PUBLISHED WORK
The Fruits of My Labor
BOTANICAL ADULTERANTS PREVENTION PROGRAM DOCUMENTS:
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Orhan N. Adulteration of Bacopa (Bacopa monnieri). Botanical Adulterants Prevention Bulletin. Austin, TX: ABC-AHP-NCNPR Botanical Adulterants Prevention Program, April 2025. doi:10.59520/bapp.bapb/uFYe7739
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Orhan N. Adulteration of nigella (Nigella sativa) seed and seed oil. Botanical Adulterants Prevention Bulletin. Austin, TX: ABC-AHP-NCNPR Botanical Adulterants Prevention Program, October 2022. https://doi.org/10.59520/bapp.bapb/vpnm5432
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Orhan N, Temiz B, Ağalar HG, İşcan G. Boswellia serrata oleogum resins and extracts laboratory guidance document. Austin, TX: ABC-AHP-NCNPR Botanical Adulterants Prevention Program. August 2022. https://doi.org/10.59520/bapp.lgd/mqgn3574
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Orhan N. St. John's wort (Hypericum perforatum) laboratory guidance document. Austin, TX: ABC-AHP-NCNPR Botanical Adulterants Prevention Program, December 2021. https://doi.org/10.59520/bapp.lgd/awbq3781
RESEARCH ARTICLES
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Estimating the extent of adulteration of the popular herbs black cohosh, echinacea, elder berry, ginkgo, and turmeric – its challenges and limitations. Nat Prod Reports, 41, 1604-1621, 2024. https://doi.org/10.1039/D4NP00014E
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Standardization of Juniperus macrocarpa Sibt. & Sm. and Juniperus excelsa M. Bieb. extracts with carbohydrate digestive enzyme inhibitory and antioxidant activities. Iranian J Pharm Res, 20(3), 2021. https://doi.org/10.22037/ijpr.2021.114838.15055
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In-vitro enzyme inhibitory properties, antioxidant activities and phytochemical profiles of Moltkia aurea and Moltkia coerulea. Turk J Pharm Sci, 18(2), 204-212, 2021. https://doi.org/10.4274/tjps.galenos.2020.12258
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Phenolic content, antioxidant and in-vitro antidiabetic effects of thirteen marine organisms from the Mediterranean Sea. Farmacia, 69 (1), 2021. http://doi.org/10.31925/farmacia.2021.1.9
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A Comparative evaluation of Juniperus species with antimicrobial magistrals. Pakistan J Pharm Sci, 33 (4), 1443-1449, 2020. http://doi.org/10.36721/pjps.2020.33.4.reg.1443-1449
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Evaluation of enzyme inhibitory and antioxidant activity of some Lamiaceae plants. J Res Pharm, 23(4), 749-758, 2019. https://doi.org/10.12991/jrp.2019.184
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In vitro antidiabetic effect, quantitative studies and UPLC-TOF-MS analysis of black tea samples from Turkish market. J Res Pharm, 23(3), 484-497, 2019. https://doi.org/10.12991/jrp.2019.155
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In vitro enzyme inhibitory properties, antioxidant activities, and phytochemical studies on Juniperus drupacea. J Res Pharm, 23(1), 83-92, 2019. http://doi.org/10.12991/jrp.2018.112
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In vitro and in vivo antioxidant and antidiabetic activity studies on standardized extracts of two Bidens species. J Food Biochem, 41(6), (e12429), 2017. https://doi.org/10.1111/jfbc.12429
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Antioxidant potential and carbohydrate digestive enzyme inhibitory effects of five Inula species and their major compounds. S Afr J Bot, 111, 86-92, 2017. https://doi.org/10.1016/j.sajb.2017.03.040
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Comparative analysis of chemical profile, antioxidant, in-vitro and in-vivo antidiabetic activities of Juniperus foetidissima Willd. and Juniperus sabina L. IJPR, 16, 64-74, 2017. https://doi.org/10.22037/ijpr.2017.1962
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Phenolic compounds characterization, carbohydrate digestive enzyme inhibitory and antioxidant activities of Hieracium pannosum Boiss., S Afr J Bot, 108, 387-392, 2017. https://doi.org/10.1016/j.sajb.2016.08.021
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Anti-hyperglycaemic & antioxidant effects of Bidens tripartita and quantitative analysis on its active principles, IJBMS, 19, 1114-1124, 2016. https://doi.org/10.22038/ijbms.2016.7737
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Assessment of in-vitro antidiabetic and antioxidant effects of Helianthus tuberosus, Cydonia oblonga and Allium porrum. Turk J Pharm Sci, 13, 181-188, 2016. https://doi.org/10.5505/tjps.2016.47966
