The DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material. http://http://dspace.unitus.it:80 2013-05-23T05:01:50Z 2013-05-23T05:01:50Z Sampedro, Inmaculada Cajthaml, Tomáš Marinari, Sara Stazi, Silvia Rita Grego, Stefano Petruccioli, Maurizio Federici, Federico D'Annibale, Alessandro http://hdl.handle.net/2067/1412 2011-06-30T10:49:32Z 2008-12-31T23:00:00Z

Title: Immobilized inocula of white-rot fungi accelerate both detoxification and organic matter transformation in two-phase dry olive-mill residue Authors: Sampedro, Inmaculada; Cajthaml, Tomáš; Marinari, Sara; Stazi, Silvia Rita; Grego, Stefano; Petruccioli, Maurizio; Federici, Federico; D'Annibale, Alessandro Abstract: The potential use for agronomic purposes of dry olive-mill residue (DOR), solid waste from the olive oil two-phase extraction process, might be impaired by its phytotoxicity. Although fungal treatments can detoxify DOR, long times are required for these processes. The objective of this study was to assess whether the addition of immobilized fungal inocula to DOR might improve colonization rates, thus reducing the time necessary for its detoxification and bioconversion. Inocula of Panus tigrinus CBS 577.79 and Phlebia sp. DABAC 9 immobilized on either chopped maize stalks or polyurethane sponge (PS) led to higher removals of both phenols and phytotoxicity from DOR than free inocula after 4 weeks of incubation. Best dephenolization (85%) was with PS-immobilized Phlebia sp., the use of which reduced germinability inhibition of Lepidium sativum and Lactuca sativa by 80 and 71.4%, respectively. Regardless of the type of inoculant, a low degree of humification was obtained.

2008-12-31T23:00:00Z Lagomarsino, Alessandra Marabottini, Rosita Grego, Stefano Stazi, Silvia Rita http://hdl.handle.net/2067/1657 2011-06-28T15:06:23Z 2009-12-31T23:00:00Z

Title: Copper distribution among physical and chemical fractions in a former vineyard soil Authors: Lagomarsino, Alessandra; Marabottini, Rosita; Grego, Stefano; Stazi, Silvia Rita Description: L'articolo è disponibile sul sito dell'editore: www.edizioniplus.it

2009-12-31T23:00:00Z Casa, Raffaele D'Annibale, Alessandro Pieruccetti, Fabio Stazi, Silvia Rita Sermanni Giovannozzi, Giovanni Lo Cascio, Benedetto http://hdl.handle.net/2067/1659 2011-06-30T15:19:05Z 2002-12-31T23:00:00Z

Title: Reduction of the phenolic components in olive-mill wastewater by an enzymatic treatment and its impact on durum wheat (Triticum durum Desf.) germinability Authors: Casa, Raffaele; D'Annibale, Alessandro; Pieruccetti, Fabio; Stazi, Silvia Rita; Sermanni Giovannozzi, Giovanni; Lo Cascio, Benedetto Abstract: Olive-mill wastewater (OMW), an effluent of olive oil extraction process, is annually produced in huge amounts in olive growing areas. An interesting option for its disposal is the spreading on agricultural land, pro- vided that phytotoxic effects are neutralized. The objective of the present investigation was to evaluate the potential of an enzyme-based treatment in removing OMW phytotoxicity. To this aim, germinability experiments on durum wheat (Triticum durum Desf. cv. Duilio) were conducted in the presence of different dilutions of raw or enzyme-treated OMW. OMWtreatment with laccase resulted in a 65% and 86% reduction in total phenols and ortho-diphenols respectively, due their polymerization as revealed by size-exclusion chromatography. Raw OMW exerted a significant concentration-dependent inhibition on the germinability of durum wheat seeds which was evident up to a dilution rate of 1:8. When the effluent was treated with a fungal laccase, germinability was increased by 57% at a 1:8 dilution and by 94% at a 1:2 dilution, as compared to the same dilutions using untreated OMW. The treatment with laccase also decreased the mean germination time by about 1 day as compared to untreated controls. These results show that germinability inhibition due to OMW can be reduced effectively using fungal laccase, suggesting that phenols are the main determinants of its phytotoxicity. Description: L'articolo é disponibile sul sito dell'editore: http://www.sciencedirect.com

2002-12-31T23:00:00Z