Argon and nitrogen cold plasma effects on wheat germ lipolytic enzymes: Comparison to thermal treatment

Haniye Tolouie, Mohammad Amin Mohammadifar, Hamid Ghomi, Maryam Hashemi*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The effects of argon and nitrogen cold plasma treatments on the lipolytic enzymes activity in wheat germ were investigated. Using argon as plasma gas, the residual activity of lipase and lipoxygenase decreased to 42.50% and 87.72%, respectively after 30 min. Switching plasma input gas to nitrogen, the residual activities of lipase and lipoxygenase after the same time of atmospheric cold plasma (ACP) treatment were 77.50% and 92.52%, respectively. The antioxidant potential and phenolic compounds show no significant difference during ACP duration. However, the remaining activities of lipase and lipoxygenase after 30 min steam autoclaving were 6.25% and 18.60%, respectively. Also, the antioxidant activity and total phenolic content reduced by 14.70% and 30.80%, respectively. In brief, the ACP treatment efficiency was function of the input gas and the treatment time. The presented results about the input gas impacts would be useful in industrial development of ACP application for wheat germ stabilization.

Original languageEnglish
Article number128974
JournalFood Chemistry
Volume346
Number of pages8
ISSN0308-8146
DOIs
Publication statusPublished - 2020

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