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Successful treatment of sodium oxalate induced urolithiasis with Helichrysum flowers, J Ethnopharmacol, 186, 322-328, 2016. https://doi.org/10.1016/j.jep.2016.04.003
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Subacute effects of standardized Fumaria vaillantii Lois. ethanol extract on trace element levels, biochemical and histopathological parameters in experimental liver toxicity. J Food Biochem, 40, 180-189, 2016. https://doi.org/10.1111/jfbc.12208
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Hypoglycaemic effect of seed and fruit extracts of laurel cherry in different experimental models and chemical characterization of the seed extract. Rec Nat Prod, 9, 379-385, 2015. https://www.acgpubs.org/doc/2018080720433548-RNP-1208-123.pdf
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Preventive treatment of calcium oxalate crystal deposition with immortal flowers. J Ethnopharmacol, 163, 60-67, 2015. https://doi.org/10.1016/j.jep.2015.01.009
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Ankara aktarlarında nane adıyla satılan örnekler üzerinde çalışmalar (Studies on the samples sold as mint in aktars of Ankara). Spatula DD, 4, 223-231, 2014. https://doi.org/10.5455/spatula.20141113043222
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Effect of exotic fruit “pepino” (Solanum muricatum Aiton.) on blood glucose level. Turk J Pharm Sci, 11,195-202, 2014. https://www.turkjps.org/pdf/68f48462-babf-415b-b878-1e392d1c83af/articles/12353/195-202.pdf
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Enzyme inhibitory and radical scavenging effects of some antidiabetic plants of Turkey. IJBMS, 17(6), 426-432, 2014. https://doi.org/10.22038/ijbms.2014.2927
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In-vivo and in-vitro antidiabetic effect of Cistus laurifolius L. and detection of major phenolic compounds by UPLC-TOF-MS analysis, J Ethnopharmacol, 146, 859-865, 2013. https://doi.org/10.1016/j.jep.2013.02.016
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Morphologic, anatomical, and chromatographic studies on Eucalyptus (L’Hér.) samples from the market. FABAD J Pharm Sci, 37, 79-87, 2012. http://dergi.fabad.org.tr/pdf/volum37/issue2/79-87.pdf
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Evaluation of anti-inflammatory and antinociceptive effects of some Juniperus species growing in Turkey, Turk J Biol, 36, 719-726, 2012. https://doi.org/10.3906/biy-1203-32
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UPLC-TOF-MS analysis of Galium spurium towards its neuroprotective and anticonvulsant activities, J Ethnopharmacol, 141, 220-227, 2012. https://doi.org/10.1016/j.jep.2012.01.056
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A bioactivity guided study on the antidiabetic activity of Juniperus oxycedrus subsp. oxycedrus leaves, J Ethnopharmacol, 140, 409-415, 2012. https://doi.org/10.1016/j.jep.2012.01.042
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Identification of hypoglycaemic compounds from berries of Juniperus oxycedrus ssp. oxycedrus through bioactivity guided isolation technique, J Ethnopharmacol, 139, 110-118, 2012. https://doi.org/10.1016/j.jep.2011.10.027
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Studies on the conformity of Hibiscus sabdariffa L. samples from Turkish market to European Pharmacopeia, FABAD J Pharm Sci, 36, 25-32, 2011. http://dergi.fabad.org.tr/pdf/volum36/issue1/25-32.pdf
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Effect of Gentiana olivieri on experimental epilepsy models, Pharmacogn Mag, 28, 344-349, 2011. https://doi.org/10.4103/0973-1296.90419
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Insights into cholinesterase inhibitory and antioxidant activities of five Juniperus species, Food Chem Toxicol, 49, 2305-2312, 2011. https://doi.org/10.1016/j.fct.2011.06.031
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Effects of Juniperus oxycedrus ssp. oxycedrus on tissue lipid peroxidation, trace elements (Cu, Zn, Fe) and blood glucose levels in experimental diabetes, J Ethnopharmacol, 133, 759-764, 2011. https://doi.org/10.1016/j.jep.2010.11.002
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Hypoglycemic activity and antioxidant potential of some medicinal plants traditionally used in Turkey for diabetes, J Ethnopharmacol, 128, 384-389, 2010. https://doi.org/10.1016/j.jep.2010.01.040
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Biological activities of Vitis vinifera L. leaves, Turk J Biol, 33, 341-348, 2009. http://dx.doi.org/10.3906/biy-0806-17
