Journal Pre-proof Magnetic dextrin nanobiomaterial: An organic-inorganic hybrid catalyst for the synthesis of biologically active polyhydroquinoline derivatives by asymmetric Hantzsch reaction Ali Maleki, Fereshte Hassanzadeh-Afruzi, Zahra Varzi, Mir Saeed Esmaeili PII: S0928-4931(19)33139-X DOI: https://doi.org/10.1016/j.msec.2019.110502 Reference: MSC 110502 To appear in: Materials Science & Engineering C Received date: 24 August 2019 Revised date: 23 October 2019 Accepted date: 26 November 2019 Please cite this article as: A. Maleki, F. Hassanzadeh-Afruzi, Z. Varzi, et al., Magnetic dextrin nanobiomaterial: An organic-inorganic hybrid catalyst for the synthesis of biologically active polyhydroquinoline derivatives by asymmetric Hantzsch reaction, Materials Science & Engineering C (2019), https://doi.org/10.1016/j.msec.2019.110502 This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2019 Published by Elsevier.