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© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

Pineapple aroma is characterized by several esters, which confers its fresh and fruity aroma. However, high concentrations of methyl hexanoate and thioesters bring an undesired pungently sweet aroma and sulfurous notes to pineapple juice. This study investigates the chemical effects of cold plasma on the aroma compounds and descriptors of pineapple juice, evaluating the effects of plasma on its esters and thioesters. Dielectric barrier discharge plasma was applied to pineapple juice, varying the excitation frequency (50 to 1000 Hz) and processing time (10 to 20 min) at constant voltage (20 kV). Plasma treatment induced successive demethylation of esters and the conversion of methyl esters into ethyl esters. Thioesters showed to be more stable under plasma treatment. Proper setting of plasma operating conditions enabled an improvement in the fresh and fruity descriptors of pineapple juice, a reduction of its undesired pungently sweet aroma, but an increase in the influence of sulfurous descriptors. Plasma treatment at 50 Hz reduced the undesired aromas of pineapple while maintaining its fresh and fruity descriptors.

Details

Title
Effect of Atmospheric Cold Plasma on the Aroma of Pineapple Juice: Improving Fresh and Fruity Notes and Reducing Undesired Pungent and Sulfurous Aromas
Author
Porto, Elaine C M 1 ; de Brito, Edy S 2   VIAFID ORCID Logo  ; Rodrigues, Sueli 1 ; Fernandes, Fabiano A N 3   VIAFID ORCID Logo 

 Departamento de Engenharia de Alimentos, Universidade Federal do Ceará, Campus do Pici Bloco 758, Fortaleza 60440-900, CE, Brazil; [email protected] (E.C.M.P.); [email protected] (S.R.) 
 Embrapa Agroindústria Tropical, R. Dra. Sara Mesquita, 2270, Fortaleza 60511-110, CE, Brazil; [email protected] 
 Departamento de Engenharia Química, Universidade Federal do Ceará, Campus do Pici Bloco 709, Fortaleza 60440-900, CE, Brazil 
First page
2303
Publication year
2023
Publication date
2023
Publisher
MDPI AG
e-ISSN
22279717
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2857449001
Copyright
© 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.