Maintaining the postharvest freshness of Allium microdictyon Prokh, a highly perishable wild vegetable rich in bioactive compounds, remains a major challenge due to its susceptibility to ethylene-induced deterioration. This study aimed to develop an eco-friendly and efficient active packaging system using torrefied wood–based ethylene scavengers to extend the shelf life of A. microdictyon. Oak (Quercus variabilis) biomass was torrefied at 255 ℃ to produce porous, carbon-rich scavenger chips, which were integrated into polymer films composed of LDPE, HDPE, PP, and PVC. The ethylene absorption capacity and preservation performance of these composite packaging materials were evaluated over 30 days of storage at 27 ± 2 ℃ and 65 ± 5% relative humidity. The results demonstrated that torrefied wood effectively reduced internal ethylene concentration by over 70% in most polymer matrices, with HDPE + scavenger and LDPE + scavenger films showing the highest adsorption efficiencies. The treated samples exhibited significantly lower weight loss, higher moisture retention, and reduced chlorophyll degradation compared with the control (p < 0.05). Sensory and color analyses confirmed that ethylene scavenger–integrated packaging preserved the freshness and green coloration of A. microdictyon for up to 30 days, whereas control samples deteriorated rapidly. These findings highlight that torrefied wood is a safe and sustainable alternative to chemical absorbers, offering a promising bio-based solution for active packaging applications to enhance postharvest quality and reduce food waste in ethylene-sensitive crops.

Abstract
Introduction
Materials and Methods
    1. Prepared torrefied wood for absorption of ethylenegas
    2. A. microdictyon Prokh packaging material
    3. Selection of A. microdictyon Prokh sample
    4. Storage and packaging of A. microdictyon Prokh
    5. Sensory Evaluation
    6. Determination of Weight Loss Ratio
    7. Moisture content
    8. pH value
    9. Color Evaluation
    10. Determination of Chlorophyll Content
    11. Absorption of ethylene gas
    12. Statistical Analysis
Results and Discussion
    1. Sensory evaluation
    2. Determination of weight loss ratio
    3. Moisture content
    4. pH value
    5. Color evaluation
    6. Determination of chlorophyll content
    7. Absorption of ethylene gas
Acknowledgement
References

• Si Young Ha(Assistant Professor, Department of Environmental Materials Science and Institute of Agriculture of Life Science, Gyeongsang National University, Jinju 52828, Korea)
• Hyeon Cheol Kim(Graduate Student, Department of Environmental Materials Science and Institute of Agriculture of Life Science, Gyeongsang National University, Jinju 52828, Korea)
• Jae Kyung Yang(Professor, Department of Environmental Materials Science and Institute of Agriculture of Life Science, Gyeongsang National University, Jinju 52828, Korea) Corresponding author