Extracts Scavenging%
Concentration(µg)
100 200 300
SPS extracted with hot water from Spirulina 30.55*٭ 32.05*٭ 35.36*٭
grown on medium containing 45 ppm nitrogen ±0.020 ±0.025 ±0.03
SPS extracted with hot water from Spirulina 39.73*٭ 40.67*٭ 68.29*٭
grown on medium containing 128 ppm nitrogen ±0.026 ±0.02 ±0.02
SPS extracted with hot water from Spirulina 28.23*٭ 35.69*٭ 44.66*٭
grown on medium containing 293 ppm nitrogen ±0.020 ±0.025 ±0.02
SPS extracted with ethanol from Spirulina 26.37*٭ 28.05*٭ 30.05*٭
grown on medium containing 45 ppm nitrogen ±0.020 ±0.02 ±0.006
SPS extracted with ethanol from Spirulina 25.75*٭ 26.63*٭ 30.16*٭
grown on medium containing 128 ppm nitrogen ±0.020 ±0.025 ±0.025
BHA 88.54 95.22 99.41
  ±0.020 ±0.02 ±0.025
BHT 85.57* 94.76* 98.15*
  ±0.025 ±0.031 ±0.046
Data are means of triplicate ± SD
(*)The mean difference is significant at P≤ 0.05 relative to BHA
(*)The mean difference is significant at P≤ 0.05 relative to BHT
Table 7: Antioxidant activity of sulfated polysaccharides extracts assessed by DPPH.
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