Because the red and bright color of corolla is the main indicator for the quality assessment of good safflower,the dyed safflower is sometimes found at the herbal market,what is influence on this herb quality and efficacy. A total of 127 safflower samples was therefore collected from different cultivating areas and herbal markets in China to develop a rapid method to identify the dyed safflower. Near-infrared spectroscopy(NIRS) combined with characteristic identification,high performance liquid chromatography(HPLC),principal component analysis(PCA) and partial least squares regression analysis(PLS) were employed to differentiate safflower from dyed safflower samples,and further quantify the levels of the 6 dyes,i.e. tartrazine,carmine,sunset yellow,azorubine,acid red 73 and orange Ⅱ in the dyed safflower. The results indicated that the 50 safflower samples and 77 dyed safflower samples were located at different regions in PCA cluster diagram by NIR spectra. Tartrazine,carmineand and sunset yellow were found in the 77 dyed safflower samples with the amounts of 0. 60-3. 66,0. 11-1. 37,0. 10-0. 71 mg·g-1,respectively. It indicated that the three dyes were the common and main dyes in the dyed safflower. However,azorubine,acid red 73 and orange Ⅱ were not detected in all herb samples. A total of 62 dyed safflower samples were chosen as calibration samples to develop the model for estimating the amount of dyes in dyed safflower. The estimating accuracy was verified by another 15 dyed safflower samples. The values of tartrazine,carmine and sunset yellow in dyed safflower samples were compared between the NIRS and HPLC methods. Each value of mean absolute difference(MAD) was less than 5%. The correlation coefficients of tartrazine,carmineand and sunset yellow were 0. 970,0. 975,0. 971,respectively. It indicated the data quantified by NIRS and HPLC were consistence. It is concluded that NIRS can not only differentiate safflower from dyed safflower,but also quantify the amount of the dyes. NIRS is suitable for rapidly identify the quality of safflower.
Azo Compounds ; Benzenesulfonates ; Carmine ; Carthamus tinctorius ; chemistry ; China ; Coloring Agents ; analysis ; Naphthalenesulfonates ; Spectroscopy, Near-Infrared ; Tartrazine

Aims: The present study investigated the biodegradation and removal of dye mixture (Remazol Brilliant Violet 5R and Reactive Red 120) using a new bacterial consortium isolated from dye-contaminated soil. Methodology and results: Among the total 15 isolates screened, the two most efficient bacterial species (SS07 and SS09) were selected and identified as Enterobacter cloacae (MT573884) and Achromobacter pulmonis (MT573885). The removal efficiency of dye mixture by E. cloacae and A. pulmonis at an initial concentration of 100 mg/L was 82.78 and 84.96%, discretely. The bacterial consortium was developed using selected isolates and the optimum conditions for removing dyes were investigated. The maximum decolorization efficiency was achieved at pH 7; 35 °C; dye concentration, 100 mg/L; and initial inoculum concentration, 0.5 mL with mannitol and ammonium sulfate as carbon and nitrogen sources. The maximum removal efficiency of 91.3 ± 3.35% was achieved at the optimal conditions after 72 h of incubation. Conclusion, significance and impact of study Decolorization of azo dyestuff by the developed microbial consortia conforms to the zero-order reaction kinetics model. Consortia of E. cloacae and A. pulmonis was established as an effective decolorizer for the Remazol Brilliant violet 5R and Reactive Red 120 dye mixture with >90% color removal.
Azo Compounds ; Microbial Consortia

Azo dyes are widely used in textile, paper and packing industries, and have become one of the research hot spots in dye wastewater treatment because of their carcinogenicity, teratogenic mutagenicity, stable structure and degradation difficulty. In this study, the biodecolorization of acid orange 7 (AO7), an azo dye, by different white rot fungi was investigated, and the effect of different conditions on the decolorization rate of the dye was analyzed. At the same time, the degradation liquor was analyzed and the phytotoxicity experiment was performed to deduce the possible degradation pathway of AO7 and assess the toxicity of its degradation products. The results showed that the decolorization rate reached 93.46% in 24 h at pH 4.5, 28 ℃ by Pleurotus eryngii and Trametes versicolor when AO7 concentration was 100 mg/L. The biodegradation pathway of AO7 was initiated by the cleavage of the azo bond of AO7, generating p-aminobenzenesulfonic acid and 1-amino-2-naphthol. Subsequently, the sulfonic acid group of p-aminobenzene sulfonic acid was removed to generate hydroquinone. Moreover, the 1-amino-2-naphthol was de-ringed to generate phthalic acid and p-hydroxybenzaldehyde, and then further degraded into benzoic acid. Finally, hydroquinone and benzoic acid may be further oxidized into other small molecules, carbon dioxide and water. Phytotoxicity experiment showed that the toxicity of AO7 could be reduced by P. eryngii and T. versicolor.
Hydroquinones ; Trametes ; Azo Compounds ; Benzoic Acid

