Study on Chemical Constituents in Bentong Ginger

To investigate the nutritional value of Bentong ginger,national standards were used to measure the basic nutrients in Bentong ginger. The supercritical CO₂ extraction method was used to extract the oleoresin of Bentong ginger and Luoping ginger. Gas chromatography-mass spectrometry(GC-MS)was used to analyze the main volatile components of ginger oleoresin,high performance liquid chromatography(HPLC)was used to determine the contents of three gingerols in ginger oleoresin. Comparing the results with the nutrient contents of Luoping ginger in "China Food Composition",it was found that Bentong ginger was abundant in fat,dietary fiber,and trace elements such as iron,zinc,and selenium. Results showed that the main volatile constituents of Bentong ginger oleoresin were α-zingiberene(17.47%),β-funebrene(9.68%),and α-farnesene(7.49%),the contents of 6-gingerol,8-gingerol,and 10-gingerol in Bentong ginger oleoresin were 338.08,57.07,and 84.87 mg/g. The main volatile components of these two ginger oleoresin were found to be terpenes,while the contents of 6-gingerol,8-gingerol,and 10-gingerol in Bentong ginger oleoresin were 2.8,1.8,and 1.0 times of those in luoping ginger oleoresin.