freshness preservation (of food)
Technical and commercial term for keeping food fresh, often used in packaging, logistics, and food technology.
This packaging excels at preserving freshness.
We deliver it refrigerated to maintain freshness.
鮮度 means 'freshness' as a quality, while 鮮度保持 refers to the act or technology of preserving that freshness.
保存 is general 'preservation' or 'storage', whereas 鮮度保持 specifically targets maintaining freshness, especially of food.
freshness-preserving agent
Compound of 鮮度 (freshness) and 保持 (maintenance, preservation). A straightforward technical term.