紫色可以是從紅加藍而成，這是無容置疑。499Please respect copyright.ＰＥＮＡＮＡT2m5rZMVjV
但古時候的人又是從甚麼途徑獲取紫色顏料呢?499Please respect copyright.ＰＥＮＡＮＡck5di2srsx
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(圖2）紫色顏料其中的一道渠道，就是從骨螺而來。499Please respect copyright.ＰＥＮＡＮＡZ5Y34KMPKn
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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。499Please respect copyright.ＰＥＮＡＮＡQJI14Lnb3O
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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。499Please respect copyright.ＰＥＮＡＮＡ9kU1QZbdpB
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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。499Please respect copyright.ＰＥＮＡＮＡyfCmrF27Bh
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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。499Please respect copyright.ＰＥＮＡＮＡR4g5cpGrsO
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延伸閱讀:深入淺出–以化學角度審視吶喊名畫499Please respect copyright.ＰＥＮＡＮＡSz3rvu2VE4
- 分享自 LIHKG 討論區499Please respect copyright.ＰＥＮＡＮＡ78whx5gWPf
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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。499Please respect copyright.ＰＥＮＡＮＡxHlvX09LpC
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Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc499Please respect copyright.ＰＥＮＡＮＡsDdNRtatnv
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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。499Please respect copyright.ＰＥＮＡＮＡImwCaV2YJX
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除非Facebook及IG重開侵侵的account，否則我的IG將不會再作更新，只會寄居本土LIHKG及Penana。499Please respect copyright.ＰＥＮＡＮＡH6pPA5IMtQ
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Ref1:https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0245897#pone.0245897.ref007499Please respect copyright.ＰＥＮＡＮＡwAdeo5Y766
Ref2:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6562550/499Please respect copyright.ＰＥＮＡＮＡzS0xQceAjk
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