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    A STUDY OF THE FERTILIZER EFFICIENCY OF MILK-VETCH Ⅱ.THE NITROGEN FRACTIONS EXTRACTED WITH 0.5N NEUTRAL(pH 7.0)SODIUM PYROPHOSPHATE SOLUTION
    紫云英绿肥的肥效研究——Ⅱ.用0.5N中性(pH7.0)焦磷酸钠溶液提取的氮组分
    STUDIES ON THE INHIBITING EFFECTS OF SOYBEAN SEED EXTRACTS ON THE INFECTIVITY OF SOYBEAN MOSAIC VIRUS
    大豆种子浸提液对大豆花叶病毒侵染力的抑制效应
    The Successive Extract Method for the Separation of Wheat Grain Protein Component and the Selection of Extract Time
    小麦蛋白质组分的连续提取分离法及提取时间的选择
    A STUDY OF EXTRACTING PECTIN FROM FRESH SUNFLOWER STEM BY THE WAY OF SALTING OUT
    盐析法从鲜向日葵梗中提取果胶的工艺研究
    Effect of seed treatment with extract B from Cyperus rotundus
    香附子提取物B处理作物种子效应初报
    Study of Method on Extracting Theanine
    茶氨酸提取方法的研究
    The optimal process conditions were obtained by orthogonal L9(34) analysis as follows: ethanol concentration 50%,extraction temperature 70℃,extracting during 6 h,ratio of solvent to sample1:30 and extracting for three times.
    在单因素的基础上,通过正交试验L9(34),得到最佳提取条件为乙醇质量浓度为50%,浸提温度70℃,浸提时间6h,料液比1∶30,浸提次数3次。
    Ultrasonic-assisted extraction was used to extract solanesol from tobacco leaves,the optimum extraction parameters were chosen as follows by orthogonal design: acetone as solvent,temperature 60 ℃,extraction time 2 h,ratio of leaves: solvent at 1∶ 17.5 and ultrasonic power 160 W,extraction time was the key factor affect the extraction rate.
    通过正交试验确定超声波辅助提取烟叶中的茄尼醇最优工艺条件为:以丙酮为提取溶剂,料液比1∶17.5(g/mL),温度60℃,浸提2h,超声波功率160W,其中浸提时间是影响茄尼醇提取率的主要因素。
    The contents of three compounds were 3.894 mg/g,3.345 mg/g and 0.427 mg/g respectively in extracts with Soxhlet extraction from the leaves,and 2.225 mg/g,1.829 mg/g and 0.241 mg/g respectively from the stems.
    沙地柏叶中的鬼臼毒素、脱氧鬼臼毒素和苦鬼臼毒素含量分别为3.894、3.345、0.427 m g/g,茎中的含量分别为2.225、1.829、0.241 m g/g;
    In extracts with SFE-CO2,the content of three compounds were 2.327 mg/g,2.116 mg/g,0.191 mg/g respectively from the leaves,and 1.784 mg/g,1.446 mg/g and 0.108 mg/g respectively from the stems.
    超临界流体萃取沙地柏叶中的3种化合物含量分别为2.327、2.116、0.191 mg/g,茎中的含量分别为1.784、1.446、0.108mg/g。
    wood knife threshing(0.8 cm sieve) got the most seed number,937.3 g seeds were extracted from 10 kg materials,showing 8.37% damage,88.33% seed purity and 92.33% germination rate,ranked the second among eight methods.
    木刀脱粒机脱粒法(筛孔直径0.8 cm)获得的种子数量最多,10 kg种子材料可获得937.3 g种子,种子的破损率也较小,为8.37%,种子的纯净度为88.33%,种子的发芽率高达92.33%,仅次于人工锤打脱粒法。
    Among the four metals, the root concentration of Cd was the highest, 2.46 times of the spiked concentration in the treatment of EDDS. The fraction of Cd extracted by 0.1 mol·L-1 HAc was also the highest, 68.6%~96.9% of the spiked concentration in the soils.
    对于不同的金属而言,Cd的根系相对富集量比较高,可达外源添加浓度的2.46倍(EDDS处理组),其可交换态的相对含量也最高,可达外源添加浓度的68.6% ̄96.9%。
    The better transformation efficiency was obtained by using Agrobacterium tumefaciens strain LBA4404 with OD600 as 0.5~0.7 and with 10 min infection,3d co-cultivation and the proper concentration of wounded tobacco leaf extract(1.0 mL/50 mL).
    遗传转化影响因素结果表明,菌液OD600为0.5-0.7、侵染时间10min、共培养时间3d、每50mL菌液添加烟草提取物1.0mL可获得较好的转化效果。
    In this paper, the approach of microwave is adopted to extract the flavonol from roses with large petals and small ones as well as make available their respective content of flavone: 71.4736mg/g and 71.0636mg/g, with the RSD(n=9) of 0.5972% and 0.5852% respectively.
    采用微波法从大瓣玫瑰花蕾和小瓣玫瑰花蕾中提取黄酮类化合物,并测定了黄酮含量,分别为71.4736mg/g、71.0636mg/g,RSD(n=9)分别为0.5972%、0.5852%。
    The Fe2+-H2O2-Rhodamine B analyzing system is also thereby applied to study the eliminating capacities of the ·OH of the two petals' extract, and the result show that the two varieties of extract both have a strong eliminating capacity of the ·OH.
    利用了Fe2+-H2O2-罗丹明B分析体系,研究了两种玫瑰花蕾提取物清除羟自由基能力,实验结果表明,两种玫瑰花蕾提取物都具有较强的清除·OH的能力。
    The result is,the best extract condition was pressure 35 MPa,temperature 50℃,time 60min.
    以萃取物得率评价,结果表明,最佳萃取条件是:压力35MPa、温度50℃、时间60min。
    Pseudo-Jacobi(p=4,q=3)-Fourier Moments(PJFM's) were applied to extract image featurs from six microscopic characteristic original photos of flos carthami,which included farina,fragment of secretory pipe,top cell of petal,petal cell,stigma cell,middle cell of anther in this paper.
    本研究用变形雅可比(p=4,q=3)-傅立叶矩(PJFM’s),对草红花粉末涂片的花粉粒、分泌管碎片、花瓣细胞、花药中部细胞、花瓣顶端细胞、花柱头细胞等六个显微结构原始照片进行特征提取,发现不同特征点的不变矩值有着明显的区别,相同显微特征点不同方位、不同灰度、不同大小的变形图像的不变矩值几乎相同。
    The optimal conditions for the extracting flavonoids from tartary buckwheat seeds were microwave power of 360 W,60% alcohol,ratios of solid to solvent of 1∶60 and extraction time of 4 min.
    微波提取苦荞麦黄酮的较优组合为:微波功率360 W、乙醇浓度60%、固液比1∶60、萃取时间4 min。
    The contents of polysaccharides and reducing sugar were 3.92%, 1.11% in the crude extract, and 84.12%, 1.59% after purification, respectively.
    纯化后,多糖质量分数为84.12%,纯度提高了约21倍,还原糖质量分数为1.59%。
    To develop a rapid DNA extraction method,the quality of DNA was examined with soybean dry seeds as materials,adding proteinase K,NP-40 and Tween-20 to SDS extracting solution,and reducing the chloroform/isoamyl extraction times.
    为了探寻大豆干种子中的DNA快速提取方法,以2个大豆品种的干种子为材料,在SDS提取液中加入蛋白酶K、NP-40、Tween-20情况下,并减少氯仿/异戊醇的抽提次数,研究对提取DNA质量的影响。
 

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