Botany, Uses, Chemistry and Pharmacology of Ficus microcarpa: A Short Review

Chan, Tangah, Inoue, Kainuma, Baba, Oshiro, Kezuka, and Kimura: Botany, Uses, Chemistry and Pharmacology of Ficus microcarpa: A Short Review



Figs of the genus Ficus consist of over 800 species and they belong to the family Moraceae, which has about 40 genera.1 In the Plant List of 2013, 919 species of Ficus have been listed as accepted names including that of F. microcarpa.2 There are 99 species in China of which 16 are endemic and two are introduced.3 In Taiwan, 21 species are endemic and 20 are introduced.4 Figs have historical and religious significance. According to the biblical book of Genesis, Adam and Eve covered their genitals in shame after consuming the forbidden fruits of Ficus sycomorus in the Garden of Eden.5 Gautama Buddha attained enlightenment while meditating underneath the sacred Bodhi tree (Ficus religiosa). Fig trees attract frugivorous birds and mammals,6,7 and are respected as abodes for spirits.5

Fruits and leaves of Ficus species are an important source of food and medicine in South China.8 The foliage is harvested as fodder for livestock in Nepal.9 Trees of Ficus carica (common fig) have been cultivated in many countries for their edible fruits which are consumed raw, dried, canned and in other processed forms.1 Major pharmacological properties of Ficus species include anticancer, anti-tumour, anti-diabetic, anti-inflammatory, antiulcer, hypoglycaemic, hypocholesterolaemic, gastroprotective and hepatoprotective activities.1,10

In 2008, a review on the genus Ficus was published covering aspects of botany, ethno-medicine, bioactivities, chemical constituents, clinical studies and toxicology.1 Since then, Ficus species reviewed include F. religiosa,11-13 F. racemosa,14-16 F. hispida,17 F. bengalensis,18 F. thonningii19 and F. deltoidea.20 To the best of our knowledge, this is the first review on F. microcarpa.

Botany and Uses

Ficus microcarpa L. f. with common names of Chinese or Malayan banyan, Indian laurel and curtain fig, is an evergreen tree up to 30 m in height, with dangling aerial roots which develop into columnar stems.21,22 Leaves are alternate, simple, leathery, glossy green and oval-elliptic with slightly pointed tips. Flowers are tiny, unisexual and borne within a round structure called the syconium or fig. Fruits are small and turn from pink to purple when ripe. Photos of the aerial roots, columnar stems, leaves and fruits of F. microcarpa are shown in Figure 1.

The geographical distribution of F. microcarpa stretches from South, Southeast and East Asia through Australia and the Pacific Islands.21,23 It is commonly found in coastal areas. The species is a popular ornamental plant that is potted as bonsai or grown in gardens as topiary. Believed to be abodes for spirits, trees are sacred and often grown in the vicinity of temples. In Sabah, Malaysia, young leaves of F. microcarpa (ara jejawi) have been reported to be the most preferred food item of the proboscis monkey Nasalis larvatus, out of 11 plant species surveyed.24

In Okinawa, Japan, dried leaves, aerial roots and bark of F. microcarpa (gazyumaru) have been used as folk medicine for controlling perspiration, alleviating fever and relieving pain.25 In China, F. microcarpa (rong shu) is commonly planted as a shade tree,3 and has been used to treat flu, malaria, acute enteritis, tonsillitis, bronchitis and rheumatism.26 The Okinawan soba is a famous noodle made by kneading wheat with the lye of wood ash. The wood ash of F. microcarpa yields noodles of high quality. In South Asia, the plant has been used as traditional medicine for the treatment of type-2 diabetes.27


Compounds isolated from the different plant parts of F. microcarpa are listed in Table 1. Of these, the aerial roots are most studied, and yielded the highest number of compounds (86), notably, triterpenoids (56), phenylpropanoids (13) and phenolic acids (12) (Figure 2).

