Unverified90% confidenceDecision RuleTime unknown
干海带以叶片厚实、色泽墨绿或深褐、表面有白霜(甘露醇析出)为佳,白霜非发霉,泡发后韧而不烂说明褐藻胶含量高
1
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90%
Confidence
Long-term
Relevance
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Unverified选购干海带看表面白霜:适量白色粉末是甘露醇(天然甜味物质)属正常,但发黄、发红或有霉斑是变质,色泽应为墨绿至深褐、叶片完整不碎86% similarUnverified干海带表面的白霜是甘露醇(天然析出物,鲜味来源),不是发霉;发霉是绿色/黑色斑点且有霉味。有白霜的干海带反而是品质好、含糖醇高的表现,不要清洗过度79% similarUnverified干海带表面的白色粉末是甘露醇(正常结晶),并非发霉;而绿色、黑绿或发黏则是变质或漂染,应避免购买78% similarUnverified漂白核桃(用双氧水/漂白粉处理外壳使其洁白)表面壳色异常统一发白、缝合线泛白,天然核桃壳色应为黄褐带自然斑纹,壳色过白反而是加工痕迹,不建议购买78% similarUnverified壳色过分洁白均匀多为漂白处理,天然开心果外壳应为米黄至浅褐色且带斑点;果仁越绿代表成熟度和新鲜度越高,果仁发黄发暗提示存放过久或油脂氧化77% similar
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