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   natural melanin 的翻译结果: 查询用时:0.208秒
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natural melanin
相关语句
  天然黑色素
     Melanin in Black Sesame is a kind of natural melanin. Its composition an structure is different from melanin derived from animals, and its structure is not confirmed till now.
     黑芝麻色素属于天然黑色素系列,其组成与结构不同于动物来源色素,其结构至今尚不明确。
短句来源
     The paper studied the method of extracting melanin from auricularia,physiochemieal properties and stability,in order to exploit a new kind of natural melanin resource.
     为了开发一种新的天然黑色素来源,本文研究了从黑木耳中提取黑色素的方法、理化性质和稳定性。
短句来源
     The results obtained in the present study indicated that the reducing power, which was stronger than that of synthesis antioxidant BHT, and increased with increased concentration of the natural melanin.
     结果表明,该天然黑色素的还原性比人工合成抗氧化剂BHT强,且随着黑色素浓度的增大而增强;
短句来源
  “natural melanin”译为未确定词的双语例句
     The melanin was isolated from the fermentation mixture of the strain No. 88. After purification by the means of extraction, folium separation, silica gel column separation, HPLC, the ESI-MS detect was hold and the melanin was determined to be consist of 11 components and the HR-MS was hold to detect each of those components. The molecular formulas of 8 of those components were speculated according the correlative literatures on the structure of the natural melanin.
     从88号菌种发酵液中分离提取出了黑色素,并通过萃取、薄层层析、硅胶柱层析、高效液相色谱等方法对黑色素进行了纯化,对纯化后的黑色素进行了ESI-MS检测,确定其主要由11种成分组成,并对这11种成分进行了高分辨率质谱检测,结合已有的相关文献对所得黑色素结构进行了分析,推测出其中8种成分的分子式。
短句来源
     (3)Plasmid of pcDNA3tyr was transfected into HepG2 cell and synthesized a large amount of melanin in HepG2 cell; the synthetic melanin appeared high signal in T1WI MR imaging as same as natural melanin and was enough to be detected by MR. And further, the signal intensity was positively related to the amount of transferred plasmid.
     (3)pcDNA3tyr质粒转染进入HepG2细胞并在其中表达生成黑色素,其数量能够被MR检测到,这种黑色素与在正常细胞中生成的黑色素一样在T1WIMR影像上呈高信号,且MR信号强度与转染质粒量成正相关。
短句来源
     These characteristics show that it is a good natural melanin in food industrial applications.
     除还原剂以外,热、光、氧化剂及常用食品添加剂对其无影响,说明该色素稳定性良好,作为天然色素具有广阔的开发应用前景。
短句来源
     Reducing power, metal chelating ability and metal contents of the pure natural melanin from Osmanthus fragrans' seeds was studied.
     对桂花种子皮黑色素的还原性、金属鏊合性能进行了研究,并测定了其金属含量。
短句来源
     In addition, the metal contents of natural melanin were investigated and natural melanin had many microelements e.g. Fe, Mn and Cu etc.
     该黑色素还含有大量Fe、Mn、Cu等微量元素。
短句来源
  相似匹配句对
     Melanin
     Melanin(高二适用)
短句来源
     Natural.
     Natural(天然等同)相近。
短句来源
     Natural Cybernetics
     自然控制论
短句来源
     These characteristics show that it is a good natural melanin in food industrial applications.
     除还原剂以外,热、光、氧化剂及常用食品添加剂对其无影响,说明该色素稳定性良好,作为天然色素具有广阔的开发应用前景。
短句来源
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  natural melanin
The optical absorption and luminescence spectra of the films of natural melanin were measured.
      
There is thus much evidence which suggests that a number of metals combine with, and perhaps influence the colour of, natural melanin complexes.
      


BACKGROUND & OBJECTIVE:Gene therapy is the frontier of life science. There is no perfect method to evaluate gene expression without invasion at present. Medical imaging connecting with molecular biology might be helpful; however, the technology is just on the horizon. The authors conducted this study in vitro by transferring reporter tyrosinase gene into HepG2 cell to apply magnetic resonance imaging (MR) for evaluating gene expression. METHODS:The plasmid of pcDNA3tyr carried the full length cDNA of tyrosinase...

