三糖的英文
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"三糖"怎么读用"三糖"造句
英文翻译手机版
- g3-cnp
- triasaccharide
- triose
- triple sugar
- trisaccharide
- trisaccharose
- "三"英文翻译 three
- "糖"英文翻译 sugar
- "己三糖" 英文翻译 : hexotriose
- "壳三糖" 英文翻译 : chitotriose
- "蜜三糖" 英文翻译 : melitose; melitriose; raffinose
- "密三糖" 英文翻译 : raffinose
- "三糖(类)" 英文翻译 : trisaccharide; trisaccharose
- "三糖酶" 英文翻译 : trisaccharidase
- "三糖酸" 英文翻译 : trisaccharidase
- "三糖铁" 英文翻译 : triple sugar iron
- "松三糖" 英文翻译 : melcitose; melexitose; melezitose; melixitose; melizitose
- "海带三糖;昆布三糖" 英文翻译 : laminaritriose
- "淀粉三糖" 英文翻译 : amylo triose; amylotriose
- "番茄三糖" 英文翻译 : lycotriose
- "甘露三糖" 英文翻译 : levidulinose; mann triose; manninotriose; manno triose
- "海葱三糖" 英文翻译 : scillatriose
- "黑曲霉三糖" 英文翻译 : nigerotriose
- "荚豆三糖" 英文翻译 : vicianose
- "聚麦蚜三糖" 英文翻译 : pullulan
- "昆布三糖" 英文翻译 : laminaritriose
- "磷酸三糖" 英文翻译 : triosepnosphoric acid
- "龙胆三糖" 英文翻译 : gentianose
- "马铃薯三糖" 英文翻译 : chacotriose
- "麦芽三糖" 英文翻译 : maltotriose; trisaccharide maltose
- "蜜里三糖" 英文翻译 : melitriose
例句与用法
- Fos contain mixture of gf2 , gf3 and gf4 sugars ( where g = glucose molecule and f = fructose molecule ) and a dp ( “ degree of polymerization ” ) of 3 - 5 ( “ neosugar ” ) , are not naturally - occurring but are enzymatically synthetized from sucrose by action of an enzyme from the fungus aspergillus niger
详细说明:是以蔗糖做底物,采用呋喃果糖苷酶转果糖基作用,在蔗糖分子上以( 1 2 )糖苷键上与1 - 3个果糖分子结合,形成的蔗果三糖( gf2 ) 、蔗果四糖( gf3 ) 、蔗果五糖( gf4 )属于果糖和蔗糖构成的直链杂低聚糖,在形成的产物中还有果糖、葡萄糖和未反应完全的底物蔗糖,采用色谱法除去单糖和双糖制得高纯度的低聚果糖。 - 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
进一步对xynba进行了脱糖基化处理得到xynbb ,其分子量恢复到23kd ,证明xynba是糖基化蛋白。通过对毕赤酵母重组表达的木聚糖酶xynba 、脱糖基化的木聚糖酶xynbb以及橄榄绿链霉菌a1所产原酶xynb之间酶学性质的比较发现:三种酶的最适ph差异不大, xynb和xynba均为5 . 2 , xynbb为5 . 0 ; xynb和xynba的最适温度均为60 , xynbb降为50 :在耐热性上, xynba由于糖基化作用热稳定性明显高于未糖基化的xynb和xynbb ; xynba和xynbb的比活性分别为883 . 88iu mg和832 . 51iu mg ,明显低于原酶的比活2814 . 45iu mg ; xynb和xynba的km值相当,分别为21 . 56 ( g kg )和20 . 87 ( g kg ) ,而xynbb的km值较大为27 . 10 ( g kg ) ; xynba和xynbb的vmax相差不大,分别为4568 mol mg ? min和5329 mol mg ? min ,明显低于xynb的27623 mol mg ? min此外三种酶均无纤维素酶活性,对胃蛋白酶和胰蛋白酶有很好的抗性,且对作用环境中的各种离子、表面活性剂、螯合剂不敏感。通过对不同木聚糖的酶解产物的糖份分析发现:以桦木木聚糖为底物时,酶解产物主要为木三糖和木四糖,含量分别为68 . 43和16 . 50 ,另外还含有11 . 79的木二糖;以玉米芯木聚糖为底物时,酶解产物主要为木二糖和木三糖,含量分别为81 . 78和11 . 55 。
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