论文摘要翻译成英文 本人比较着急,不要软件翻译的那种,跪求英语高手亲自翻译,要求用过去时。

紫茄皮红色素抗氧化活性的研究摘要本课题以紫茄皮为原料,以抗坏血酸、柠檬酸为对照,以Fenton反应产生羟自由基(•OH),邻苯三酚自氧化反应产生超氧阴离子自由... 紫茄皮红色素抗氧化活性的研究
摘 要
本课题以紫茄皮为原料,以抗坏血酸、柠檬酸为对照,以Fenton反应产生羟自由基(•OH) ,邻苯三酚自氧化反应产生超氧阴离子自由基(O2-•)为试验模型,采用紫外分光光度计测定紫茄子皮红色素对羟自由基、超氧阴离子自由基的清除作用;以猪油作底物,采用烘箱贮藏法测定油脂的POV值,研究了紫茄皮红色素对油脂的抗氧化活性。实验结果表明:紫茄子皮红色素对上述自由基均有清除作用,对羟自由基清除效果比柠檬酸、抗坏血酸好, 且清除效果随着浓度的增大而增强,当浓度大于0.5g/100ml,对•OH自由基清除能力趋于稳定;对超氧阴离子自由基清除效果比柠檬酸、抗坏血酸好,最大抑制率为91%,当浓度大0.6g/100ml后,对邻苯三酚自氧化的抑制作用趋于稳定;抑制脂质过氧化的程度强于柠檬酸和抗坏血酸,在0.7g/ml的浓度下,协同增效作用趋于稳定。

关键词:紫茄皮红色素;羟自由基;邻苯三酚;油脂的POV值;抗氧化性
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菱灬流年逝世
2011-06-18 · TA获得超过126个赞
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Purple eggplant skin red pigment antioxidant activity of
Abstract
The topics to purple eggplant skin as raw materials, ascorbic acid, citric acid as the control to the Fenton reaction produces hydroxyl radical (• OH), pyrogallol autoxidation reaction of superoxide anion radical (O2-•) for the test model using UV spectrophotometer eggplant purple red pigment in the skin of the hydroxyl radical, superoxide anion radical scavenging; lard as substrate, using the oven storage method for the determination of POV value of oil, the skin of the eggplant purple red pigment The antioxidant activity of oil. The results show that: eggplant purple red pigment of the skin are scavenging free radicals, hydroxyl radical scavenging effect than citric acid, ascorbic acid is good, and the clear effect was enhanced with increasing concentration, when the concentration is greater than 0.5g / 100ml, • OH radical scavenging ability of the stabilized; on superoxide anion radical scavenging effect than citric acid, ascorbic acid is good, the maximum inhibition rate was 91%, when the concentration of large 0.6g/100ml later, the self-pyrogallol oxidation inhibition stabilized; inhibit lipid peroxidation extent stronger than citric acid and ascorbic acid concentrations in 0.7g/ml, synergies stabilize.

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沧海月明之杜鹃啼血
2011-06-15 · TA获得超过2609个赞
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Abstract: With the development of science and technology, electronics, electronic measuring a vast number of electronic journalists must master the means of measurement accuracy and functional requirements have become more sophisticated, we design a microcontroller based DC digital voltmeter.
This paper describes high-precision digital voltmeter using ADC0809 A / D converter circuit, the use of LED digital display module display. First described in detail a digital voltmeter, digital voltmeter and then about the design of hardware and software design, including data acquisition circuit, analog-digital conversion circuit and display circuit specific design. Through the MCU AT89S52 and A / D converter ADC0809 complete data conversion and transmission, the core of the system. Expounded the principle of ADC0809 and voltage sampling circuit, A / D converter circuit, the reference power supply circuit, reset circuit, clock circuit and so circuit specific design. Software design includes a main program, analog-digital conversion process and display program design, program flow diagram is given.
Finally, according to the system software and hardware design debugging. Verified by the commissioning of the system meets the design requirements, high accuracy, high sensitivity, performance, reliable, simple, low cost.
Keywords: microcontroller; voltage sampling; A / D conversion
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sunnamark
2011-06-15 · TA获得超过139个赞
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我有偿翻译,专业翻译文献!
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洪老师的复习资料库
2011-06-15
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The tomato is a kind of antioxidant activity
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This subject is the tomato skins as raw material, with ascorbic acid, citric acid as controls, with Fenton reaction produces hydroxyl radicals (• OH), adjacent pyrogallol from oxidation reaction to produce superoxide anion radical (O2-•) for test model, and the ultraviolet spectrophotometer to measure eggplant is a kind of hydroxyl radicals, superoxide anion radical scavenging effect; For the substrate to lard, use the oven storage method to determine the POV values of grease, study the purple tomato is a kind of to grease the antioxidant activity. The experimental results show that: eggplant is a kind of the above free radicals are clear roles of free radical scavenging effect (than citric acid, ascorbic acid, and remove effect with the increase of the concentration enhancement, when concentration is greater than 0.5 g / 100 ml of free radical scavenging capacity, OH stable; Superoxide anion of free radical scavenging effect than citric acid, ascorbic acid, best inhibition rate was 91%, 0.6 g/when the concentration of 100 ml after, to adjacent pyrogallol since the oxidation of inhibition become stable; Restrain the degree of lipid peroxidation than citric acid and ascorbic acid, in 0.7 g/ml concentrations, synergistic effect be more stable.

Keywords: purple tomato skin red pigment; Hydroxyl radicals; Adjacent pyrogallol; Grease POV values; Oxidation stability
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匿名用户
2011-06-22
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Abstract: With the development of science and technology, electronics, electronic measuring a vast number of electronic journalists must master the means of measurement accuracy and functional requirements have become more sophisticated, we design a microcontroller based DC digital voltmeter.
This paper describes high-precision digital voltmeter using ADC0809 A / D converter circuit, the use of LED digital display module display. First described in detail a digital voltmeter, digital voltmeter and then about the design of hardware and software design, including data acquisition circuit, analog-digital conversion circuit and display circuit specific design. Through the MCU AT89S52 and A / D converter ADC0809 complete data conversion and transmission, the core of the system. Expounded the principle of ADC0809 and voltage sampling circuit, A / D converter circuit, the reference power supply circuit, reset circuit, clock circuit and so circuit specific design. Software design includes a main program, analog-digital conversion process and display program design, program flow diagram is given.
Finally, according to the system software and hardware design debugging. Verified by the commissioning of the system meets the design requirements, high accuracy, high sensitivity, performance, reliable, simple, low cost.
Keywords: microcontroller; voltage sampling; A / D conversion
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