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SPME萃取頭(探針):

�(chǎn)品編號:9117006 DVB/CAR/PDMS三層復合手動探針�50/30 μm, 1 cm

       色譜條件

樣品�2 g 茶葉新鮮葉片樣品放到20 ml 頂空瓶中

萃取溫度�40;萃取時間:60 min

解吸時間�2 min;解吸溫度:250

樣品進樣口:GC

進樣方式:手�

進樣口:250分流,分流比�5:1

色譜柱:HP-INNOWax, 30 m × 250 μm × 0.25 μm

程序升溫:起始溫�50,保�5 min,以10/min 升到240,保�10 min

采集模式:全掃描,掃描范圍:30-400 m/z

離子源:230�MS 四極桿:150

       檢測�(jié)�

茶葉風味物質(zhì) SPME-GC/MS 檢測總離子流色譜�

  共檢測到49種有機化合物,其中包�17種醇�3種醛�8種烷��2種烯��2種芳香烴�1種酸�15種酯�1種酮,各自含量如下表所�。檢測結(jié)果表明,6 號化合物乙酸-3-己烯-1-醇酯含量最�,占總量17.313%�

SPME-GC/MS 檢測�(jié)�

序號

化合物名�

保留時間

峰面積百分比總量�%

1

3-Hexanol3-己醇�

7.471

0.239

2

3-Methyl-1-butanol 3-甲基-1-丁醇�

7.653

0.818

3

2-Hexenal2-己烯醛)

7.954

10.425

4

3,7-Dimethyl-1,3,6-octatriene3,7-二甲�-1,3,6-辛三烯)

8.995

0.202

5

Acetic acid hexyl ester(乙酸己酯)

9.188

1.478

6

3-Hexen-1-ol acetate(乙�-3-己烯-1-醇酯�

9.954

17.313

7

2-Hexen-1-ol acetate(乙�-2-己烯-1-醇酯�

10.222

0.882

8

1-Hexanol1-己醇�

10.45

4.448

9

3-Hexen-1-ol3-己烯-1-醇)

10.955

16.367

10

3-Hexen-1-ol formate(甲�-3-己烯-1-醇酯�

11.105

0.099

11

2-Hexen-1-ol2-己烯-1-醇)

11.261

4.799

12

Butanoic acid hexyl ester(丁酸己酯)

11.715

0.19

13

Methanol- π methyl- π [4-methyl-3-pentenyl] oxirane
(甲�甲基 [4-甲基-3-戊烯�]�(huán)氧乙烷)

11.882

1.892

14

1-Heptanol1-庚醇�

12.03

0.892

15

5-Ethenyltetrahydro-π π 5-trimethyl-2-furanmethanol
5-乙基四氫ππ5 三甲�-2-呋喃甲醇�

12.291

7.616

16

Butanoic acid-2-hexenyl ester(丁�-2-己烯基酯�

12.508

1.964

17

2-Hexenyl valerate2-己烯戊酸�

12.609

0.447

18

3-Hexenyl-π methylbutyrateπ甲基丁酸-3-己烯酯)

12.713

0.084

19

Dodecanal(十二烷�

12.886

0.13

20

Benzaldehyde(苯甲醛�

12.972

0.25

21

3,7-Dimethyl-1,6-octadien-3-ol3,7-二甲�-1,6-辛二�-3-醇)

13.322

9.771

22

1-Octanol1-辛醇�

13.45

0.524

23

5-Ethyl-2(5H)-furanone5-甲基-2(5H)-呋喃酮)

13.911

0.447

24

1-Nonanol1-壬醇�

14.748

0.555

25

Hexanoic acid, 3-hexenyl ester,(己�, 3-己烯基酯�

14.907

2.009

26

Oxalic acid, 4-chlorophenyl octadecyl ester
(草�, 4-氯苯基十八烷基酯�

15.008

0.809

27

Hexanoic acid, 2-hexenyl ester(己�, 2-己烯基酯�

15.065

1.069

28

Geranyl isovalerate(異戊酸香葉酯)

15.216

0.095

29

Heptacosane(二十七烷)

15.38

0.136

30

Trifluoroacetate-3-hexen-1-ol(三�-3-己烯-1-醇)

15.604

0.626

31

3,7-Dimethyl-2,6-octadienal 3,7-二甲�-2,6-辛二烯醛�

15.663

0.829

32

Methyl salicylate(水楊酸甲酯�

16.134

5.582

33

2,6,10-Trimethyl-tetradecane2,6,10-三甲基十四烷�

16.359

0.525

34

Ethyl 3-(3-pyridyl)prop-2-enoate3-(3-吡啶�)丙烯酸乙酯)

16.436

0.276

35

2-Methyl-1-hexadecanol2-甲基-1-十六醇)

16.642

0.111

36

3,7-Dimethyl-2,6-octadien-1-ol3,7-二甲�-2,6-辛二�-1-醇)

16.83

1.67

37

Benzyl alcohol(苯甲醇�

17.091

0.415

38

Heptacosane(二十七烷)

17.343

0.117

39

Phenylethyl alcohol(苯乙醇�

17.491

0.352

40

Octadecane(十八烷�

17.57

0.725

41

[5,9-Dimethyl-1-(3-phenyl-oxiran-2-yl)-deca-4,8-dienylidene]-(2-phenyl-aziridin-1-yl)-amine[5,9-二甲�-1-(3-苯基�(huán)氧乙�-2-)-deca-4,8-亞芐�] –(2-苯基-吡啶-1-)-胺)

17.903

0.145

42

Valeric acid, 4-tridecyl ester(戊�, 4-十三烷基酯)

18.02

0.392

43

[5,9-Dimethyl-1-(3-phenyl-oxiran-2-yl)-deca-4,8-dienylidene]-(2-phenyl-aziridin-1-yl)-amine[5,9-二甲�-1-(3-苯基�(huán)氧乙�-2-)-deca-4,8-亞芐�] – (2-苯基-吡啶-1-)-胺)

18.322

0.155

44

14-Octadecenal14-十八烯)

18.685

0.417

45

2-Methyl-1-hexadecanol2-甲基-1-十六醇)

18.95

0.278

46

Heptacosane(二十七烷)

19.734

0.528

47

2-Bromo-octadecanal2--十八烷)

19.901

0.118

48

14-[4-(1,1,3,3-Tetramethylbutyl)phenoxy-3,6,9,12-tetraoxatetradecan-1-ol 14-[4-(1,1,3,3-四甲基丁�)苯氧�-3,6,9,12-四氧雜十四碳�-1-醇)

20.695

0.257

49

1,2-Benzenedicarboxylic acid, butyl octyl ester
1,2-苯二甲酸丁酯辛酯�

23.667

0.529

 

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