Triterpenoids of F. microcarpa reported in two or more scientific papers are friedelin,31,52 lupeol,31,50 oleanolic acid,25,41,52 20-taraxastene-3β,22α-diol46,50 and ursolic acid.31,45 They contain friedelane, ursane, oleanane, lupane, cycloartane, taraxerane, peroxy and cyclopropyl skeletons. Betulinic acid, betulonic acid, lupeol and lupeol acetate belong to the lupane-type of triterpenoids consisting of four six-rings and one five-ring (Figure 3). Oleanolic acid and oleanonic acid have an oleanane structure with five six-rings which is similar to the ursane-type as represented by ursolic acid and ursonic acid. The difference between the oleanane- and the ursane-type is the methyl group localization of the topmost E-ring.53 Triterpenoids are the largest group of secondary plant metabolites with more than 20,000 members known.54 Synthesised by the cyclization of squalenes, tritepenoids belong to two main types. Tetracyclic triterpenoids comprise the dammarane, lanostane, cycloartane, cucurbitane, tirucallane and meliacane types. Pentacyclic triterpenoids include the friedelane, lupane, oleanane and ursane types, which are found in Ficus species. Triterpenoids are known to have remarkable anticancer, antiviral, anti-inflammatory, antimicrobial, hepatoprotective and cardioprotective properties.53,55,56 Compounds common in the leaves of F. microcarpa are flavonoids, megastigmanes and pheophytins (Table 1). Dominant flavonoids are catechin, epicatechin and isovitexin. Phenolic acids are found in the bark and aerial roots, while the bark and leaves yielded sterols.

Pharmacological Properties


Methanol extracts of bark, fruits and leaves of F. microcarpa exhibited potent antioxidant activities of DPPH, ABTS and superoxide radical scavenging.25 Strongest activities were observed in the bark with EC50 values of 7.9, 4.0 and 98 μg/ml, respectively. Isolated from the ethyl acetate fraction of the bark extract, catechol, syringol and p-vinylguaiacol scavenged DPPH radicals with EC50 values of 1.3, 5.4 and 8.8 μg/ml, respectively. The same group of scientists also reported on the total phenolic content and antioxidant activity of F. microcarpa aerial roots.41 Among four fractions of the methanol extract, the ethyl acetate fraction possessed the highest content of phenolic compounds. It also showed the strongest antioxidant activity based on DPPH, ABTS+ and superoxide radical scavenging, reducing power and β-carotene bleaching. Flavonoids isolated from leaves of F. microcarpa were reported to possess strong antioxidant activities of 6.6–9.5 μM trolox equivalent at 2.0 μM concentration.33 They were ficuflavoside, catechin, epicatechin, isovitexin, luteolin 6-O-β-D-glucopyranoside and isosaponarin.

Figure 1:

Aerial roots (top left), columnar stems (top right), and leaves and fruits (bottom) of Ficus microcarpa. 04-g001.jpg


Methanol extracts of bark (BM), fruits (FM) and leaves (LM), and the ethyl acetate fraction of the bark extract (BE) of F. microcarpa exhibited antibacterial activity against Gram-positive bacteria of Bacillus brevis, B. cereus and B. subtilis, and Gram-negative bacteria of Escherichia coli using the disc-diffusion method.25 Based on diameter of inhibition zones the ranking was: BE > BM > FM > LM. The ethyl acetate fraction of the aerial root extract of F. microcarpa also exhibited the strongest antibacterial activity followed by the methanol extract.41 Recently, the antibacterial activity of acetone and aqueous extracts of leaves, stem bark and root bark of F. microcarpa against Gram-positive Staphylococcus aureus, and Gram-negative Pseudomonas aeruginosa and E. coli was reported.57 Based on the diameter of inhibitory zone, antibacterial activity was ranked as root bark > leaves > stem bark.


