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xiehuaiyan木蟲 (小有名氣)
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求助翻譯,希望精準(zhǔn)些,謝謝
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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. |
金蟲 (初入文壇)
| 植物組織中色素的存在賦予了蔬菜和水果于不同的顏色,它們的差別依賴于其多樣性和物種。色素是具有不同化學(xué)結(jié)構(gòu)的物質(zhì),主要以卟啉色素,類胡蘿卜素,花青素和黃酮類化合物的形式存在。蔬菜中發(fā)現(xiàn)的主要的卟啉色素是葉綠素a,b和c。葉綠素a,植物中的主要色素,通過光合作用能將光能轉(zhuǎn)換為化學(xué)能。葉綠素的含量隨著物質(zhì)的的不同而不同。從水果到蔬菜,其所含葉綠素的變化對它們成熟階段顏色的變化很重要。CIOFU研究表明西紅柿葉綠素的含量在成熟階段,新鮮樣品中含量為0.95 mg/100g,放置7天后變?yōu)?.12mg/100g。 |
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