Alteration of Phenolic and Volatile Compounds of Tea Leaf Extract by Tyrosinase and β-Glucosidase during Preparation of Ready-to-Drink Tea on Farm
Table 4
The volatile compound of the treated and untreated tea extract with β-glucosidase.
Compound
CAS
RI
RI
LRI
Concentration (ppb)
Control
Tyrosinase
Tyrosinase-β-glucosidase
Linalool
78-70-6
1099
1101
1104
cis-Linalool oxide
5989-33-3
1069
1078
1076
Linalool oxide
14049-11-7
1071
1072
1179
β-Damascenone
23726-93-4
1386
1385
1388
—
—
Methyl salicylate
119-36-8
1193
1235
1266
Values are expressed as of three replication. RI: RI of references using the DB-5MS column [16]; RI: RI of references using the HP-5MS column [22]; LRI: retention indices calculated in the experiment.