Table 3 Fatty acid (FA) composition of samples of H. diversicolor at the beginning of the experiment (Day 0) and H. diversicolor fed the experimental diets (Control, inorganic Fe and organic Fe) for 49 d. Data are % of total FA (average ± SD, n = 6). NMI = non-methylene-interrupted fatty acids (e.g., 20:3 NMI).

From: Investigating the potential of dietary iron supplementation to enhance long-chain polyunsaturated fatty acid biosynthesis in Hediste diversicolor

FA

Day 0

Control

inorganic Fe

Organic Fe

14:0

2.8 ± 0.2

0.4 ± 0.3

0.3 ± 0.2

0.3 ± 0.2

16:0

17.6 ± 0.7

15.6 ± 1.9

16.5 ± 1.6

15.3 ± 1.6

16:1n-7

1.7 ± 0.2

0.7 ± 0.1

0.5 ± 0.3

0.6 ± 0.1

18:0

5.7 ± 0.4

3.9 ± 0.3

4.2 ± 0.7

3.9 ± 0.8

18:1n-13

3.6 ± 0.4

3.1 ± 0.6

2.5 ± 1.0

2.6 ± 1.0

18:1n-9 (OA)

8.2 ± 0.3

25.2 ± 2.1

26.1 ± 3.4

26.1 ± 3.3

18:1n-7

2.5 ± 0.1

1.3 ± 0.2

0.9 ± 0.2

0.8 ± 0.2

18:2n-6 (LA)

10.2 ± 0.5

21.8 ± 1.0

20.5 ± 1.3

21.0 ± 1.1

18:3n-3 (ALA)

1.2 ± 0.1

2.0 ± 0.4

2.1 ± 0.4

2.2 ± 0.4

20:1n-11

1.4 ± 0.2

1.1 ± 0.3

1.1 ± 0.3

1.2 ± 0.3

20:1n-9

2.7 ± 0.4

2.3 ± 0.3

2.2 ± 0.3

2.1 ± 0.4

20:3 nmi

1.5 ± 0.1

1.5 ± 0.3

0.9 ± 0.2

1.5 ± 0.3

20:2n-6

3.3 ± 0.3

4.6 ± 0.7

4.4 ± 0.9

4.4 ± 0.8

20:2 NMI

0.5 ± 0.1

1.1 ± 0.2

0.9 ± 0.2

1.1 ± 0.2

20:4n-6 (ARA)

1.3 ± 0.1

2.5 ± 0.3

2.5 ± 0.3

2.8 ± 1.0

20:5n-3 (EPA)

10.2 ± 0.4

3.1 ± 0.5

3.7 ± 1.0

3.4 ± 1.0

22:2 NMI

1.7 ± 0.2

1.3 ± 0.3

1.1 ± 0.3

1.2 ± 0.4

22:5n-3

0.9 ± 0.1

0.2 ± 0.1

0.3 ± 0.1

0.2 ± 0.1

22:6n-3 (DHA)

10.9 ± 0.7

0.8 ± 0.1

0.7 ± 0.2

0.7 ± 0.2

SFA

27.4 ± 0.9

20.4 ± 2.0

21.5 ± 1.8

20.0 ± 2.1

MUFA

23.5 ± 0.8

35.9 ± 1.1

35.2 ± 2.1

35.2 ± 2.4

n-3 PUFA

23.7 ± 0.4

6.5 ± 1.0

7.2 ± 1.3

6.8 ± 0.9

n-6 PUFA

16.2 ± 0.6

30.9 ± 1.4

29.0 ± 1.7

30.2 ± 1.7

n-3 LC-PUFA

22.6 ± 0.4

4.5 ± 0.9

5.1 ± 1.3

4.6 ± 1.1

n-6 LC-PUFA

6.1 ± 0.3

9.1 ± 0.8

8.6 ± 1.4

9.2 ± 1.8

UI

198.1 ± 2.3

140.8 ± 5.7

139.7 ± 8.1

140.3 ± 8.9

  1. OA, oleic acid; LA, linolenic acid; ALA, alpha-linolenic acid; ARA, arachidonic acid; EPA, eicosapentaenoic acid; DHA, docosahexaenoic acid; NMI, non-methylene interrupted fatty acids; SFA, saturated fatty acids; MUFA, monounsaturated fatty acids; PUFA, polyunsaturated fatty acids; LC-PUFA, long-chain polyunsaturated fatty acids; UI, unsaturation index; ∑ [area of fatty acid * number of unsaturations]).