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Microwave-assisted extraction of polysaccharides from solanum nigrum

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Abstract

The microwave-assisted method was used to extract polysaccharides from solanum nigrum. The optimum experimental parameters, mechanism of the extraction and the effect of microwave-assisted extraction process on the structures of polysaccharides were investigated. The extract was analyzed by the modified phenol-sulfuric acid method at 490 nm. The optimum experimental parameters were obtained by orthogonal experiments as follows: extraction time 15 min, microwave radiation power 455 W and the process ratio of materials mass to solvent volume 1:20. The results show that compared with the conventional reflux extraction, the microwave-assisted extraction has a higher yield in shorter time, with no effect on the finally obtained polysaccharides as seen from the FT-IR spectra. The scanning electron microscopy images reveal that the mechanism of the extraction is related to the structural changes of the plant cells in different extracting conditions.

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Central South University, 410083, Changsha, China

    Chen Xiao-qing (Professor), Liu qin, Jiang xin-yu & Zeng fan

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  1. Chen Xiao-qing
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  2. Liu qin
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  3. Jiang xin-yu
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  4. Zeng fan
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Correspondence to Chen Xiao-qing.

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Chen, Xq., Liu, q., Jiang, xy. et al. Microwave-assisted extraction of polysaccharides from solanum nigrum. J Cent. South Univ. Technol. 12, 556–560 (2005). https://doi.org/10.1007/s11771-005-0122-x

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  • DOI: https://doi.org/10.1007/s11771-005-0122-x

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