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xiehuaiyan

木蟲 (小有名氣)

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Analyses performed on several vegetables showed a large variety of chlorophyll a and b and also of carotene content. When performing diethyl ether extraction, the content of chlorophyll a was small, difficult to detect, except the values obtained at
cucumber determinations that had ranged from 7.21 mg/100 g fresh product to 33.76 mg/100 g fresh product (Table 1). The averaged was 23.14 mg/100 g, the standard deviation was 10.31 and the coefficient of variation was 44.55% (Table 2). In the case of methanol extraction, the contents were higher, varying from 10.49 mg/100 g fresh product to 626.15 mg/100 g fresh product. In the case of cherry tomatoes, chlorophyll a content varied between 10.49 mg/100 g to 28 mg/100 g fresh product and in common tomatoes, range values were between 10.49 mg/100 and 45.89 mg/100 g fresh product.
In pepper, chlorophyll a results obtained by methanol extraction ranged from 45.89 mg/100 g and 127.52 mg/100 g fresh product and in
cucumber the values ranged from 354.06 mg/100 g to 626.15 mg/100 g fresh product.
The acetone extraction of chlorophyll a, detected in tomatoes was low, ranging from 3.98 mg/100 g to 5.54 mg/100 g fresh product and in pepper the quantities of pigment had values between 181.06 mg/100 g and 416.07 mg/100 g fresh product. The highest values of chlorophyll extracted in acetone ranged between 259.89 mg/100 g and 466.27 mg/100 g fresh product.

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1樓 2013-10-01 12:45:23

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xux730

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xiehuaiyan: 金幣+20, 翻譯EPI+1, ★★★很有幫助 2013-10-06 10:01:43

對(duì)數(shù)種蔬菜的分析表明它們含有各種葉綠素a，b和胡蘿卜素。當(dāng)用乙醚抽提時(shí)，葉綠素a的含量少且難以檢測(cè)到，但從黃瓜抽提得到的數(shù)值從7.21毫克到33.76毫克每100克鮮品不等（表1），平均值為23.14毫克每100克鮮品，標(biāo)準(zhǔn)偏差為10.31 ，變異系數(shù)為44.55％（表2）。當(dāng)用甲醇抽提時(shí)，葉綠素a的含量較高，從10.49毫克到626.15毫克每100克鮮品不等。櫻桃西紅柿的葉綠素a含量介于10.49毫克至28毫克每100克鮮品，普通西紅柿的葉綠素a含量介于10.49毫克和45.89毫克每100克鮮品之間。
用甲醇抽提時(shí)，辣椒和黃瓜的葉綠素a分別介于45.89毫克和127.52毫克每100克鮮品之間及354.06毫克和626.15毫克每100克鮮品之間。
用丙酮抽提時(shí)，西紅柿中檢測(cè)到低量的葉綠素a，范圍從3.98毫克至5.54毫克每100克鮮品，辣椒色素的含量在181.06毫克和416.07毫克每100克鮮產(chǎn)品之間。用丙酮抽提葉綠素的最高值介于259.89毫克和466.27毫克每100克鮮品之間。

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2樓2013-10-01 20:23:27