Unverified82% confidenceFactTime unknown
冻干（FD）成品含水量通常<5%，风干（AD/热风干燥）含水量约10-15%；含水量越低保质期越长、脆度越好，但冻干成本高价格贵，风干更实惠但营养流失略多
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Unverified干燕窝含水率国家标准要求≤15%，正规商品应标注含水率；发头（泡发膨胀倍数）达6-8倍为优质，低于5倍可能刷胶或含水过高，称重时虚高74% similarUnverified军用/户外冻干食品复水后重量约为干重的3-4倍，一包100g干重复水后约300-400g，需按此估算实际携带饮用水量73% similarUnverifiedFD冻干素食餐脱水后重量约为原料的10-15%，一份复原后约250-350g的成品，干重通常仅30-50g，便携性远优于自热米饭（250-400g）72% similarUnverified'鲜天麻'保鲜期短且水分重（约含水80%），折干率约4-5:1，除非本地或产地直发冷链，否则鲜货性价比和保存都不如干品；家庭常备建议买干品71% similarUnverified主流户外冻干正餐单餐净重约100-160g，复水后总重通常翻2.5-3倍，需注意所需热水量（一般350-500ml），高原缺水线路要把复水用水计入水量规划70% similar
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