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    The characterization of phenolic compounds via LC-ESI-MS/MS, antioxidant, enzyme inhibitory activities of Salvia absconditiflora, Salvia sclarea, and Salvia palaestina: A comparative analysis
    (Elsevier, 2022) Onder, Alev; Izgi, Mehmet Necat; Cinar, Ahsen Sevde; Zengin, Gokhan; Yilmaz, Mustafa Abdullah
    Salvia L. genus, one of the medicinal and aromatic plants belonging to the Lamiaceae family, is represented by many endemic species in temperate regions worldwide. The Salvia species have plenty of usages in traditional medicine, important pharmacological effects and economic value. In this context, this study was con-ducted to evaluate the chemical profile and potential bioactivity of ethyl acetate extracts from 3 different Salvia species; Salvia absconditiflora (Salvia cryptantha-an endemic species), S. sclarea and S. palaestina collected from different localities in Anatolia. Total phenolic-flavonoid contents, antioxidant properties and enzyme inhibition experiments were investigated in tested Salvia species. The phenolic profiles were also determined by liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). The analysis revealed the presence of phenolic compounds in ethyl acetate extracts such as cynaroside, rosmarinic acid, cosmosiin, luteolin, apigenin and acacetin. The highest level of phenolic components was detected in S. absconditiflora with 74.16 mg GAE/g. The best radical scavenging and reducing abilities were found in S. absconditiflora (DPPH: 251.39 mg TE/g; ABTS: 340.16 mg TE/g; CUPRAC: 496.20 mg TE/g; FRAP: 322.94 mg TE/g). Moreover, the inhibition of AChE, BChE, and alpha-amylase has also been studied. The most potent AChE inhibitory ability was recorded in S. sclarea (4.00 mg GALAE/g), followed by S. palaestina (3.38 mg GALAE/g) and S. absconditi-flora (3.01 mg GALAE/g). The extracts exhibited similar amylase inhibitory effects. These results reveal that Salvia species [S. absconditiflora (S. cryptantha), S. sclarea and S. palaestina] confirming their potential can be rich sources of promising bioactive compounds as a starting point for further analysis. In addition, it is thought that this study may be the new report for the construction of helpful databases in terms of shedding light on future research and researchers with the valuable information obtained about these economically important Salvia species. (C) 2022 SAAB. Published by Elsevier B.V. All rights reserved.
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    Chemical and biological fingerprints of two Fabaceae species (Cytisopsis dorycniifolia and Ebenus hirsuta): Are they novel sources of natural agents for pharmaceutical and food formulations?
    (Elsevier Science Bv, 2016) Ceylan, Ramazan; Katanic, Jelena; Zengin, Gokhan; Matic, Sanja; Aktumsek, Abdurrahman; Boroja, Tatjana; Stanic, Snezana
    In the present study, the methanolic extracts of Cytisopsis dorycniifolia and Ebenus hirsuta were analyzed for antioxidant, enzyme inhibitory, antimicrobial and antigenotoxic activities. The identification and quantification of phenolic compounds in these extracts were performed using liquid chromatography coupled with mass spectrometry (LC-MS/MS) technique, and the main components were hyperoside, rutin, hesperidin, tannic acid and p-coumaric acid. The extracts had remarkable biological effects. Generally, C. dorycniifolia had higher level of bioactive components and exhibited stronger in vitro antioxidant effects than E. hirsuta. E. hirsuta was active especially against bacteria Pseudomonas fluorescens and Agrobacterium tumefaciens and fungi Puncturella fastigiata, while C dorycniifolia was active against bacteria E. faecalis and had moderate activity against Trichoderma species. The extracts displayed strong antigenotoxic effects (98.6% for E. hirsuta and 76.3% for C dorycniifolia). Our findings suggested that C dorycniifolia and E. hirsuta could be beneficial for the preparation of high-value pharmaceuticals and functional food ingredients. (C) 2016 Elsevier B.V. All rights reserved.
