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Published in: BMC Complementary Medicine and Therapies 1/2015

Open Access 01-12-2015 | Research article

Phytochemical constituents and biological activities of different extracts of Strobilanthes crispus (L.) Bremek leaves grown in different locations of Malaysia

Authors: Ali Ghasemzadeh, Hawa ZE Jaafar, Asmah Rahmat

Published in: BMC Complementary Medicine and Therapies | Issue 1/2015

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Abstract

Background

Strobilanthes crispus is a well-known herb in Malaysia with various pharmaceutical properties. S. crispus is known to contain several biologically active chemical constituents which are responsible for its pharmaceutical quality.

Methods

Strobilanthes crispus leaves grown in three different locations in Malaysia [Kelantan (North-east), Selangor (Central), and Penang (North)], were investigated for differences in the content of secondary metabolites [total phenolics content (TPC), total flavonoids content (TFC), and total saponins content (TSC)] as well as for their antioxidant and anticancer properties. Phenolic acids and flavonoids were identified using ultra-high performance liquid chromatography (UHPLC). Ferric reducing antioxidant potential (FRAP) and 1,1-diphenyl-2-picrylhydrazyl (DPPH) assays were used to evaluate the antioxidant activities. The anticancer activity of extracts against HeLa cancer cell line was evaluated using the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay.

Results

Samples from the three different locations when extracted with two solvents (aqueous and ethanol extracts) yielded significantly different results for TPC, TFC, and TSC as well as for antioxidant activity. Aqueous extract of S. crispus leaves collected from Kelantan exhibited the highest values: TPC [12.62 mg gallic acid equivalents (GAE)/g dry matter (DM)], TFC (7.44 mg quercetin equivalents (QE)/g DM), TSC (44.7 mg diosgenin equivalents (DE)/g DM), DPPH (73.8 %), and FRAP (267.5 μM of Fe (II)/g) activity with a half-maximal inhibitory concentration (IC50) of 44.1 μg/mL compared to the extracts of leaves collected from the other two locations. The most important secondary metabolites identified in this study, based on concentration, were phenolics classified as followed: caffeic acid>ferulic acid>gallic acid>chlorogenic acid>trans-cinnamic acid; flavonoids: quercetin>rutin>catechin>apigenin>naringenin>kaempferol. Extracts of leaves collected from Kelantan exhibited better anticancer activity against HeLa cancer cell line with an IC50 of 182.5 μg/mL compared to the extracts of leaves from Selangor (IC50 = 266.4 μg/mL) and Penang (IC50 = 331.5 μg/mL) and to tamoxifen (IC50 = 63.4 μg/mL). S. crispus leaves with the highest content of secondary metabolites exhibited the most potent antioxidant and anticancer activity.

