TABLE 15.
Total phytosterol contents (as mg free sterols/g lipids) in total lipid extracts of cereal by‐products
| Brassicasterol | Campesterol | Compestanol | Stigmasterol | Sitosterol | Sitostanol | Unknown 1 | Unknown 2 | Cycloartenol &like phytosterols | 24‐Methylenecycloartanol‐&like phytosterols | Total mg/m lipids |
Total mg/g Raw material |
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rice bran | — | 2.6 | 0.3 | 1.8 | 4.9 | 0.8 | 0.8 | 0.3 | 3.33 b | 5.25 c | 20.3 | 4.5 |
| Wheat bran | 0.5 | 3.6 | 1.7 | 0.2 | 4.5 | 2.4 | 0.6 | 0.3 | 0.48 d | 3.01 d | 17.6 | 1.2 |
| Wheat germ | 0.1 | 4.7 | 0.6 | 0.2 | 11.2 | 0.8 | 1.4 | 0.3 | 0.69 d | 1.03 e | 21.2 | 2.4 |
| Durum wheat | 0.5 | 2.1 | 2.9 | 0.3 | 4.7 | 2.1 | 1.1 | 0.1 | 0.31 d | 0.70 e | 15.0 | 1.8 |
| Oat bran | — | 0.2 | 0.04 | 0.1 | 1.5 | 0.07 | 0.6 | 0.0 | 0.26 b | 0.38 c | 3.4 | 1.5 |
| Oat hull | — | 0.6 | 0.09 | 0.5 | 4.0 | 0.4 | 0.7 | 0.20 | 0.53 b | 0.85 c | 8.1 | 0.7 |
| Corn fine fiber | — | 4.8 | 1.1 | 5.0 | 27.6 | 4.1 | 1.7 | 1.4 | 1.44 d | 0.82 e | 0.1 | 0.3 |
a
This unknown peak was identified as lanosterol in rice bran lipids and as avenasterol in wheat bran and oat bran lipids. It was not identified in other samples.
b
Identified as cycloartenol.
c
Identified as 24‐methylenecycloartanol.
d
Unidentified compounds that had the same GC retention time as cycloartenol but had different MS spectra.
e
Unidentified compounds that had the same GC retention time as 24‐methylenecycloartanol but had different MS spectra.
A dash (—) indicates not detected.