The cytotoxic efficacy of 11 triterpenes isolated from aerial roots of F. microcarpa was investigated using the methylene blue assay, and tested against HONE-1 nasopharyngeal carcinoma, KB oral epidermoid carcinoma and HT29 colorectal carcinoma human cancer cell lines.45 Ursonic acid and ursolic acid showed potent cytotoxic activity against all three cell lines with IC50 values of 4.0–6.3 μM and 4.7–8.8 μM, respectively. 3β-Acetoxy-25-hydroxylanosta-8,23-diene and acetylursolic acid were only effective against HT29 and KB cells, respectively. Oleanonic acid, acetylbetulinic acid, betulonic acid and 3-oxofriedelan-28-oic acid were effective against HONE-1 and KB cells. All the eight compounds possess a carboxylic acid functionality at C-28 showed significant cytotoxic activities against the tested cell lines with IC50 values of 4.0–9.4 μM Compounds of 3β-acetoxy-12,19-dioxo-13(18)-oleanene, 3,22-dioxo-20-taraxastene and 3β-acetoxy-25-methoxylanosta-8,23-diene did not display any cytotoxic effects with IC50 values >10 μM.45 4-(2-Methylbut-3-en-2-yl)-4’-methoxy-2,5-dihydroxychalcone, a new chalcone from aerial roots of F. microcarpa exhibited weak cytotoxicity against K562 and PC3 human cancer cell lines.26 Plectranthoic acid (Figure 4), a pentacyclic terpenoid isolated from the aerial roots of F. microcarpa was recently reported to possess potent 5’AMP-activated kinase (AMPK) activating properties, far superior than metformin.27 Treatment with plectranthoic acid inhibited proliferation of prostate cancer cells, promoted G0/G1 phase cell cycle arrest, and induced apoptosis in the cancer cells in an AMPK-dependent manner. Plectranthoic acid is therefore a potent activator of AMPK with therapeutic potential against prostate cancer.

Figure 2:

The breakdown of compounds isolated from the aerial roots of Ficus microcarpa. 04-g002.jpg
Table 1:

