Extraction of sulfated agar from Gracilaria lemaneiformis using hydrogen peroxide-assisted enzymatic method.

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ID: 83871
2020
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Abstract
In this study, an eco-friendly extraction method was explored to obtain high sulfate content agar and repair the deficiency of enzymatic extraction by taking full advantage of HO. The sulfate content of EHA (HO-assisted enzymatic extracted agar) reached 3.56 %, which is significantly higher than that of traditional alkali-extracted agar (AA, 1.8 %). Moreover, EHA exhibited lower viscosity (9.4 cP), which improved 26.6 % and 14 % of filtration and gel dehydration rates than EA (enzymatic extracted agar), respectively. Additionally, the physicochemical properties of the agars were evaluated and compared. Among these agars, EHA showed some favorable properties, such as high yield (16.08 %) and low dissolution temperature (88.9 °C). The surface of algae became smoother after treatment with HO due to effective degradation of cellulose. Besides, mass spectrometry analysis revealed that EHA preserved a great amount of sulfate, while thermogravimetric analysis suggested that the thermal stability of EA and EHA both decreased.
Reference Key
chen2020extractioncarbohydrate Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Chen, Huijing;Xiao, Qiong;Weng, Huifen;Zhang, Yonghui;Yang, Qiuming;Xiao, Anfeng;
Journal Carbohydrate polymers
Year 2020
DOI
S0144-8617(19)31458-4
URL
Keywords
agar characterization enzymatic method filtration h(2)o(2)-assisted enzymatic method sulfated agar

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