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Table 6 Effect of incubation period on lactic acid production using immobilized cells of Enterococcus faecalis-58

From: Isolation, identification, and application of lactic acid-producing bacteria using salted cheese whey substrate and immobilized cells technology

Incubation period (h)

Number of runs

Lactic acid (g/l) (mean ± SD)

Consumed sugar (g/l)

Yield (%)

Efficiency (%)

24

(1–18) 18

7.97 ± 0.47–10 ± 0.4

13.5–14.8

59–68

27–30

36

(1) 1

16.43 ± 0.43

21.58

76

43

(2–10) 9

29.38 ± 0.38–34.5 ± 0.4

35.45–42.59

83–81

71–85

(11–12) 2

36.5 ± 0.3–36.95 ± 0.14

45.65–45.69

80–81

91–91

(13–15) 3

30.62 ± 0.31–32.19 ± 0.19

35.79–37

85–87

72–74

(16–18) 3

34.42 ± 0.3–36.1 ± 0.3

40.39–44.52

85–81

81–89

72

(1–5) 5

36.5 ± 0.4–39.49 ± 0.19

41.9–44.82

87–88

84–90

(6–8) 3

39 ± 0.22–40.19 ± 0.19

44.11–45.33

88–89

88–91

(9–10) 2

40.2 ± 0.2–42.07 ± 0.1

45.36–47.3

89–89

91–95

(11–14) 4

34.59 ± 0.32–35.43 ± 0.23

44.85–41.78

77–88

90–84

(15–18) 4

25.2 ± 0.2–31.75 ± 0.24

34.7–37.2

73–85

69–74

96

(1–9) 9

41.21 ± 0.21–42 ± 0.3

46.17–47

89–89

92–94

(10–16) 7

38.48 ± 0.15–40.95 ± 0.36

43.66–45.91

88–89

87–92

(17–18) 2

32.2 ± 0.2–33.38 ± 0.38

40.8–41.6

79–80

82–83

LSD at 0.05

 

0.633

   
  1. Substrate: salted cheese whey and whey permeate mixture (1:1) with CaCO3 (0.5%), inoculum size (4%)