Compounds isolated from different plant parts of Ficus microcarpa

Compound class and namePlant partReference
4-(2-Methylbut-3-en-2-yl)-4’-methoxy-2,5-dihydroxychalconeAerial root[26]
(GLx Chi) A–CLatex[29]
Ficuschlorins A–DLeaf[30]
Ficusmicrochlorins A–CLeaf[4]
CatechinLeaf, bark[31–33]
EpicatechinLeaf, bark, aerial root, fruit[32–34]
Isolupinisoflavone E*Bark[36]
Luteolin 6-C-β-D-glucopyranosideLeaf[33]
QuercetinLeaf, aerial root, fruit[35]
RutinAerial root[35]
Methyl 4-hydroxy-3-methoxybenzoateBark[31]
Ficusolide diacetate*Heartwood[38]
Fiscusesquilignans A, B*Heartwood[38]
Bridelionoside BLeaf[33]
Dihydroalangionoside ALeaf[33]
Ficusic acidHeartwood[35]
(7E,9Z)-Dihydrophaseic acid 3-O-β-D-glucopyranoside*Aerial root[39]
2,2’-Dihydroxyl etherAerial root[39]
Erythro-guaiacylglycerolAerial root[40]
Erythro-guaiacylglycerol 9-O-β-D-glucopyranoside*Aerial root[40]
Ficuscarpanic acid*Aerial root[39]
Ficuscarpanosides A, B*Aerial root[39,40]
Icariside D2Aerial root[39]
GuaiacylglycerolAerial root[40]
Guaiacylglycerol 9-O-β-D-glucopyranoside*Aerial root[40]
3-(4-Hydroxy-3-methoxy phenyl) propan-1,2-diolAerial root[40]
4-Methoxy guaiacylglycerol-7-O-β-D-glucopyranosideAerial root[40]
(7S,8R)-SyringoylglycerolAerial root[39]
(7S,8R)-Syringoylglycerol-7-O-β-D-glucopyranosideAerial root[39]
Phenolic acids
CatecholBark, aerial root[25,41]
Coumaric acidLeaf, aerial root, fruit[34]
Chlorogenic acidBark[42]
Gallic acidAerial root[34]
Isovanillic acidBark, aerial root[25,41]
Methyl chlorogenateBark[42]
Procyanidins B1, B3Bark[42]
p-PropylguaiacolBark, aerial root[25,41]
p-PropylphenolBark, aerial root[25,41]
4-n-PropylresorcinolBark, aerial root[25,41]
Protocatechuic acidBark, aerial root[25,41,42]
SyringaldehydeBark, aerial root[25,41]
SyringolBark, aerial root[25,41]
VanillinBark, aerial root[25,41]
p-VinylguaiacolBark, aerial root[25,41]
132(R)-Hydroxypheophytin aLeaf[4]
132(S)- Hydroxypheophytin aLeaf[4]
132(R)-Hydroxypheophyton aLeaf[4]
132(S)-Hydroxypheophyton aLeaf[4]
132(S)-Pheophyton aLeaf[4]
132(R)-Pheophyton aLeaf[4]
Pyropheophytin aLeaf[4]
Erogosterol peroxideBark[31]
β-SitosterolBark, leaf[31,33]
β-Sitosterol 3-O-(6’-octadecanoyl) β-D-glucopyranosideLeaf[33]
α-TocopherolAerial root[43]
α-Tocospiros A, B*Aerial root[43]
3β-Acetoxy-12,19-dioxo-13(18)-oleanene*Aerial root[45]
3β-Acetoxy-12β,13β-epoxy-11α-hydroperoxyursane*Aerial root[46]
3β-Acetoxy-11α,12α-epoxy-16-oxo-14-taraxerene*Aerial root[45]
3β-Acetoxy-11α,12α-epoxy-14-taraxereneAerial root[45]
3β-Acetoxy-20α,21α-epoxytaraxastane*Aerial root[49]
3β-Acetoxy-20α,21α-epoxytaraxastan-22α-ol*Aerial root[47]
3β-Acetoxy-21α,22α-epoxytaraxastan-20α-ol*Aerial root[45]
3β-Acetoxy-1β,11α-epidioxy-12-ursene*Aerial root[46]
3β-Acetoxy-11α-ethoxy-12-oleaneneAerial root[48]
3β-Acetoxy-11α-ethoxy-12-ursene*Aerial root[48]
3β-Acetoxy-12α-formyloxy-13,27-cyclours-11α-ol*Aerial root[49]
3β-Acetoxy-11α-hydroperoxy-13αH-ursan-12-one*Aerial root[46]
3β-Acetoxy-11α-hydroperoxy-12-oleaneneAerial root[48]
3β-Acetoxy-11α-hydroperoxy-12-ursene*Aerial root[48]
(20S)-3β-Acetoxy-20-hydroperoxy-30-norlupane*Aerial root[46]
3β-Acetoxy-18α-hydroperoxy-12-oleanen-11-one*Aerial root[46]
3β-Acetoxy-19α-hydroperoxy-20-taraxastene*Aerial root[47]
3β-Acetoxy-11α-hydroxy-11(12→13)abeooleanan-12-al*Aerial root[50]
3β-Acetoxy-15α-hydroxy-13,27-eyclours-11-ene*Aerial root[49]
3β-Acetoxy-11α-hydroxy-12-oleaneneAerial root[48]
3β-Acetoxy-11α-hydroxy-12-ursene*Aerial root[48]
3β-Acetoxy-25-hydroxylanosta-8,23-diene*Aerial root[45]
(20S)-3β-Acetoxylupan-29-oic acid*Aerial root[46]
3β-Acetoxy-25-methoxylanosta-8,23-dieneAerial root[45]
3β-Acetoxy-19α-methoxy-20-taraxastene*Aerial root[47]
3β-Acetoxy-22α-methoxy-20-taraxastene*Aerial root[47]
3β-Acetoxy-α-methoxy-12-ursene*Aerial root[48]
3β-Acetoxy-19(29)-taraxasten-20α-ol*Aerial root[45]
3β-Acetoxy-20-taraxasten-22α-ol*Aerial root[47]
3β-Acetoxy-20-taraxasten-22-oneAerial root[51]
3β-Acetoxy-12-oleanen-11-oneAerial root[46]
3β-Acetoxy-20-taraxasten-22-oneAerial root[51]
3β-Acetoxyolean-12-en-11α-olAerial root[50]
Acetylbetulinic acidAerial root[45]
Acetylursolic acidAerial root[45]
β-Amyrin acetateBark[31]
Betulinic acidBark[31]
Betulonic acidAerial root[45]
3β,11α-Diacetoxy-12-urseneAerial root[48]
29,30-Dinor-3β-acetoxy-18,19-dioxo-18,19-secolupane*Aerial root[50]
3,22-Dioxo-20-taraxastene*Aerial root[45]
20α,21α-Epoxytaraxastan-3β-ol*Aerial root[51]
FriedelinLeaf, Bark[31,52]
3β-Hydroxy-20-oxo-29(20→19)abeolupane*Aerial root[51]
(22E)-2S,26,27-trinor-β-Hydroxycycloart-22-en-al*Aerial root[49]
3β-Hydroxy-11α-hydroperoxy-12-ursene*Aerial root[48]
27-nor-3β-Hydroxy-25-oxocycloartane*Aerial root[49]
(23E)-27-nor-3β-Hydroxycycloart-23-en-25-oneAerial root[49]
LupeolBark, aerial root[31,50]
Lupeol acetateAerial root[50]
Lupenyl acetateLeaf[52]
Oleanolic acidLeaf, bark, aerial root[25,41,52]
Oleanonic acidAerial root[45]
3-Oxofriedelan-28-oic acidAerial root[45]
22-Oxo-20-taraxasten -3β-ol*Aerial root[51]
Plectranthoic acidAerial root[27]
PtiloepoxideAerial root[51]
20-Taraxasten-3β-ol*Aerial root[51]
20(30)-Taraxastene-3β, 21α-diol*Aerial root[51]
20-Taraxastene-3β,22α-diol*Aerial root[46,51]
Ursolic acidBark, aerial root[31,45]
Ursonic acidAerial root[45]

