The core gap of food storage shelf life comes from final moisture content after processing: freeze dryer lyophilization reduces food moisture to below 5%, while hot-air drying finished fruits, meat and herbs usually retain moisture at 12%–20%.
Hot-air dried fruits, jerky and herbal slices contain high residual water, accelerating mold and bacteria reproduction; shelf life only reaches 3–6 months even with natural preservative additives.
Food raw materials processed by bench-top freeze dryer and industrial lyophilizer own ultra-low moisture content, naturally restraining mildew, yeast and bacterial growth; shelf life extends to 18–36 months without any artificial preservatives added.
Vacuum freeze dryer lyophilized food keeps complete loose raw material structure, not easy to absorb moisture quickly under normal sealed warehouse storage, preventing rapid deliquescence, softening and flavor loss.
Hot-air dried food shrinks severely with dense internal tissue, easily absorbing moisture from air during storage, leading to mildew, peculiar odor and deterioration within short storage time.
For export fruit chips, freeze-dried meat snacks, herbal seasonings and long-term reserve instant fast food, lyophilization treatment by freeze drying machine is the most reliable way to extend shelf life for cross-border long-distance transportation.
