Spectrophotometer with diode array detector (DAD)

其不稳定成分如多不饱和脂肪酸的氧化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质量。此外，食物中存在的有益抗氧化剂是由某些维生素、少量生物活性物质，如酚类/多酚和类胡萝卜素等提供的。此外，这些生物活性物质在促进健康和减少疾病风险方面的效果通常在体外和体内系统中进行评估：对所涉及的影响/参数的监测和评估通常需要对感兴趣的成分进行分析确定。在几乎所有这项研究中，紫外可见范围内的分光光度测定都是必要的。虽然大多数紫外可见仪器通过逐渐扫描整个所需的波长范围来跟踪事件的进程，但二极管阵列检测(DAD)将同时照射不同波长的光穿过样品，因此提供了好处，特别是对于非常敏感的材料。该设备将用于日常研究，包括正在进行的和计划在营养食品和功能食品研究的不同领域进行的研究，其结果将对基础科学和应用领域的进步具有重要意义。

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.