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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