| 摘要 |
PCT No. PCT/GB95/00219 Sec. 371 Date Sep. 16, 1996 Sec. 102(e) Date Sep. 16, 1996 PCT Filed Feb. 3, 1995 PCT Pub. No. WO95/21242 PCT Pub. Date Aug. 10, 1995A method of determining one or both of the colour and bitterness of beer by illuminating the beer with light of a pre-determined wavelength, typically 400+/-30 nm, to cause iso- alpha -acids in the beer to fluoresce. The fluorescence is detected over a range of wavelengths, typically 420 to 673 nm, using a fluorescence spectrophotometer. One or both of the colour and bitterness of the beer is determined by comparing an output signal from the fluorescence spectrophotometer to output signals stored for beers of known colour and bitterness. |
