614
GC CHROMATOGRAMS |
FOODS, FLAVORS & FRAGRANCES
Chi ral Separat ions
Apple Juice with Standards
Rt®-
β
DEXse
1
2
3
4
min.
8
10
12
14
Column:
Rt
®
-
β
DEXse, 30m, 0.32mm ID, 0.25µm (cat.# 13106)
Inj.:
1.0µL split injection
On-column conc.
(standards):
~50ng
Oven temp.:
40°C (hold 1 min.) to 220°C @ 2°C/min.
Inj./det. temp.: 220°C
Carrier gas:
hydrogen
Linear velocity: 80cm/sec.
1. (R)-ethyl 2-methylbutyrate
2. (S)-ethyl 2-methylbutyrate
3. (R)-2-methylbutyrate
4. (S)-2-methylbutyrate
GC_FF00157
Apple Juice
Rt®-
β
DEXse
2
3
min.
8
10
12
14
GC_FF00158
Grape Juice Extract
Rt®-
γ
DEXsa
1. methyl (S)-(+)-3-hydroxybutyrate
2. methyl (R)-(+)-3-hydroxybutyrate
3. ethyl (S)-(+)-3-hydroxybutyrate
4. ethyl (R)-(+)-3-hydroxybutyrate
Column:
Rt
®
-
γ
DEXsa, 30m, 0.32mm ID, 0.25µm (cat.# 13112)
Inj.:
1.0µL split injection
On-column conc.: ~150ng/enantiomer
Oven temp.:
40°C (hold 1 min.) to 200°C @ 2°C/min.
Inj./det. temp.:
220°C/230°C
Carrier gas:
hydrogen
Linear velocity:
80cm/sec. set @ 40°C
Split ratio:
25:1
min. 20
22
24
26
28
1
2
4
3
GC_FF00159
Bergamot Flavor
Rt®-
β
DEXse
Column:
Rt
®
-
β
DEXse, 30m, 0.32mm ID, 0.25µm (cat.# 13106)
Oven temp.:
40°C (hold 1 min.) to 200°C @ 4°C/min.
Carrier gas:
helium, 60cm/sec. set @ 40°C
Det.:
MS @ 220°C
1. (S)-limonene
2. (R)-limonene
3. (R)-linalool
4. (S)-linalool
5. (R)-linalyl acetate
6. (S)-linalyl acetate
min.
8
13
18
1
2
3
4
5 6
GC_FF00163
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Mar 2011
