螯合活性 的英文怎麼說

中文拼音 [áogěhuóxìng]
螯合活性 英文
sequestering activity
  • 螯 : 名詞（螃蟹等節肢動物的變形的第一對腳） chela; pincers
  • 合 : 合量詞（容量單位） ge, a unit of dry measure for grain （=1 decilitre）
  • 活 : Ⅰ動詞1 （生存; 有生命） live 2 [書面語]（救活） save （the life of a person）:活人無算 （of a goo...
  • 性 : Ⅰ名詞1 （性格） nature; character; disposition 2 （性能; 性質） property; quality 3 （性別） sex ...
  • 活性 : [化學] activity; active; activated活性肥料 active fertilizer; 活性酵母 active dry yeast; 活性粘土...
  1. Monogastric animals, such as pigs and poultry, are not able to utilize phytate phosphorus efficiently, since they have only low levels of phytase activity in their digestive tracts, phytate also acts as an antinutritional agent in monogastric animals by chelating various microelements needed by the animal

    由於單胃動物如豬、雞等的消化道中植酸酶活性很低，導致它們無法有效利用植酸磷。同時，植酸也是一種抗營養因子，因為它能螯合許多動物生長所必須的微量元素。
  2. Surface active agents - determination of chelating agent content - titrimetic method

    表面活性劑螯合劑含量的測定滴定法
  3. The recombinants were constructed by transforming ppic9 a - xynb into p. pastoris gs115. the assay results revealed that the xylanase gene xynb was overexpressed and secreted effectually in p. pastoris. in 3l fermentor the expression level of xylanase xynba exceeded 1200iu / ml and the expressed xylanase had normal bioactivity. the molecule weight of xynba was determined as about 31kd which is higher than 23kd of original enzyme xynb from streptomyces olivaceoviridis a1. xynbb was gotten by deglycasylation of xynba, whose molecule weight returned to 23kd. we comparised the enzymatic properties of xynba expressed in p. pastoris, xynbb deglycasylated from xynba and xynb produced from streptomyces olivaceoviridis al : there was little difference among the three enzymes on optimal ph, the optimal ph of xynb and xynba were both 5. 2, the optimal ph of xynbb was 5. 0 ; the optimal temperature of xynb and xynba were both 60 c, while the optimal temperature of xynbb was 50 ? ; because of glycosylation the thermal stability of xynba was better than xynb and xynbb ; the specific activity of xynba and xynbb were 883. 88iu / mg and 832. 5hu / mg respectively, which were both lower than 2814. 45iu / mg of xynb ; the km values of xynb and xynba were similar to each other which were 21. 56 ( g / kg ) and 20. 87 ( g / kg ), while the km value of xynbb was 27. 10 ( g / kg ) ; the fmax of xynba and xynbb were 4568umol / mg. min and 5329umol / mg. min respectively which were lower than 27623 umol / mg. min of xynb ; additionally all of the three enzymes did not display cellulase activity. they all had well resistance to pepsion and trypsin, and were not sensitive to metal iron, surface active agent and chelating agent. the analysis of different xylans enzymatic hydrolysate revealed : by xynba, that the main constitutions of enzymatic hydrolysate of birch wood xylans were xylotriose and xyloquaiose, which account for 68. 43 % and 16. 50 % respectively, additionally there was 11. 79 % of xylobiose ; the main constitutions of enzymatic hydrolysate of corncobs xylans were xylobiose and xylotriose, which account for 81. 78 % and 11. 55 %. the result indicated that this xylanase was a kind of 1, 4 - b - d - xylanohydrolase and was fit to used in industrial procession of xylooligosacc harides

    進一步對xynba進行了脫糖基化處理得到xynbb ，其分子量恢復到23kd ，證明xynba是糖基化蛋白。通過對畢赤酵母重組表達的木聚糖酶xynba 、脫糖基化的木聚糖酶xynbb以及橄欖綠鏈黴菌a1所產原酶xynb之間酶學性質的比較發現：三種酶的最適ph差異不大， xynb和xynba均為5 . 2 ， xynbb為5 . 0 ； xynb和xynba的最適溫度均為60 ， xynbb降為50 ：在耐熱性上， xynba由於糖基化作用熱穩定性明顯高於未糖基化的xynb和xynbb ； xynba和xynbb的比活性分別為883 . 88iu mg和832 . 51iu mg ，明顯低於原酶的比活2814 . 45iu mg ； xynb和xynba的km值相當，分別為21 . 56 （ g kg ）和20 . 87 （ g kg ） ，而xynbb的km值較大為27 . 10 （ g kg ） ； xynba和xynbb的vmax相差不大，分別為4568 mol mg ? min和5329 mol mg ? min ，明顯低於xynb的27623 mol mg ? min此外三種酶均無纖維素酶活性，對胃蛋白酶和胰蛋白酶有很好的抗性，且對作用環境中的各種離子、表面活性劑、螯合劑不敏感。通過對不同木聚糖的酶解產物的糖份分析發現：以樺木木聚糖為底物時，酶解產物主要為木三糖和木四糖，含量分別為68 . 43和16 . 50 ，另外還含有11 . 79的木二糖；以玉米芯木聚糖為底物時，酶解產物主要為木二糖和木三糖，含量分別為81 . 78和11 . 55 。
  4. The main mechanisms of earthworms ' resistance to metal pollutants are also elaborated : ( 1 ) its lipid antioxidative enzyme system helps relieve the stress of oxidation ; ( 2 ) compartment and immobilization of metals ; ( 3 ) process of chelating and detoxicification ; ( 4 ) lysosome and cellular plasmid are activated to restrain activity of heavy metals

    並闡述了蚯蚓對重金屬的主要耐性機制： （ 1 ）脂質過氧化保護酶系統緩解氧化脅迫； （ 2 ）分隔、固定作用； （ 3 ）螯合解毒作用； （ 4 ）溶酶體和細胞質粒抑制重金屬活性。
  5. The series of trials indicated some ions were helpful to stabilize the configuration of cml and the inhibition of cml ' s activity by edta was dual. edta inhibited the agglutinate activity of cml directly and also made cml lose its agglutinate activity through chelating the ions in cml

    以上結果表明edta對cml活性的抑制是雙重的：即edta可以通過非螯合金屬離子的方式抑制cml的活性，也可以通過螯合cml分子中的金屬離子使其失去活性。
  6. Under hs at 44, addition of the calcium ion chelator egta to a whole cell extract reduced the binding of the hsf to hse. re - addition of cacl2 to the sample pretreated by egta restored the binding activity of the hsf to hse obviously. dna - binding activity of the hsf was also induced by directly adding ca2 + to a whole cell extract at non - heat - shock temperature, but not by the same concentration of mgcl2

    44熱激條件下以ca ~ （ 2 + ）螯合劑egta處理玉米幼苗全細胞提取液可抑制hsf的dna結合活性，而回加cacl _ 2又可恢復hsf的活性；在非熱激條件下直接以cacl _ 2處理則可代替熱激激活hsf的活性，其中1mmcacl _ 2的作用最明顯，而相同濃度的mgcl _ 2無此作用。
  7. Tetrasaccharide, pentasaccharide and hexasaccharide of chitooligosaccharide has outstanding function in anti - plant diseases and promoting growing

    環保上，可作為活性污泥絮凝劑，重金屬離子及有機物的螯合劑和吸附劑
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