Effect of New Solar-Drying Designs for Chamomile Essential Oil Yield and Its Chemical Constituents in Egypt

Document Type : Original Article


1 Food Science Department, Faculty of Agriculture, Ain Shams University, Cairo, Egypt.

2 Chemistry of Natural and Microbial Products Department, Pharmaceutical Industry Division, National Research Centre, El-Buhouth St., Dokki, Giza, 12622, Egypt.

3 Food Science Department, Faculty of Agriculture, Ain Shams University,Cairo, Egypt.


Egyptian medicinal and aromatic plants (MAPs) sector suffers from poor drying conditions of the product in terms of quality and safety standards, lack of professional advisory services, in addition to a high undeveloped value chain. Four designs were established in this study and focused on different methods for chamomile drying, the results of the 8/9/2 (B) design of the solar-assisted stack dryer were a masterpiece and promising for drying chamomile plant. The results of volatile oil extraction showed that an increased yield of volatile oil extraction by 30 % compared with traditional drying methods (control). GC-MS analysis indicated the essential oil chemical composition for the new drying method, were found to be the main active compound Bisabolol oxide A which were 54% in 8/9/2 (B) design of the solar- assisted stack dryer compared with the control which was 38.36% in control. The study method was promising and distinctive because it increases the yield of volatile oil extraction, maintains chemical structure compared with the control.