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Phenolic Constituents Of Hypericum Triquetrifolium Turra (Guttiferae) Growing In Turkey: Variation Among Populations And Plant Parts, Cüneyt Çirak, Jolita Radusiene, Valdimaras Janulis, Liudas Ivanauskas, Necdet Çamaş, Ali̇ Kemal Ayan
Phenolic Constituents Of Hypericum Triquetrifolium Turra (Guttiferae) Growing In Turkey: Variation Among Populations And Plant Parts, Cüneyt Çirak, Jolita Radusiene, Valdimaras Janulis, Liudas Ivanauskas, Necdet Çamaş, Ali̇ Kemal Ayan
Turkish Journal of Biology
Hypericum triquetrifolium Turra (Guttiferae) has received considerable scientific interest in recent years, as it is a source of a variety of biologically active compounds including phenolics. The present study was conducted to determine the variation in the content of several phenolics, namely phenylpropane chlorogenic acid and flavonoids such as rutin, hyperoside, apigenin-7-O-glucoside, kaempferol, quercitrin, quercetin and amentoflavone among four H. triquetrifolium populations from the Central Black Sea Region of Turkey. The aerial parts representing a total of 30 shoots were collected at full flowering in each population. After drying at room temperature, they were dissected into floral, leaf and stem …
Biological Characterization Of Iranian Walnut (Juglans Regia) Leaves, Reza Sharafati Chaleshtori, Farhad Sharafati Chaleshtori, Mahmoud Rafieian
Biological Characterization Of Iranian Walnut (Juglans Regia) Leaves, Reza Sharafati Chaleshtori, Farhad Sharafati Chaleshtori, Mahmoud Rafieian
Turkish Journal of Biology
In recent years, emphasis has been placed on the use of natural materials in the control and treatment of various infections, as some chemically synthesized drugs have undesirable side effects. In this study, the ethanol extract of Iranian walnut leaves was examined for antibacterial activities on Streptococcus mutans, Streptococcus salivarius, Streptococcus sanguinis, and Actinomyces viscosus using the microdilution method. Total phenols, flavonoids, and flavonols were also determined colorimetrically. The minimum inhibitory concentrations (MIC) for ethanolic extract ranged between 15.6 and 187.5 mg/mL and minimum bactericidal concentrations (MBC) ranged between 31.25 and 250 mg/mL. Total phenols were 410 ± 14.43 mg/g …