| 摘要 |
A method of making a barley extract using super critical fluid extraction is provided which allows for mass production of barley tea. The product contains characteristic flavor of barley and can be used as a functional beverage such as barley soybean milk, barley beverage, barley milk, etc. Carbon dioxide is passed through a freezer, filtered with a filter(1) and supplied to an extraction tank(4) through a compressor(2) with a flow regulator(3) to extract barley under a pressure of 300 to 400bar. Thereafter, the barley extract is sent to a separation tank(8) with a safety plate(5), a back pressure regulator(6), a heater(7) and a temperature controller(CT). In the extraction process, the barley is roasted, ground to a size of 1 to 5mm and then extracted at 30 to 45deg.C for 2 to 4hr. The barley extract obtained is dissolved in ethanol and added to conventional drinks in an amount of 0.5 to 5%.
|
