Automatic periodical sulfur dioxide fumigation in combination with CO2‐enriched atmosphere extends the storage life of durian (Durio zibethinus Murr.)
2022
Ran, Yalin | Zheng, Yanli | Du, Meijun | Jia, Xiaoyu | Wang, Xiaodong | Wang, Luyin | Li, Xihong
The postharvest decay of durian (Durio zibethinus Murr.) increases rapidly when the storage time is extended, which seriously limits the commercial value. In this research, the effects of appropriate periodical SO₂ fumigation and different CO₂‐enriched atmospheres (3% O₂ + 10%–13%, 14%–17%, or 18%–21% CO₂) on the storage quality of durian stored at 14°C were investigated. Results showed that SO₂ fumigation in combination with enriched CO₂ atmosphere (14%–17%) could maintain firmness (16.37 N), retard weight loss (10.24%), reduce decay rate (11%), and inhibit the production of ethylene (9.2 μl kg⁻¹ h⁻¹) and malondialdehyde (12.10 μmol/g). Moreover, the treatment consolidated the disease resistance of durian by, first, enhancing peroxidase (POD) and catalase (CAT) activities, and, second, by restraining polyphenol oxidase (PPO) activity, which helped to maintain the cell integrity structures. More importantly, this treatment retained a high sensory score (41.35) and extended the storage life up to 60 days. Therefore, a combination of 1,500 mg/L SO₂ fumigation and controlled atmosphere storage (3% O₂ + 14%–17% CO₂) was the more effective method to delay maturation and senescence and improve the storage quality of durian. NOVELTY IMPACT STATEMENT: Durian (Durio zibethinus Murr.) is susceptible to rapid water loss, softening, browning, and chemical deterioration after harvest, which greatly limits the storage quality and commercial value of fruits. Automatic periodical SO₂ fumigation of 1,500 mg/L in conjunction with CO₂‐enriched controlled atmosphere storage (3% O₂ + 14%–17% CO₂) will be a promising postharvest strategy to reduce decay and extend the storage life of fresh durian.
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