BACKGROUND & OBJECTIVE:Gene therapy is the frontier of life science. There is no perfect method to evaluate gene expression without invasion at present. Medical imaging connecting with molecular biology might be helpful; however, the technology is just on the horizon. The authors conducted this study in vitro by transferring reporter tyrosinase gene into HepG2 cell to apply magnetic resonance imaging (MR) for evaluating gene expression. METHODS:The plasmid of pcDNA3tyr carried the full length cDNA of tyrosinase gene was transfected into HepG2 cell by lipofectin, its property of synthesizing melanin was used to produce high signal in T1WI MR image and then to evaluate gene expression. Further identification were performed with searching melanin granules by Fontana staining and searching cDNA of tyrosinase gene using reverse transcription polymerase chain reaction (RT PCR). RESULTS:(1)The melanin granules were found in HepG2 cell using Fontana staining. (2)The cDNA fragment of tyrosinase gene was detectable in transferred HepG2 cell by RT PCR. (3)Plasmid of pcDNA3tyr was transfected into HepG2 cell and synthesized a large amount of melanin in HepG2 cell; the synthetic melanin appeared high signal in T1WI MR imaging as same as natural melanin and was enough to be detected by MR. And further, the signal intensity was positively related to the amount of transferred plasmid. CONCLUSION:The fact that synthetic melanin of HepG2 cell can be detected by MR demonstrates that medical imaging connecting with molecular biology can be used to evaluate the result of gene expression in vitro.

背景与目的:基因治疗是生命科学研究的前沿领域,但目前其主要技术手段———基因转染及表达尚缺乏理想的无创性评价方法,影像学与分子生物学技术结合有可能解决这一问题,但这方面研究才刚刚开始。本研究利用酪氨酸酶基因作为报告基因,在体外细胞中进行实验,以探索MR评价体外细胞基因表达的方法。方法:以脂质体将含酪氨酸酶基因完全cDNA的pcDNA3tyr质粒转染到HepG2细胞,利用其合成大量黑色素而在T1WIMR影像上呈高信号的特性来反映基因表达的情况,同时应用Fontana染色法检测黑色素和RT-PCR检测cDNA片段的方法来进一步验证。结果:(1)Fontana染色法可检测到HepG2细胞内的黑色素颗粒。(2)采用RT-PCR方法可检测到转染的HepG2细胞中含酪氨酸酶基因的cDNA片段。(3)pcDNA3tyr质粒转染进入HepG2细胞并在其中表达生成黑色素,其数量能够被MR检测到,这种黑色素与在正常细胞中生成的黑色素一样在T1WIMR影像上呈高信号,且MR信号强度与转染质粒量成正相关。结论:MR能够检测到体外细胞内合成的黑色素,说明影像学与分子生物学技术结合可能成为一种评价体外细胞基因表达的方法。

Black wheat contains rich natural melanin.Protein content of its whole meal is high to 17.71%.And protein content of its flour is high to 18.26%.Content of its organic Se is high to 1.04g/kg.Exploitation and utilization of black wheat 76 will be good materials of brewing high quality soy sauce.

黑粒小麦76富含天然黑色素,全粉蛋白质含量高达17.71%,面粉蛋白质含量高达18.26%,有机硒含量高达1.04g/kg,开发利用黑粒小麦76为酿造优质酱油的好原料。

The melanin was obtained from Aureobasidium pullulans with fermentation process.The chemical properties of melanin including thermo-stability,photo-stability,resistance to oxidant-reduction and the effect of pH value on absorption of melanin solution were examined.Furthermore,usual food additives were also investigated for the melanin stability.The test showed that the maximum absorption peak of the melanin is 225nm and the melanin becomes brown in alkali solution and light red in the acid solution.The melanin...

The melanin was obtained from Aureobasidium pullulans with fermentation process.The chemical properties of melanin including thermo-stability,photo-stability,resistance to oxidant-reduction and the effect of pH value on absorption of melanin solution were examined.Furthermore,usual food additives were also investigated for the melanin stability.The test showed that the maximum absorption peak of the melanin is 225nm and the melanin becomes brown in alkali solution and light red in the acid solution.The melanin is of stable chemical properties except the effect of reducing agent.These characteristics show that it is a good natural melanin in food industrial applications.

从短梗霉中提取黑色素,并对黑色素的酸碱、热、光、耐氧化还原性以及常用食品添加剂对色素稳定性的影响进行了探讨。结果表明:黑色素的最大吸收峰为225nm;碱性条件下呈黑褐色,酸性下呈棕红或棕黄色;除还原剂以外,热、光、氧化剂及常用食品添加剂对其无影响,说明该色素稳定性良好,作为天然色素具有广阔的开发应用前景。

 
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