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xiehuaiyan

木虫 (小有名气)

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The presence of pigments in plant tissues gives color to vegetables and fruit, which is
different depending on variety and species. Pigments are substances with very different chemical structure; they are present in the form of porphyrin pigments, carotenoids, anthocyanins and flavones. The main porphyrin pigments found in vegetables are chlorophyll a,b and c. Chlorophyll a, the main pigment in plants, converts light energy into chemical energy through photosynthesis process. The content of chlorophyll pigments varies by species.
The change of chlorophyll pigment content from fruit and vegetables have a great
importance for their color variation during the maturation phase. CIOFU [5] states that the  chlorophyll content of tomatoes during ripening period varied from 0.95 mg/100 g fresh product to 0.12 mg/100 g fresh product after 7 day of storage.
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hyt0615

金虫 (初入文坛)

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xiehuaiyan: 金币+20, 翻译EPI+1, ★★★★★最佳答案, 谢谢你,翻译的不错 2013-08-08 12:09:58
植物组织中色素的存在赋予了蔬菜和水果于不同的颜色,它们的差别依赖于其多样性和物种。色素是具有不同化学结构的物质,主要以卟啉色素,类胡萝卜素,花青素和黄酮类化合物的形式存在。蔬菜中发现的主要的卟啉色素是叶绿素a,b和c。叶绿素a,植物中的主要色素,通过光合作用能将光能转换为化学能。叶绿素的含量随着物质的的不同而不同。从水果到蔬菜,其所含叶绿素的变化对它们成熟阶段颜色的变化很重要。CIOFU研究表明西红柿叶绿素的含量在成熟阶段,新鲜样品中含量为0.95 mg/100g,放置7天后变为0.12mg/100g。
2楼2013-08-07 13:32:19
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