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    Chemical profile, antioxidant and enzyme inhibition activities of natural Saudi sidr and talh honeys
    (Wiley-V C H Verlag Gmbh, 2022) Al Qahtani, Hayfa W. S.; Yagi, Sakina; Yılmaz, Mustafa Abdullah; Çakır, Oğuz; Tarhan, Abbas; Mustafa, Ahmed Ali; Zengin, Gokhan; 0000-0002-4090-7227; 0000-0002-8006-2054; 0000-0001-6548-7823
    Honey is used since ancient time as a food and to cure many diseases. The present study investigated the chemical constituents, antioxidant and enzyme inhibition activities of natural Saudi Sidr (SH) and Talh (TH) honeys. Beside entire honey samples, ethyl acetate, ethanol and water extracts were prepared. The total polyphenolic content of SH, TH and their extracts was in the range of 2.86-7.21 and 3.80-17.33 mg gallic acid equivalents/g, respectively and the total flavonoids content was in the range of 0.05-1.17 and 0.18-2.38 mg rutin equivalents/g, respectively. Out of the 53 standards analyzed by HPLC, 27 compounds were detected with highest number of compounds identified in the ethyl acetate extract of TH (45 %, 24/53) and SH (26 %, 14/53), respectively. Quinic acid was dominant compound identified in all honey samples with the highest content determined in TH ethanol extract (4454 mu g/g). The majority of tested samples possessed considerable anti-radicals and reducing ions capacity with the ethyl acetate extract from TH exerted significantly (p<0.05) the highest activity. All honey samples did not show chelating iron metal property. Honey samples revealed variable enzyme inhibition activity with TH (entire and/or ethyl acetate extract) showed significantly (p<0.05) the highest acetylcholinesterase, butyrylcholinesterase, tyrosinase and alpha-amylase inhibition activity. In conclusion, ethyl acetate is the best solvent for extraction of bioactive molecules from the two honey types. Moreover, the dark-colored TH contained the highest number of molecules and consequently exerted the best antioxidant and enzyme inhibition activities in most assays.
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    Combining in vitro, in vivo and in silico approaches to evaluate nutraceutical potentials and chemical fingerprints of Moltkia aurea and Moltkia coerulea
    (Pergamon-Elsevier Science Ltd, 2017) Zengin, Gokhan; Ceylan, Ramazan; Katanic, Jelena; Mollica, Adriano; Aktumsek, Abdurrahman; Boroja, Tatjana; Matic, Sanja
    Methanolic extracts of Moltkia aurea Boiss. (MA) and Moltkia coerulea (Wild.) Lehm. (MC) were investigated for their antioxidant capacity and enzymatic inhibitory potential against acetylcholinesterase, butyrylcholinesterase, alpha-amylase, alpha-glucosidase, and tyrosinase in vitro. MA and MC were also explored for their antimicrobial effect, as well as for their possible genotoxic/antigenotoxic potential on Drosophila melanogaster in vivo. The total bioactive components (phenolic (TPC) and flavonoid contents (TFC)) were determined and liquid chromatography-tandem mass spectrometry (LC-MS/MS) metabolite profiling of MA and MC appraised. The plausible docking poses of bioactive compounds to key enzymes were further studied using molecular modelling approach. MA proved to be a better antioxidant with higher TPC and TFC compared to MC. Protocatechuic acid, rutin, hesperidin and malic acid were the most abundant in these extracts. Both MA and MC exhibited antigenotoxic potential with a %R in DNA damage of 60.90 and 53.14% respectively. The docking studies revealed that rutin, hesperidin, and rosmarinic acid have the best scores for all the enzymes tested. MA and MC were found to be rich in phytochemicals with potent antioxidant, antimicrobial, and antigenotoxic activities that can be further studied for the management of neurodegenerative complications, diabetes, and hyperpigmentation. (C) 2017 Elsevier Ltd. All rights reserved.
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    Essential Oil Composition of an Uninvestigated Centaurea Species from Turkey: Centaurea patula DC.
    (Taylor & Francis Ltd, 2016) Zengin, Gokhan; Aktumsek, Abdurrahman; Boga, Mehmet; Ceylan, Ramazan; Uysal, Sengul
    Centaurea patula is widely distributed in the Central Anatolia Region of Turkey. The essential oil of C. patula was obtained by hydrodistillation and analyzed by GC-FID and GC-MS techniques. Twenty-one components were identified representing 86.4% of the oil. Spathulenol (14.6%), n-hexadecanoic acid (13.4%), 1-pentadecene (13.1%) and phytol (12.4%) were found to be the major components in this oil. This work is the first report on the chemical composition of the essential oil of C. patula. The results could be valuable for the Centaurea genus in terms of essential oil information's.
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    Functional constituents of six wild edible Silene species: A focus on their phytochemical profiles and bioactive properties
    (Elsevier Science Bv, 2018) Zengin, Gokhan; Mahomoodally, M. Fawzi; Aktumsek, Abdurrahman; Ceylan, Ramazan; Uysal, Sengul; Mocan, Andrei; Yilmaz, Mustafa Abdullah
    Six wild species (S. alba, S. conoidea, S. dichotoma, S. italica, S. supina, and S. vulgaris) from the Silene genera were tested for potential anti-enzymatic (acetyl cholinesterase (AChE), butyryl cholinesterase (BChE), tyrosinase, alpha-amylase, and alpha-glucosidase), antimicrobial (16 microbial strains), and antioxidant activity. An ultra-high performance liquid chromatography-electrospray ionization-tandem mass spectrometry method was used for phytochemical determination. Quinic acid, malic acid, protocatechuic acid, p-coumaric acid, and hesperidin were common in the six Silene species. All extracts showed higher antibacterial effects compared to streptomycin and ampicillin (except S. dichotoma). Antifungal agents, bifonazole (MIC 0.10-0.20 mg/mL and MFC 0.20-0.30 mg/mL) and ketoconazole (MIC 0.15-2.30 mg/mL and MFC 0.20-3.50 mg/mL) showed lower activity than the investigated Silene species extracts. S. alba inhibited AChE (2.00 mg GALAE/g extract) and BChE (1.0 mg GALAE/g extract). The results showed metal chelating potential ranging from 12 to 19 mg EDTAE/g extract, with S. conoidea being the most active, and S. supina the least. S. dichotoma showed the highest reducing potential against both cupric (154 mg TE/g extract for CUPRAC) and ferric (102 mg TE/g extract for FRAP) ions. Overall, Silene species could be considered as emerging interesting functional foods and sources of nutraceuticals with applications in the management of different diseases.
