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Table 3 Recovery of glucose and xylose after pretreatment of bagasse samples at different temperature and time

From: Impact of cultivar selection and process optimization on ethanol yield from different varieties of sugarcane

 

Conditions

  

Glucose (%)

Xylose (%)

 

Temp

Time

  

WIS

Liquor

WIS

Liquor

Run

(˚C)

(min)

pHa

logR 0

55

70

74

120

55

70

74

120

55

70

74

120

55

70

74

120

1

180(185)

5(4)

2.11(2.20)

0.94(0.91)

95

96

97.3

97

4.9

3.9

2.5

2.5

11

10

11

11

78.5

67

66.8

65.9

2

200(205)

5(4)

2.05(2.11)

1.59(1.58)

91

90

93.9

95

8.2

9.1

5.5

4.6

7.2

5.1

4.5

5.9

71.7

73

74.7

65.7

3

180(185)

15(14)

2.07(2.09)

1.46(1.56)

92

90

94

93

7.3

8.5

5.5

5.7

6.4

8.2

4.1

8.6

79.2

72

65.7

60.6

4

200(205)

15(14)

2.06(2.08)

2.06(2.16)

89

86

88.8

90

10.6

11

8.2

7.7

3.4

5.1

3.7

4.1

61.8

53

54.1

36.4

5

176(181)

10(9)

2.13(2.14)

1.10(1.20)

95

95

96.9

97

3.8

4

2.7

3.2

5.3

15

14

13

66.7

76

69.4

74.4

6

204(209)

10(9)

2.08(2.10)

1.98(2.06)

91

86

89.6

93

7.7

12

8.5

5.4

4.9

4.3

3.7

7.2

62.5

58

59.6

46.3

7

190(195)

3(2)

2.06(2.15)

1.07(0.95)

95

95

96.2

97

4

5.8

3.6

2.7

6.8

7.4

8.2

13

84

74

69.4

62.8

8

190(195)

17(16)

2.06(2.08)

1.82(1.92)

89

89

91.3

94

9.6

11

8.1

7

4.2

7.4

4.9

8.1

67.2

71

67.8

47.5

9

190(195)

10(9)

2.08(2.12)

1.57(1.63)

90

91

92

93

7.7

9.4

6.1

5.5

4.5

7.8

5.3

8.6

75.4

85

82.6

78.6

10

190(195)

10(9)

2.09(2.10)

1.56(1.65)

93

92

94

95

7.3

8.7

6.6

5.2

4.9

7

5.7

7.7

78.2

83

77.3

75.9

11

190(195)

10(9)

2.07(2.11)

1.58(1.64)

93

89

91.6

95

7.5

9.8

6.5

5

4.9

7.4

5.7

7.2

78.4

79

77.1

74

  1. Values are expressed as the percentage of theoretical value (content in raw material). The acid concentration at all pretreatment conditions was kept constant at 0.5% (w/w).
  2. The conditions and values in parenthesis were employed for bagasse 120 to have a better response to pretreatment.
  3. aThe values showing the pH for varieties 55, 70 and 74 is the average of the three substrates.
  4. WIS, water insoluble solid; Temp, temperature; and logR0, combined severity factor.