OMB Meeting Book_9-11-14

ISO/WD

Table B.8 –Stoichiometric factors (Si FA) for converting the fatty acid methyl esters (FAME) to fatty acids (FA)

Chain length

FA m.w.

TAG m.w.

Si (FA)

Configuation and group

Abbrev. FAME m.w.

C4:0 C6:0 C8:0

SFA SFA SFA SFA SFA SFA

102.1 88.1 302.4 130.2 116.2 386.5 158.3 144.2 470.7 186.3 172.3 554.9 214.4 200.3 639.0 242.4 228.4 723.2 240.4 226.4 717.1 256.4 242.4 765.3 254.4 240.4 759.2 270.5 256.4 807.3 268.5 254.4 801.3 284.5 270.5 849.4 282.5 268.4 843.4 298.5 284.5 891.5 296.5 282.5 885.5 296.5 282.5 885.5 294.5 280.5 879.4

0.863 0.892 0.911 0.925 0.935 0.942 0.942 0.945 0.945 0.948 0.948 0.951 0.950 0.953 0.953 0.953 0.952 0.952 0.952 0.952 0.952 0.952 0.957 0.957 0.957 0.956 0.956 0.956 0.956 0.959 0.960 0.960 0.960 0.959 0.963 0.963

C10:0 C12:0 C14:0 C14:1 C15:0 C15:1 C16:0 C16:1 C17:0 C17:1 C18:0

ω - 5 (or n-5)

cis MUFA

SFA

ω - 5 (or n-5)

cis MUFA

SFA

ω - 7 (or n-7)

cis MUFA

SFA

ω - 7 (or n-7)

cis MUFA

SFA

C18:1 TFA

trans *

C18:1

ω - 9 (or n-9)

cis MUFA

C18.2 TFA

trans *

C18:2

ω - 6 (or n-6)

cis PUFA LA 294.5 280.5 879.4 PUFA CLA 294.5 280.5 879.4

C18:2 CLA ω - 6 (or n-6) cis/ trans

C18:3

ω - 6 (or n-6)

cis PUFA

292.5 278.4 873.4 292.5 278.4 873.4

C18:3 TFA

trans *

C18:3 C20:0 C20:1 C20:2 C20:3 C20:3 C20:4 C20:5 C21:0 C22:0 C22:1 C22:2 C22:6 C24:0 C24:1

ω - 3 (or n-3)

cis PUFA ALA 292.5 278.4 873.4

SFA

326.6 312.5 975.7 324.6 310.5 969.6 322.5 308.5 963.6 320.5 306.5 957.5 320.5 306.5 957.5

ω - 9 (or n-9) ω - 6 (or n-6) ω - 6 (or n-6) ω - 3 (or n-3) ω - 6 (or n-6) ω - 3 (or n-3)

cis MUFA cis PUFA cis PUFA cis PUFA

cis PUFA ARA 318.5 304.5 951.5 cis PUFA EPA 316.5 302.5 945.4

SFA SFA

340.6 326.6 1017.8 354.6 340.6 1059.9 352.6 338.6 1053.8 350.6 336.6 1047.8

ω - 9 (or n-9) ω - 6 (or n-6) ω - 3 (or n-3)

cis MUFA cis PUFA

cis PUFA DHA 342.5 328.5 1023.6

SFA

382.7 368.7 1144.0 380.7 366.6 1137.9

ω - 9 (or n-9)

cis MUFA

*Do not include trans fatty acids into MUFA and PUFA sums.

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