The present study intends to analyse the superficial decontamination power of gas plasma generated at atmospheric conditions by a Resistive Barrier Discharge (RBD) device. Different atmospheric conditions and treatment times were considered. The plasma oxidation power was assessed by measuring the absorbance associated with the primary and secondary oxidation products of sunflower oil. Moreover, the inactivation of natural microflora and some pathogens on the outer skins of fresh fruit and surface of the shell eggs was investigated. Main results indicated that the treatment time was positively correlated to the primary oxidation products, while the Relative Humidity levels showed to play a role in the production of the secondary ones. The efficiency of plasma treatment to decontaminate both fresh pears and table eggs was highly dependent on the exposure time and RH values.
Resistive barrier discharge device to grenerate gas plasma for food decontamination / Berardinelli A.; Vannini L.; Ragni L.; Guerzoni M.E.; Montanari C.; Cerretani L.;. - STAMPA. - (2011), pp. u.91-u.92. (Intervento presentato al convegno Plasma for bio-decontamination : NATO Science for Peace and Security Programme tenutosi a Jasná, Slovakia nel March 15-18, 2011).
Resistive barrier discharge device to grenerate gas plasma for food decontamination
BERARDINELLI, ANNACHIARA;VANNINI, LUCIA;RAGNI, LUIGI;GUERZONI, MARIA ELISABETTA;MONTANARI, CHIARA;
2011
Abstract
The present study intends to analyse the superficial decontamination power of gas plasma generated at atmospheric conditions by a Resistive Barrier Discharge (RBD) device. Different atmospheric conditions and treatment times were considered. The plasma oxidation power was assessed by measuring the absorbance associated with the primary and secondary oxidation products of sunflower oil. Moreover, the inactivation of natural microflora and some pathogens on the outer skins of fresh fruit and surface of the shell eggs was investigated. Main results indicated that the treatment time was positively correlated to the primary oxidation products, while the Relative Humidity levels showed to play a role in the production of the secondary ones. The efficiency of plasma treatment to decontaminate both fresh pears and table eggs was highly dependent on the exposure time and RH values.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
