Unverified85% confidenceFactTime unknown
黑米、紫米真伪可通过冷水浸泡辨别:天然花青素溶出后水呈紫红色且颜色均匀,若掉色为墨黑色浑浊或搓洗后米粒露白心,可能为染色米
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85%
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Long-term
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Unverified黑米认准'黑米'非'紫米':真黑米表皮富含花青素,浸泡水呈紫红色、多次淘洗仍轻微掉色属正常;若泡水立即墨黑或用醋测试不变红,可能是染色劣质米92% similarUnverified真黑米用力搓洗时掉的是暗紫红色水(花青素),若掉黑色或蓝黑色水则可能是染色米,正宗黑米米粒刮开后内芯为白色89% similarUnverified真黑米刮开表皮后米粒内部(胚乳)呈白色或半透明,若内部也发黑则可能是染色米;用手搓少量干米不掉色,浸泡后水呈紫红色而非墨黑色才是天然花青素89% similarUnverified黑米浸泡水应呈紫红色/葡萄酒色(花青素遇水析出且呈酸性偏红),若浸泡水呈现纯黑或蓝黑色说明可能添加了色素88% similarUnverified真黑米刮开表皮后种仁呈白色或黄白色,若种仁也是黑色则可能是染色米;用手搓湿米粒若快速掉大量黑色素(水呈深墨黑色而非淡紫红色)为染色造假87% similar
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