Anthraquinones Case Study

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Anthraquinones are group of compounds belong to quinone family that have attracted the attention due to their interesting photo-activity, highly light fastness properties, stability and superior brightness. They are widely prevalence in kingdom of fungi and could be alternative sources independent of seasonal and climatic conditions compared to plant sources. In this study, More than twenty fungal isolates were identified morphologically and molecularly and selected for pigment production purpose. Pigments were extracted and characterized by qualitative and quantitate analysis based on spectrophotometry, flourometry, high performance thin layer chromatography and liquid chromatography/ mass spectra. The fungal isolates were identifies as species belonged
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Pigments are compounds have capability of altering the colors of the transmitted and reflected light. Specific wavelength absorption enables them to give color to different substances.
Characterizations of colorants are due to their ability to emit or absorb light in the visible range
(400-700nm). Resulted color is due to chromophore (molecule-specific structure); this structure absorbs the energy and produce electron excitation from an external orbital to a higher orbital; the reflected colour is non absorbed energy that will be captured by the eye (Delgado, 2000).

1.2. Natural pigments vs. synthetic pigments

Natural pigments are formed by living organisms in nature such as plants, animals and microorganisms. In contrast, the synthetic pigments are resulted through number of chemical reactions. Natural pigments have significant functions in nature. In plants, the presence of chlorophyll pigment is vital for photosynthesis. However, plant cells produced flavonoid as a response to stress conditions as protection mechanism. In addition, light energy is converted into chemical energy in plant and fungal cells using quinones pigments. On the other

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