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Journal articles on the topic 'Synthèse de colorants'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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1

Viel, Claude. "Colorants naturels et teintures du XVIIe siècle à la naissance des colorants de synthèse." Revue d'histoire de la pharmacie 93, no. 347 (2005): 327–48. http://dx.doi.org/10.3406/pharm.2005.5848.

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2

Mansour, Hedi Ben, Oualid Boughzala, dorra Dridi, Daniel Barillier, Leila Chekir-Ghedira, and Ridha Mosrati. "Les colorants textiles sources de contamination de l’eau : CRIBLAGE de la toxicité et des méthodes de traitement." Revue des sciences de l’eau 24, no. 3 (2011): 209–38. http://dx.doi.org/10.7202/1006453ar.

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Les colorants sont largement utilisés dans les imprimeries, les produits alimentaires, cosmétiques et cliniques, mais en particulier dans les industries textiles pour leur stabilité chimique et la facilité de leur synthèse et leur variété de couleurs. Cependant, ces colorants sont à l’origine de la pollution une fois évacués dans l’environnement. La production mondiale des colorants est estimée à plus de 800 000 t•an-1et les colorants azoïques sont majoritaires et représentent 60-70 %. Compte tenu de la composition très hétérogène de ces derniers, leur dégradation conduit souvent à la concepti

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3

Kacha, S., M. S. Ouali, and S. Elmaleh. "Élimination des colorants des eaux résiduaires de l'industrie textile par la bentonite et des sels d'aluminium." Revue des sciences de l'eau 10, no. 2 (2005): 233–48. http://dx.doi.org/10.7202/705279ar.

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L'industrie textile utilise des colorants de synthèse toxiques qui polluent ses eaux résiduaires avec, parfois, des flux importants. Les procédés traditionnels les éliminent mal : ils sont peu iodégradables et la seule floculation, par exemple par des sels de fer, donne des résultats insuffisants. Or, en Algérie, la réutilisation agricole des eaux usées même industrielles est devenue une impérieuse nécessité. Le procédé proposé repose sur l'utilisation de sels d'aluminium ou, mieux encore, un polyhydroxyaluminium, associés à une bentonite de forage très fine présentant l'avantage d'être locale

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4

Fournier, Josette. "Chevreul et le retard français dans le développement des colorants de synthèse." Revue d'histoire de la pharmacie 93, no. 347 (2005): 349–70. http://dx.doi.org/10.3406/pharm.2005.5849.

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5

Giger, Alfred. "Chemical synthesis project. A new yellow carotenoid." Pure and Applied Chemistry 74, no. 8 (2002): 1383–90. http://dx.doi.org/10.1351/pac200274081383.

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Naturally occurring colorants have been used in food processing for centuries to give meals an appealing color. In the first half of the 20th century, the newly discovered brilliant azo dyes, amongst other artificial colorants (indol, triphenylmethane, and methine dyes), were used as pigments for food coloration. The toxicity and/or allergenic potential of some of these colorants were discovered much later. One of these pigments with a critical safety profile is the azo dye tartrazine, which exhibits a nicely fresh greenish-yellow color. The use of tartrazine is now banned in several countries

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6

Liu, Robert S. H. "Photoisomerization by Hula-twist. Photoactive biopigments." Pure and Applied Chemistry 74, no. 8 (2002): 1391–96. http://dx.doi.org/10.1351/pac200274081391.

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A review of literature on photoisomerization of bilirubin and photoactive yellow protein suggests possible involvement of the volume-conserving Hula-twist (HT) reaction mechanism in their primary photochemical processes. Additional definitive experiments to verify their involvement are proposed. Information related to photoproducts of bacteriorhodopsin, rhodopsin, and phytochrome are reviewed. For carotenoids, because of participation of the longer lived triplet state in, for example, the photosynthetic apparatus, the involvement of HT is probably less likely. With the aim of extending the col

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7

Kühlborn, Jonas, Ann-Kathrin Danner, Holger Frey, Rishab Iyer, Anthony J. Arduengo, and Till Opatz. "Examples of xylochemistry: colorants and polymers." Green Chemistry 19, no. 16 (2017): 3780–86. http://dx.doi.org/10.1039/c7gc01244f.

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8

Agbodan, Kokou Agbékonyi, Oudjaniyobi Simalou, Gneiny Whad Tchani, and Koffi Jondo. "Etude de l’influence de la basicité sur l’enthalpie de réaction des sels N-méthoxycarbonyl-(oxy)-pyridiniums." International Journal of Biological and Chemical Sciences 14, no. 4 (2020): 1489–98. http://dx.doi.org/10.4314/ijbcs.v14i4.26.

