查询词典 chitosan

METHODS By the means of viscometry , the effects of reaction time , chitosan and acetic acid concentration on the hydrolytic velocity of chitosan by ultrasonic wave were investigated .

采用粘度测定法，探讨了超声波辐射时间与壳聚糖粘度的关系以及壳聚糖的浓度，醋酸的浓度对降解速度的影响。

Degree of deacetylation of the three different chitosan are determined by acid -base titration or acid -base conductometric titration.The MW of chitosan I and II by viscometry is 1.0 X 106and 9.5 X 105,respectively.

分别采用酸碱指示剂滴定和电导滴定法测定了壳聚糖的脱乙酰度，后者测定结果大于前者；应用粘度法测定原料壳聚糖Ⅰ和Ⅱ的粘均分子量分别为：1.0×10~6、9.5×10~5。

In this paper, the application of chitosan in fruit wine as stabilizer and clarifier was illustrated. Besides, the research progress in the application of chitosan in grape wine, cider, waxberry fruit wine, and loquat wine was introduced respectively.

综述了壳聚糖作为澄清剂和稳定剂在果酒中的应用，分别介绍了其在葡萄酒、苹果酒、杨梅酒、黑加仑酒、枇杷酒中的应用研究进展。

The effects of degree of acylation of chitosan and addition of lecithin on the behavior of O, O-dilauroyl chitosan self-assembled vesicles were studied in this work.

考察了3种不同酰化取代度的O， O–双十二酰化壳聚糖自组装泡囊的体外药物（维生素B12）释放行为。

The amido of Chitosan and thecarboxyl of acrylic acid made Chitosan-acrylic acid hydrogel pH-sensitive andion-sensitive.

壳聚糖的氨基，聚丙烯酸的羧基，使得壳聚糖-丙烯酸水凝胶具有pH和离子敏感性。

Spraying with chitosan of different concentration significantly increased the content of chlorophyll ,anthoxanthin ,chlorogentic acid, polyphenal ,soluble protein and total soluble sugar of Broccoli flowers. 40 mg L-l chitosan showed the most remarkable effet,compared to control, the content of chlorophyll ,anthoxanthin ,chlorogentic acid, total soluble sugar and soluble protein of treated Broccoli flowers increased by 64.4%,282.5%,35.6%,16.2% 22.7% respectively.PAL and PPO are key enzymes in synthesize of phenolics.No relation was found between phenolics synthesize and PAL activity in Broccoli flowers,but it showed positive relation between phenolics synthesize and PPO activity.

研究表明，本研究中，不同浓度几丁聚糖喷施对青花菜花球的叶绿素、类黄酮、绿原酸、多酚总量、可溶性蛋白及可溶性总糖的含浙江大学硕卜学位论文(2004)量有显著增加，其中以浓度为40mgL一'影响最为显著，花球中的叶绿素、类黄酮、绿原酸、可溶性总糖、可溶性蛋白分别较对照提高64.4%、282.5%、35.6%、 16.2%、22.7%，苯丙氨酸解氨酶、多酚氧化酶是酚类物质合成中关键酶，花球内酚类物质合成与苯丙氨酸解氨酶的活性没有一定的相关性，而与多酚氧化酶的活性呈正相关。

Carboxy methyl chitosan which has a good water-solubility, moreover has stronger antibacterial activities than chitosan.

为了提高棉织品的抗菌保健功能，已有不少壳聚糖改性研究工作，如羧甲基壳聚糖，它不仅具有较好的水溶性，而且比壳聚糖具有更强的抗菌性。

Chitosan-celite complex carriers with high magnetism were made using co-precipitation of chitosan with nanometer Fe〓O〓 and celite.

本文还采用壳聚糖同磁性纳米四氧化三铁和硅藻土共沉淀的简单方法，制备得到较强磁性的复合载体。

The fluorescence intensity of these chitosan derivatives increases and decreases with the different chromophoric group in the polymers\' long-chain. The fluorescence properties of these chitosan derivatives are also changed with the different pH, solvent and concentration

首次考察了分子量为104数量级的壳聚糖衍生物的荧光性能与其侧链上的生色团、助色团的关系，以及在不同浓度、不同酸度、不同溶剂中它们的荧光性能的变化情况来源：33ddABC论文网www.abclunwen.com

Accuracy of determination of deacetylation degree of chitosan by two abrupt change conductometric titration was studied, and effects of chitosan solution concentration, viscosity and deacetylation degree on the result of equivalence point were also investigated.

结果表明：壳聚糖样品质量浓度控制在2～6g/L，利用双突跃电位滴定法可以测定壳聚糖的脱乙酰度，不同样品脱乙酰度测定结果RSD小于0.61%(n=3)，该方法具有较高地准确性，可以用于壳聚糖生产和加工过程中的质量控制与检测

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。