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Table 5 Gas chromatography-mass spectrometry (GC-MS) analysis of WMP/MP medium extract mixture (1:1, w/w) before and after fermentation by C. Butyricum NE95

From: Mathematical modeling of biohydrogen production via dark fermentation of fruit peel wastes by Clostridium butyricum NE95

Medium

Compound

Formula

Retention time

Area

Area (%)

Mixture of WMP and MP control medium

Bis(2-ethylhexyl) phthalate

C24H38O4

44.418

14,282,180

20.62

9,12-Octadecadienoic acid (Z, Z)

(Grape seed oil) (linoleic acid)

C18H32O2

37.765

7,491,950

10.82

Hexadecanoic acid, ethyl ester (palmitic acid, ethyl easter)

C18H36O2

34.536

6,242,070

9.01

Linolenic acid, ethyl ester

C20H34O2

37.902

5,789,825

8.36

Palmitic acid

C16H32O2

33.992

3,381,830

4.88

Stearic acid, ethyl ester

C20H40O2

38.323

2,831,474

4.09

Pentacontanoic acid, ethyl ester

C52H104O2

48.039

2,214,423

3.20

Mixture of WMP and MP spent medium

Bis(2-ethylhexyl) phthalate

C24H38O4

44.426

24,145,631

23.14

Hexadecanoic acid, ethyl ester (palmitic acid, ethyl easter))

C18H36O2

34.537

10,104,246

9.68

Stearic acid, ethyl ester

C20H40O2

38.326

7,010,313

6.72

Linolenic acid, ethyl ester

C20H34O2

37.886

6,293,512

9.87

Palmitic acid

C16H32O2

33.990

3,926,689

3.76

Eicosyl trifluoroacetate

C22H41F3O2

47.997

3,515,146

3.37

Hexacosene

C26H52

45.004

3,137,158

3.01

Citric acid, triethyl ester

C12H20O7

27.468

1,088,892

1.04

Hexacosyl heptafluorobutyrate

C30H53F7O2

50.785

2,108,297

2.02

Tetratriacontyl heptafluorobutyrate

C38H69F7O2

53.409

1,434,813

2.22