[i] Compounds with an asterisk are novel to F. microcarpa


In a review on Ficus species with anti-diabetic properties, F. microcarpa was among the six species identified.58 The other five species were F. bengalensis, F. carica, F. hispida, F. racemosa and F. religiosa. The hypoglycaemic activity of the ethanol leaf extract of F. microcarpa in alloxan-induced diabetic rats has been reported.59 Administration of 200 mg/kg of the extract reduced the blood glucose level to 102 mg/dL compared to 267 mg/dL of the diabetic control after two weeks. Decrease in TBARS, and increase in GPx, SOD and CAT levels demonstrated the antioxidant properties of the extract. Evidence for its hypoglycaemic activity was shown by the increase in HDL, and decrease in triglycerides, total cholesterol, LDL and VLDL. Similar results were also obtained with the methanol leaf extract of F. microcarpa in alloxan-induced diabetic rats.60 At 100, 200 and 400 mg/kg, the extract reduced the blood glucose level by 33%, 53% and 54% after three weeks. The extract also reduced serum aspartate transferase, triglycerides, cholesterol and urea levels in the serum, and increased the insulin level in the blood. Besides being a potent activator of AMPK with therapeutic potential against prostate cancer, plectranthoic acid also displayed anti-hyperglycemic effects by inhibiting amylase, glucosidase and dipeptidyl peptidase-4 (DPP-4) activities suggesting its possible role in the treatment of type-2 diabetes.27


