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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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xux730
铁杆木虫 (著名写手)
- 翻译EPI: 86
- 应助: 1719 (讲师)
- 金币: 10740.4
- 散金: 50
- 红花: 43
- 帖子: 2947
- 在线: 336.5小时
- 虫号: 1374299
- 注册: 2011-08-20
- 专业: 细胞周期与调控
【答案】应助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
xiehuaiyan: 金币+20, 翻译EPI+1, ★★★很有帮助 2013-10-06 10:01:43
xiehuaiyan: 金币+20, 翻译EPI+1, ★★★很有帮助 2013-10-06 10:01:43
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对数种蔬菜的分析表明它们含有各种叶绿素a，b和胡萝卜素。当用乙醚抽提时，叶绿素a的含量少且难以检测到，但从黄瓜抽提得到的数值从7.21毫克到33.76毫克每100克鲜品不等（表1），平均值为23.14毫克每100克鲜品，标准偏差为10.31 ，变异系数为44.55％ （表2） 。当用甲醇抽提时，叶绿素a的含量较高，从10.49毫克到626.15毫克每100克鲜品不等。樱桃西红柿的叶绿素a含量介于10.49毫克至28毫克每100克鲜品，普通西红柿的叶绿素a含量介于10.49毫克和45.89毫克每100克鲜品之间。 用甲醇抽提时，辣椒和黄瓜的叶绿素a分别介于45.89毫克和127.52毫克每100克鲜品之间及354.06毫克和626.15毫克每100克鲜品之间。 用丙酮抽提时，西红柿中检测到低量的叶绿素a，范围从3.98毫克至5.54毫克每100克鲜品，辣椒色素的含量在181.06毫克和416.07毫克每100克鲜产品之间。用丙酮抽提叶绿素的最高值介于259.89毫克和466.27毫克每100克鲜品之间。 |
2楼2013-10-01 20:23:27