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• W4223442918 abstract "Fucoidan is a bioactive compound of brown seaweed with antioxidant characteristics. This study examined the aftermath of the extraction method on the yield, fucose content, xylose content, sulfate content, total sugar, antioxidant activity, and functional groups of fucoidan from Sargassum hystrix. The brown seaweed was extracted using 4 methods, namely, A (0.1 N HCl, room temperature, 24 h), B (2% CaCl2, 85°C, 4 h), C (85% ethanol, room temperature, 12 h), and D (0.5% EDTA, 70°C, 3 h). The antioxidant activity testing was carried out using the 2,2-diphenyl-1-picrylhydrazyl (DPPH), Ferric-Reducing Antioxidant Power (FRAP), and Hydroxyl Radical Scavenging Activity (HRSA). The yield for methods of A, B, C, and D was <math xmlns=http://www.w3.org/1998/Math/MathML id=M1> <mn>2.46</mn> <mo>±</mo> <mn>0.30</mn> </math> , <math xmlns=http://www.w3.org/1998/Math/MathML id=M2> <mn>0.68</mn> <mo>±</mo> <mn>0.34</mn> </math> , <math xmlns=http://www.w3.org/1998/Math/MathML id=M3> <mn>1.18</mn> <mo>±</mo> <mn>0.15</mn> </math> , and <math xmlns=http://www.w3.org/1998/Math/MathML id=M4> <mn>0.62</mn> <mo>±</mo> <mn>0.25</mn> <mi>%</mi> </math> , with fucose content of <math xmlns=http://www.w3.org/1998/Math/MathML id=M5> <mn>39.97</mn> <mo>±</mo> <mn>4.82</mn> </math> , <math xmlns=http://www.w3.org/1998/Math/MathML id=M6> <mn>26.72</mn> <mo>±</mo> <mn>3.38</mn> </math> , <math xmlns=http://www.w3.org/1998/Math/MathML id=M7> <mn>41.08</mn> <mo>±</mo> <mn>9.49</mn> </math> , and <math xmlns=http://www.w3.org/1998/Math/MathML id=M8> <mn>40.62</mn> <mo>±</mo> <mn>8.59</mn> <mi>%</mi> </math> , xylose content of <math xmlns=http://www.w3.org/1998/Math/MathML id=M9> <mn>8.07</mn> <mo>±</mo> <mn>0.92</mn> </math> , <math xmlns=http://www.w3.org/1998/Math/MathML id=M10> <mn>5.63</mn> <mo>±</mo> <mn>0.40</mn> </math> , <math xmlns=http://www.w3.org/1998/Math/MathML id=M11> <mn>6.80</mn> <mo>±</mo> <mn>0.83</mn> </math> , and <math xmlns=http://www.w3.org/1998/Math/MathML id=M12> <mn>7.83</mn> <mo>±</mo> <mn>1.83</mn> <mi>%</mi> </math> , and the sulfate content of <math xmlns=http://www.w3.org/1998/Math/MathML id=M13> <mn>11.47</mn> <mo>±</mo> <mn>2.20</mn> </math> , <math xmlns=http://www.w3.org/1998/Math/MathML id=M14> <mn>15.31</mn> <mo>±</mo> <mn>2.47</mn> </math> , <math xmlns=http://www.w3.org/1998/Math/MathML id=M15> <mn>30.62</mn> <mo>±</mo> <mn>2.76</mn> </math> , and <math xmlns=http://www.w3.org/1998/Math/MathML id=M16> <mn>27.80</mn> <mo>±</mo> <mn>3.59</mn> <mi>%</mi> </math> . The result indicated the occurrence of a sulfate ester group in the functional group analysis with numerous similarities with the commercial fucoidan. The highest antioxidant activity of fucoidan from S. hystrix was found in method C, which was influenced by sulfate levels. Therefore, the extraction method of fucoidan from S. hystrix affects the characteristics and antioxidant activity." @default.
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• W4223442918 date "2022-04-13" @default.
• W4223442918 modified "2023-10-14" @default.
• W4223442918 title "Characteristics and Antioxidant Activity of Fucoidan from Sargassum hystrix: Effect of Extraction Method" @default.
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• W4223442918 doi "https://doi.org/10.1155/2022/3689724" @default.
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