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The following table summarizes the composition of common fatty oils used in the production of (mono alkyl ester) biodiesel [1391]. The designation Ca:b is used to describe the fatty acid molecules where a is the chain length in carbon atoms and b is the number of unsaturated carbon-carbon bonds.
| Rapeseed (high erucic) | Rapeseed (low erucic) | Soybean | Sunflower | Coconut oil | Palm kernel oil | Palm oil (Africa) | Palm oil (Indonesia) | Beef tallow | Chicken fat | Fish oil | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Saturated fatty acids | < C10:0 | ~13 | ~7 | trace | ||||||||
| C12:0 | trace | trace | trace | 41-46 | 41-45 | trace | trace-0.5 | trace | trace | |||
| C14:0 | trace | trace | <0.5 | trace-0.1 | 18-21 | 15-17 | 1-2 | ~1 | 2-4 | ~1 | 6-9 | |
| C16:0 | 2-4 | 3-6 | 8-12 | 5.5-8 | 9-12 | 7-10 | 41-46 | 41-47 | 23-29 | 20-24 | 11-20 | |
| C18:0 | 1-2 | 1-2.5 | 3-5 | 2.5-6.5 | 2-4 | 2-3 | 4-6.5 | 4-6 | 20-35 | 4-7 | 1-4 | |
| C20:0 | 0.5-1 | <1 | <0.5 | <0.5 | trace | trace-0.3 | ~0.5 | ~0.5 | <0.5 | trace-1 | ||
| C22:0 | 0.5-2.0 | trace-0.5 | trace | 0.5-1.0 | trace | trace-0.5 | trace | trace | ||||
| C24:0 | 0.5 | trace-0.2 | <0.5 | trace-1 | ||||||||
| Unsaturated fatty acids | C14:1 | trace | ~0.5 | trace | ||||||||
| C16:1 | ~0.5 | 0.1-0.5 | trace | <0.5 | trace | <0.5 | ~0.5 | 2-4 | ~7 | 6-11 | ||
| C18:1 | 11-24 | 52-66 | 18-25 | 14-34 | 5-9 | 10-18 | 37-42 | 37-41 | 26-45 | 38-44 | 12-15 | |
| C18:2 | 10-22 | 17-25 | 49-57 | 55-73 | 0.5-3 | 1-3 | 8-12 | ~10 | 2-6 | 18-23 | 1-2 | |
| C18:3 | 7-13 | 8-11 | 6-11 | trace-0.4 | trace | trace-0.5 | trace-0.5 | trace-0.5 | ~1 | ~1 | 0.5-1 | |
| C20:1 | ~10 | 1.5-3.5 | <0.5 | <0.5 | trace | trace-0.5 | trace | trace | <0.5 | 1-16 | ||
| C20:x* | trace-0.1 | trace | 6-19 | |||||||||
| C22:1 | 41-52 | trace-2.5 | trace-0.3 | 1-20 | ||||||||
| C22:x* | ~0.5 | 0.5-1 | 5-14 | |||||||||
| C24:1 | trace | trace-1 | ||||||||||
| Other constituents | Phosphatides | 2.5 | 1.1-3.2 | <1.5 | 0.05-0.1 | <0.07 | ||||||
| Tocopherols | 0.07-0.08 | 0.09-0.12 | 0.07-0.1 | 0.003 | 0.02-0.12 | 0.001 | ||||||
| Sterols | 0.5-1.1 | 0.2-0.4 | 0.25-0.45 | 0.05-0.1 | 0.08-0.12 | 0.04-0.08 | 0.08-0.14 | ~0.3 | ||||
| * x > 1 trace ≤ 0.05% | ||||||||||||
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