Drying reduces the moisture content and hence inhibits microbial growth and forestalls certain biochemical changes but, it does lead to loss of aroma and has an adverse effect on the nutrients, physical properties (Phoungchandang and Saentaweesuk, 2010) and antioxidant activity (Chan et al., 2009), at the same time, induces some novel components (Chen and Ho, 1989).
Air drying (AD), microwave drying (MD), vacuum drying (VD) and freezing drying (FD) are widely used to dehydrate fruits and vegetables. So far, no other studies have been focused on the comparison of volatiles in ginger