Conclusions

Therefore, based on the potent antioxidant and anticancer activity of leaves extracts, it appears that S. crispus grown in the North-east of Malaysia (Kelantan) is a potential source of anticarcinogenic therapeutic compounds.
Literature
1.
go back to reference Boyer J, Liu RH. Apple phytochemicals and their health benefits. Nutr J. 2004;3(5):12. Boyer J, Liu RH. Apple phytochemicals and their health benefits. Nutr J. 2004;3(5):12.
2.
go back to reference World Health Organization. WHO traditional medicine strategy 2002–2005. 2002. World Health Organization. WHO traditional medicine strategy 2002–2005. 2002.
3.
go back to reference Menant M. Medicinal plants of east and south east Asia. Cambridge, UK: MIT Press; 1980. Menant M. Medicinal plants of east and south east Asia. Cambridge, UK: MIT Press; 1980.
4.
go back to reference Norfarizan-Hanoon N, Asmah R, Rokiah M, Fauziah O, Faridah H. Antihyperglycemic, hypolipidemic and antioxidant enzymes effect of Strobilanthes crispus juice in normal and streptozotocin-induced diabetic male and female rats. Int J Pharmacol. 2009;5(3):200–7.CrossRef Norfarizan-Hanoon N, Asmah R, Rokiah M, Fauziah O, Faridah H. Antihyperglycemic, hypolipidemic and antioxidant enzymes effect of Strobilanthes crispus juice in normal and streptozotocin-induced diabetic male and female rats. Int J Pharmacol. 2009;5(3):200–7.CrossRef
5.
go back to reference Fadzelly AM, Asmah R, Fauziah O. Effects of Strobilanthes crispus tea aqueous extracts on glucose and lipid profile in normal and streptozotocin-induced hyperglycemic rats. Plant Foods Hum Nutr. 2006;61(1):6–11.CrossRef Fadzelly AM, Asmah R, Fauziah O. Effects of Strobilanthes crispus tea aqueous extracts on glucose and lipid profile in normal and streptozotocin-induced hyperglycemic rats. Plant Foods Hum Nutr. 2006;61(1):6–11.CrossRef
6.
go back to reference Ismail M, Manickam E, Danial AM, Rahmat A, Yahaya A. Chemical composition and antioxidant activity of Strobilanthes crispus leaf extract. J Nutr Biochem. 2000;11(11):536–42.CrossRefPubMed Ismail M, Manickam E, Danial AM, Rahmat A, Yahaya A. Chemical composition and antioxidant activity of Strobilanthes crispus leaf extract. J Nutr Biochem. 2000;11(11):536–42.CrossRefPubMed
7.
go back to reference Qader SW, Abdulla MA, Chua LS, Najim N, Zain MM, Hamdan S. Antioxidant, total phenolic content and cytotoxicity evaluation of selected Malaysian plants. Molecules. 2011;16(4):3433–43.CrossRefPubMed Qader SW, Abdulla MA, Chua LS, Najim N, Zain MM, Hamdan S. Antioxidant, total phenolic content and cytotoxicity evaluation of selected Malaysian plants. Molecules. 2011;16(4):3433–43.CrossRefPubMed
8.
go back to reference Muslim N, Ng K, Itam A, Nassar Z, Ismail Z, Majid A. Evaluation of cytotoxic, anti-angiogenic and antioxidant properties of standardized extracts of Strobilanthes crispus leaves. Int J Pharmacol. 2010;6(5):591–9.CrossRef Muslim N, Ng K, Itam A, Nassar Z, Ismail Z, Majid A. Evaluation of cytotoxic, anti-angiogenic and antioxidant properties of standardized extracts of Strobilanthes crispus leaves. Int J Pharmacol. 2010;6(5):591–9.CrossRef
9.
go back to reference Al-Henhena N, Mahmood A, Al-Magrami A, Nor Syuhada A, Zahra A, Summaya M, et al. Histological study of wound healing potential by ethanol leaf extract of Strobilanthes crispus in rats. J Med Plants Res. 2011;5(16):3666–9. Al-Henhena N, Mahmood A, Al-Magrami A, Nor Syuhada A, Zahra A, Summaya M, et al. Histological study of wound healing potential by ethanol leaf extract of Strobilanthes crispus in rats. J Med Plants Res. 2011;5(16):3666–9.
10.
go back to reference Black PH, Garbutt LD. Stress, inflammation and cardiovascular disease. J Psychosom Res. 2002;52(1):1–23.CrossRefPubMed Black PH, Garbutt LD. Stress, inflammation and cardiovascular disease. J Psychosom Res. 2002;52(1):1–23.CrossRefPubMed
