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113 Newest Publications about the topic colorants

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Protecting and stimulating effect on the degradation of eosin lakes. Part 1: Lead white and cobalt blue

20-May-2018 | Author(s): Alba Alvarez-Martin, Koen Janssens, Microchemical Journal, 2018

Publication date: September 2018 Source:Microchemical Journal, Volume 141 Author(s): Alba Alvarez-Martin, Koen Janssens An important problem encountered during the preservation of paintings and other artworks is the fading of the original colors due to exposure of the colorants to ...

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Colours and pigments in late ukiyo-e art works: A preliminary non-invasive study of Japanese woodblock prints to interpret hyperspectral images using in-situ point-by-point diffuse reflectance spectroscopy

07-May-2018 | Author(s): Josefina Pérez-Arantegui, David Rupérez, David Almazán, Nerea Díez-de-Pinos, Microchemical Journal, 2018

Publication date: June 2018 Source:Microchemical Journal, Volume 139 Author(s): Josefina Pérez-Arantegui, David Rupérez, David Almazán, Nerea Díez-de-Pinos Dyes and pigments have been used in traditional Japanese woodblock printings in the ukiyo-e style for several centuries. ...

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Molecules, Vol. 23, Pages 991: Isolation of High Purity Anthocyanin Monomers from Red Cabbage with Recycling Preparative Liquid Chromatography and Their Photostability

24-Apr-2018 | Chen, Yijun ; Wang, Zikun ; Zhang, Hanghang ; Liu, Yuan ; Zhang, Shuai ; Meng, Qingyan ; Liu, Wenjie, Molecules, 2018

Molecules, Vol. 23, Pages 991: Isolation of High Purity Anthocyanin Monomers from Red Cabbage with Recycling Preparative Liquid Chromatography and Their Photostability Molecules doi: 10.3390/molecules23050991 Authors: Yijun Chen Zikun Wang Hanghang Zhang Yuan Liu Shuai ...

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Application of natural plant extracts as colorants, preservatives, and anti‐listerial agents in processed fish products

09-Jan-2018 | Ahmed A. Tayel, Nashwa A. Almabady, Noha M. Sorour, Amany M. Diab, Journal of Food Safety, 2018

Abstract The anti‐listerial activity of various plant extracts was investigated, qualitatively and quantitatively against Listeria monocytogenes strains. The extracts of Punica granatum peels (PPE) and Hibiscus sabdariffa calyxes (RCE) exhibited the most potent antibacterial activity. The ...

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Application of natural plant extracts as colorants, preservatives, and anti‐listerial agents in processed fish products

09-Jan-2018 | Ahmed A. Tayel, Nashwa A. Almabady, Noha M. Sorour, Amany M. Diab, Journal of Food Safety, 2018

Abstract The anti‐listerial activity of various plant extracts was investigated, qualitatively and quantitatively against Listeria monocytogenes strains. The extracts of Punica granatum peels (PPE) and Hibiscus sabdariffa calyxes (RCE) exhibited the most potent antibacterial activity. The ...

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Enhanced production of carotenoids and lipids by Rhodococcus opacus PD630

27-Dec-2017 | Tharatron Suwaleerat, Anusith Thanapimmetha, Maythee Srisaiyoot, Yusuf Chisti, Penjit Srinophakun, Journal of Chemical Technology & Biotechnology, 2017

Abstract BACKGROUND Low‐value waste organics can be upgraded to higher‐value products using microorganisms. The bacterium Rhodococcus opacus PD630 was used to produce colorants (carotenoids) and lipids (potential fuel oils) from glycerol. RESULTS Submerged culture of R. opacus PD630 ...

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Customizing photoredox properties of PXX‐based dyes through energy level rigid shifts of frontier molecular orbitals

12-Dec-2017 | Andrea Sciutto, Andrea Fermi, Andrea Folli, Tommaso Battisti, Joseph Beames, Damien Murphy, Davide Bonifazi, Chemistry - A European Journal, 2017

Here we describe the synthesis of electron‐rich PXX derivatives in which the energy levels of the excited states have been tailored through the insertion of imide groups. This has allowed the development of a new series of oxygen‐doped photoredox‐active chromophores with improved oxidizing and ...

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Ultra-High-Throughput Analytical Strategy Based on UHPLC-DAD in Combination with Syringe Filtration for the Quantitation of Nine Synthetic Colorants in Beverages: Impacts of Syringe Membrane Types and Sample pH on Recovery

07-Nov-2017 | Je Young Shin; Mun Yhung Jung, Journal of Agricultural and Food Chemistry, 2017

An ultra-high-throughput approach based on ultra-high-performance liquid chromatography with diode array detection (UHPLC-DAD) in combination with simple syringe filtration was successfully developed and validated for the quantitation of nine synthetic colorants in beverages. The recoveries of ...

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Formation of Polyphenol-Denatured Protein Flocs in Alcohol Beverages Sweetened with Refined Cane Sugars

27-Oct-2017 | Gillian Eggleston; Alexa Triplett, Journal of Agricultural and Food Chemistry, 2017

The sporadic appearance of floc from refined, white cane sugars in alcohol beverages remains a technical problem for both beverage manufacturers and sugar refiners. Cane invert sugars mixed with 60% pure alcohol and water increased light scattering by up to ∼1000-fold. Insoluble and soluble ...

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Formation of Polyphenol-Denatured Protein Flocs in Alcohol Beverages Sweetened with Refined Cane Sugars

27-Oct-2017 | Gillian Eggleston; Alexa Triplett, Journal of Agricultural and Food Chemistry, 2017

The sporadic appearance of floc from refined, white cane sugars in alcohol beverages remains a technical problem for both beverage manufacturers and sugar refiners. Cane invert sugars mixed with 60% pure alcohol and water increased light scattering by up to ∼1000-fold. Insoluble and soluble ...

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