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环糊精是通过与其包合来改善药物的性质的。本文综述了近年来环糊精及其衍生物在药剂上的应用 ,包括增加脂溶性药物的溶解度 ,提高药物稳定性 ,使液体药物固体化 ,作为药物的吸收促进剂 ,作为速、缓释制剂的载体 ,作为多肽、蛋白类药物的载体和靶向制剂的载体等。 相似文献
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阐述了手性化合物分离的必要性,以及环糊精(CD)及其衍生物(CDs)的结构特点和作为气相色谱固定相的可能性,并简要概括CDs在气相色谱手性分离中的应用。 相似文献
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新型环糊精衍生物的合成、超分子组装及应用 总被引:1,自引:0,他引:1
李海峰 《合成材料老化与应用》2019,48(5)
简要介绍了环糊精化学的产生、发展、结构特征、性能及应用。详细介绍了:①新型环糊精衍生物的合成及在分析分离科学中的应用;②新型环糊精衍生物的合成及在材料科学中的应用;③新型环糊精衍生物的合成及在医药学中的应用。并对环糊精化学的发展进行了展望。 相似文献
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生物柴油不仅是一种环境友好的绿色能源,还是一种可再生的油脂化工基础原料。在表面活性剂、塑料助剂、皮革加脂剂、润滑油和醇酸树脂等领域具有很好的应用前景。文中介绍了生物柴油深加工的化学反应、衍生物及其应用,指出皮革加脂剂和塑料助剂是最适合生物柴油厂进行深加工的项目。 相似文献
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近红外光谱的发展背景及在石油行业中的应用 总被引:1,自引:0,他引:1
近红外光谱分析技术是一种快速、无损、便携的现代分析技术,非常适合快速的质量检测。我国对近红外光谱分析技术的研究及应用起步比较晚,先后在20世纪70-80年代掀起两次引进热潮。由于近红外光在常规光纤中良好的传输特性,使近红外光谱在线分析领域得到很好应用,并取得极好的社会和经济效益,从此近红外光谱步入一个快速发展的时期。本文主要综述了近红外光谱的历史背景,发展现状,以及近红外光谱在石油行业中的应用情况。 相似文献
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Pulsed electric field (PEF) is an innovative technology, which can be successfully combined with solid/liquid expressing of juice from biological materials. The fresh juicy plants contain the juice in closed cells. The application of PEF ensures the electropermeabilization of cellular membranes, which facilitates the expulsion of liquid from the interior of cells. This article describes the influence of PEF on the kinetics of juice extraction from the layer of sugar beet particles expressed at a constant rate. Experimental study was carried out using a laboratory filter-press cell connected to a PEF treatment system. The PEF was applied by two different modes: as a pretreatment operation before pressing and as a treatment during pressing. The application of PEF to nonpressurized cake leads to increase of energy consumption and higher applied voltage. The PEF treatment of excessively pressurized cakes enhances the juice yield; however, the expressing of juice is significantly delayed. The best result is obtained when the sugar beet tissue is treated with PEF at 1.5-5 bars. The influence of PEF parameters on the juice yield was also studied. The intensity of PEF was varied from 0 to 1000 V/cm and the number of pulses was varied between 0 and 1000. It was established that the optimal parameters of PEF after the cake pressurization at 5 bar were in the next range: intensity of PEF E = 500 V/cm and duration of PEF application 0.03-0.05 s. 相似文献
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《Drying Technology》2013,31(10):2395-2408
Abstract Pulsed electric field (PEF) is an innovative technology, which can be successfully combined with solid/liquid expressing of juice from biological materials. The fresh juicy plants contain the juice in closed cells. The application of PEF ensures the electropermeabilization of cellular membranes, which facilitates the expulsion of liquid from the interior of cells. This article describes the influence of PEF on the kinetics of juice extraction from the layer of sugar beet particles expressed at a constant rate. Experimental study was carried out using a laboratory filter-press cell connected to a PEF treatment system. The PEF was applied by two different modes: as a pretreatment operation before pressing and as a treatment during pressing. The application of PEF to nonpressurized cake leads to increase of energy consumption and higher applied voltage. The PEF treatment of excessively pressurized cakes enhances the juice yield; however, the expressing of juice is significantly delayed. The best result is obtained when the sugar beet tissue is treated with PEF at 1.5–5 bars. The influence of PEF parameters on the juice yield was also studied. The intensity of PEF was varied from 0 to 1000 V/cm and the number of pulses was varied between 0 and 1000. It was established that the optimal parameters of PEF after the cake pressurization at 5 bar were in the next range: intensity of PEF E = 500 V/cm and duration of PEF application 0.03–0.05 s. 相似文献
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表面活性剂与环糊精的相互作用及在日化工业中的应用 总被引:7,自引:0,他引:7
讨论了与环糊精作用后表面活性剂物理化学性质的变化,并对主客体mol比进行了探讨,对环糊精-表面活性剂体系的理论意义和实际应用进行了细致的总结。 相似文献
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生物传感器的发展应用及前景 总被引:1,自引:0,他引:1
随着信息技术与生物工程技术的发展,生物传感器得到了极为迅速的发展,当今各发达国家都把生物传感器列为21世纪的关键技术,给予高度的重视。生物传感器不仅广泛用于传统医学领域,推动医学发展,而且还在空间生命科学、食品工业、环境监测和发酵工程等领域广泛应用。 相似文献
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表面活性剂在油田中的应用 总被引:9,自引:0,他引:9
综述了表面活性剂在油田中的应用。在钻井中 ,表面活性剂用作起泡剂、乳化剂、页岩抑制剂、润滑剂等 ;在采油中 ,表面活性剂用作驱油剂、培水剂、酸化添加剂、压裂添加剂、防蜡剂、乳化降粘剂、解堵剂等 ;在原油集输中 ,表面活性剂用作破乳剂、消泡剂、除油剂、防垢剂、缓蚀剂、杀菌剂等。同时介绍了油田用表面活性剂的发展趋势。 相似文献