Campesterol presence/content

Plant sterols identified in this oil consist mainly of p-sitosterol and campesterol (Table 4). About 4% brassicasterol was detected in the oU, which is typical for Brassica family plants (51). The total content of sterols in oil is comparable with other commercial oils (Tables 2 and 4). The presence of cholesterol in camelina oil makes it unique among vegetable oils, where only a trace has been detected in some tropical oils (51). 

Presence of phytosterols in oat oil was first reported by Idler et al. in 1953 (128). Oat grain contains 35-60 mg phytosterols/100 g grain (127). Phytosterol content of oat oil varies between 0.19% to 0.32% (125). p-Sitosterol (40-70% of total sterols) is the major phytosterol in oats. A - and A -Avenasterol are the two other phytosterols that present in significant quantities in oats. Campesterol, stigmasterol, A -stigmasten-3p-ol, A -cholesten-3p-ol, and cholesterol were also present in oat grain. 

Detection of adulteration in fats If a peak is observed in the gas chromatogram with the relative retention distance of 8-sitosterol and a peak height of at least 2% of the maximum, this indicates the presence of vegetable fat in an animal fat. The conclusion can be supported by the presence of peaks of brassicasterol, campesterol and sigma-sterol in the chromatogram. The total sterol content determined by method 6.2.20.b (quantitative analysis) has also to be taken into consideration when the conclusion is formulated. 

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