11.
go back to reference Fimognari C, Berti F, Nüsse M, Cantelli Forti G, Hrelia P. In vitro antitumor activity of cyanidin-3-O-β-glucopyranoside. Chemotherapy. 2005;51(6):332–5.CrossRefPubMed Fimognari C, Berti F, Nüsse M, Cantelli Forti G, Hrelia P. In vitro antitumor activity of cyanidin-3-O-β-glucopyranoside. Chemotherapy. 2005;51(6):332–5.CrossRefPubMed
12.
go back to reference Fresco P, Borges F, Diniz C, Marques M. New insights on the anticancer properties of dietary polyphenols. Med Res Rev. 2006;26(6):19.CrossRef Fresco P, Borges F, Diniz C, Marques M. New insights on the anticancer properties of dietary polyphenols. Med Res Rev. 2006;26(6):19.CrossRef
13.
go back to reference Zhang Y, Seeram NP, Lee R, Feng L, Heber D. Isolation and identification of strawberry phenolics with antioxidant and human cancer cell antiproliferative properties. J Agric Food Chem. 2008;56(3):670–5.CrossRefPubMed Zhang Y, Seeram NP, Lee R, Feng L, Heber D. Isolation and identification of strawberry phenolics with antioxidant and human cancer cell antiproliferative properties. J Agric Food Chem. 2008;56(3):670–5.CrossRefPubMed
14.
go back to reference Damianaki A, Bakogeorgou E, Kampa M, Notas G, Hatzoglou A, Panagiotou S, et al. Potent inhibitory action of red wine polyphenols on human breast cancer cells. J Cell Biochem. 2000;78(3):429–41.CrossRefPubMed Damianaki A, Bakogeorgou E, Kampa M, Notas G, Hatzoglou A, Panagiotou S, et al. Potent inhibitory action of red wine polyphenols on human breast cancer cells. J Cell Biochem. 2000;78(3):429–41.CrossRefPubMed
15.
go back to reference Nurraihana H, Norfarizan-Hanoon N. Phytochemistry, pharmacology and toxicology properties of Strobilanthes crispus. Int Food Res J. 2013;20(5):2045–56. Nurraihana H, Norfarizan-Hanoon N. Phytochemistry, pharmacology and toxicology properties of Strobilanthes crispus. Int Food Res J. 2013;20(5):2045–56.
16.
go back to reference Liza M, Rahman RA, Mandana B, Jinap S, Rahmat A, Zaidul I, et al. Supercritical carbon dioxide extraction of bioactive flavonoid from Strobilanthes crispus (Pecah Kaca). Food Bioprod Process. 2010;88(2):319–26.CrossRef Liza M, Rahman RA, Mandana B, Jinap S, Rahmat A, Zaidul I, et al. Supercritical carbon dioxide extraction of bioactive flavonoid from Strobilanthes crispus (Pecah Kaca). Food Bioprod Process. 2010;88(2):319–26.CrossRef
17.
go back to reference Yaniv Z, Dudai N. Medicinal and aromatic plants of the Middle-East, vol. 2: Springer. 2014.CrossRef Yaniv Z, Dudai N. Medicinal and aromatic plants of the Middle-East, vol. 2: Springer. 2014.CrossRef
18.
go back to reference Jayaprakasha G, Patil BS. In vitro evaluation of the antioxidant activities in fruit extracts from citron and blood orange. Food Chem. 2007;101(1):410–8.CrossRef Jayaprakasha G, Patil BS. In vitro evaluation of the antioxidant activities in fruit extracts from citron and blood orange. Food Chem. 2007;101(1):410–8.CrossRef
19.
go back to reference Ghasemzadeh A, Nasiri A, Jaafar HZ, Baghdadi A, Ahmad I. Changes in phytochemical synthesis, chalcone synthase activity and pharmaceutical qualities of Sabah snake grass (Clinacanthus nutans L.) in relation to plant age. Molecules. 2014;19(11):17632–48.CrossRefPubMed Ghasemzadeh A, Nasiri A, Jaafar HZ, Baghdadi A, Ahmad I. Changes in phytochemical synthesis, chalcone synthase activity and pharmaceutical qualities of Sabah snake grass (Clinacanthus nutans L.) in relation to plant age. Molecules. 2014;19(11):17632–48.CrossRefPubMed
20.
