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Journal of Environmental Sciences 2011年第7期23卷 1135-1142页

作者： Rukhsana Satarn Qayyum Husai Department of Biochemistry Faculty of Life Sciences Aligarh Muslim University Faculty of Applied Medical Sciences Jazan University Jazan

Calcium-alginate pectin entrapped bitter gourd peroxidase （BGP） has been employed for the treatment of disperse dyes： disperse Brown 1 （DB 1） and disperse Red 17 （DR 17）. Peroxidase alone was unable to decolorize DR 17 and DB 1. However, the investigated dyes were decolorized maximally by BGP in the presence of 0.2 mmol/L redox mediator, violuric acid （VA）. A slow decrease in percent decolorization was observed when VA concentration was higher than 0.2 mmol/L which could likely be due to the high reactivity of its aminoxyl radical （ N–O . ） intermediate, that might undergo chemical reactions with aromatic amino acid side chains of the enzyme thereby inactivating it. Maximum decolorization of the dyes was observed at pH 3.0 and 40°C within 2 hr of incubation. Immobilized peroxidase decolorized 98% DR 17 and 71% DB 1 using 35 U of BGP in batch process in 90 min. Immobilized enzyme decolorized 85% DR 17 and 51% DB 1 whereas soluble enzyme decolorized DR 17 to 48% and DB 1 to 30% at 60°C. UV-visible spectral analysis was used to evaluate the degradation of these dyes and their toxicity was tested by Allium cepa test. The generally observed higher stability of the bioaffinity bound enzymes against various forms of inactivation may be related to the specific and strong binding of enzyme with bioaffinity support which prevents the unfolding/denaturation of enzyme. Thus entrapped peroxidase was found to be effective in the decolorization of the investigated dyes.

关键词： bitter gourd peroxidise (BGP) alginate pectin decolorization disperse dyes

Synthesis of Some New Diazo disperse dyes and Their Application on Dyeing of Polyester

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Journal of Chemistry and Chemical Engineering 2011年第2期5卷 150-158页

作者： Ahmed Zaky Sayed Mahmoud Sayed Aboul-Fetouh Hesham Sayed Nassar Chemistry Department University College P.O.Box 2064Umm Al-Qura University Makkah Al-Mokaramah Al-Aziziah 21955 Saudia Arabia Chemistry Department Faculty of Science A l-Azhar University Cairo 11884 Egypt

The synthesis of some new diazo disperse dyes containing a pyrazol-5-one was described. The structures of the new products have been deduced from elemental analysis and spectral dada such as UV-Vis absorption, IR, ^1H NMR, and MS spectroscopy. These dyestuffs gave satisfactory results when applied as disperse dyes to polyester fabric. The dyeing properties such as light fasmess, washing fastness and exhaustion studies have been investigated.

关键词： Pyrazolin-5-one disperse dyes disazo dyes dyeing exhaustion fastness

Novel azo dyes derived from 8-methyl-4-hydroxyl-2-quinolone:Synthesis,UV-vis studies and biological activity

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Chinese Chemical Letters 2013年第5期24卷 425-428页

作者： E.O.Moradi Rufchahi H.Pouramir M.R.Yazdanbakhsh H.Yousefi M.Bagheri M.Rassa Department of Chemistry Faculty of ScienceLahijan BranchIslamic Azad University Department of Chemistry Faculty of SciencesUniversity of Guilan Department of Biology Faculty of SciencesUniversity of Guilan

In this study,N,N＇-di-（2-methylphenyl）malonamide was synthesized and reacted with polyphosphoric acid to afford *** novel azo disperse dyes were then synthesized by linking diazotized p-substituted aniline derivatives with *** solvatochromism of these azo dyes in various solvents was *** the compounds were then evaluated for their antibacterial activity against four bacteria,*** *** luteus, Salmonella enterica,and Pseudomonas *** results showed that some of these compounds have high levels of antibacterial activity.

关键词： Azo dyes disperse dyes Hydroxyl quinolone Absorption spectrum Antibacterial studies

Recipes Prediction by Matching to K/S Values Based on New Two-constant Theory

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Journal of Donghua University(English Edition) 2006年第4期23卷 80-83页

作者：何国兴邢怀忠周明训 College of Basic Sciences Donghua University Shanghai 201620 College of Chemistry and Chemical Engineering Donghua University Shanghai 201620

A concept of new two-constant of colorant, both （ R/St ） and （s/St）, is introduced based on the Kubelka-Munk theory. A new two-constant theory for color matching is presented. Basic equations used in matching to K/S values are given in matrix form based on the new two-constant theory. Algorithm for a least-squares match to K/S values of a sample is developed by use of the new two-constant theory. The algorithm is suitable for single-constant theory as well as two-constant theory. The experimental data show that calculating K/S values of disperse dyes based on new two- constant theory are accordant with the measuring ones. The recipes predicted by new two-constant theory arc closer to the actual recipes of the standard sample than the recipes predicted by single-constant theory. The sample according to the recipe predicted by new two-constant theory has smaller color difference against for the standard than the sample according to the recipe predicted by single-constant theory. The results show that the scattering of disperse dyes cannot be negligible, and that the recipes match to textiles colored by disperse dyes should be predicted by using of new two-constant theory.

关键词： colorant disperse dyes reflectivity absorption scattering recipes.

Synthesis and Application of Sodium Benzoylthioglycollate to Cotton Fabric

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Journal of Donghua University(English Edition) 2004年第5期21卷 33-35页

作者：赵涛 College of Chemistry and Chemical Engineering Donghua University Shanghai 200051

The paper discussed the synthesis and application of sodium benzoylthioglycollate (BTG) to cotton cellulose. The main product was proved to be BTG. Dyeing substantivity of modified cotton fibre by BTG with disperse dye were improved. The effect of modification conditions, such as the property of alkali and its using amount, curing temperature and time were discussed. Colour yield and resistance to wash fastness were also measured.

关键词： modification of cotton fibre sodium benzoylthioglycollate disperse dyes