GC Technical Note

Easy Enrichment of Sesame Oil Fragrance with MonoTrap

GT032
GL Sciences Inc.

MonoTrap is a hybrid novel adsorbent that combines large surface area and properties of silica gel,activated carbon, and ODS. Due to the large surface area of porous silica and the adsorption effectcaused by the inclusion of activated carbon, a high collection efficiency is obtained. Therefore, highsensitivity analysis can be performed in a short time. In this study, we used MonoTrap RCC18 (withactivated carbon) to perform simple enrichment analyses of the flavor components of sesame oil. We
were able to identify a number of thiazoles and pyrazines, which are characteristic flavor componentsof sesame oil. Due to the large surface area, high sensitivity of many information was obtained even insolvent extraction, where sample loading is large and dilution is a concern.
Column ：InertCap Pure-WAX 0.25 mm I.D.×30 m df=0.25 μm
ProtocolSample

Sesame oil Trapping(Head Space)
MonoTrap；RCC 18 pcs
at 60 ℃ for 2 hours⑤200 μL Glass Insert(Start UP-Kit)

Solvent Extraction
Dichloromethane 200 μL
Ultrasonication for 5 mins
GC/MS

Directly to an Auto Sampler!

GC/MS Condition
System：SHIMADZU GC-2010, GCMS-QP2010
Column：InertCap Pure-WAX Cat.No. 1010-68142
0.25 mm I.D.×30 m df=0.25 μm

Column Temp
Carrier Gas
Injection：40 ℃ (5 min)→4 ℃/min→250 ℃ (5 min)Auto Sampler・・・ SHIMADZU AOC-20i：He 70 kPa
Vial ・・・Cat.No.1030-17105：Splitless, 1 μL 250 ℃
Insert・・・200 μL Glass Insert (Start UP-Kit)
SHIMADZU AOC-20i

Detection

Make sure that the micro syringe does not touch the bottomof the vial and have 10mm of space between the needle point
and vial bottom.

：MS Scan (m/z;35-450)

DCC18MonoTrap series lineupCat.NoProductShapeSize

RCC18ActiveCarbon

Function1050-72101 MonoTrap DCC18Disk

O.D.10mmx thick 1mm

Yes

C181050-72201 MonoTrap RCC18Rod

O.D.2.9 mmxI.D.1mm xＨｉｇｈｔ 5mm

Yes

C181050-71101 MonoTrap DSC18

Disk

O.D.10mmx thick 1mm

NoC181050-71201 MonoTrap RSC18Rod

O.D.2.9 mmxI.D.1mm xＨｉｇｈｔ 5mm

NoC18DSC18RSC18GL Sciences GC Technical Note

1 Ethylbenzene

234,5-Dimethylthiazole45

2-Formyl-5-methylfuran

2 Methyl ethyl disulfide

24

Dimethyl trisulfide

46

3,5-Octadien-2-one

3 3-Methylphenol

25

Methyl isopentyl disulphide

47

2-Acethylpyridine

4 Pyridine

262-Ethyl-6-methyl-pyrazine

48

Butyrolactone

2,4-Dimethyl-4,5-dihydro-1,3-thiazole

49

2-Acetyl-3,4,5,6-tetrahydropyridine

2-Ethyl-5-methyl-pyrazine

50

Acetylpyrazine

Acetdimethylamide

51

tetrahydrothiophene-2-one

Trimethylpyrazine

52

Isopropenylpyrazine
Acetophenone27

5 2-Heptanone

28

6 Heptanal

29

7 Pyrazine

30

8 2-Methylpyridine
9 Thiazole

31

2-Methyl-2-thiazoline

53

10 1-Pentanol

32

Vinylpyrazine

54

Furfuryl alcohol

11 Methylpyrazine

33

2,5-Dimethyl-3-ethylpyrazine

55

Ethyl n-propyl disulfide

12 4-Methylthiazole

34

Acetic acid56

2-Acetyl-3-methylpyrazine

13 2,4-Dimethylthiazole

35

Furfural

57

2-Isopropyl-4-methylthiazole(5-Methyl-2-furyl)methanol

14 Octanal

36

Acetol acetate

58

15 2,5-Dimethylthiazole

37

2-Acetylfuran

59

2(5H)-Furanone

Benzaldehyde

60

Acetamide

Pyrrole61

Acetamidoethane
Propanamide38

16 2,5-Dimethylpyrazine

39

17 2,6-Dimethylpyrazine
18 Ethylpyrazine40Ethyl isopropyl ketone

62

19 2,3-Dimethylpyrazine

41

Propanoic acid

63

Furfuryl methyl disulfide

20 2-Cyclopenten-1-one

42

Furfuryl acetate

64

Guaiacol21 5-Ethyl-2-methyl-1,3-thiazole
22 1-Hexanol

43
44

Tetrahydrothiophen-3-one
Hydracrylic acid, methyl ester

65
66

2-Acetylpyrrole
Pyrrole-2-carboxaldehyde

GL Sciences disclaims any and all responsibility for any injury or damage which may be caused by this data directly or indirectly. We reserve theright to amend this information or data at any time and without any prior announcement.

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