go back to reference Singh R, Chidambara Murthy K, Jayaprakasha G. Studies on the antioxidant activity of pomegranate (Punica granatum) peel and seed extracts using in vitro models. J Agric Food Chem. 2002;50(1):81–6.CrossRefPubMed Singh R, Chidambara Murthy K, Jayaprakasha G. Studies on the antioxidant activity of pomegranate (Punica granatum) peel and seed extracts using in vitro models. J Agric Food Chem. 2002;50(1):81–6.CrossRefPubMed
21.
go back to reference Dudonne S, Vitrac X, Coutiere P, Woillez M, Mérillon J-M. Comparative study of antioxidant properties and total phenolic content of 30 plant extracts of industrial interest using DPPH, ABTS, FRAP, SOD, and ORAC assays. J Agric Food Chem. 2009;57(5):1768–74.CrossRefPubMed Dudonne S, Vitrac X, Coutiere P, Woillez M, Mérillon J-M. Comparative study of antioxidant properties and total phenolic content of 30 plant extracts of industrial interest using DPPH, ABTS, FRAP, SOD, and ORAC assays. J Agric Food Chem. 2009;57(5):1768–74.CrossRefPubMed
22.
go back to reference Wojdyło A, Oszmiański J, Czemerys R. Antioxidant activity and phenolic compounds in 32 selected herbs. Food Chem. 2007;105(3):940–9.CrossRef Wojdyło A, Oszmiański J, Czemerys R. Antioxidant activity and phenolic compounds in 32 selected herbs. Food Chem. 2007;105(3):940–9.CrossRef
23.
go back to reference Yoo KM, Lee CH, Lee H, Moon B, Lee CY. Relative antioxidant and cytoprotective activities of common herbs. Food Chem. 2008;106(3):929–36.CrossRef Yoo KM, Lee CH, Lee H, Moon B, Lee CY. Relative antioxidant and cytoprotective activities of common herbs. Food Chem. 2008;106(3):929–36.CrossRef
24.
go back to reference Rao Α, Gurfinkel D. The bioactivity of saponins: triterpenoid and steroidal glycosides. Drug Metabol Drug Interact. 2000;17(1–4):211–36.PubMed Rao Α, Gurfinkel D. The bioactivity of saponins: triterpenoid and steroidal glycosides. Drug Metabol Drug Interact. 2000;17(1–4):211–36.PubMed
26.
go back to reference Karimi E, Jaafar HZ, Ahmad S. Phytochemical analysis and antimicrobial activities of methanolic extracts of leaf, stem and root from different varieties of Labisa pumila Benth. Molecules. 2011;16(6):4438–50.CrossRefPubMed Karimi E, Jaafar HZ, Ahmad S. Phytochemical analysis and antimicrobial activities of methanolic extracts of leaf, stem and root from different varieties of Labisa pumila Benth. Molecules. 2011;16(6):4438–50.CrossRefPubMed
27.
go back to reference Ireland PA, Dziedzic SZ, Kearsley MW. Saponin content of soya and some commercial soya products by means of high‐performance liquid chromatography of the sapogenins. J Sci Food Agric. 1986;37(7):694–8.CrossRef Ireland PA, Dziedzic SZ, Kearsley MW. Saponin content of soya and some commercial soya products by means of high‐performance liquid chromatography of the sapogenins. J Sci Food Agric. 1986;37(7):694–8.CrossRef
28.
go back to reference Heng L, Vincken JP, van Koningsveld G, Legger A, Gruppen H, van Boekel T, et al. Bitterness of saponins and their content in dry peas. J Sci Food Agric. 2006;86(8):1225–31.CrossRef Heng L, Vincken JP, van Koningsveld G, Legger A, Gruppen H, van Boekel T, et al. Bitterness of saponins and their content in dry peas. J Sci Food Agric. 2006;86(8):1225–31.CrossRef
29.
go back to reference Lau A-J, Woo S-O, Koh H-L. Analysis of saponins in raw and steamed Panax notoginseng using high-performance liquid chromatography with diode array detection. J Chromatogr A. 2003;1011(1):77–87.CrossRefPubMed Lau A-J, Woo S-O, Koh H-L. Analysis of saponins in raw and steamed Panax notoginseng using high-performance liquid chromatography with diode array detection. J Chromatogr A. 2003;1011(1):77–87.CrossRefPubMed
30.
go back to reference Bakar MFA, Teh AH, Rahmat A, Hashim N, Othman F, Fakurazi S. Antiproliferative properties and antioxidant activity of various types of Strobilanthes crispus tea. Int J Canc Res. 2006;2(2):152–8.CrossRef Bakar MFA, Teh AH, Rahmat A, Hashim N, Othman F, Fakurazi S. Antiproliferative properties and antioxidant activity of various types of Strobilanthes crispus tea. Int J Canc Res. 2006;2(2):152–8.CrossRef
