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xiehuaiyan

木蟲 (小有名氣)

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[求助] 幫忙翻譯下，希望精準(zhǔn)些，謝謝

The research was conducted on 17 samples of several vegetable species collected from different greenhouses located in southern part of Romania. Investigated species were cherry tomatoes, common tomatoes, peppers and cucumbers, in several varieties and hybrids existing in culture.
Extraction of pigments was carried out in stoppered tubes. Vegetables samples were prepared with a laboratory homogenizer using about 1 g fresh material. Three extraction solutions were used for each sample: 95% aqueous diethyl ether solution (petroleum ether), 90% aqueous methanol solution and 100% acetone. The extraction ratio was 1:50.
Homogenized mixture is separated by centrifugation at 3000 rpm, for 10 minutes.
The analytical determination was performed with Helios α spectrophotometer at the
following wavelengths: 645, 653, 662 and 664 nm, for chlorophyll a and b (according to each extraction solvent) and 470 nm for carotene.

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1樓 2013-09-26 13:35:16

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xux730

鐵桿木蟲 (著名寫手)

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xiehuaiyan: 金幣+15, 翻譯EPI+1, ★★★很有幫助 2013-09-29 13:19:01

供參考：
該項(xiàng)目對從位于羅馬尼亞南部不同暖棚的數(shù)個蔬菜品種中采集的17個樣品進(jìn)行研究。研究的養(yǎng)殖中數(shù)個不同及雜交的品種，包括櫻桃西紅柿、普通西紅柿、辣椒和黃瓜。
色素提取在帶塞的試管中進(jìn)行。蔬菜樣品用實(shí)驗(yàn)室專用勻漿機(jī)對1克左右的新鮮材料進(jìn)行勻漿而制備。每個樣品用三種萃取液萃�。�95％乙醚水溶液（石油醚），90％甲醇水溶液和100％丙酮。抽提比例為1:50。
勻漿混合物通過離心（轉(zhuǎn)速為3000rpm）10分鐘而分離。
利用Helios α分光光度計(jì)分析測定葉綠素a和b（根據(jù)各自的萃取溶劑）（波長：645，653，662和664 nm）的溶度和胡蘿卜素（波長470 nm）的溶度。

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2樓2013-09-26 15:58:06

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