科普專欄–薯不揀單 - 三十秒科學–配以紫外光種植生菜

植物的生長全賴光合作用提供能量及資源。在這層面上，所選用的光源亦是一大學問。460Please respect copyright.ＰＥＮＡＮＡtykbEdEMfQ
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（圖2）葉綠素(Chlorophyll)為植物吸收光線的重要位置。460Please respect copyright.ＰＥＮＡＮＡI4UDDghBlJ
利用化學物分離葉綠素的話，共可分為葉綠素a及葉綠素b兩大部份。460Please respect copyright.ＰＥＮＡＮＡr14cOr6bNM
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葉綠素a主要吸收紅光，而葉綠素b則主要吸收藍光。460Please respect copyright.ＰＥＮＡＮＡFAq8E2r7wx
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綠光並沒有有效地被葉綠素吸收的關係，因此葉綠素在我們的眼中呈為綠色。460Please respect copyright.ＰＥＮＡＮＡ3CkaGNexsN
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（圖3）近來有研究發現，配合日照再加上紫外線燈(UVA)的方式種植，生菜的葉綠素、蛋白質、維他命C及糖粉對比單獨日照方式種植更之為高，而硝酸鹽的成份則有所降低。460Please respect copyright.ＰＥＮＡＮＡJHEgGlTsVY
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這有可能是紫外線對植物的新陳代謝產生變化所致，還需要進一步的研究才能證實。460Please respect copyright.ＰＥＮＡＮＡzYTA47s4D2
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Ref1:https://www.sciencedirect.com/science/article/pii/S0308814620325899?via%3Dihub#t0010460Please respect copyright.ＰＥＮＡＮＡ6gQ3n8okb2

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