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    HPLC-MS/MS Profile, Analgesic and Anti-inflammatory Activities of Lawsonia inermis Seed Fractions
    (Faculty of Pharmacy, University of Benin, 2024) Moutawalli, Amina; Benkhouili, Fatima Zahra; El-Guourrami, Otman; El-Otmani, Najlae; El Ouazzani, Fadoua; Zengin, Gokhan; Cakir, Oguz
    Pain and inflammation are common symptoms present in many medical conditions, typically managed with analgesic and anti-inflammatory medications. However, these medications, whether targeting peripheral or central pathways, are often associated with adverse side effects. This study aimed to identify the constituents of Lawsonia inermis seed fractions, and evaluate the analgesic, and anti-inflammatory activities of these fractions. Chemical constituents of the fractions were characterized using high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). The analgesic properties were evaluated using the acetic acid-induced writhing and tail immersion tests, while anti-inflammatory activity was assessed via the carrageenan-induced paw edema model in mice. A total of 29 compounds were identified, with the ethanol fraction exhibiting the highest concentration of the constituents, amounting to 93.89 mg/g fraction. Major compounds detected in the ethanol fraction included gallic acid, catechin, tannic acid, vanillin, epicatechin gallate, isoquercitrin, and ellagic acid. The study revealed that the ethanol fraction demonstrated a notable peripheral analgesic effect, achieving 34.75% inhibition at a dose of 250 mg/kg in mice, while the aqueous fraction showed substantial central analgesic activity in rats at 500 mg/kg throughout the experimental period. Additionally, at a dose of 400 mg/kg, the ethanol fraction resulted in a 74.05% inhibition of inflammation in mice, outperforming indomethacin, which achieved a 58.09% inhibition at 10 mg/kg after 4 h. These findings present novel evidence that the fractions of L. inermis seed exhibit significant analgesic and anti-inflammatory activities, supporting the traditional medicinal use of this plant for the management of conditions involving pain and inflammation. © 2024 Moutawalli et al. © 2024 the authors.
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    In vitro and in silico perspectives on biological and phytochemical profile of three halophyte species-A source of innovative phytopharmaceuticals from nature
    (Elsevier Gmbh, 2018) Zengin, Gokhan; Aumeeruddy-Elalfi, Zaahira; Mollica, Adriano; Yilmaz, Mustafa Abdullah; Mahomoodally, Mohamad Fawzi
    Background: Halophytes are considered as valuable sources of traditional drugs in different countries. Purpose: The present study aimed to evaluate biological and chemical fingerprints of three halophytes (Arthrocnemum macrostachyum (Moric.) C, Koch, Halimione portulacoides (L.) Aellen and Salicornia europaea L.). Materials and methods: The antioxidant and enzymatic inhibitory potential (acetylcholinesterase, butyrylcholinesterase, alpha-amylase, alpha-glucosidase, and tyrosinase) were assessed. The total phenolic, flavonoid contents, and the chemical profiles were appraised using the ultra-high performance liquid chromatography-electrospray ionization-tandem mass spectrometry. Molecular docking was conducted to provide additional insights of molecular interactions of the enzymes/phytochemicals. Results: Ethyl acetate extract was the most efficient extract, with A. macrostachyum being the most potent towards DPPH and ABTS radicals and phosphomolybdenum assay. Ethyl acetate extract of A. macrostachyum was also the best reducing agent (CUPRAC and FRAP assays). Methanol and ethyl acetate extract of A. macrostachyum, H. portulacoides, and S. europaea showed significant enzyme inhibition potential. Ethyl acetate extract of A. macrostachyum showed the highest total phenolic (29.54 +/- 0.78 mgGAEs/g extract) while the ethyl acetate extract of S. europaea was more abundant in flavonoids (18.26 +/- 0.11 mgREs/g extract). Phytochemical profiling allowed the identification of several components in the methanolic extracts (16 in A. macrostachyum, 14 in H. portulacoides, and 11 in S. europaea), with quinic acid, p-coumaric acid, and rhamnetin being most abundant. Docking studies revealed that the above compounds showed scores for the enzymes tested. Conclusion: The three halophytes studies could be considered as potential sources of biologically-active compounds for novel phytopharmaceuticals development.