Unverified83% confidenceDecision RuleTime unknown
常温保存的盒装豆腐（如内酯豆腐）多经UHT超高温灭菌，保质期可达3-6个月；冷藏水浸豆腐保质期通常仅3-7天，购买时优先看是否需冷藏而非只看日期长短
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Long-term
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Unverified冷藏盒装豆腐保质期一般3-7天，若标注保质期超过15天甚至常温可存放，说明添加了防腐剂或经过高温灭菌（灭菌豆腐口感变绵、豆香流失）96% similarUnverified盒装内酯豆腐（超高温灭菌+无菌包装）常温可存放数月，但开封后须冷藏并当天食用；散装现做豆腐冷藏保质期仅1-2天，购买后应尽快烹饪，泡在清水中冷藏并每日换水可延长1天95% similarUnverified常温盒装豆腐（无菌利乐包）保质期可达6-9个月但开封后须冷藏48小时内食用；生鲜散装豆腐冷藏仅1-2天，购买当天食用最佳94% similarUnverified含水量越高的豆腐越易变质：内酯豆腐冷藏保质期通常仅3-7天，散装现做老豆腐夏季当天吃完，盒装充氮或无菌包装豆腐可达15-30天。保质期超过45天的常温豆腐多为高温灭菌，风味和口感明显下降94% similarUnverified盒装豆腐的保质期与工艺挂钩：巴氏杀菌冷藏豆腐保质期约7-15天需0-4℃冷藏；高温灭菌（UHT）常温盒装豆腐可存3-6个月免冷藏，但豆香和口感略逊于冷藏鲜豆腐93% similar
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