Unverified85% confidenceDecision RuleTime unknown
开封后冻干极易吸潮氧化变软失效，应选择小袋独立分装（3-5g/袋）或带干燥剂密封罐装，大袋敞口装开封后1周内用不完的不建议购买
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Unverified独立小包装（充氮/干燥剂）虽单价略高，但开封后不受潮变质，适合办公室、外出携带，大袋散装一旦开封需1-2周内吃完否则易发硬或返潮87% similarUnverified盘香易受潮返味，购买时优先选独立密封小包装或带干燥剂的铁盒装；大袋散装虽便宜但开封后1-2个月内需用完，否则香气挥发变淡且易断86% similarUnverified外出携带优先选独立单片/双片小袋包装，开封后接触空气易受潮变软失去磨牙效果，大袋分装的开封后建议7天内吃完84% similarUnverified小苏打开封后极易吸潮结块并缓慢分解失效，建议选择200-500g小包装或独立分装规格；家庭低频使用买1kg以上大袋会在保质期内失效浪费84% similarUnverified独立小包装（单颗真空）卫生且便携但单价高、塑料垃圾多；家庭大袋分装（多颗一袋）开封后需3天内吃完，否则表面易发黏变质84% similar
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