Many different additives include preservatives, stabilizers, conditioners, thickeners, colorings, flavorings, sweeteners, and antioxidants. Despite the multitude of additives known, only a small number has been associated with hypersensitivity reactions. A number of investigators have suggested that a significant population of patients with allergic diseases has symptoms related to the ingestion of food additives. However, the incidence and mechanism of reactions to additives in patients with chronic urticaria, angioedema, and atopic dermatitis remain unknown. A few studies of monosodium glutamate is reported to be associated with atopic dermatitis, but their relationship remains unknown. The best known dye is tartrazine. The group of azo dyes includes ponceau and sunset yellow. Amaranth (FD&C red no. 5) was banned from use in the US in 1975 because of claims related to carcinogenicity. Most of them are reported to be associated with aggravation of atopic dermatitis. Parabens are aliphatic esters of parahydroxybenzoic acid. Sodium benzoate is a closely related substance usually reported to cross-react with these compounds. These agents, which are widely used as preservatives in both food and drugs, are well recognized as causes of severe contact dermatitis. Additives would have to act as haptens to create a response mediated by IgE. The majority of these reactions are not of the immediate hypersensitivity type. Many cases of additive-provoked urticaria or dermatitis occur as late as 24 hours after challenge, arguing against an IgE-mediated mechanism. In conclusion, the exact relationship between food additives and the allergic diseases still remains to be solved.
Angioedema ; Antioxidants ; Azo Compounds ; Coloring Agents ; Dermatitis ; Dermatitis, Atopic ; Dermatitis, Contact ; Eating ; Esters ; Food Additives ; Food Hypersensitivity ; Haptens ; Humans ; Hypersensitivity ; Hypersensitivity, Immediate ; Immunoglobulin E ; Incidence ; Parabens ; Research Personnel ; Sodium Benzoate ; Sodium Glutamate ; Sweetening Agents ; Tartrazine ; Urticaria

The structure of coxsackievirus and adenovirus receptor's CAR is similar to adhesion molecules. In the adult heart, the majority of CAR localizes at the intercalated disc. Germ line CAR deletion induces embryonic lethality at E11.5 with evidence of a cardiac abnormality. The CAR role as a viral receptor is well known; however, its precise function in the heart for enterovirus infection is not clear. To understand the role of CAR in the cardiac myocyte, we generated cardiac-specific CAR knockout mice using a CAR floxed allele and alpha-MHC-Mer CRE Mer mice. Western blot analysis and immunofluorescent stain of ventricles at 6 weeks after 2 weeks tamoxifen administration, CAR expression was significantly decreased in CAR(f/f) MCM mice but not in CAR(f/f) mice heart. Enterovirus was intraperitoneally infected into CAR(f/f) MCM and CAR(f/f) mice (n=10 each). CAR disruption was dramatically reduced virus infection and replication in the heart but not different in liver, spleen, and pancreas. Cardiac myocyte damage was significantly reduced in the CAR(f/f) MCM mutant mice by evans blue dye stain. In addition, the CAR(f/f) MCM mutant mice heart inflammation and fibrosis were decreased in H&E and trichrome stain compare to CAR(f/f) control mice. CAR expression was required for normal ventricular function, but it is the cause of enterovirus infection. In the adult mice heart, CAR deletion was significantly reduced viral infection, proliferation, and myocarditis. These results suggested that CAR deletion could be useful therapeutic strategy to prevent viral myocarditis.
Adenoviridae ; Adult ; Alleles ; Animals ; Azo Compounds ; Blotting, Western ; Enterovirus ; Enterovirus Infections ; Eosine Yellowish-(YS) ; Evans Blue ; Fibrosis ; Germ Cells ; Heart ; Humans ; Inflammation ; Liver ; Methyl Green ; Mice ; Mice, Knockout ; Myocarditis ; Myocytes, Cardiac ; Pancreas ; Receptors, Virus ; Spleen ; Tamoxifen ; Ventricular Function ; Viruses

