. The carbon tetrachloride soluble fraction of O. mungos showed the highest thrombolytic activity with clot lysis value of 50.09%. (14)
• Anticancer / Dalton's Ascitic Lymphoma / Leaves: Study evaluated the anticancer potential of alcohol and aqueous extracts of leaf of O. mungos on DAL in mice. Results showed significant normalization of profound proliferation of tumor cells in the peritoneal cavity of animals. Significant changes (p<0.001) were observed in tumor and hematological parameters. (15)