Abstract

CASAS-JUNCO, Paloma Patricia et al. Effect of cold plasma treatment on jackfruit puree: decontamination of Aspergillus niger spores and quality attributes. TIP [online]. 2021, vol.24, e315.  Epub Nov 15, 2021. ISSN 1405-888X.  https://doi.org/10.22201/fesz.23958723e.2021.315.

Jackfruit puree was artificially contaminated with Aspergillus niger spores and then treated with cold plasma (30 W, 1.5 L/min Helium, time 0 to 16 min). After treatment, samples were stored at 25 ºC for 60 days, and microbiological and physicochemical parameters were evaluated. A reduction of 4 log (CFU /g) in Aspergillus niger spores was achieved after 8 min treatment at 30 W and 850 V by Helium gas. A. niger, coliforms and mesophilic aerobic bacteria were completely inhibited up to 8 min of treatment and there was no growth during storage. Treated samples did not show changes in total soluble solids, color or aw during storage. Minimal changes were found in pH and total acidity. There were no significant differences in aromatic profiles for treated and untreated samples. Also, the cold plasma treatment did not alter the sensory properties of jackfruit puree. Cold atmospheric plasma is a promising non-thermal technology to be used in processed fruit products.

Keywords : cold atmospheric plasma; jackfruit puree; Aspergillus niger; quality attributes.

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