Determination of kava lactones and flavonoid glycoside in Scorzonera austriaca by capillary zone electrophoresis

Effect of extraction solvents on the biomolecules and antioxidant properties of Scorzonera undulata (Asteraceae): Application of factorial design optimization phenolic extraction

“…Moreover, Scorzonera species are a rich source of dietary polyphenols such as fl avonoids and phenolic acids including caffeoylquinic acid derivatives Zhu et al, 2009;Jehle 2010;Akkol et al, 2011;Sari, 2012;Wang et al, 2012;Yang et al, 2013;Milella et al, 2014). This genus has attracted the attention of researchers due to the many chemical classes of its secondary metabolites, including dihydroisocoumarins, stilbenes, lignans, phenolic derivatives, phtalides (Sari et al, 2007), coumarins, kavalactones (Jiang et al, 2007), sesquiterpenes (Zidorn, 2008), triterpenes , and fl avonoids (Sareedenchai and Zidorn, 2010). Scorzonera undulata is perennial with a thick blackish stump and can be eaten in the spring, the leaves, are in clumps, with a narrow, very long limb that is wavy at the edge, glaucous, with very short woolly hairs.…”

Phenolic compounds fromScorzonera latifolia(Fisch. & Mey.) DC.

“…Latex obtained from the subaerial parts of the plant is used in traditional medicine as an analgesic, for the treatment of wounds and infertility in the form of a plaster and internally as an anthelmintic (Baytop, 1984(Baytop, , 1997 No phytochemical study has been recorded for S. latifolia. For the genus Scorzonera, previous chemical investigations have been carried out on S. austriaca, S. cretica, S. columnae, S. hispanica, S. humilis, S. radiata, S. tomentosa and S. veratrifolia, resulting in the isolation of dihydroisocoumarins (Paraschos, Magiatis, Kalpoutzakis, Harvala, & Skaltsounis, 2001;Sar| et al, 2007), flavonoids (Jiang, Wang, Lv, & Yue, 2007;Menichini, Statti, & Monache, 1994), lignans (Bryanskii, Tolstikhina, & Semenov, 1992a;Tolstikhina, Semenov, & Ushakov, 1999), neolignans (Tolstikhina, Bryanski, Syrincha, & Semenov, 1988;Tolstikhina & Semenov, 1998), benzylphthalides (Sar|, 2010;Sar| et al, 2007), bibenzyl derivatives (Wang et al, 2009;Zidorn, Ellmerer-Mu¨ller, & Stuppner, 2000b;Zidorn, EllmererMu¨ller, Sturm, & Stuppner, 2003;Zidorn et al, 2002), phenolic acids (Sar|, 2010;Tsevegsuren et al, 2007;Zidorn et al, 2005), kava lactones (Jiang et al, 2007), sesquiterpenes (Bryanskii, Tolstikhina, Zinchenko, & Semenov, 1992b;Li, Wu, Shi, & Zhu, 2004;Zidorn, Ellmerer-Mu¨ller, & Stuppner, 2000a), triterpenes (Ö ksu¨z, Go¨ren, & Ulubelen, 1990;Paraschos et al, 2001;Wang, Li, Qiu, & Guan, 2007). We reported previously that the AcOEt extracts of the roots of S. latifolia and S. veratrifolia displayed significant antimicrobial activities (Sar|, Ö zbek, & Ö zgo¨kc¸e, 2009).…”

Probing the binding of vitexin to human serum albumin by multispectroscopic techniques

“…Flavonoids are a large group of polyphenolic natural products that are widely distributed in fruits, vegetables, nuts and beverages [7][8][9]. They are effective constituents of some medicines especially of Chinese herbal medicines.…”