Amylases having unusually high molecular weights (M(r), >150,000) were found in culture supernatants of an environmentally derived microbial mixed culture selected for its ability to utilize starch-containing plastic films as sole carbon sources. The mixed culture produced amylases active at pHs 5.5 and 8.0.
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Burgess‐Cassler et al. (1991) studied this question.
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