5. Conclusion
In this research, two ginger rhizomes were comparable in carbohydrate,fat and fibre contents. Oxalic and tartaric acids were two major acids in ginger rhizomes. However, total content of organic acids was much higher in CG than in GG. Total contents of
gingerols and shogaol in two ginger rhizomes were similar but the content of curcumin was higher in GG. Generally, the essential oils from two ginger rhizomes exhibited similar volatile profiles