✍ Scribed by Lück, H. ;Olivier, I.
No coin nor oath required. For personal study only.
The relationship between the numerical description of the colour [expressed by the CIE parameters x, y, z] and the β‐carotene, moisture and salt contents of edible fat‐emulsions was investigated statistically. The incorporation of moisture decreased the saturation of the colour[chromaticity coordinates x, y] and increased the lightness[luminous reflectance y] of the fat containing a specified β‐carotene content/kg product[fat + moisture]. The incorporation of gas had a similar effect. The addition of salt caused a slight reverse effect. reservation equations describing the relationship between the parameters were calculated.
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The use of infrared spectroscopy in the study of fats and oils is reviewed. The importance of the mid-infrared region in the study of lipids is shown. Di †erences between dispersive and Fourier-transform infrared techniques are commented on and the experimental methods used in the handling of oil an
The free and esterified sterol concentrations in 31 edible oils and fats were determined, including individual values for sitosterol, campesterol, stigmasterol, brassicasterol, D 5 -avenasterol, sitostanol, campestanol, and cholesterol. Free and esterified sterols were separated by solid-phase extra
## Abstract Determining the shelf‐life of edible fats and oils under normal storage conditions is a tedious and time‐consuming task. Accelerated tests are therefore frequently used to determine the stability of the products at ambient conditions. However, the mechanisms of lipid oxidation at accele