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Table 3 The polysaccharide purity and recovery from A. platensis under different flocculant treatments

From: Production and structural characterization of a new type of polysaccharide from nitrogen-limited Arthrospira platensis cultivated in outdoor industrial-scale open raceway ponds

Method

Dosage (mg L−1)

Polysaccharide purity (%)

Polysaccharide retention rate (%)

Total polysaccharide recovery rate (%)a

Crude extract

 

52.31 ± 1.35

100

86.76 ± 5.57a

Polyferric sulfate

250

62.40 ± 2.56

58.49 ± 1.95

50.75 ± 1.78

 

500

69.76 ± 2.67

63.01 ± 1.15

54.67 ± 1.94

 

750

76.80 ± 3.35

68.42 ± 0.97

59.36 ± 1.69

Polyacrylamide 150

200

53.97 ± 1.27

78.07 ± 2.01

67.73 ± 1.98

Polyacrylamide 170

200

56.31 ± 1.31

79.78 ± 1.57

69.22 ± 1.79

Chitosan

600

60.73 ± 1.36

57.83 ± 1.09

50.17 ± 0.99

 

900

59.25 ± 1.29

56.81 ± 1.21

49.29 ± 0.86

 

1200

56.67 ± 1.29

55.01 ± 0.52

47.73 ± 0.59

ZTC1 + 1

350B + 175A

80.90 ± 1.01

86.73 ± 1.98

75.25 ± 1.31

 

700B + 350A

82.05 ± 0.21

81.14 ± 2.03

70.40 ± 0.66

 

1400B + 700A

83.37 ± 0.14

81.15 ± 2.24

70.70 ± 0.54

ZTC1 + 1 + Sevage (two times)

350B + 175A

98.90 ± 1.01

78.67 ± 2.11

68.25 ± 1.13

  1. aThe total polysaccharide recovery was assessed based on the high-pressure homogenization + HWE process