Figure 1: TBA values of the frozen and dried shrimp meat during six months of storage
Figure 2: PV values of the frozen and dried shrimp meat during six months of storage
Figure 3: TVN values of the frozen and dried shrimp meat during six months of storage
Figure 4: FFA values of the frozen and dried shrimp meat during six months of storage
Figure 5: Sensory analyses of the frozen and dried shrimp meat during six months of storage
Samples
g/100g dry weight

 

Moisture

Protein

Fat

Ash

Salt

Frozen

*78.18±0.32

17.25±0.35

1.84±0.36

1.99±0.01

-

Dried

6.32±0.07

73.74±1.99

3.03±0.75

7.33±0.01

3.49±0.07

Table 1: Proximate compositions of frozen (at -18 °C) and cabinet-type air dried shrimp meat
*Moisture in frozen samples was based on g/100g fresh weight

Fatty acid composition (%) 
Condition 
Dried
Frozen
Meristic acid

C14:0

0.31b±0.01

0.32b±0.03

Palmitic acid

C16:0

18.49a±0.14

15.18b±0.04

SFA
Stearic acid

C18:0

13.02c±0.01

13.04c±0.08

Arachidic acid

C20:0

0.41b±0.01

0.42b±0.03

Behenic acid

C22:0

1.13b±0.01

1.12b±0.10

Palmitoleic acid

C16:1

1.13b±0.01

1.13b±0.03

MUFA
Oleic acid

C18:1

19.28a±0.01

15.32b±0.01

Gadoleic acid

C20:1

0.59b±0.01

0.56b±0.02

Linoleic acid

C18:2

19.67a±0.01

15.65b±0.19

PUFA
Linolenic acid

C18:3

1.05c±0.01

1.08c±0.07

Eicosapentaenoic acid

C20:5

9.69c±0.01

9.68c±0.26

Docosahexaenoic acid

C22:6

8.51c±0.01

8.48c±0.32

Table 2: Fatty acid compositions of frozen and dried shrimps
Values in the same row followed by a different letter are significantly different (P < 0.05).

Samples

 

 

Storage (Months)

 

 

Parameters

1

3

6

 

L*

49.83a±3.63

45.70a±0.45

41.89a±1.93

Frozen

a*

-1.47aa±0.58

-1.45a±0.46

-0.60a±0.71

 

b*

-3.37a±1.21

-2.70a±0.90

-1.49b±0.13

 

 

 

 

 

 

L*

70.56a±1.27

74.28a±1.00

76.19a±0.54

Dried

a*

15.75a±0.23

14.50b±0.18

13.40c±0.33

 

b*

29.04a±0.57

26.69b±0.12

24.69c±0.12

Table 3: Color parameters of frozen (at -18 °C) and cabinet-type air dried shrimp meats
Values in the same row followed by a different letter are significantly different (P < 0.05).

Microorganism count (cfu/g sample)

 

Condition

Storage time (month)

 

 

1

3

6

Total bacteria

Frozen

‎1×101a

1×101a

3×101a

 

Dried

2×101a

6.3×101a

1.5×102b

 

 

 

 

 

Mold and yeast

Frozen

‎1×101a

‎1×101a

‎1×101a

 

Dried

‎1×101a

‎1×101a

1.1×101a

Table 4:Counting of colonies of the frozen (at -18 °C) and dried shrimp meat
Values in the same row followed by a different letter are significantly different (P < 0.05).