31.
go back to reference Heim KE, Tagliaferro AR, Bobilya DJ. Flavonoid antioxidants: chemistry, metabolism and structure-activity relationships. J Nutr Biochem. 2002;13(10):572–84.CrossRefPubMed Heim KE, Tagliaferro AR, Bobilya DJ. Flavonoid antioxidants: chemistry, metabolism and structure-activity relationships. J Nutr Biochem. 2002;13(10):572–84.CrossRefPubMed
32.
go back to reference Braca A, Sortino C, Politi M, Morelli I, Mendez J. Antioxidant activity of flavonoids from Licania licaniaeflora. J Ethnopharmacol. 2002;79(3):379–81.CrossRefPubMed Braca A, Sortino C, Politi M, Morelli I, Mendez J. Antioxidant activity of flavonoids from Licania licaniaeflora. J Ethnopharmacol. 2002;79(3):379–81.CrossRefPubMed
33.
go back to reference Lu J, Papp LV, Fang J, Rodriguez-Nieto S, Zhivotovsky B, Holmgren A. Inhibition of mammalian thioredoxin reductase by some flavonoids: implications for myricetin and quercetin anticancer activity. Cancer Res. 2006;66(8):4410–8.CrossRefPubMed Lu J, Papp LV, Fang J, Rodriguez-Nieto S, Zhivotovsky B, Holmgren A. Inhibition of mammalian thioredoxin reductase by some flavonoids: implications for myricetin and quercetin anticancer activity. Cancer Res. 2006;66(8):4410–8.CrossRefPubMed
34.
go back to reference Lee L-T, Huang Y-T, Hwang J-J, Lee P, Ke F-C, Nair MP, et al. Blockade of the epidermal growth factor receptor tyrosine kinase activity by quercetin and luteolin leads to growth inhibition and apoptosis of pancreatic tumor cells. Anticancer Res. 2001;22(3):1615–27. Lee L-T, Huang Y-T, Hwang J-J, Lee P, Ke F-C, Nair MP, et al. Blockade of the epidermal growth factor receptor tyrosine kinase activity by quercetin and luteolin leads to growth inhibition and apoptosis of pancreatic tumor cells. Anticancer Res. 2001;22(3):1615–27.
35.
go back to reference Kessler M, Ubeaud G, Jung L. Anti‐and pro‐oxidant activity of rutin and quercetin derivatives. J Pharm Pharmacol. 2003;55(1):131–42.CrossRefPubMed Kessler M, Ubeaud G, Jung L. Anti‐and pro‐oxidant activity of rutin and quercetin derivatives. J Pharm Pharmacol. 2003;55(1):131–42.CrossRefPubMed
36.
go back to reference Isemura M, Saeki K, Kimura T, Hayakawa S, Minami T, Sazuka M. Tea catechins and related polyphenols as anti‐cancer agents. Biofactors. 2000;13(1‐4):81–5.CrossRefPubMed Isemura M, Saeki K, Kimura T, Hayakawa S, Minami T, Sazuka M. Tea catechins and related polyphenols as anti‐cancer agents. Biofactors. 2000;13(1‐4):81–5.CrossRefPubMed
37.
go back to reference Danila A-M, Kotani A, Hakamata H, Kusu F. Determination of rutin, catechin, epicatechin, and epicatechin gallate in buckwheat (Fagopyrum esculentum Moench) by micro-high-performance liquid chromatography with electrochemical detection. J Agric Food Chem. 2007;55(4):1139–43.CrossRefPubMed Danila A-M, Kotani A, Hakamata H, Kusu F. Determination of rutin, catechin, epicatechin, and epicatechin gallate in buckwheat (Fagopyrum esculentum Moench) by micro-high-performance liquid chromatography with electrochemical detection. J Agric Food Chem. 2007;55(4):1139–43.CrossRefPubMed
38.
go back to reference Ghasemzadeh A, Jaafar HZ. Profiling of phenolic compounds and their antioxidant and anticancer activities in pandan (Pandanus amaryllifolius Roxb.) extracts from different locations of Malaysia. BMC Compl Alternative Med. 2013;13(1):341.CrossRef Ghasemzadeh A, Jaafar HZ. Profiling of phenolic compounds and their antioxidant and anticancer activities in pandan (Pandanus amaryllifolius Roxb.) extracts from different locations of Malaysia. BMC Compl Alternative Med. 2013;13(1):341.CrossRef
