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Öğe Alyssum sibiricum Willd. Bitkisinin GC-MS Analizi ve Antioksidan Aktivitesinin Tayini(2024) Argon, Merve; Çalışkan, Hilmican; Çakır, Cansel; Öztürk, Mehmet; Şabudak, TemineBu çalışmada, Trakya Bölgesinde yetişen Alyssum sibiricum Willd. bitkisinin ham ekstrelerinde antioksidan aktivitesi incelenmiş ve hekzan ekstresinin kimyasal içeriği GC-MS ile belirlenmiştir. Bu amaçla; Alyssum sibiricum sırasıyla hekzan, kloroform, etil asetat ve metanol ile ekstrakte edilmiş ve bu ekstrelerde antioksidan aktivite; DPPH, ABTS, ?-Karoten-linoleik asit renk giderim aktivitesi ve CUPRAC yöntemleri kullanılarak araştırılmıştır. Antioksidan aktivite sonuçlarına göre; tüm yöntemlerde, en yüksek antioksidan aktiviteyi metanol ekstresi göstermiştir. A. sibiricum bitkisinin hekzan ekstresinin GC-MS sonuçlarına göre, 41 bileşik tespit edilmiştir. Bu bileşikler arasında; n-Dokosan (%23.24), palmitik asit (%15.02), laurik asit (%7.67) ve 1-hekzadekanol (%5.82), hekzan ekstresinin temel bileşiklerini oluşturmuştur.Öğe Anticholinesterase, Antidiabetic and Antioxidant Activities of Chloroform Extract of Genista carinalis(Nazım ŞEKEROĞLU, 2023) Çalışkan, Hilmican; Orak, Hakime Hülya; Cakır, Cansel; Argon, Merve; Şabudak, Temine; Öztürk, Mehmet; Güler, NecmettinAlzheimer's disease, diabetes has become an increasing public health issues in recent years. On the other hand, synthetic drugs are expensive, could be inadequate to treat diseases, could be cause irritation, and side effects. Therefore, increasingly more researchis being done to plant-derived formulas, bioactive ingredients, which can be an alternative to synthetic drugs for treatments to solve basic health problems. In this study the antioxidant, anticholinesterase and antidiabetic activities of G. carinalis in the chloroform extract were determined. Based on the results, the extract was not observed inhibitory activities of α-glucosidase and α-amylase. It showed better activity for acetylcholiesterase activity than the butylrylcholinesterase activity. The antioxidant potential of G. carinalis chloroform extract was determined with different assays. The TEAC value was determined to be 0.484 mmol TE/g, FRAP value was found to be 1023.20 µmol Fe2+/g for G. carinalis chloroform extract. The EC50 value of DPPH assays for extract was found to be 0.101 μg/ml.Öğe Antimicrobial and Antioxidant Efficacy of the Lipophilic Extract of Cirsium vulgare(Mdpi, 2023) Kurc, Mine Aydin; Orak, Hakime Hulya; Gulen, Dumrul; Caliskan, Hilmican; Argon, Merve; Sabudak, TemineThe aim of this study was to investigate the compounds in the hexane extract of Cirsium vulgare (Savi.) Ten. and to determine the antibacterial, antifungal, and antioxidant activities of different extracts. The Cirsium vulgare (NGBB 7229) plant was collected from Turkey's Trakya region. Crude extracts were obtained using different solvents. The chemical composition of Cirsium vulgare was determined in hexane extract using gas chromatography mass spectrometry. The antioxidant activities of the extracts were evaluated by Trolox equivalent antioxidant activity (TEAC), ferric-reducing antioxidant power (FRAP), cupric-reducing antioxidant capacity (CUPRAC), the beta-carotene bleaching method, and the determination of superoxide anion scavenging activities. The antibacterial activity was tested against Staphylococcus aureus, Bacillus subtilis, Escherichia coli, Pseudomonas aeruginosa, Proteus mirabilis, and Salmonella typhimurium, whereas the antifungal activity was tested against Candida albicans, Candida