淀粉

The reasons for the different feeding effect of dietary starch sources were elucidated from both digestive tract and portal-drained viscera absorpt...

试验1不同淀粉来源对生长猪生产性能、养分消化率及血液生化指标的影响选择45头体重20±0.642kg杜×长×大三元杂交猪，以玉米、早籼稻糙米、糯米和抗性淀粉(Hi-maize-1043)作为淀粉来源，配合4个等氮、等能、等淀粉试验日粮和1个无氮日粮，进行为期30天的饲养试验和5×5拉丁方代谢试验。

This paper introduced the discovery of RNAi, amylosynthetase and quality improvement in amylocellulose content by RNAi, and the problem about RNAi technology also was preliminarily discussed in this paper.

重点从RNAi的发现与淀粉品质相关的淀粉合成酶及其利用RNAi在提高直链淀粉含量、降低直链淀粉含量等品质改良研究方面进行了回顾并对其存在的问题作了初步探讨。

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。

The feasibility of the equipment to measure Tg of amorphous powder is verified with a lot of experimentl results.The Tgs of some typical starches such as corn, pachyrhizus, buckwheat and pea in different water content are obtained by TDA. It is found that the water has plastic effect on starch and the Tg of starch decreases with the increase of water content. Through this study a quantitative expression is established to relate Tg and water content, and it is testified with experimental results for the sticky rice starch with different water content.

采用热膨胀法测定不同含水量下玉米、地瓜、荞麦、豌豆淀粉的玻璃化转变温度，得到了随着含水量的增加Tg降低的关系，探讨了水的增塑作用及影响机理，得到含水量与Tg的定量表达式，并用糯米淀粉的实验值对该关联式的有效性进行了验证，为预测不同含水量的淀粉的玻璃化转变温度及对淀粉的储藏加工提供了理论依据。

1D-SDS-PAGE eletrophoresis and molecular markers were employed to survey the Waxy proteins and Waxy genes in 312 winter wheat cultivars and lines from Chinese winter wheat and U.S.A. and Austrilia, 60 lines selected from the cross of Baihuomai and Norin 67 which was detected preliminarily to be waxy wheat with Iodine-dyeing-seed-section , 120 F2 plants from cross of Lu935031(Jimai19) and Yumai 47 . Amylose content and RVA properties were also recorded. The major results were presented below:1 The components of waxy protein subunits could be detected precisely by 1D-SDS-PAG Eelectro- phoresis.

以国内外冬播小麦品种312份、从白火麦×Norin 67中选育出经碘染籽粒剖面初步鉴定为糯性小麦的品系60份以及鲁935031×豫麦47的F2代120个单株为材料，利用1D-SDS-PAGE电泳技术研究了Waxy蛋白亚基组成，并利用分子标记检测了相应Waxy基因；检测了部分材料的直链淀粉含量和RVA特性等，分析了国内主要麦区小麦淀粉特性；结合生化标记、分子标记和淀粉特性三者各自的优势，探讨了快速、准确、简便筛选具有优良淀粉品质的小麦资源和品种的途径。

The analysis of scanning electromicroscope showed that it didn't obviously exist protein granules in rice starch pured by alcalase, and the solubility and swelling power of rice starch increased respectively after purification.

扫描电镜分析大米淀粉的超微结构显示，碱性蛋白酶纯化处理后的大米淀粉中未见明显的蛋白质颗粒存在。比较纯化前后的大米淀粉发现，大米淀粉经过碱性蛋白酶纯化后，其溶解度和膨润力都明显增加。

The analysis results of scanning electromicroscope showed that protein granules didn't obviously exist in rice starch pured by alcalase, and the solubility and swelling power of rice starch increased remarkably after purification.

扫描电镜分析大米淀粉的超微结构显示，碱性蛋白酶纯化处理后的大米淀粉中未见明显的蛋白质颗粒存在。比较纯化前后的大米淀粉发现，大米淀粉经过碱性蛋白酶纯化后，其溶解度和膨润力都明显增加。

After the graft reaction of ungelatinized starch, the morphology of the copolymers kept the aggregate structure of starch, and vinyl copolymer is grafted on its surface; while the gelatinized starch forms homogeneous polymer which is totally different with ungelatinized products.

结果表明，合成的淀粉接枝共聚物符合预期结构，未糊化的淀粉接枝后，聚合物保持团粒结构，表面接枝上了乙烯基均聚物；糊化的淀粉接枝后，形成了均匀的淀粉接枝共聚物。

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。

Adding sugar to the three raw starch and their low cross-linkedsuccinylated starch,the viscosity and thermal paste viscosity were rised eventually; addingcitric acid, lactic acid and sodium chlorid to the three raw starch and their low cross-linkedsuccinylated starch, the final viscosity and thermal paste viscosity showed varying degreesof decline.

加入蔗糖使的三种原料淀粉及其低交联酯化淀粉的热糊粘度与最终粘度有所上升；加入柠檬酸、乳酸、氯化钠后使得三种原料淀粉及其低交联酯化淀粉的热糊粘度和最终粘度呈现不同程度的下降。

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。