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Les hétérocycles sont importants, aussi bien dans les domaines biologique, médicinal et thérapeutique (vitamines, hormones, antibiotiques, etc), que dans le secteur industriel et technologique (inhibiteurs de corrosion, colorants, agents stabilisants, pesticides, herbicides. Les chloroformiates ou chlorocarbonates sont les esters dérivés de l’acide chloroformique. La chimie des N-oxydes hétérocycliques (pyridine et N-oxydes) a connu un important développement au cours des dernières années. L’objectif principal du présent travail est l’étude de l’action du métoxycarbonylchloride sur la pyridine

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9

Sayah, Naima, Abdellah Bakhti, and Nathalie Fagel. "Étude de l’adsorption du rouge de chlorophénol sur une hydrotalcite calcinée." Revue des sciences de l’eau 30, no. 2 (2018): 103–12. http://dx.doi.org/10.7202/1042921ar.

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L’élimination de la couleur de solutions aqueuses du rouge de chlorophénol a été étudiée par adsorption sur une hydrotalcite de synthèse calcinée. Le solide [Mg-Al-CO3] a été préparé par coprécipitation à pH constant et selon un rapport molaire Mg/Al = 2. Les études par diffraction des rayons X et spectroscopie infrarouge à transformée de Fourier (FTIR) ont montré que le matériau obtenu correspond aux composés de type hydrotalcite avec une bonne cristallinité. L’interaction de ce matériau avec le colorant montre que la cinétique d’adsorption est rapide et suit une expression de vitesse d’adsor

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10

Choe, Deokyeong, Soo Min Song, Chul Soo Shin, et al. "Production and Characterization of Anti-Inflammatory Monascus Pigment Derivatives." Foods 9, no. 7 (2020): 858. http://dx.doi.org/10.3390/foods9070858.

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The prevention and treatment of chronic inflammation using food-derived compounds are desirable from the perspectives of marketing and safety. Monascus pigments, widely used as food additives, can be used as a chronic inflammation treatment. Orange Monascus pigments were produced by submerged fermentation in a 5 L bioreactor, and multiple orange Monascus pigment derivatives with anti-inflammatory activities were synthesized using aminophilic reaction. A total of 41 types of pigment derivatives were produced by incorporating amines and amino acids into the orange pigments. One derivative candid

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11

Lim, Chin Giaw, Lynn Wong, Namita Bhan, et al. "Development of a Recombinant Escherichia coli Strain for Overproduction of the Plant Pigment Anthocyanin." Applied and Environmental Microbiology 81, no. 18 (2015): 6276–84. http://dx.doi.org/10.1128/aem.01448-15.

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ABSTRACTAnthocyanins are water-soluble colored pigments found in terrestrial plants and are responsible for the red, blue, and purple coloration of many flowers and fruits. In addition to the plethora of health benefits associated with anthocyanins (cardioprotective, anti-inflammatory, antioxidant, and antiaging properties), these compounds have attracted widespread attention due to their promising potential as natural food colorants. Previously, we reported the biotransformation of anthocyanin, specifically cyanidin 3-O-glucoside (C3G), from the substrate (+)-catechin inEscherichia coli. In t

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12

Andraos, John. "A database tool for process chemists and chemical engineers to gauge the material and synthetic efficiencies of synthesis plans to industrially important targets." Pure and Applied Chemistry 83, no. 7 (2011): 1361–78. http://dx.doi.org/10.1351/pac-con-10-10-07.

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After 20 years of green chemistry research, a complete algorithm for the determination of material and synthetic strategy efficiencies for synthesis plans to any chemical target has been achieved. This paper presents the first announcement of a comprehensive database consisting of green metrics calculations for 1060 plans to 220 targets of interest to the chemical industry in the following categories: commodity industrial chemicals, pharmaceuticals, agrichemicals, dyestuffs and colorants, natural products, flavorings, fragrances, and sweeteners, and molecules of theoretical interest. Data mini

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13

Chayaratanasin, Poramin, Allen Caobi, Chaturong Suparpprom, et al. "Clitoria ternatea Flower Petal Extract Inhibits Adipogenesis and Lipid Accumulation in 3T3-L1 Preadipocytes by Downregulating Adipogenic Gene Expression." Molecules 24, no. 10 (2019): 1894. http://dx.doi.org/10.3390/molecules24101894.

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Clitoria ternatea (commonly known as blue pea) flower petal extract (CTE) is used as a natural colorant in a variety of foods and beverages. The objective of study was to determine the inhibitory effect of CTE on adipogenesis in 3T3-L1 preadipocytes. The phytochemical profiles of CTE were analyzed by liquid chromatography and tandem mass spectrometry (LC-MS/MS). Anti-adipogenesis effect of CTE was measured by using Oil Red O staining, intracellular triglyceride assay, quantitative real-time PCR and western blot analysis in 3T3-L1 adipocytes. Cell cycle studies were performed by flow cytometry.

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14

Kawabata, Kunihiro, Nguyen Huu Tung, Yukihiro Shoyama, Shigeyuki Sugie, Takayuki Mori, and Takuji Tanaka. "Dietary Crocin Inhibits Colitis and Colitis-Associated Colorectal Carcinogenesis in Male ICR Mice." Evidence-Based Complementary and Alternative Medicine 2012 (2012): 1–13. http://dx.doi.org/10.1155/2012/820415.