Amides can be obtained in good to excellent yield by Sm/TiCl(4) mediated reductive cleavage of N=N bond in azo compounds and successive acylation in one pot. It offers an alternative method for the synthesis of amides from very simple starting materials directly.
Azo Compounds ; chemistry ; Chlorine Compounds ; chemistry ; Combinatorial Chemistry Techniques ; methods ; Halogens ; chemistry ; Samarium ; chemistry ; Titanium ; chemistry

Thirteen compounds from Dendrolobium triangulare (Retz.) Schindl. were isolated and purified by chromatography on silica gel, macroporous resin column and recrystallization method, and their structures were elucidated by chemical and spectral analyses as azo-2, 2'-bis [Z-(2, 3-dihydroxy-4-methyl-5-methoxy) phenyl ethylene] (1), beta-sitosterol (2), N-(2'-hydroxy-tetracosanoyl)-2-amino-1, 3, 4-trihydroxyoctadec-8E-ene (3), lupeol (4), cycloeucalenol (5), daucosterol (6), betulinc acid (7), betulin (8), glyceryl hexacosanoate (9), glyceryl 26-hydroxy hexacosanoate (10), methyl pheophorbide-a (11), acacetin-7-O-alpha-L-rhamnopyranosyl (1-6)-beta-D-glucopyranoside (12) and robinin (13). To our knowledge, all compounds are obtained from Dendrolobium genus for the first time and compound 1 is a novel compound. Moreover, it is understood that compound 1 has better protection against PC12 cell damnification deduced by glutamate, than that of Vitamin E in 2 microg x mL(-1) concentration.
Animals ; Azo Compounds ; isolation & purification ; pharmacology ; Fabaceae ; chemistry ; PC12 Cells ; Rats

Azo dyes containing effluents from different industries pose threats to the environment. Though there are physico-chemical methods to treat such effluents, bioremediation is considered to be the best eco-compatible technique. In this communication, we discuss the decolorization potentiality of five azo dyes by Podoscypha elegans (G. Mey.) Pat., a macro-fungus, found growing on the leaf-litter layer of Bethuadahari Wildlife Sanctuary in West Bengal, India. The fungus exhibited high laccase and very low manganese peroxidase activities under different culture conditions. Decolorization of five high-molecular weight azo dyes, viz., Orange G, Congo Red, Direct Blue 15, Rose Bengal and Direct Yellow 27 by the fungus was found to be positive in all cases. Maximum and minimum mean decolorization percentages were recorded in Rose Bengal (70.41%) and Direct Blue 15 (24.8%), respectively. This is the first record of lignolytic study and dye decolorization by P. elegans.
Azo Compounds ; Biodegradation, Environmental ; Citrus sinensis ; Congo Red ; Fungi ; India ; Laccase* ; Manganese ; Peroxidase ; Rose Bengal

Eruptive collagenoma is an acquired connective tissue nevus without family history. It is typically described as numerous small papules or nodules on the trunk and arms with histopathological features of decreased or degenerated elastic fibers. We report a case of a 16-year-old male who presented with multiple asymptomatic 2 to 5 mm sized yellowish grouped papules on the left calf. Histopathologically, the lesion showed thickened homogenized collagen fibers highlighted by Masson trichrome stain and decreased and fragmented elastic fibers stained by Verhoeff-van Gieson stain. The skin lesion was diagnosed as eruptive collagenoma and no treatment was provided.
Adolescent ; Arm ; Azo Compounds ; Collagen ; Connective Tissue ; Elastic Tissue ; Eosine Yellowish-(YS) ; Humans ; Male ; Methyl Green ; Nevus ; Skin

An 18-year-old man presented as marked proteinuria on urinalysis. Abdominal ultrasonography and computed tomography indicated the presense of horseshoe kidney without any other abnormalities. A percutaneous computed tomography (CT) guided renal biopsy was done. Of 6 glomeruli obtained, global sclerosis was found in 2. Some segments of affected glomerulus showed peripheral solidifications and focal hyalinosis, which are Periodic acid-Schiff and Masson Trichrome stain positive. The diagnosis of horseshoe kidney with focal segmental glomerulosclerosis (FSGS) was made by clinical and pathological findings. The authors report here a case of FSGS occurring in horseshoe kidney which has not yet been reported in Korea.
Adolescent ; Azo Compounds ; Biopsy ; Eosine Yellowish-(YS) ; Glomerulonephritis ; Glomerulosclerosis, Focal Segmental ; Humans ; Kidney ; Korea ; Methyl Green ; Proteinuria ; Sclerosis ; Urinalysis