Table 8 Main aroma components of red raspberry wine fermented with Immobilized yeast or free yeast.

From: Study on the technology of brewing red raspberry wine by using new immobilized yeast technology

 

Name

Immobilized yeast content/%

Free yeast content/%

Alcohols

1

Propanol

0.3891

0.3950

2

Isobutanol

2.8885

2.7780

3

Isoamyl alcohol

6.8312

6.0499

4

a-Ionol

0.3762

0.4533

5

Phenylethanol

0.8822

0.9710

Esters

6

Ethyl acetate

2.7084

2.8018

7

Isobutyl acetate

0.1491

0.1330

8

Isoamyl acetate

2.5946

2.0802

9

Ethyl n-hexanoate

0.6160

0.5062

10

Ethyl octanoate

2.0175

1.3425

11

Ethyl sorbate

0.0702

0.0655

12

Ethyl caprate

0.6929

0.3870

13

Ethyl dodecanoate

0.1303

0.0499

14

Ethyl palmitate

0.2113

0.0864

15

Ethyl hex-4-enoate (other isomers)

0.0725

16

Octyl 4-ethylbenzoate

0.0435

17

Ethyl benzoate

0.0913

18

Cyclopropanecarboxylic acid, 2-phenylethyl ester

0.5557

19

E-11 hexadecenoic acid, Ethyl ester

0.0633

20

Ethyl glycolate

0.2444

21

Ethyl hexenoate

0.0649

22

Monoethyl malonate

0.4270

23

Phenethyl acetate

0.4501

24

Methyl caproate

0.0402

Acids

25

Phthalic acid, Isobutyl ester nonyl

0.0405

26

5-Methylanthranilic acid

0.0370

27

Octanoic acid

0.0480

Olefins, Alkanes

28

Diethoxydimethylsilane

0.0355

0.0467

29

Ethyl 9-decene

0.4748

0.3330

30

Dodecane

0.3573

Aldehydes, Ketones

31

Acetaldehyde

0.1037

0.0471

32

α-ionone

0.0632

0.0614

33

β-ionone

0.0893

0.0832

Benzene, Phenols

34

2,4-Di-tert-butylphenol

0.0404

0.0532

Others

35

Diacetyl

0.0907

36

4-O-Methyl-α-D-Mannoside

0.2513

37

1-Acetylguanidine

0.0879

38

Bis(2,4-dimethylamino)pyrimidine

0.4954