Table 2.
Fatty acid composition of yellow grease
| Item | |
|---|---|
| Dry matter, % as-fed | 98.7 |
| Total fatty acids, % of DM1 | 85.7 |
| Free fatty acids, % of DM2 | 14.8 |
| Fatty acid profile, g/100 g of fatty acid methyl esters1 | |
| Lauric (C12:0) | 0.09 |
| Myristic (C14:0) | 0.67 |
| Pentadecanoic (C15:0) | 0.10 |
| Palmitic (C16:0) | 12.7 |
| Palmitoleic (C16:1) | 0.84 |
| Heptadecanoic(C17:0) | 0.29 |
| Stearic (C18:0) | 6.19 |
| Oleic (C18:1 cis-9) | 27.0 |
| Vaccenic (C18:1 cis-11) | 1.77 |
| Linoleic (C18:2 n-6) | 30.5 |
| Linolenic (C18:3 n-3) | 4.05 |
| Arachidic (C20:0) | 0.29 |
| Eicosenoic (C20:1 cis-11) | 0.33 |
| Eicosadienoic (C20:2 n-6) | 0.07 |
| Behenoic (C22:0) | 0.21 |
| Lignoceric (C24:0) | 0.09 |
| Other (C12:0 to C24:0) | 0.63 |
| Total SFA | 20.63 |
| Total MUFA | 29.94 |
| Total PUFA | 34.62 |
1 Analyzed composition according to Sukhija and Palmquist (1988).
2 Maximum level according to the manufacturer (Texas Feed Fat Co., Inc., Hereford, TX).