1. Microbial pectinolytic enzymes: a review;Jayani;Process Biochem.,2005
2. H.A. Ruíz-Leza, Bioprocess development for pectinase production in solid-state fermentation using lemon peel pomace (in Spanish), Undergraduate Thesis, Food Research Department, School of Chemistry, Universidad Autónoma de Coahuila, Saltillo, Coahuila, Mexico, 2004.
3. Improvement of heat removal in solid-state fermentation tray bioreactors by forces air convection;Figueroa-Montero;J. Chem. Technol. Biotechnol.,2011
4. R.M. Rodríguez-Jasso, Extraction and characterization of mexican lemon pectin by an alternative clean methodology (in Spanish), Undergraduate Thesis, Food Research Department, School of Chemistry, Universidad Autónoma de Coahuila, Saltillo, Coahuila, Mexico, 2003.
5. Effects of particle size on production of citric acid from oil palm empty fruit bunches as new substrate by wild Aspergillus niger;Bari;J. Appl. Sci.,2010