Browsing by Author "Kolak, Ufuk"

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Phenolic Profile, Fatty Acid and Essential Oil Composition Analysis and Antioxidant, Antialzheimer and Antibacterial Activities of Verbascum flavidum Extracts

Boga, Mehmet; Ertas, Abdulselam; Hasimi, Nesrin; Demirci, Serpil; Yilmaz, Mustafa Abdullah; Temel, Hamdi; Kolak, Ufuk (Chiang Mai Univ, 2016)

This paper is the first report about phytochemical analysis with LC-MS/MS and biological activities of Verbascum flavidum (Boiss.) Freyn & Bornm. Rutin (1077.09 +/- 77.47 mu g analyte/g extract) and chlorogenic acid (1012.42 ...
Phytochemical and biological investigations on two Nepeta species: Nepeta heliotropifolia and N. congesta subsp. cryptantha

Akdeniz, Mehmet; Ertas, Abdulselam; Yener, Ismail; Firat, Mehmet; Kolak, Ufuk (Wiley, 2020)

In the present study, the essential oil and aroma compositions of Nepeta heliotropifolia (NH) and N. congesta subsp. cryptantha (NC) were determined by gas chromatography-mass spectrometry (GC-MS) and gas chromatography-flame ...
Simultaneous determination of seven phthalic acid esters in beverages using ultrasound and vortex-assisted dispersive liquid-liquid microextraction followed by high-performance liquid chromatography

Yılmaz, Pelin Köseoğlu; Ertaş, Abdulselam; Kolak, Ufuk (Wiley-V C H Verlag Gmbh, 2014)

A sensitive, rapid, and simple high-performance liquid chromatography with UV detection method was developed for the simultaneous determination of seven phthalic acid esters (dimethyl phthalate, dipropyl phthalate, di-n-butyl ...