Total phenolics and phenolic acids content in low (Chrysopogon gryllus) and mediocre quality (Festuca vallesiaca) forage grasses of Deliblato Sands meadow-pasture communities in Serbia
Djurdjevic, L.(Sinisa Stankovic Inst. for Biological Research , Belgrade (Serbia and Montenegro). Dept. of Physiology)E-mail:[email protected] | Mitrovic, M.(Sinisa Stankovic Inst. for Biological Research , Belgrade (Serbia and Montenegro). Dept. of Physiology) | Pavlovic, P.(Sinisa Stankovic Inst. for Biological Research , Belgrade (Serbia and Montenegro). Dept. of Physiology) | Perisic, S.(Sinisa Stankovic Inst. for Biological Research , Belgrade (Serbia and Montenegro). Dept. of Physiology) | Macukanovic-Jocic, M.(University of Belgrade (Serbia and Montenegro). Faculty of Veterinary Medicine)
Phenolic compounds influencing the quality and digestibility of grasses were analysed in Chrysopogon gryllus and Festuca vallesiaca from meadow-pasture communities. The concentration of total phenolics were measured spectrophotometrically, concentrations of phenolic acids by HPLC. The aboveground parts of C. gryllus contained 10.6 mg/g, those of F. vallesiaca 21.6 mg/g total phenolics. Bound phenolics dominated over free ones in both species. The concentration of both free and bound p-coumaric, ferulic, p-hydroxybenzoic and syringic acids was higher in C. gryllus (6.34 mg/g) than in F. vallesiaca (3.96 mg/g). Derivatives of cinnamic acid prevailed in both species in comparison with benzoic acid derivatives. Low nutritive quality of C. gryllus was connected with the high phenolic acids conc. in its tissues, whereas mediocre quality of F. vallesiaca with the high conc. of total phenolics.
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