2.2.5. Colour Measurement Objective evaluation of surface colour (L*, a*, b*) for biscuit samples was measured using a UV-vis recording Spectrophotometer (Model UV 2100, Shimadzu Corporation, Kyoto, Japan) according to [19] with a reflectance attachment supported by an installed computer software. The values were calculated automatically and expressed in terms of colour difference (∆E) and percent whiteness (W). This software calculated colour indices from spectra given by the spectrophotometer.
đang được dịch, vui lòng đợi..
