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Natural Colorants: Food Colorants from Natural Sources
Annual Review of Food Science and Technology, 2017The color of food is often associated with the flavor, safety, and nutritional value of the product. Synthetic food colorants have been used because of their high stability and low cost. However, consumer perception and demand have driven the replacement of synthetic colorants with naturally derived alternatives.
Gregory T, Sigurdson +2 more
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Physica Status Solidi (a), 1979
The absorption spectra of natural, colored fluorites (CaF2) are analyzed and compared with the presence of chemical impurities such as rare-earth elements, yttrium, and sodium located within the fluorite structure. Mechanisms for charge compensation of monovalent and trivalent ions are shown to be provided by color centers and related substitutional or
Birsoy R., Murr L.E.
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The absorption spectra of natural, colored fluorites (CaF2) are analyzed and compared with the presence of chemical impurities such as rare-earth elements, yttrium, and sodium located within the fluorite structure. Mechanisms for charge compensation of monovalent and trivalent ions are shown to be provided by color centers and related substitutional or
Birsoy R., Murr L.E.
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Geometry and Color in Natural Images
Journal of Mathematical Imaging and Vision, 2002zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Vicent Caselles +2 more
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Scientific American, 2012
The author explores how an understanding of seven tactics used by animals to create colors may lead to the development of novel technologies. The author notes that scientists are beginning to have a fuller understanding of how highly-organized nanostructures in living organisms manipulate light, such as those responsible for colors in bird feathers ...
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The author explores how an understanding of seven tactics used by animals to create colors may lead to the development of novel technologies. The author notes that scientists are beginning to have a fuller understanding of how highly-organized nanostructures in living organisms manipulate light, such as those responsible for colors in bird feathers ...
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Possibilities of color with the use of natural coloring applied in natural fibers
ENSUS2023 - XI Encontro de Sustentabilidade em Projeto, 2023Chemical dyes applied to textiles in the textile processing stage bring serious damage to the environment and human beings involved in the processes. The use of natural dyes in place of chemicals brings benefits in the social and environmental spheres, since highly polluting toxic chemicals are not used in their processes. Despite the importance of its
Cristine Silva Santos +4 more
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Understanding Colors in Nature
Pigment Cell Research, 1988There are two ways in which white light is transformed into colored light by interaction with matter: absorption and scattering. Absorption transforms light into other forms of energy, whereas scattering redirects it. Reflection, refraction, and diffraction are not distinct from scattering but rather are manifestations of it.
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Automatic Natural Image Colorization
2020We introduce a technique to automatically colorize natural grayscale images that combines both local and global features. Automatic colorization is a hard problem of computer vision and usually requires user interactions such as human-labelled color scribbles or reference images to achieve proper results.
Tan-Bao Tran, Thai-Son Tran
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Natural color image segmentation
Proceedings 2003 International Conference on Image Processing (Cat. No.03CH37429), 2004A new method for natural color image segmentation using integrated features is proposed in this paper. Edges are first detected in term of the high phase congruency in the gray-level image. K-means cluster is used to label long edge lines based on the global color information to estimate roughly the distribution of objects in the image, while short ...
Xu Jie, Shi Peng-fei
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SPIE Proceedings, 2002
Color is a visible aspect of objects and lights, and as such is an objective characteristic of our phenomenal world. Correspondingly also objects and lights are objective, although their subjectivity cannot be disregarded since they belong to our phenomenal world. The distinction between perception and sensation deals with colors seen either in complex
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Color is a visible aspect of objects and lights, and as such is an objective characteristic of our phenomenal world. Correspondingly also objects and lights are objective, although their subjectivity cannot be disregarded since they belong to our phenomenal world. The distinction between perception and sensation deals with colors seen either in complex
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Nature’s Palette: The Search for Natural Blue Colorants
Journal of Agricultural and Food Chemistry, 2014The food and beverage industry is seeking to broaden the palette of naturally derived colorants. Although considerable effort has been devoted to the search for new blue colorants in fruits and vegetables, less attention has been directed toward blue compounds from other sources such as bacteria and fungi.
Andrew G, Newsome +2 more
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