Growth tolerance of Zygomycetes Mucor indicus in orange peel hydrolysate without detoxification

摘要: The capability of two zygomycetes strains, Mucor indicus and an isolate from tempeh (Rhizopus sp.), to grow on orange peel hydrolysate their tolerance its antimicrobial activity, was investigated. Both fungi, in particular M. indicus, tolerated up 2% d-limonene semi-synthetic media during cultivation shake flasks, under aerobic as well anaerobic conditions. also tested a bioreactor, giving rise varying results the presence limonene. Furthermore, both strains were capable consuming galacturonic acid, main monomer pectin, conditions when no other carbon source present. based 12% (dry w/v) peels, containing at concentration 0.6% (v/v), which microorganism has been reported be able ferment. However, utilised by conditions, resulting production 410 400 mg ethanol/g hexoses 57 75 fungal biomass/g sugars cultivations flasks respectively. Rhizopus sp., however, slow germinate aerobically, neither consistently hydrolysate, used present study demonstrated relatively high resistance compounds they producing ethanol biomass limonene, particularly cultivated with air supply.