glabrata, Candida parapsilosis, Candida krusei, Penicillium chrysogenum, and Aspergillus fumigatus by applying microdilution methods. A total of 41 bioactive compounds were identified using the GC-MS library. Terpenoids were found to be dominant (52.89%), and lup-20(29)-en-3-yl-acetate and lupeol were the most abundant terpenoids. The highest total flavonoid content (25.73 mg catechin/g) and antioxidant capacity were found in the methanolic extract. The highest antibacterial activity was detected against Bacillus subtilis in the ethyl acetate extract, and the highest antifungal activity was found against Candida krusei and Aspergillus fumigatus in the hexane extract. The observed antioxidant characteristics of the C. vulgare extracts could be attributed to the presence of flavonoids. The high antifungal activity of the hexane extract against all fungal strains can be attributed to its constituents, i.e., terpenoids. This study discloses the potential antioxidant and antimicrobial activities, including some bioactive components, of Cirsium vulgare and implies that Cirsium vulgare holds possible applications in the food and pharmaceutical industries as an antioxidant, antibacterial, and antifungal agent.Öğe Chemical Composition and Antibacterial Activity of Volatile Compounds Genista carinalis Plant(2024) Çalışkan, Hilmican; Argon, Merve; Gurgan, Muazzez; Sabudak, TemineVolatile compounds play a significant role in the plant chemistry. Natural products have been widely used in antiviral, antibacterial, antiparasitic, antifungal, insecticidal, medicinal and cosmetic applications since the Middle Age. Our aim in this study was to investigate the volatile components of the Genista carinalis Griseb. (Fabaceae) plant grown in the Trakya region by GC-MS method and to determine the antibacterial activity of the raw extracts. Volatile components of n-hexane extract from the plant G. carinalis were investigated using the GC-MS method. As a result of our research on the volatile components of G. carinalis, fifty-two bioactive components were identified. The ethyl acetate extract of G. carinalis was the most effective on both Grampositive and Gram-negative bacteria tested, with higher antibacterial activity against Gram positive bacteria.Öğe Chemical Profile, Antiproliferative and Antioxidant Activities of Genista januensis subsp. lydia (Boiss.) Kit Tan & Ziel (Fabaceae)(Slovensko Kemijsko Drustvo, 2025) Argon, Merve; Sabudak, Temine; Yildirim, Buse Nur; Batar, Bahadir; Orak, Hakime Hulya; Yabas, Mehmet; Bostanci, AytenThe aim of this study was to investigate the anticancer and antioxidant activities of Genista januensis subsp. lydia (Fabaceae) extracts and to isolate the phytochemical compounds responsible for these activities. The G. januensis plant was extracted by maceration with solvents of increasing polarity. The total phenolic/flavonoid content, antioxidant activities and anticancer activity were investigated by performing cytotoxicity, apoptosis and cell cycle analyses in crude extracts. We found that the EtOAc extract had the highest antioxidant and anticancer activities and this extract was selected for isolation studies. All purified flavonoid compounds from the EtOAc extract were elucidated using 1D and 2D NMR and mass spectroscopic methods and compared with the literature. A new biflavonoid 4 was isolated together with three known isoflavonoids (genistein (1), genistin (2) and 4'-hydroxyisoflavone (3)) from Genista januensis subsp. lydia (Fabaceae). MTT analysis of compounds 2, 3, and 4 was used to evaluate the anticancer activity. Compound 4 was invesigated for its antioxidant activities. These findings suggest that G. januensis subsp. lydia represents new potential natural sources of effective antiproliferative and antioxidant agents.