title: Polygalacturonase production of Rhizopus sp. MKU 18 using a metal-ion-regulated liquid medium.
authors.affiliation: Department of Bioengineering, Yatsushiro National College of Technology, Yatsushiro 866-8501, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Morita
authors.forename: Yusaku
authors.initials: Y
authors.lastname: Fujio