Unverified80% confidenceCautionTime unknown
泡发过久或颜色异常翠绿的海带不要买——正常干海带泡发后为黄绿至墨绿，若鲜艳翠绿可能经硫酸铜/碱着色处理；泡发水呈明显绿色需警惕
1
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80%
Confidence
Long-term
Relevance
-
First Seen
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Unverified颜色异常翠绿、鲜亮的干海带/海白菜可能经过染色或硫处理，天然干海带应为深褐绿至墨绿色、泡发后呈墨绿或黄绿，泡发水明显染绿的应警惕人工色素90% similarUnverified去壳南瓜子仁若表面发绿是正常现象（叶绿素/前花青素），并非霉变；但若出现白毛、结块、异味则为受潮霉变，必须丢弃81% similarUnverified菊花颜色异常鲜亮统一、发白或带绿荧光感需警惕硫磺熏制，正常晒制/烘干的菊花偏自然黄褐、花瓣略有卷曲；闻起来有刺鼻酸味的不要买80% similarUnverified果仁颜色偏黄绿为新鲜（叶绿素与花青素含量高、油脂新鲜），果仁发白发暗、无绿色说明存放过久或品质差，不建议购买80% similarUnverified开袋后有明显海腥味刺鼻或颜色异常翠绿的，多为添加人工色素和香精调制；天然海藻豆腐呈淡青灰或浅绿，气味清淡80% similar
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