... 103,000 in the steaming-extracted polymer (1), the band corresponding to 38,000 in the NaOH-extracted polymer (2), the band corresponding to 24,700 in the SDS-extracted polymer (3), and the bands ... contrast, the steaming-extracted polymer included a larger amount of saccharides (24.6%) compared to the other methods. The SDS-extracted polymer included a small amount of material other than ... washing extraction the lowest (13.3 mg/g, dry sludge). Protein was the main component of all the polymers, although the content varied significantly with the polymer. The NaOH- and SDS-extracted polymers...