The anti-diarrheal activity of the leaf extract of F. microcarpa has been determined by castor oil induced diarrhoea in rats.61 The extract administered orally at doses of 300 and 600 mg/kg, produced a marked anti-diarrheal effect in rats. At 300 mg/kg, the percentage of inhibition based on the number and weight of faeces was 79% and 66%, and both 32% at 600 mg/kg. There was also reduction in anti-enteropooling activity based on the volume and weight of intestinal content. Compared to the castor oil control, the reduction was 53% and 31% at 300 mg/kg, and 46% and 32% at 600 mg/kg, respectively.

Figure 3:

Lupane-type (top row), oleanane-type (bottom left) and ursane-type (bottom right) of triterpenoids of Ficus microcarpa. 04-g003.jpg

Other properties

Other properties of F. microcarpa include anti-inflammatory,62 anti-asthmatic,63 hypolipidemic64 and hepatoprotective65,66 activities.


Like most Ficus species, F. microcarpa has multiple uses, both medicinal and non-medicinal. A sacred plant with spiritual significance, the species is an important food sources for birds and mammals, and a popular shade and ornamental plant. It is used as traditional folk medicine to treat various diseases and disorders. Its phytochemistry, notably that of the aerial roots, is well studied with a wide array of triterpenoids, phenylpropanoids, flavonoids and phenolic acids isolated. Pharmacological properties of F. microcarpa include antioxidant, antibacterial, anticancer, anti-diabetic, anti-diarrhoeal, anti-inflammatory, anti-asthmatic, hepatoprotective and hypolipidemic activities. Future directions will entail studies on its pharmacology using animal models and isolated bioactive compounds.


The authors are grateful to Dauni Seligi, Jamiss Aribin and Fabian Koret, field staff from the Sabah Forestry Department (SFD) in Sandakan who have been monitoring and photographing the flowering and fruiting of F. microcarpa when they go out on their field trips.

Figure 4:

Molecular structure of plectranthoic acid. 04-g004.jpg


[2] Conflicts of interest CONFLICT OF INTEREST

No conflict of interest to declare.



2,2’-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid)


5’AMP activated kinase




dipeptidyl peptidase-4




median effective concentration


glutathione peroxidase


high-density lipoprotein


median inhibitory concentration


low-density lipoprotein


superoxide dismutase


thiobarbituric acid reactive substances


very low-density lipoprotein



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  • Ficus microcarpa has multiple medicinal and non-medicinal uses.

  • A sacred plant with spiritual significance, the species is an important food sources for birds and mammals, and a popular shade and ornamental plant.

  • It is used as traditional folk medicine to treat various diseases and disorders.

  • Its phytochemistry is well studied with a wide array of triterpenoids, phenylpropanoids, flavonoids and phenolic acids isolated.

  • Pharmacological properties include antioxidant, antibacterial, anticancer, anti-diabetic, anti-diarrhoeal, anti-inflammatory, anti-asthmatic, hepatoprotective and hypolipidemic activities.

  • Future directions will entail pharmacological studies using animal models and isolated bioactive compounds.


Dr Eric W.C. Chan (Lead and Corresponding Author) is Associate Professor of Chemistry, Faculty of Applied Sciences, UCSI University in Cheras, Kuala Lumpur, Malaysia.

Dr Joseph Tangah is Senior Research Officer at the Forest Research Centre of the Sabah Forestry Department in Sandakan, Sabah, Malaysia.

Dr Tomomi Inoue is Senior Researcher Officer at the Centre for Environmental Biology and Ecosystem Studies, National Institute for Environmental Studies, Onogawa, Tsukuba, Japan.

Dr Mami Kainuma, Karin Baba, Nozomi Oshiro, Mio Kezuka and Norimi Kimura are Researchers at the Secretariat of the International Society for Mangrove Ecosystems, c/o Faculty of Agriculture, University of the Ryukyus, Okinawa, Japan.