Atmospheric cold plasma effect on quality attributes of banana slices: Its potential use in blanching process. (March 2022)

• Record Type: Journal Article
• Authors: Khoshkalam Pour, Ali; Khorram, Sirous; Ehsani, Ali; Ostadrahimi, Alireza; Ghasempour, Zahra
• Is Part Of: Innovative food science & emerging technologies. Volume 76(2022)
• Publication Date: 2022-03
• Subjects: Dielectric barrier plasma -- Enzyme activity -- DPPH scavenging -- Response surface methodology; Food -- Biotechnology -- Periodicals; Food industry and trade -- Technological innovations -- Periodicals; Aliments -- Biotechnologie -- Périodiques; Food -- Biotechnology; Periodicals; Electronic journals; 664.005
• DOI: 10.1016/j.ifset.2022.102945
• Languages: English
• ISSNs: 1466-8564

Abstract

Abstract: Polyphenol oxidase (PPO) and peroxidase (POD), responsible for enzymatic browning, cause technological and also financial losses for producers. Through central composite design, the effects of time duration and voltage magnitude using cold atmospheric plasma (CP) were investigated on enzyme activity of banana slices. During CP treatment, PPO and POD activity decreased 70% and 100%, respectively. Total phenol and flavonoid content of the samples increased, particularly as a result of exposure time; which contributed to more than 50% increment in antioxidant activity. Optimum conditions for CP treatment was obtained at voltage 6.9 kV for 46 s. Vitamin B6 content was higher for optimal sample than untreated one and reached 0.8 μg/100 g. Slight decrease in hardness of treated sample was obtained which was in accordance with porous structure obtained through morphology testing. Considering efficient effect on enzyme inactivation and mild effect on physico-chemical properties, CP can be a promising non-thermal process for fresh fruits blanching. Highlights: Cold plasma revealed remarkable effect on polyphenol oxidase and peroxidase inactivation. Nutritional quality improved in terms of total phenol and flavonoids contents and also vitamin B6. Effect of plasma exposure time was more pronounced in comparison with voltage.