淀粉度

The methods determing the groups in the modified starch have been developed, that is acidimetry for the basicity of acidified starch, complexing titration for the substitution degree of carboxymethyl starch, and heat paste titration and carbonyl process respectively for the carboxyl and nitrogen of oxidized starch.

建立了以酸碱滴定测定酸化淀粉的碱量、络合滴定法测定羧甲基淀粉的取代度、热糊滴定和羟胺法测定氧化淀粉中羧基及羰基、消化定氮测定阳离子淀粉等几种变性淀粉的基团分析方法。

The results showed that the different varieties have different starch contents and different gelatinization characteristics.

结果表明，品种间淀粉含量不同，淀粉糊化特性也存在一定的差异，YA03-3、YA03-4、云薯101、YA03-6和YA03-7不仅淀粉含量高，产量高，且淀粉的峰值粘度也较高，其中，YA03-6的淀粉同时还表现凝胶性较强，硬度相对较小的特性。

Meanwhile,the 'Thai maranta' showed high peak viscosity,lower setback,lower final viscosity,but higher breakdown.On the other hand,maranta showed l...

竹芋淀粉与其它薯类淀粉比较，表现为峰值粘度低于马铃薯和芭蕉芋淀粉，但其热稳定性高，淀粉糊硬度低。

Some physicochemical properties of Euryale ferox Salisb starch were studied,including granule microphotograph,X-ray diffraction pattern,content of amylose and amylopectin starch,gelatinization temperature,swelling power and solubility,paste transparency,freeze-thawing stability,sediment.

对肇实淀粉的颗粒形貌、X-射线衍射谱图、直链与支链淀粉含量、糊化温度、溶解度与膨胀度以及糊的透明度、冻融稳定性、凝沉性进行了研究，并与玉米淀粉进行了比较，为肇实淀粉的应用提供了一定的理论基础。

Starch has gelatinization effect in hot water, elevatory and amylaceous grain is easier when temperature burst, the degree of polymerization that brings about starch is reduced, the opposite element quantity of amylaceous grain is reduced, as the change of amylaceous grain, the package that iodine and starch fashion adds up to content color to also can produce a series of change.

淀粉在热水中具有糊化功能，温度时升高淀粉颗粒更轻易破裂，导致淀粉的聚合度降低，淀粉颗粒的相对分子量减小，随着淀粉颗粒的变化，碘和淀粉形成的包合物颜色也会发生一系列变化。

The spectra of X-ray diffract revealed that its crystal is B type and the value is about 18%, far lower than that of ordinary maize starch. With the method of chemistry modification, we modified the amylose starch with acetates. The result showed that the best reaction condition was at the ratio of 1:5.3 (glucose: acerbity), with MSA 1.5% catalyzer, at 75℃ for 3 h.

利用化学改性法对高直链玉米淀粉进行醋酸酯化改性，最佳反应条件为，淀粉葡萄糖基与酸的质量比1：5.3、催化剂甲磺酸用量为体系的1.5%、反应温度75℃、反应时间3 h，在此条件下可制备取代度为2.84的醋酸酯淀粉，比普通玉米淀粉高0.78。

In this article, high DS and low viscosity carboxymethyl starch was prepared in aqueous media through the reaction between corn starch with acid treatment and etherifying agent, the effect of acid treatment time, liquor/material ratio, the amount of sodium hydroxide, the amount of monochloroacetic acid, etherification time, and reaction tempera.

以玉米淀粉为原料，采用酸化-醚化复合变性的方法在水相中制备高取代度低黏度羧甲基淀粉，探讨了酸化时间、液固比、NaOH用量、ClCH2COOH用量、醚化反应时间、反应温度对羧甲基化过程的影响，研究发现，对原淀粉进行酸化，可以在不增加其它反应试剂用量的基础上提高产物的取代度，但是酸化时间不应过长。

Carboxymethyl starch was prepared from cornstarch by using a dry method,and the molecular structure,granule configuration and crystallizability of the carboxymethyl starches with different substitution degree were investigated by using ultrared spectrograph,electro scanning microscope and x-ray crystallograph.

张慧，董海洲，侯汉学，刘传富，干法羧甲基化反应对玉米淀粉颗粒性质影响的研究以玉米淀粉为原料，干法制备羧甲基淀粉，并利用红外光谱仪、扫描电子显微镜和X-射线衍射仪对不同取代度的羧甲基淀粉的分子结构、颗粒形貌及结晶性进行了研究。

The findings indicated that, the Japonica rice RVA profile characteristic is the concurrently Indica rice nature with the glutinous RVA profile characteristic continuously change body, assumes 5 kind of characteristics class groups, the few idioplasms has the glutinous starch RVA profile characteristic, also has some idioplasms for the starch RVA profile characteristic of Indica rice, the partial idioplasms have the high quality RVA profile characteristic, namely setback for the negative value, the overwhelming majority idioplasm RVA profile characteristic approx

研究结果表明，粳稻的RVA谱特征是兼具籼性与糯性RVA谱特征的连续变化体，呈5种特征类群，少量种质具有糯性淀粉RVA谱特征，即还有一些种质表现出为籼性淀粉RVA谱特征，部分种质具有优质的RVA谱特征，即消减为负值，绝大多数种质的RVA谱特征(约占样本数的85%)，其曲线的显著特征为消减值在250-1000cp。籼稻的RVA谱特征的分化亦呈现为多态性，主要表现为峰值粘度、最终粘度与消减值的分异性，在籼稻种质材料中主体RVA谱类型的特征表现为消减值在1000-2000cp间。特异的分化出3种类型，第一类表现为峰值粘度与消减值均在2000cp

Manufacture of high strength and quick drying starch adhesive at room temperature;2. The quick drying adhesive was developed by adding different driers.

以玉米淀粉为原料，采用氧化法，在对淀粉粘合剂粘度影响因素考察的基础上，运用正交设计，用L_9(3)~4正交表安排实验，得到各因素对粘度影响的主次顺序，以及最佳工艺条件，并在此基础上，分别加入不同快干剂，研制出性能稳定、干燥速度快的淀粉粘合剂，以满足高速瓦楞纸板生产线的要求。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。