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Production of exo-polygalacturonase (
) and endo-polygalacturonase (
) by Aspergillus niger strain URM 5162 in fixed bed reactor. (a) immobilised cells without aeration; (b) immobilised cells with aeration; (c) immobilised cells with aeration and adding pectin; and (d) free cells with aeration. pH variation during the polygalacturonases production (
).
