Effect of Different Drying Methods on Essential Oil and Antioxidant Activity (DPPH%) of Some Aromatic Plants

Abd El-Hafez, Z.A.; Elnaggar, A.H.; Hassan, M.R.

doi:10.21608/asejaiqjsae.2011.2341

Effect of Different Drying Methods on Essential Oil and Antioxidant Activity (DPPH%) of Some Aromatic Plants

Document Type : Original Article

Authors

¹ Medicinal and Aromatic Plants Res.Dept.Hort.Res.Inst.A.R.C. Alexandria, Egypt.

² 2Departments of Floriculture. Ornamental Horticulture and land scape Gradening. Faculty of Agr. (Elshatby), Alexandria Univ.Egypt

³ Departments of Floriculture. Ornamental Horticulture and land scape Gradening. Faculty of Agr. (Elshatby), Alexandria Univ.Egypt

10.21608/asejaiqjsae.2011.2341

Abstract

Different drying methods (Shade, Sun and Electric oven at 35C^o and 50 C^o were studied. Effects of these methods on percentage and composition of volatile oils and antioxidant activity (DPPH) of chamomile, peppermint, rosemary and sweet basil plants were studied.Using dry method in shade gave the highest mean value of DPPH% for all experimental plants compared with other drying methods. Shade drying generally seemed better, especially with regard to essential oil and major’s compoundspercentage of plants experiment followed by oven at (35 C^o) drying method. ADDITIONAL INDEX words: Drying methods, chamomile, peppermint, rosemary and sweet basil, DPPH%, chamazulen, menthol, borneol and linalool

Main Subjects