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Fourier Transform Infrared Spectroscopy for Sepia Melanin

机译：棕褐色黑色素的傅立叶变换红外光谱

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Melanin is of interest as a model system of understanding disorder in biological systems. The biological functionality of melanin depends on disorder which is considered as its essential part. This property distinguishes melanin from other much more intensively studied biomolecule systems such as nucleic acid, proteins and carbohydrates. Melanins have been reported to have a diverse number of functions in the biosystem, including photosensitization, metal ion chelation, photoprotection to absorb a broad range of electromagnetic radiation, antibiotic, thermoregulation. Melanins are found all over the body from the skin and blood to the nervous system but the role of melanin in all these system is unclear. FTIR spectroscopy technique is usually one of the most preferred techniques used to give a correct assignment of the observed spectral characteristic of functional groups corresponding to different absorption bands which are responsible of the absorption. FTIR is the characterization technique which is both rapid, non-destructive and requires small sized samples. In the material to be analysed, chemical bonds vibrate at a characteristic frequency representative of their structure, bond angle and length. FTIR spectrometer is important for the interpretation of the structure, binding capacity, affinity and sites of metal ions in melanin. These are important factors for better understanding the metals melanin complexity and its consequences. The analysis of sepia melanin by FTIR reveals that there is existence of functional groups that can be responsible for the binding cites of different metallic ions leading to many new applications of sepia melanin.
机译：黑色素作为理解生物系统中疾病的模型系统而受到关注。黑色素的生物学功能取决于被认为是其基本组成部分的疾病。这种特性使黑色素与其他深入研究的生物分子系统（例如核酸，蛋白质和碳水化合物）区别开来。据报道，黑色素在生物系统中具有多种功能，包括光敏化，金属离子螯合，吸收大量电磁辐射的光保护，抗生素，温度调节。从皮肤，血液到神经系统，黑色素遍布全身，但黑色素在所有这些系统中的作用尚不清楚。 FTIR光谱技术通常是最优选的技术之一，用于对与负责吸收的不同吸收带相对应的官能团的观察光谱特性进行正确分配。 FTIR是快速，无损且需要小尺寸样品的表征技术。在待分析的材料中，化学键以代表其结构，键角和长度的特征频率振动。 FTIR光谱仪对于解释黑色素中金属离子的结构，结合能力，亲和力和位置非常重要。这些是更好地了解金属黑色素复杂性及其后果的重要因素。 FTIR对棕褐色黑色素的分析表明，存在官能团，这些官能团可导致不同金属离子的结合，从而导致棕褐色黑色素的许多新应用。

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