可以在紫茉莉中找到。
菜籽固醇是從植物中生成的，是類異戊二烯角鯊烯到菜油甾醇的中間產物。下表是藻類中檢測到的菜籽固醇種類和含量。
種屬 | A | B | C | D | E | F | G | H | 其他 |
Gonyaulax spp. | 100 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Peridinium foliaceum | 100 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Peridinium foliaceum | 80 | 20 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Gonyaulax diegensis | 39 | 0 | 0 | 0 | 0 | 0 | 0 | 29 | 32 |
Pyrocystis lunula | 76 | 6 | 0 | 2 | 1 | 0 | 0 | 0 | 15 |
Gonyaulax polygramma | 31 | 1 | 0 | 9 | 7 | 0 | 0 | 0 | 47 |
Gymnodinium wilczeki | 26 | 39 | 0 | 35 | 1 | 0 | 0 | 0 | 0 |
Glenodinium hallii | 8 | 50 | 0 | 0 | 0 | 42 | 0 | 0 | 0 |
Noctiluca milaris | 0 | 1 | 1 | 5 | 73 | 0 | 6 | 0 | 14 |
Gymnodinium simplex | 0 | 0 | 0 | 0 | 53 | 0 | 0 | 0 | 47 |
Prorocentrum cordatum | 7 | 0 | 0 | 0 | 53 | 0 | 63 | 0 | 25 |
A = 膽固醇 B = 菜油甾醇 C = 谷甾醇 D = 22-dehydrocholesterol ((22E)-cholesta-5,22-dien-3β-ol) E = brassicasterol F = stigmasterol G = 24-methylene cholesterol H = fucosterol
