Vol. 10, Issue 10 (2021)

Author(s):
Malini Buvaneswaran, Venkatachalapathy N, Ashish Rawson and Sunil CK

Abstract:
Ginger (Zingiber officinale) is the famous spice and ayurvedic medicine used worldwide. The effect of Freeze-drying (FD) on the physical, chemical and mechanical properties of ginger slices is analyzed. The fresh rhizomes are collected, cleaned, and sliced into desired sizes, and dried using a freeze dryer (FD). The dried slice has a total color difference of 9.73±0.14 and has a higher whiteness index and hue angle, inhibit a lower chrome value, yellowness index. The rehydration ratio of FD slices was calculated as 7.80±1.06. the dried slices have very minimum volumetric shrinkage, SEM was used to analyze the structure of FD dried slices. The hardness of FD slices is identified as 6.57±0.34, which have significantly different from fresh samples. The volatile and nutritional composition of slices is analyzed using GC-MS and FT-IR.