Research of 9 Storage Factors’ Impacts on Swan Egg Quality by Using Plackett–Burman Design

Thanks to the species characteristics and loose breeding for swans and swan eggs feature high nutritional and commercial values. So it is of great significance to take technical means to prolong the storage period of swan eggs. Adopting the PB experiment, the study makes an analysis on the impacts of some factors on the storage effect, including outer shell film of swan eggs, polyvinyl alcohol (PVA) membrane, coating temperature of PVA membrane, temperature of wind drying, storage temperature, white mineral oil membrane, bran storage, piled storage, and placement (horizontal or vertical). Analytical models show that: as for weight loss, the storage temperature for 5 °C and white mineral oil membrane are key factors; for haugh unit, the storage temperature for 5 °C, temperature of hot air drying for 70 °C, and white mineral oil membrane are the remarkable influencing factors; coating oil membrane, storage temperature, and placement influence the diameter of air chamber. The conclusion of the study provides a certain theoretical bases for properly selecting and effectively using the methods to improve the freshness of eggs in a manufacturing process.