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Spectrophotometer with diode array detector (DAD)

带二极管阵列检测器 (DAD) 的分光光度计

基本信息

批准号：
407093-2011
负责人：
Shahidi, Fereidoon
金额：
$ 1.61万
依托单位：
Memorial University of Newfoundland
依托单位国家：
加拿大
项目类别：
Research Tools and Instruments - Category 1 (<$150,000)
财政年份：
2010
资助国家：
加拿大
起止时间：
2010-01-01 至 2011-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=472626
关键词：
Spectrophotometer diode array detector DAD

项目摘要

Changes in food quality arising from oxidation of their labile components such as polyunsaturated fatty acids not only affect their nutritive value, but also affect their flavour and sensory qualities. In addition, beneficial antioxidants present in foods are rendered by certain vitamins, minor bioactives such as phenolics/polyphenolics and carotenoids, among others. Furthermore, the effects of these bioactives in health promotion and disease risk reduction are routinely evaluated in in-vitro and in-vivo systems: The monitoring and evaluation of effects/parameters involved often requires analytical determination of components of interest. In almost all of this research, spectrophotometric determinations in the UV-visible range are necessary. While most UV-visible instruments follow the course of events by scanning light gradually through the entire desired wavelength range, diode array detection (DAD) would simultaneously shine light of different wavelength through the sample and hence provides benefits, especially for very sensitive materials. This equipment will be used for daily research, both on-going and planned in different areas of nutraceutical and functional food research, the outcome of which would be of significance for progress of fundamental science and in the applied areas.

由于多不饱和脂肪酸等不稳定成分的氧化而引起的食品质量变化不仅影响其营养价值，还影响其风味和感官品质。此外，食物中存在的有益抗氧化剂是由某些维生素、酚类/多酚类和类胡萝卜素等次要生物活性物质提供的。此外，这些生物活性物质在促进健康和降低疾病风险方面的作用通常在体外和体内系统中进行评估：所涉及的作用/参数的监测和评估通常需要对感兴趣的成分进行分析测定。几乎所有的研究都需要在紫外-可见光范围内进行分光光度测定。虽然大多数紫外-可见光仪器通过逐渐扫描整个所需波长范围的光来跟踪事件的进程，但二极管阵列检测 (DAD) 会同时将不同波长的光照射到样品中，从而提供优势，尤其是对于非常敏感的材料。该设备将用于营养保健品和功能食品研究不同领域正在进行和计划中的日常研究，其成果对基础科学和应用领域的进步具有重要意义。