39.
go back to reference Ghasemzadeh A, Jaafar HZ, Rahmat A, Devarajan T. Evaluation of bioactive compounds, pharmaceutical quality, and anticancer activity of curry leaf (Murraya koenigii L.). Evid base Compl Alternative Med. 2014, 2014;1-8. Ghasemzadeh A, Jaafar HZ, Rahmat A, Devarajan T. Evaluation of bioactive compounds, pharmaceutical quality, and anticancer activity of curry leaf (Murraya koenigii L.). Evid base Compl Alternative Med. 2014, 2014;1-8.
40.
go back to reference Jaakola L, Hohtola A. Effect of latitude on flavonoid biosynthesis in plants. Plant Cell Environ. 2010;33(8):1239–47.PubMed Jaakola L, Hohtola A. Effect of latitude on flavonoid biosynthesis in plants. Plant Cell Environ. 2010;33(8):1239–47.PubMed
41.
go back to reference Bourgaud F, Gravot A, Milesi S, Gontier E. Production of plant secondary metabolites: a historical perspective. Plant Sci. 2001;161(5):839–51.CrossRef Bourgaud F, Gravot A, Milesi S, Gontier E. Production of plant secondary metabolites: a historical perspective. Plant Sci. 2001;161(5):839–51.CrossRef
42.
go back to reference Mori K, Sugaya S, Gemma H. Decreased anthocyanin biosynthesis in grape berries grown under elevated night temperature condition. Sci Hortic. 2005;105(3):319–30.CrossRef Mori K, Sugaya S, Gemma H. Decreased anthocyanin biosynthesis in grape berries grown under elevated night temperature condition. Sci Hortic. 2005;105(3):319–30.CrossRef
43.
go back to reference Hahlbrock K, Wellmann E. Light-induced flavone biosynthesis and activity of phenylalanine ammonia-lyase and UDP-apiose synthetase in cell suspension cultures of Petroselinum hortense. Planta. 1970;94(3):236–9.CrossRefPubMed Hahlbrock K, Wellmann E. Light-induced flavone biosynthesis and activity of phenylalanine ammonia-lyase and UDP-apiose synthetase in cell suspension cultures of Petroselinum hortense. Planta. 1970;94(3):236–9.CrossRefPubMed
44.
go back to reference Wang SY, Chen C-T, Wang CY. The influence of light and maturity on fruit quality and flavonoid content of red raspberries. Food Chem. 2009;112(3):676–84.CrossRef Wang SY, Chen C-T, Wang CY. The influence of light and maturity on fruit quality and flavonoid content of red raspberries. Food Chem. 2009;112(3):676–84.CrossRef
45.
go back to reference Liu C-Z, Guo C, Wang Y-C, Ouyang F. Effect of light irradiation on hairy root growth and artemisinin biosynthesis of Artemisia annua L. Process Biochem. 2002;38(4):581–5.CrossRef Liu C-Z, Guo C, Wang Y-C, Ouyang F. Effect of light irradiation on hairy root growth and artemisinin biosynthesis of Artemisia annua L. Process Biochem. 2002;38(4):581–5.CrossRef
46.
go back to reference Ghasemzadeh A, Jaafar HZ, Rahmat A, Wahab PEM, Halim MRA. Effect of different light intensities on total phenolics and flavonoids synthesis and anti-oxidant activities in young ginger varieties (Zingiber officinale Roscoe). Int J Mol Sci. 2010;11(10):3885–97.CrossRefPubMedPubMedCentral Ghasemzadeh A, Jaafar HZ, Rahmat A, Wahab PEM, Halim MRA. Effect of different light intensities on total phenolics and flavonoids synthesis and anti-oxidant activities in young ginger varieties (Zingiber officinale Roscoe). Int J Mol Sci. 2010;11(10):3885–97.CrossRefPubMedPubMedCentral
47.
go back to reference Karimi E, Jaafar HZ, Ghasemzadeh A, Ibrahim MH. Light intensity effects on production and antioxidant activity of flavonoids and phenolic compounds in leaves, stems and roots of three varieties of Labisia pumila Benth. Aust J Crop Sci. 2013;7(7):1016–23. Karimi E, Jaafar HZ, Ghasemzadeh A, Ibrahim MH. Light intensity effects on production and antioxidant activity of flavonoids and phenolic compounds in leaves, stems and roots of three varieties of Labisia pumila Benth. Aust J Crop Sci. 2013;7(7):1016–23.
