{'fraction_non_alphanumeric': 0.02576489533011272, 'fraction_numerical': 0.00966183574879227, 'mean_word_length': 5.282828282828283, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Biodegradation of Poly(vinyl alcohol) with High Isotacticity

A bacterium having biodegrading activity with poly(vinyl alcohol) (PVA) was isolated from an activated sludge sample of a textile dyeing factory which deals with PVA. The bacterium was identified as a strain of Pseudomonas sp. and designated strain A-41. The results of the degradation of commercial PVA having atacticity altered triad-isotacticity from 21% to 13%. This suggests that the isotactic sequences in PVA are susceptible to biodegradation preferentially. PVA with high isotacticity was found to be easily degraded in comparison with commercial PVA.