What question did this study set out to answer?

The research aims to evaluate how low-pressure cold plasma affects the physical, biochemical, antioxidant properties, and microbial load of dried chili pods.

February 6, 2026

Impact of Low‐Pressure Cold Plasma Treatments on the Physical, Biochemical, Antioxidant Activity, and Microbial Load of Dried Chili Pods ( Capsicum annuum L.)

Key Points

The research aims to evaluate how low-pressure cold plasma affects the physical, biochemical, antioxidant properties, and microbial load of dried chili pods.
Applied low-pressure cold plasma treatments at varying power (0, 10, 20 W) and time (5, 10, 15 min)
Conducted analyses of moisture content, volatile oils, and bioactive compounds
Performed statistical analyses to assess interactions of treatment conditions
Measured microbial load pre- and post-treatment.
Moisture content decreased from 9.3% to 5.9%
Capsanthin levels dropped significantly from 8.75 to 1.24 g/kg
Antioxidant activity remained stable at around 46.7%–49.7%
Microbial load reduced by over 2.5 log, enhancing food safety
Significant loss of pungency, with SHU values falling from 3923 to 2649.

Abstract

This study investigates the impact of low‐pressure cold plasma (LPCP) on the properties of dried chili pods ( Capsicum annuum L.). LPCPs were applied at 0, 10, and 20 W for 5, 10, and 15 min, including a control group (P5M0W‐P15M0W), with plasma energy inputs of 3.0–18.0 kJ, and all analyses were completed within 48h after treatment. Statistical analysis revealed significant effects of power, time, and their interaction ( p 2.5 log (4.54 to 1.93 log(CFU g −1 )). Regression confirmed strong dose–response relationships for bioactive degradation and microbial inactivation ( R 2 = 0.725–0.988). LPCP improved microbial safety of dried chili pods, but caused significant losses in color and pungency. Further optimization is needed to balance microbial inactivation with quality retention.

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Cite This Study

Wijaya et al. (Wed,) studied this question.

synapsesocial.com/papers/698586498f7c464f2300a528 https://doi.org/https://doi.org/10.1002/nzc2.70062

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