Essential oils from the leaves and flowers of Leucophyllum frutescens (Scrophulariaceae): Phytochemical analysis and inhibitory effects against elastase and collagenase in vitro

Thabet, Amany A; Ayoub, Iriny M; Youssef, Fadia S; Al-Sayed, Eman Mohamed Kamal; Singab, Abdel Nasser B;