Unverified90% confidenceDecision RuleTime unknown
活虾看虾体透明度和头部:头胸部(虾黄)饱满不发黑、虾体半透明青亮为新鲜;虾头发黑、虾节间发红发黄说明变质,因虾头富含消化酶最先腐败
1
Sources
90%
Confidence
Long-term
Relevance
-
First Seen
Sources
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Related Claims
Unverified活虾判断新鲜度:虾头与虾身连接紧密、虾壳青透发亮为佳;虾头发黑、发红或与身体松脱说明已不新鲜或死虾久放,黑头是酪氨酸酶氧化的表现92% similarUnverified判断整虾新鲜度:头身连接紧密不脱落、虾体透亮无发黑发红、按压有弹性;虾头发黑是酪氨酸酶氧化早期信号,虾身发红发软则已变质91% similarUnverified海虾看虾头连接紧密度判断新鲜度:新鲜虾头身连接紧实、按压不脱落;虾头发黑发红且头身松动说明已开始腐败(虾头富含消化酶最先变质)89% similarUnverified虾肉饱满度看'虾头与虾身连接紧密度'和'虾壳颜色':新鲜熟制的小龙虾虾尾卷曲紧实(说明下锅前是活虾),虾尾伸直发软的多为死虾加工,肉质松散有腥味。虾头发黑发暗提示不新鲜或生长环境差88% similarUnverified判断虾是否新鲜:虾头与虾身连接紧密不脱落、虾壳发亮呈半透明、虾体呈自然弯曲弧度为佳;若虾头发黑(黑变病)说明已开始氧化变质,虾身松软摊直则不新鲜86% similar
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