Unverified85% confidenceDecision RuleTime unknown
选购饮片时应观察切面颜色淡黄、质地紧密有粉性、嚼之有豆腥味微甜；若切面纤维粗糙发柴、粉性差，说明品质较低或生长年限不足
1
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85%
Confidence
Long-term
Relevance
-
First Seen
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Unverified选购黄芪饮片可通过外观辨优劣：优质黄芪断面'金井玉栏'(外层白、中心黄)、有豆腥气、嚼之微甜有渣感;染色或熏硫黄芪颜色异常鲜黄、有刺激性酸味，应避开80% similarUnverified饮片应切面黄白色至淡棕色、质地柔韧、气味浓香；若切面发黑、有霉味或过于干硬则品质不佳79% similarUnverified选断面显粉性、纤维少的干姜：优质干姜挥发油与姜辣素含量高，断面呈灰白至黄白色且有粉尘感，若断面纤维粗硬、颜色发暗则辛辣力弱78% similarUnverified判断坚果新鲜度小技巧：颜色自然不发暗、无浮油光泽、闻无刺鼻酸味或霉味、口感脆而不'皮'（回软说明受潮氧化）；核桃仁发苦即已酸败应丢弃77% similarUnverified购买后应检查粉体是否松散无结块、色泽为自然乳白（过白可能漂白，发黄可能受潮变质），有明显酸味或霉味说明已变质不可用76% similar
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