48.
go back to reference Matsuki M. Regulation of plant phenolic synthesis: from biochemistry to ecology and evolution. Aust J Bot. 1996;44(6):613–34.CrossRef Matsuki M. Regulation of plant phenolic synthesis: from biochemistry to ecology and evolution. Aust J Bot. 1996;44(6):613–34.CrossRef
49.
go back to reference Jaakola L, Määttä-Riihinen K, Kärenlampi S, Hohtola A. Activation of flavonoid biosynthesis by solar radiation in bilberry (Vaccinium myrtillus L.) leaves. Planta. 2004;218(5):721–8.CrossRefPubMed Jaakola L, Määttä-Riihinen K, Kärenlampi S, Hohtola A. Activation of flavonoid biosynthesis by solar radiation in bilberry (Vaccinium myrtillus L.) leaves. Planta. 2004;218(5):721–8.CrossRefPubMed
50.
go back to reference Toor R, Savage G, Lister C. Seasonal variations in the antioxidant composition of greenhouse grown tomatoes. J Food Compos Anal. 2006;19(1):1–10.CrossRef Toor R, Savage G, Lister C. Seasonal variations in the antioxidant composition of greenhouse grown tomatoes. J Food Compos Anal. 2006;19(1):1–10.CrossRef
51.
go back to reference Hanisa H, Mohdazmi M, Suhaila M, Hakim M: Effects of centella asiatica L., curcuma longa L., and strobilanthes crispus L. extracts on 3 kidney cell lines: in vitro cytotoxicity analysis Int J Pharm Pharmaceut Sci. 2014;6:388-392. Hanisa H, Mohdazmi M, Suhaila M, Hakim M: Effects of centella asiatica L., curcuma longa L., and strobilanthes crispus L. extracts on 3 kidney cell lines: in vitro cytotoxicity analysis Int J Pharm Pharmaceut Sci. 2014;6:388-392.
52.
go back to reference Chong HZ, Rahmat A, Yeap SK, Akim AM, Alitheen NB, Othman F, et al. In vitro cytotoxicity of Strobilanthes crispus ethanol extract on hormone dependent human breast adenocarcinoma MCF-7 cell. BMC Compl Alternative Med. 2012;12(1):35. Chong HZ, Rahmat A, Yeap SK, Akim AM, Alitheen NB, Othman F, et al. In vitro cytotoxicity of Strobilanthes crispus ethanol extract on hormone dependent human breast adenocarcinoma MCF-7 cell. BMC Compl Alternative Med. 2012;12(1):35.
53.
go back to reference Cheng CL. Pharmacological evaluation of strobilanthes crispus (L.) Blume. Singapore: National University of Singapore; 2008. Cheng CL. Pharmacological evaluation of strobilanthes crispus (L.) Blume. Singapore: National University of Singapore; 2008.
54.
go back to reference Chong YH, Koh RY, Ling APK, Chye SM, Yew MY. Strobilanthes crispus extract induces apoptosis through enhanced caspases activities in cervical cancer cells. In: International Conference on Biological, Environment and Food Engineering (BEFE-2014) August 4-5, 2014; Bali, Indonesia. 2014. p. 42–6. Chong YH, Koh RY, Ling APK, Chye SM, Yew MY. Strobilanthes crispus extract induces apoptosis through enhanced caspases activities in cervical cancer cells. In: International Conference on Biological, Environment and Food Engineering (BEFE-2014) August 4-5, 2014; Bali, Indonesia. 2014. p. 42–6.
55.
go back to reference Liu RH. Health benefits of fruit and vegetables are from additive and synergistic combinations of phytochemicals. Am J Clin Nutr. 2003;78(3):517S–20S.PubMed Liu RH. Health benefits of fruit and vegetables are from additive and synergistic combinations of phytochemicals. Am J Clin Nutr. 2003;78(3):517S–20S.PubMed
Metadata
Title
Phytochemical constituents and biological activities of different extracts of Strobilanthes crispus (L.) Bremek leaves grown in different locations of Malaysia
Authors
Ali Ghasemzadeh
Hawa ZE Jaafar
Asmah Rahmat
Publication date
01-12-2015
Publisher
BioMed Central
Published in
BMC Complementary Medicine and Therapies / Issue 1/2015
Electronic ISSN: 2662-7671
DOI
https://doi.org/10.1186/s12906-015-0873-3

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