Commagene Journal of Biology 2602-456X ABADER (Adıyaman Bilimsel Araştırmalar Derneği) 10.31594/commagene.1898499 Botany (Other) Microbiology (Other) Bitki Bilimi (Diğer) Mikrobiyoloji (Diğer) From Tradition to Science: Antibacterial and Antioxidant Activities of Cornus sanguinea L. subsp. australis (C. A. Mey.) Jáv. Extracts Gelenekten Bilime: Cornus sanguinea L. subsp. australis (C. A. Mey.) Jáv. Ekstraktlarının Yara İyileştirme Yaklaşımıyla Antibakteriyel ve Antioksidan Aktiviteleri https://orcid.org/0000-0003-1294-7376 Arslan Aydoğdu Elif Özlem İSTANBUL ÜNİVERSİTESİ https://orcid.org/0009-0004-7697-9515 Ekşi Ayşe Betül İSTANBUL ÜNİVERSİTESİ https://orcid.org/0009-0002-2517-8481 Feizollahi Sepideh İSTANBUL ÜNİVERSİTESİ https://orcid.org/0000-0002-9552-4848 Alp Şevket VAN YÜZÜNCÜ YIL ÜNİVERSİTESİ https://orcid.org/0000-0002-7831-0151 Koçyiğit Mine İSTANBUL ÜNİVERSİTESİ, ECZACILIK FAKÜLTESİ, ECZACILIK TEKNOLOJİSİ BÖLÜMÜ, FARMASÖTİK BOTANİK ANABİLİM DALI 03 31 2026 10 1 02 26 2026 03 19 2026 Copyright © 2017, Kommagene Biyoloji Dergisi 2017 Kommagene Biyoloji Dergisi

The antioxidant and antibacterial activities of leaf and fruit extracts from Cornus sanguinea L. subsp. australis (C. A. Mey.) Jáv. were comprehensively evaluated. Plant material was collected from the Bahçesaray district of Van province in Eastern Anatolia, Türkiye, a region characterized by semi-arid climatic conditions and high altitude. Antioxidant activity was measured using DPPH activity and CUPRAC capacity assays, as well as total phenolic and flavonoid content analyses. Antibacterial activity was tested using disk diffusion, well diffusion, and microdilution methods against Staphylococcus aureus, Staphylococcus epidermidis (Gram-positive), and Escherichia coli (Gram-negative). Leaf extracts contained significantly higher total phenolic and flavonoid content than fruit extracts and demonstrated stronger antioxidant capacity. In antibacterial assays, leaf extracts showed a pronounced inhibitory effect on Gram-positive bacteria but limited activity against E. coli. Microdilution analyses indicated that fruit extracts had notable antibacterial activity, especially against S. aureus and S. epidermidis, with low minimum inhibitory concentrations (MICs). Variations in MIC results between diffusion-based methods were attributed to differences in chemical composition, molecular weight, and diffusion capacity of the extracts. These findings suggest that C. sanguinea leaf and fruit tissues are promising natural resources for wound healing and dermatological applications due to their antioxidant and antibacterial properties. The results underscore the pharmaceutical potential of plants grown under environmental stress and provide a strong foundation for further phytochemical and in vivo research.

Cornus sanguinea L. subsp. australis (C. A. Mey.) Jáv.'in yaprak ve meyve ekstraktlarının antioksidan ve antibakteriyel aktiviteleri kapsamlı bir şekilde değerlendirilmiştir. Bitki materyali, yarı kurak iklim koşulları ve yüksek rakımıyla karakterize olan Doğu Anadolu'daki Van ilinin Bahçesaray ilçesinden toplanmıştır. Antioksidan aktivite, DPPH aktivitesi ve CUPRAC kapasitesi testleri ile toplam fenolik ve flavonoid içeriği analizleri kullanılarak ölçülmüştür. Antibakteriyel aktivite, Staphylococcus aureus, Staphylococcus epidermidis (Gram-pozitif) ve Escherichia coli (Gram-negatif) üzerinde disk difüzyon, kuyu difüzyon ve mikrodilüsyon yöntemleri kullanılarak test edildi. Yaprak özleri, meyve özlerine göre önemli ölçüde daha yüksek toplam fenolik ve flavonoid içeriğine sahipti ve daha güçlü antioksidan kapasite gösterdi. Antibakteriyel testlerde, yaprak ekstraktları Gram-pozitif bakteriler üzerinde belirgin bir inhibe edici etki gösterirken, E. coli'ye karşı sınırlı bir aktivite sergiledi. Mikrodilüsyon analizleri, meyve özlerinin, özellikle S. aureus ve S. epidermidis'e karşı, düşük minimum inhibe edici konsantrasyonlarla (MIC) dikkate değer bir antibakteriyel aktiviteye sahip olduğunu gösterdi. Difüzyon bazlı yöntemler arasında MIC sonuçlarındaki farklılıklar, ekstraktların kimyasal bileşimi, moleküler ağırlığı ve difüzyon kapasitesindeki farklılıklara bağlanmıştır. Bu bulgular, C. sanguinea subsp. australis yaprak ve meyve dokularının, antioksidan ve antibakteriyel özellikleri nedeniyle yara iyileşmesi ve dermatolojik uygulamalar için umut verici doğal kaynaklar olduğunu göstermektedir. Sonuçlar, çevresel stres altında yetişen bitkilerin farmasötik potansiyelini vurgulamakta ve daha ileri fitokimyasal ve in vivo araştırmalar için güçlü bir temel sağlamaktadır.

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