科普專欄–薯不揀單 - 三十秒科學–Royal Purple

紫色可以是從紅加藍而成，這是無容置疑。483Please respect copyright.ＰＥＮＡＮＡpPbqslPbyO
但古時候的人又是從甚麼途徑獲取紫色顏料呢?483Please respect copyright.ＰＥＮＡＮＡw0ZInLQG0Q
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(圖2）紫色顏料其中的一道渠道，就是從骨螺而來。483Please respect copyright.ＰＥＮＡＮＡPjOlytKFAn
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顏色的來源當然並非來自骨螺外部，而是來自內部一道名為鰓下腺(Hypobranchial gland)的器官。483Please respect copyright.ＰＥＮＡＮＡ8H5dAt0bit
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提取過程相當複雜，而且顏色最終的光澤將取決於骨螺的新鮮度，平均來說每隻骨螺最終只可提取得到約0.9克的顏料。483Please respect copyright.ＰＥＮＡＮＡwA587BOvid
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（圖3）從以色列南部找出屬於約3000年前(鐵器時代)的紫色羊毛纖維中，找到骨螺鰓下腺器官內含的6-monobromoindigotin和6,6-dibromoindigotin的化學物質，進一步引證從骨螺提取紫色顏料的證據。483Please respect copyright.ＰＥＮＡＮＡtu4AYJwVjk
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據稱，從骨螺而來的紫色染料一律將被命名為True Purple或是Royal Purple，對比其他來自植物或礦物得來的紫色染料，較不容易會褪色。483Please respect copyright.ＰＥＮＡＮＡLYgNnIeSoO
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延伸閱讀:深入淺出–以化學角度審視吶喊名畫483Please respect copyright.ＰＥＮＡＮＡw8CnFdk8dW
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如果想我快啲出文的話，請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark，這對我非常之重要。483Please respect copyright.ＰＥＮＡＮＡ8Xh0M5H8KZ
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同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」，以課金的方式推動我繼續搜羅資料寫文，多謝。483Please respect copyright.ＰＥＮＡＮＡ9paqaGQ4vH
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Ref1:https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0245897#pone.0245897.ref007483Please respect copyright.ＰＥＮＡＮＡ7eIHpuHuXt
Ref2:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6562550/483Please respect copyright.ＰＥＮＡＮＡFxown58Eqj

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