No abstract

Allium mongolicum Regel is a high‐quality plant resource but highly perishable with short shelf life of 1–2 days. Changes in postharvest quality and microbiological population on A. mongolicum regulated by poly (butylene adipate‐co‐terephthalate)/poly (butylene succinate), poly (butylene adipate‐co‐terephthalate)/polycaprolactone, poly (butylene adipate‐co‐terephthalate)/poly (L‐lactide) and poly (butylene adipate‐co‐terephthalate)/polypropylene MAP were investigated during near‐freezing storage. The results showed all four MAPs could reduce the respiration rate, water loss, decay rate and malondialdehyde content significantly and maintain the morphology, color and typical flavor of A. mongolicum effectively which also had high level acceptable commercial score as well as ascorbic acid and chlorophyll contents. However, the preservation effect packed with poly (butylene adipate‐co‐terephthalate)/polypropylene was significantly better than the other three films in which it could establish an optimal atmospheric condition with O2 concentration of 0.34%–0.53% and CO2 concentration of 4.53%–6.13% and the A. mongolicum had the highest level of postharvest quality, the lowest level of physiological metabolism and surface microorganisms, and its shelf life could reach 18 days. Practical applications Allium mongolicum Regel has delicious taste, high nutritional value, and bioactive ingredients good for human health but with short shelf life which is a great challenge to the storage and sales. Therefore, maintaining postharvest quality and extending shelf life are significant to the industry development for A. mongolicum. However, studies on its preservation are not available. Modified atmosphere packaging is a cheap, safe and effective method to keep produce fresh. In this study, the shelf life of A. mongolicum was extended significantly in the treatment of poly (butylene adipate‐co‐terephthalate)/polypropylene MAP. It provided an effective solution for the storage problem and had great potential in industry for A. mongolicum. Furthermore, it provided a theoretical basis for the storage and industry development by studying the correlations of the O2, CO2 and water vapor transmission rate of package film, O2, CO2 concentration in package and postharvest physiology and quality of A. mongolicum during storage.

No abstract

No abstract