Öğe Genista januensis subsp. lydia (fabaceae) bitkisinin biyoaktivite rehberli izolasyonu ve antikanser, antioksidan aktivitelerinin araştırılması(Tekirdağ Namık Kemal Üniversitesi, 2023) Argon, Merve; Şabudak, TemineBu çalışmada, Genista januensis subsp. lydia (Boiss.) Kit Tan & Ziel. bitkisinin antikanser ve antioksidan aktivitelerinin incelenmesi, aktiviteden sorumlu fitokimyasal bileşiklerin, özellikle yeni fenolik/flavonoid bileşiklerinin izolasyonu, kimyasal yapılarının belirlenmesi, uçucu bileşiklerinin tayini ve miktarı yeterli olan saf bileşiklerde antikanser ve antioksidan aktivitelerinin incelenmesi amaçlanmıştır. Çalışma kapsamında G. januensis bitkisinin; hekzan, kloroform, etil asetat, metanol çözücüleri kullanılarak, maserasyon yöntemiyle ekstraksiyonu yapılmış ve ham ekstrelerde sitotoksisite, apoptoz, hücre döngüsü analizleri yapılarak antikanser etkisi araştırılmıştır. Ayrıca ham ekstrelerde toplam fenolik/flavonoid madde miktarı tayini ile DPPH, ABTS ve FRAP yöntemleri kullanılarak antioksidan aktiviteleri belirlenmiştir. Elde edilen ekstrelerin antikanser ve antioksidan aktivite sonuçlarına göre en yüksek aktivite gösteren ekstrenin, etil asetat ekstresi olduğu belirlenmiş ve izolasyon çalışması için etil asetat ekstresi seçilmiştir. Etil asetat ekstresinin kromatografik yöntemlerle izolasyonu yapılmış ve izole edilen bileşiklerin 1D, 2D NMR ve kütle spektroskopisi ile molekül yapıları aydınlatılmıştır. Çalışmanın sonucunda, G. januensis bitkisinin etil asetat ekstresinden 3 izoflavonoid, 1 biflavonoid, 1 fenolik bileşik ve 2 şeker türevi olan 7 bileşik izole edilmiştir. İzole edilen 7 bileşik G. januensis bitkisinden ilk defa izole edilmiştir. Miktarı yeterli olan izole bileşiklerin sitotoksisitesi araştırılmıştır. (5), (6) ve (7) numaralı bileşiklerin antikanser etkiye sahip olduğu düşünülmektedir. Bununla birlikte; (4) numaralı antioksidan aktivitesi araştırılmıştır.Öğe Isolation of new isoflavonoids derivatives from Genista carinalis Griseb. and biological activity(Taylor & Francis Ltd, 2024) Caliskan, Hilmican; Sabudak, Temine; Orak, H. Hulya; Argon, Merve; Cakir, Cansel; Ozturk, MehmetThe genus Genista L. has been used in the treatment of rheumatic, diabetic and ulcerous diseases. Herein, the antioxidant, anticholinesterase, and antidiabetic activities of Genista carinalis Griseb. extracts were determined. The antioxidant activity was performed FRAP, DPPH, CUPRAC, and TEAC assays, while anticholinesterase activity was performed against acetylcholinesterase and butyrylcholinesterase, and antidiabetic activity against alpha-amylase and alpha-glucosidase, spectrophotometrically. The activity results allowed for the study of the phytochemistry of the ethyl acetate extract that exhibited the best activity. Three new isoflavonoids, 5-methyl-7-methoxy-4 '-hydroxy isoflavone (3), 7-acetyl-5-hydroxy-4 '-methoxy isoflavone (4) and 7-O-[beta-D-glucopyranosyl-(6 ''-> 6 ''')-beta-D-glucopyranosyl]-5-4 '-dihydroxy isoflavone (5), together with two known compounds, isoprunetin (1) and 6-hydroxy biochanin A (2) were isolated from the ethyl acetate extract. Their structures were elucidated by extensive 1D-, 2D-NMR, and MS data analyses. Compound (3) showed the highest antioxidant potential in TEAC, FRAP, and CUPRAC assays, while (2) exhibited higher butyrylcholinesterase enzyme inhibitory activity among the isolated compounds.