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A natural carotenoid crocin is contained in saffron and gardenia flowers (crocuses and gardenias) and is used as a food colorant. This study reports the potential inhibitory effects of crocin against inflammation-associated mouse colon carcinogenesis and chemically induced colitis in male ICR mice. In the first experiment, dietary crocin significantly inhibited the development of colonic adenocarcinomas induced by azoxymethane (AOM) and dextran sodium sulfate (DSS) in mice by week 18. Crocin feeding also suppressed the proliferation and immunohistochemical expression of nuclear factor- (NF-)κB

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15

Conte, Lisiane, Sabrina Somacal, Sabrina Marafiga Nichelle, et al. "Short-Term Bixin Supplementation of Healthy Subjects Decreases the Susceptibility of LDL to Cu2+-Induced Oxidation Ex Vivo." Journal of Nutrition and Metabolism 2019 (March 3, 2019): 1–13. http://dx.doi.org/10.1155/2019/9407069.

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Lycopene-based medications and supplements have been developed to prevent atherosclerosis, primarily because of their ability to decrease low-density lipoprotein (LDL) oxidation. Bixin and norbixin are carotenoids found in the seeds of annatto (Bixa orellana) and are colorants widely used by the food industry. Some studies have already demonstrated that these compounds have antioxidant and antiatherogenic potential in vitro and in animal models, but there is no evidence supporting the effects of their long-term or short-term consumption by humans. The aim of this study was to evaluate the effe

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16

Wen, Yi-Ling, Ziyu He, De-Xing Hou та Si Qin. "Crocetin Exerts Its Anti-inflammatory Property in LPS-Induced RAW264.7 Cells Potentially via Modulation on the Crosstalk between MEK1/JNK/NF-κB/iNOS Pathway and Nrf2/HO-1 Pathway". Oxidative Medicine and Cellular Longevity 2021 (10 вересня 2021): 1–18. http://dx.doi.org/10.1155/2021/6631929.

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Crocetin is a main bioactive component with a carotenoid skeleton in Gardenia jasminoides, a typical traditional Chinese medicine with a long history in Southeast Asia. Crocetin is being commonly consumed as spices, dyes, and food colorants. Recent pharmacological studies had implied that crocetin may possess potent anti-inflammatory properties; however, the underlying molecular mechanism is not fully elucidated. In the present study, the regulatory effect of crocetin on redox balance was systematically investigated in lipopolysaccharide- (LPS-) stimulated RAW264.7 cells. The results showed th

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17

Ristiarini, Susana, Muhammad Nur Cahyanto, Jaka Widada, and Endang Sutriswati Rahayu. "Pengaruh Penambahan Laurat dan Glisin terhadap Nilai Warna dan Kadar Sitrinin Angkak." agriTECH 38, no. 3 (2019): 320. http://dx.doi.org/10.22146/agritech.27042.

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Angkak, commonly used for food colorant and flavor enhancers in oriental cuisine, is the result of fermentation by Monascus purpureus on steamed rice. In addition to producing pigments Monascus purpureus, Angkak also produces mycotoxins, citrinin, which is hepato-nephrotoxic. Biosynthesis of pigment and citrinin is following a polyketide synthase pathway and then subdivides to form pigment or citrinin. Fatty acids and amino acids are known to be the precursors of red pigment formers in their biosynthetic pathways. The purpose of this research was to know the effect of addition of lauric fatty

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18

Waki, Toshiyuki, Miho Terashita, Naoki Fujita, et al. "Identification of the Genes Coding for Carthamin Synthase, Peroxidase Homologs that Catalyze the Final Enzymatic Step of Red Pigmentation in Safflower (Carthamus tinctorius L.)." Plant and Cell Physiology, August 3, 2021. http://dx.doi.org/10.1093/pcp/pcab122.

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Abstract Carthamin, a dimeric quinochalcone that is sparingly soluble in water, is obtained from the yellow-orange corolla of fully blooming safflower (Carthamus tinctorius L.) florets. Carthamin is a natural red colorant, which has been used worldwide for more than 4500 years and is the major component of Japanese “beni” used for dyeing textiles, cosmetics, and as a food colorant. The biosynthetic pathway of carthamin has long remained uncertain. Previously, carthamin was proposed to be derived from precarthamin (PC), a water-soluble quinochalcone, via a single enzymatic process. In this stud

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19

Christie, Robert. "Azo (Hydrazone) pigments: general principles." Physical Sciences Reviews, April 22, 2021. http://dx.doi.org/10.1515/psr-2020-0148.

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Abstract This paper presents an overview of the general chemical principles underlying the structures, synthesis and technical performance of azo pigments, the dominant chemical class of industrial organic pigments in the yellow, orange, and red shade areas, both numerically and in terms of tonnage manufactured. A description of the most significant historical features in this group of pigments is provided, starting from the discovery of the chemistry on which azo colorants are based by Griess in the mid-nineteenth century, through the commercial introduction of the most important classical az

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