Capasso, Renato and De Martino, Antonio and Cristinzio, Gennaro (2002) Production, Characterization, and Effects on Tomato of Humic Acid-like Polymerin Metal Derivatives from Olive Oil Mill Waste Waters. [Pubblicazione in rivista scientifica]

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Item Type: Pubblicazione in rivista scientifica
Uncontrolled Keywords: Olea europea; olive oil mill waste waters; polymers; polysaccharides; proteins; melanin; metals; humic acid-like substances; diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS); atomic absorption spectrometry (AAS); Lycopersicon esculentum; phytotoxicity test; bioamendments
Date Deposited: 12 Jan 2009
Last Modified: 30 Apr 2014 19:22
URI: http://www.fedoa.unina.it/id/eprint/522

Abstract

The dark polymeric organic fraction rich in potassium recovered from olive oil mill waste waters (OMWW) and named polymerin and the potassium salified deglycosylated polymerin derivative (KSDpolymerin) were easily transformed into their metal derivatives by saturation with various metals, including Na, Cu, Zn, Mn, Fe, and Al. Saturated metal polymerins were characterized by diffuse reflectance infrared Fourier transform spectroscopy and atomic absorption spectrometry. Tests on tomato plants of the various polymerins showed that only the soluble polymerin, K-SDpolymerin, and the insoluble Mn-SDpolymerin were significantly toxic. The toxic effects of OMWW on tomato at the original concentration and diluted 1:10 were much stronger than those of any polymerin. The possible exploitation of polymerins as bioamendments and/or metal biointegrators as a functon of their phytotoxic effects, their humic acid-like nature, and their richness in macro- and micronutrient metals is also discussed.

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