Detail publikace

Microwave Plasma Torch Generated in Argon for Small Berries Surface Treatment

BOGDANOV, T. TSONEV, I. MARINOVA, P. BENOVA, E. RUSANOV, K. RUSANOVA, M. ATANASSOV, I. KOZÁKOVÁ, Z. KRČMA, F.

Originální název

Microwave Plasma Torch Generated in Argon for Small Berries Surface Treatment

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Demand for food quality and extended freshness without the use of harmful chemicals has become a major topic over the last decade. New technologies are using UV light, strong electric field, ozone and other reactive agents to decontaminate food surfaces. The low-power non-equilibrium (cold) atmospheric pressure operating plasmas effectively combines all the qualities mentioned above and thus, due to their synergetic influence, promising results in fruit surface decontamination can be obtained. The present paper focuses on the applicability of the recently developed microwave surface wave sustained plasma torch for the treatment of selected small fruit. Optical emission spectroscopy is used for the determination of plasma active particles (radicals, UV light) and plasma parameters during the fruit treatment. The infrared camera images confirm low and fully applicable heating of the treated surface that ensures no fruit quality changes. The detailed study shows that the efficiency of the microbial decontamination of selected fruits naturally contaminated by microorganisms is strongly dependent on the fruit surface shape. The decontamination of the rough strawberry surface seems inefficient using the current configuration, but for smooth berries promising results were obtained. Finally, antioxidant activity measurements demonstrate no changes due to plasma treatment. The results confirm that the MW surface wave sustained discharge is applicable to fruit surface decontamination.

Klíčová slova

microwave discharge; surface wave sustained discharge; atmospheric pressure plasma torch; low-temperature plasma; plasma diagnostics; active particles’ distribution; biomedical plasma applications; food treatment and sterilization

Autoři

BOGDANOV, T.; TSONEV, I.; MARINOVA, P.; BENOVA, E.; RUSANOV, K.; RUSANOVA, M.; ATANASSOV, I.; KOZÁKOVÁ, Z.; KRČMA, F.

Vydáno

10. 10. 2018

Nakladatel

MDPI

ISSN

2076-3417

Periodikum

Applied Sciences - Basel

Ročník

8

Číslo

10

Stát

Švýcarská konfederace

Strany od

1870-1

Strany do

1870-13

Strany počet

13

URL

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