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(a) GC chromatogram of EPS obtained from Scenedesmus sp. SB1, indicating the retention time of different sugars. (b) FTIR spectrum of EPS from Scenedesmus sp. SB1 overlaid against standard sugars; A, EPS of the strain; B, glucose; C, maltose; D, polygalacturonic acid; E ribose; F, mannose.
