Recent developments in colorants for textile applications

Holme, I.

doi:10.1007/bf02699548

Cited by 33 publications

(18 citation statements)

References 92 publications

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“…This suggests there may be tightly bound anthocyanin pigments on blueberry pectinrich fractions. The natural anthocyanin may bind tightly on the surface of pectin-rich fractions through hydrogen bond and/or hydrophobic interactions, similar to staining mechanisms between natural colorants and cotton (Holme, 2002;Padayachee et al, 2013).…”

Section: Pectin Characterizationmentioning

confidence: 98%

Intermolecular binding of blueberry pectin-rich fractions and anthocyanin

2016

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Pectin was extracted from blueberry powder into three fractions of water soluble (WSF), chelator soluble (CSF) and sodium carbonate soluble (NSF). The fractions were incubated with cyanidin-3-glucoside (C3G), a mixture of five anthocyanidins (cyanidin, pelargonidin, malvidin, petunidin and delphinidin) or blueberry juice at pH 2.0-4.5. Free anthocyanins and bound anthocyanin-pectin mixtures were separated by ultrafiltration. WSF bound the least amount of anthocyanin at all pH values. CSF had stronger anthocyanin binding ability at pH 2.0-3.6, while NSF had stronger anthocyanin binding ability at pH 3.6-4.5. The pectin and anthocyanin binding was lowest at pH 4.5 and higher at pH 2.0-3.6. Nearly doubling C3G pigment content increased bound anthocyanin percentage by 16-23% at pH 3.6, which favored anthocyanin aromatic stacking, compared to 3-9% increase at pH 2.0. Ionic interaction between anthocyanin flavylium cations and free pectic carboxyl groups, and anthocyanin stacking may be two major mechanisms for pectin and anthocyanin binding.

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Section: Pectin Characterizationmentioning

confidence: 98%

Intermolecular binding of blueberry pectin-rich fractions and anthocyanin

2016

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“…(Dawson & Hawkyard, 2000;Holme, 2003). Accordingly, the present work is directed towards pre-modification of the wool component of wool/polyester blend fabric using monochlorotriazinyl b-cyclodextrin for attaining high performance union disperse prints with outstanding UV-protection functions.…”

Section: Introductionmentioning

confidence: 98%

Union disperse printing and UV-protecting of wool/polyester blend using a reactive β-cyclodextrin

Ibrahim

El-Zairy

2009

Carbohydrate Polymers

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“…Industrial anthraquinone dyes are synthesized on the basis of 9,10-anthraquinone, and they are characterized by high fastness and efficiency in the process of dying (Allen and McKellar 1978). Due to their structure, chemical properties, and method of application, those dyes are classified among acid dyes, mordant dyes, direct dyes, or reactive dyes (Holme 2002). To achieve fast color, the dyes are bound in the presence of a so-called chelating agent, i.e., salts of metals: Cr ?3 , Co ?3 , and Cu ?2 (Holme 2002;Uddin and Hossain 2010).…”

Section: Introductionmentioning

confidence: 99%

“…Due to their structure, chemical properties, and method of application, those dyes are classified among acid dyes, mordant dyes, direct dyes, or reactive dyes (Holme 2002). To achieve fast color, the dyes are bound in the presence of a so-called chelating agent, i.e., salts of metals: Cr ?3 , Co ?3 , and Cu ?2 (Holme 2002;Uddin and Hossain 2010). The anthraquinone dyes used in the textile industry are characterized by a high resistance to degradation and to changes in the physicochemical conditions of the environment, and therefore, they must be neutralized before they can be released into the environment.…”

Section: Introductionmentioning

confidence: 99%

Screening of microscopic fungi and their enzyme activities for decolorization and biotransformation of some aromatic compounds

Korniłłowicz-Kowalska

Rybczyńska

2014

Int. J. Environ. Sci. Technol.

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A total of 610 strains from 16 species of micromycetes with potential ligninolytic capabilities were isolated from soil, compost, and rotten wood, including 400 strains of soil origin. In the test of decolorization of agarized 0.06 % alizarin blue, 52 strains with high decolorization activity were selected. In liquid cultures with 0.2 % post-industrial lignin and 0.03 % alizarin blue, all of the selected strains showed three different extracellular peroxidase activities such as HRP-like, LiP, and MnP. Laccase was detected only in the cultures with alizarin blue, but those were trace amounts. In the decolorization of alizarin blue, the highest levels of activity were attained by HRPlike peroxidase. In the transformations of post-industrial lignin that included decolorization, colorization (darkening of substrate), and re-colorization, the highest levels of activity were attained by lignin peroxidase, especially at the start of the culture. The transformations of both dye substrates in the cultures of all 52 strains were accompanied by the release of glucose oxidase, but high activities of that enzyme were observed only in the presence of alizarin blue. Whereas in the presence of lignin the fungi under study synthesized catalase, the activity of which attained a maximum toward the end of the culture was negatively correlated with the activity of the remaining oxidoreductases under study. Among the 52 selected strains, three strains such as Haematonectria haematacocca BwIII43, K37, and Trichoderma harzianum BsIII33 were characterized by a high activity of decolorization.

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Recent developments in colorants for textile applications

Cited by 33 publications

References 92 publications

Intermolecular binding of blueberry pectin-rich fractions and anthocyanin

Intermolecular binding of blueberry pectin-rich fractions and anthocyanin

Union disperse printing and UV-protecting of wool/polyester blend using a reactive β-cyclodextrin

Screening of microscopic fungi and their enzyme activities for decolorization and biotransformation of some aromatic compounds

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