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Superose 12 profiles of EPG/PME extracts solubilized from potato tubers. The eluent was monitored by using a refractive index detector. Bars (A, B, C) indicate fractions that were pooled. The asterisk indicates a large peak attributable to the presence of sample buffer salts that is devoid of pectic material. Arrows, elution time of molecular mass markers (kDa). a, dextrans; b, galacturonic acid.
