Pressurized Hot Water Extraction of Zingiber officinale Fresh Rhizome

Pressurized hot water extraction of fresh rhizome of ginger was investigated as a novel and alternative technology in separation of various active component of ginger. The pressurized hot water extraction was carried out at pressure of 2 bar and temperature of 120 and 140 degrees C. The extraction process was conducted for 10 minutes. The components of the samples were determined by using GC-MS analysis. The results showed that pressurized hot water extraction of fresh rhizome zingiberene produced various active components of ginger. Ten and twelve constituents were identified in the pressurized hot water ginger extract performed at temperature of 120 and 140 degrees C, respectively. Zingiberene (38.23%); (+)-Beta-Funebrene (19.45%) and (-)-AR-Curcurnene (11.58%) were found to be the major constituents found in pressurized hot water ginger extract performed at temperature of 120 degrees C. Meanwhile Zingerone (30.44%) was found to be the predominant constituent found in pressurized hot water ginger extract performed at temperature of 140 degrees C.