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Table 2 Oversight of the sensory evaluation and proteolysis results (aMilk samples with off-flavors have values within the range indicated by Kramer and are thus significantly different from the milk samples with values outside that range)

From: Destabilization and off-flavors generated by Pseudomonas proteases during or after UHT-processing of milk

Pseudomonas culture

UHT production date

Time stored at 37 °C after UHT production / and time of sensory evaluation

Dilution with blanc milk

off-flavor

Sensorial evaluation method described in this paper

Rank test to Kramer

Proteolysis (μmolglycine equivalents / ml)

value ± sd

milk sample rank sum

(lowest - highest) insignificant rank suma

# sensorial evaluators

Blanc

Blanc

Blanc

Blanc

02/12/2010 (t3)

02/12/2010 (t3)

03/12/2010 (t4)

03/12/2010 (t4)

15 days

11 days

13 days

10 days

Undiluted

Undiluted

Undiluted

Undiluted

NO

NO

NO

NO

5

5

5

5

33

18

24Z34a / 20Z34b / 26W52b

17

(39–56)

(33–47)

(35–50) Z34a / (33–47)Z34b / (35–50)W52d

(33–47)

19

16

17Z34a / 16Z34b / 17W52d

16

1,01

0,96

1,04

0,92

Z34a

03/12/2010 (t4)

13 days

1:3

2:3

Undiluted

NO

NO

YES

4,69 ± 1,72

4.62 ± 1,68

3,43 ± 1,53

25

26

35

(35–50)

(35–50)

(35–50)

17

17

17

1,18

1,39

1,73

W12b

02/12/2010 (t3)

11 days

1:3

2:3

Undiluted

NO

NO

YES

4,37 ± 1,29

4,55 ± 1,40

3,00 ± 1,88

22

22

35

(33–47)

(33–47)

(33–47)

16

16

16

1,35

1,58

1,84

Z34b

03/12/2010 (t4)

13 days

1:3

2:3

Undiluted

NO

YES

YES

4,39 ± 1,13

3,89 ± 1,13

2,16 ± 1,24

29

37

53

(33–47)

(33–47)

(33–47)

16

16

16

1,42

1,78

2,24

W2a

03/12/2010 (t4)

10 days

1:3

2:3

Undiluted

NO

YES

YES

4,1 ± 1,38

3,12 ± 1,79

1,64 ± 0,75

23

38

47

(33–47)

(33–47)

(33–47)

16

16

16

1,58

2,04

2,48

fragi Z41b

02/12/2010 (t3)

15 days

1:3

2:3

Undiluted

NO

YES

YES

4,82 ± 0,82

3,61 ± 1,35

3,38 ± 1,35

32

41

53

(39–56)

(39–56)

(39–56)

15

15

15

1,06

1,16

1,2

lundensis W52b

03/12/2010 (t4)

13 days

1:3

2:3

Undiluted

NO

YES

YES

4,53 ± 1,54

3,02 ± 1,44

2,78 ± 1,45

29

43

54

(35–50)

(35–50)

(35–50)

17

17

17

1,41

1,81

2,2

  1. a