云厚朴SFE-CO2萃取物中厚朴酚与和厚朴酚的热稳定性考察     

魏泽英  朱培芳  孙海林  李丽梅  杨文标 《保鲜与加工》2015,(3):154-158

温度是影响云厚朴提取物稳定性的主要因素,本研究考察云厚朴提取物的热稳定性。采用高效液相色谱法,测定云厚朴SFE-CO2(二氧化碳超临界流体萃取)工艺萃取物中的和厚朴酚、厚朴酚在不同温度干燥时的含量变化并得出降解规律,干燥时降解为一级反应,在100 ℃降解较快。采用恒温加速实验,得出SFE-CO2萃取液中的和厚朴酚、厚朴酚室温25 ℃贮存期分别为1 125.6 h和975.7 h。在制剂生产中,云厚朴SFE-CO2萃取物不宜长时间贮存,以减少有效成分损失;由于热不稳定性,高温干燥会导致制剂质量不稳定,降低药效,应在较低温度下干燥。  相似文献   

金针菇多糖的提取及含量测定   总被引：2，自引：0，他引：2  

徐亚杰  宁波  王磊  张锦玉  逯家富 《农产品加工．学刊》2007,(9):70-71

探讨了用温度70℃热水提取、sevag法除蛋白、乙醇分级沉淀提取金针菇多糖,以及用硫酸-蒽酮法测定其含量的方法。该方法测得多糖的总收率为金针菇湿质量的0.11%,测定多糖的线性范围为1～16μg/mL,对金针菇多糖含量测得的RSD小于2.24%,回收率为97.6%～102.8%。  相似文献   

SOFTWARE DESIGN FOR APPLE II MICROCOMPUTER TO ACHIEVE COMMON CHINESE CHARACTER INFORMATION PROCESSING WITHOUT CHINESE CHARACTER CARD     

Cao Huiyu 《保鲜与加工》1988,(4)

  相似文献   

An Information System for Vehicle Transport Management     

Zeng Fanqi Zhou Ming Wang Yong 《保鲜与加工》1993,(4):150-154

This paper proposes a model framework, which describes the function requirements and the common characterstics of vehicle transport management. With the frame, a computer vehicle transportation managerment information system(QCMIS)is in troduced here and it has already been put into practice. The key technical points is also explained in the paper.  相似文献   

菲牛蛭抗凝血活性物质提取方法研究     

汪波  杨思毅  周子华  陈鑫  颜亨梅 《中国农学通报》2015,31(20):51-54

为对菲牛蛭抗凝血活性物质的提取进行优化,通过采取不同方法对菲牛蛭活体(6种)、干体(6种)及唾液腺分泌物(3种)进行提取得出最适提取方法。结果表明对于菲牛蛭活体和干体均是采取80%预冷丙酮提取得到的抗凝血物质含量高,最高分别达至(61.20±1.13)AT-U/g和(89.19±1.13)AT-U/g;对于菲牛蛭唾液腺分泌物则是采取10%的三氯乙酸提取得到的抗凝血物质含量高,最高达(24.41±0.98)AT-U/g。研究结果得出了适合菲牛蛭活体、干体和唾液腺分泌物中提取抗凝血活性物质的最适方法,有利于推动水蛭素的大规模生产和广泛的临床应用。  相似文献   

Craft to Study Ultrasonic Eextraction of the Alkaloid Composition From Sophara Flavescens Ait     

ZOU Shu-shu  WANG Gui-xue 《保鲜与加工》2007,(7):130-133

  相似文献   

Model of Financing Strategy     

FU Qiang  PENG Long-ze  ZHANG Tian-yong 《保鲜与加工》2006,(3):143-146

Considering information asymmetry between inside and outside of the firms,this paper discusses the financing strategy of M&A,and builds a model.According to the model,we can see that the firm with relatively expected low-productivity will choose equity financing for M&A,and the firm with relatively expected high-productivity will choose debt financing for M&A,and the firm with expected medium-productivity will not choose financing from outside.In the case of undeveloped capital market and financing tools in China,the conclusion of the model has some extent significance for helping firms to choose financing strategy for M&A rationally.  相似文献   

On the Development of Urban Spatial Structure in the Information Age     

LI He-ping  YAN Ai-qiong 《保鲜与加工》2002,(4):1-6

Today the information globalization is the trend of society development. The information technology has great influence not only on the mode of life and production, but also on the urban social and economic structure. In order to fit in with the change in this regard, the urban land-use distribution, residential mode, traffic pattern and so on should be changed correspondingly. Therefore, this change will lead to the development and evolution of whole urban spatial structure. In this paper, the development tendency of urban spatial structure in the information age is analyzed and some proposals on city planning and construction are put forward.  相似文献   

Enterprise Information Engineering Model and Its Integrated Support Environment     

TAN Wen-an 《保鲜与加工》2004,(12):73-77

By analyzing the process of enterprise information engineering construction and intra relationship among information system requirement, business process modeling, application system constructing and project management, one of 4 meta model composed of requirement engineering, process engineering, application system engineering and support engineering is proposed for enterprise information engineering. The developments and applications of the business processes and its application systems are integrated into the same development space and application space. Basing on this, a prototype system composed of requirement modeling environment, business process modeling environment, application system modeling environment, and support engineering environment has been designed and built, which is used for supporting enterprise information engineering constructing. It is valued for the enterprise information engineering construction in our country.  相似文献   

Office Automation System for the University     

LI Hu  CAO Zhen-sheng 《保鲜与加工》2001,(3):150-152

The solution of the office automation system for the universities is given. The detail steps on developing an office automation system through Lotus Notes are described.  相似文献