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Antidiabetic effect and antioxidant potential of Rosa canina fruits, Pharmacogn Mag, 20, 309-315, 2009. https://doi.org/10.4103/0973-1296.58151
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A Study of antidiabetic and antioxidant effects of Helichrysum graveolens capitulums in streptozotocin-induced diabetic rats, J Med Food, 10, 396-400, 2007. https://doi.org/10.1089/jmf.2006.293
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Hepatoprotective effect of Vitis vinifera L. leaves on carbon tetrachloride-induced acute liver damage in rats, J Ethnopharmacol, 112, 145-151, 2007. https://doi.org/10.1016/j.jep.2007.02.013
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In-vivo antidiabetic and antioxidant potential of Helichrysum plicatum ssp. plicatum capitulums in streptozotocin-induced diabetic rats, J Ethnopharmacol, 109, 54-59, 2007. https://doi.org/10.1016/j.jep.2006.07.001
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In-vivo assessment of antidiabetic and antioxidant activities of grapevine leaves (Vitis vinifera) in diabetic rats, J Ethnopharmacol, 108, 280-286, 2006. https://doi.org/10.1016/j.jep.2006.05.010
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Antidiabetic and antioxidant effects of Vitis vinifera L. leaves in streptozotocin-diabetic rats. Turk J Pharm, 3, 7-17, 2005. https://doi.org/10.1016/j.jep.2006.05.010
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Evaluation of the hypoglycemic effect and antioxidant activity of three Viscum album subspecies (European mistletoe) in streptozocin-diabetic rats, J Ethnopharmacol, 98, 95-102, 2005. https://doi.org/10.1016/j.jep.2004.12.033
BOOK CHAPTERS
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Translation: Unit 6, Urinary Tract, Rational Phytotherapy (V. Schulz, R. Hansel, M. Blumenthal, V.E. Tyler), Hekimler ve Eczacılar İçin Fitoterapi, Translation Editor: Deliorman Orhan, D., Celcus Kitabevi, 2020.
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Orhan, N. Chapter 30: Juniperus Species: Features, Profile, and Applications to Diabetes, Editors: R. R. Watson, V. R. Preedy. Bioactive Food as Dietary Interventions for Diabetes, Second Edition, Academic Press, USA, 447-460, 2019.
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Orhan, N., Deliorman Orhan, D. Chapter 8: Microbial Control of Vector-Borne Diseases, Editors: B.K. Tyagi, D. Dhanasekaran. Natural Weapons used against Dengue Vector Mosquito, Aedes aegypti. CRC Press, Florida, USA, 137-166, 2018.
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Orhan N. Ribes nigrum (Karagat) (Part 103), Monographs of Society of Pharmacognosy and Phytotherapy, Plants and Their Effects, Akademisyen Bookstore, Ozyurt Press, Ankara, Turkey, 925-934, 2017.
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Orhan N. Eucalyptus globulus (Mavi ökaliptus) (Part 48), Monographs of Society of Pharmacognosy and Phytotherapy, Plants and Their Effects, Akademisyen Bookstore, Ozyurt Press, Ankara, Turkey, 437-446, 2017.
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Orhan D.D., Orhan N. Chapter 25: Novel Antidermatophytic Drug Candidates from Nature, Antimicrobials: Synthetic and Natural Compounds, CRC Press. USA, 487-512, 2015.
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Orhan N. Ribes nigrum (Part 67), Monographs of Society of Pharmacognosy and Phytotherapy, Plants Used in Therapy, Ozyurt Press, Ankara, Turkey, 581-590, 2011.
ACADEMIC CAREER
Career Details
ASSOCIATE PROFESSOR
May 2013-December 2018
Gazi University Faculty of Pharmacy Department of Pharmacognosy
RESEARCH AND TEACHING ASSISTANT
December 2002-May 2013
Gazi University Faculty of Pharmacy Department of Pharmacognosy
PHD THESIS
January 2005 - April 2011
Pharmacognosic studies on Juniperus species that are used as folk medicine against diabetes in Turkey. (Åžeker hastalığına karşı halk ilacı olarak kullanılan Juniperus türleri üzerinde farmakognozik araÅŸtırmalar)
Gazi University Faculty of Pharmacy Department of Pharmacognosy.
MASTER OF SCIENCE THESIS
September 2002Â - December 2004
Researches on the antidiabetic activity of Vitis vinifera L. leaves. (Vitis vinifera L. yapraklarının ÅŸeker hastalığı üzerindeki etkilerinin araÅŸtırılması) Gazi University Faculty of Pharmacy Department of Pharmacognosy
GALLERY
Featured Showcase

With Stefan Gafner and Douglas Siqueira Chaves

With Mark Blumenthal and Eric Brand

With Sophie Fadime Aydogan, Robert Marles, Michael Heinrich, and Sanem Hosbas Coskun

With Nejdet Bozkurt

Isık Mountain, near Ankara

With the Dean of our Faculty, Prof. Dr. Tuncer DeÄŸim

At Ankara University Faculty of Pharmacy Pharmaceutical Botany Lab.

