Extraction of Natural Dyes from Glycyrrhiza glabra and Lagerstroemia speciosa for Wool Dyeing and Testing of its Functional Properties

В статье рассматриваются традиционные способы производства природных красителей, раскрываются особенности технологии правильного крашения с применением натуральных ингредиентов. Антропология цвета в культуре ингушей базировалась на двухуровневой основе: с одной стороны, она была связана с естественно-средовыми условиями окружения, с другой - формировалась под влиянием исторической практики и жизнедеятельности народа. Рассматриваются технологические издержки, которые возникают при производстве натуральных красителей в домашних условиях. Отмечается, что к началу ХХ в. на территории Северного Кавказа происходит постепенный переход от применения натуральных красителей к более дешевым и менее трудоемким фабричным аналогам. Автором представлен систематизированный перечень местных красильных растений и деревьев, дается информация о красильных свойствах минералов и технологии их использования в кустарном производстве ингушей в XIX-XX вв. в процессе крашения шерсти. На основе проведенного анализа делается вывод о том, что в современных условиях происходит утрата традиционного опыта производства натуральных красителей и крашения шерсти у ингушей. The paper discusses traditional methods for the production of natural dyes, the features of the technology of correct dyeing. The anthropology of color in the culture of the Ingush was based on a two-level basis: on the one hand, it was associated with the natural environmental conditions, and on the other hand, it was formed under the influence of historical practice and life. The technological costs that arise in the production of natural dyes at home are considered. The research shows that by the beginning of the twentieth century in the North Caucasus there is a gradual transition from the use of natural dyes to cheaper and less laborious factory analogues. The author presents a systematized list of local dyeing plants and trees, provides information on the dyeing properties of minerals and the technology of their use in the handicraft production of the Ingush in the 19th - 20th centuries in the process of dyeing wool. Based on the analysis, the author concludes that in modern conditions there is a loss of traditional experience in the production of natural dyes and wool dyeing among the Ingush.

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The effect of mordanting method on the absorption behavior of natural dyes

Pigment & Resin Technology ◽

10.1108/prt-05-2021-0050 ◽

2021 ◽

Vol ahead-of-print (ahead-of-print) ◽

Author(s):

Ali Shams Nateri ◽

Ehsan Dehnavi

Keyword(s):

Principal Component ◽

Color Difference ◽

Natural Dye ◽

Natural Dyes ◽

Reflectance Spectra ◽

Pomegranate Peel ◽

Content Type ◽

Derivative Spectroscopy ◽

Wool Dyeing ◽

Color Depth

Purpose This work aims to study the effect of mordanting method as pre-mordanting (on-chrome), meta-mordanting (meta-chrome) and post-mordanting (after-chrome) on wool dyeing with madder natural dye without tannin and pomegranates peel, as a natural dye contains tannin. Design/methodology/approach The woolen yarn was dyed with madder and pomegranate peel natural dyes by three methods as pre-mordant, meta-mordant and pos-mordant. The color parameters and reflectance spectra of dyed samples were analyzed by using derivative spectroscopy and the principal component analysis (PCA) techniques. Findings The obtained results indicate that the color difference between the samples dyed with madder by pre-mordanting, and the samples dyed by other methods is more than the color difference between the samples dyed by meta-mordanting and post-mordanting. However, the color difference between samples dyed with pomegranate peel by pre-mordanting and meta-mordanting methods is less compared to other pairs. Also, analysis of reflectance spectra and color depth (K/S) values indicate that the color depth of dyed sample with madder by pre-mordanting method is more than other dyeing methods. But, the color depth of sample dyed with pomegranate peel by post-mordanting method is less compared to other methods. The analysis of first-, second-, third- and fourth-order derivatives of reflectance spectra and the study of the first, second, third and fourth PCs of reflectance spectra indicate that the reflectance of dyed samples with madder and pomegranates peel depends on the mordanting method. Originality/value Evaluation of the effect of mordanting method on color and reflectance of wool dyed with madder and pomegranates peel natural dyes using derivative spectroscopy and the PCA techniques

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APPLYING BI–FUNCTIONAL DYEING AND UV PROTECTION ON PROTEIN TEXTILE MATERIALS WITH WASTE FROM USED TEABAGS AND MANGOSTEEN HULLS

Vietnam Journal of Science and Technology ◽

10.15625/2525-2518/55/1b/12096 ◽

2018 ◽

Vol 55 (1B) ◽

pp. 91

Author(s):

Bui Mai Huong

Keyword(s):

Uv Protection ◽

Natural Dyes ◽

Optimal Conditions ◽

Citric Acid Solution ◽

Textile Materials ◽

Protein Fibers ◽

Wool Dyeing ◽

Silk Dyeing ◽

Mordant Dyeing ◽

Temperature Time

This paper presents the connection among three factors of the eco–friendly approach and products: natural textile materials, natural dyes and utilization of waste. The silk and wool materials were chosen as they are both protein fibers that have natural dyes affinity. The dyes were extracted from wastes (mangosteen hulls and used tea–bags) with optimal conditions found during our experiments: 80 °C for 120 min with a 15 % w/v citric acid solution in a 1:10 ratio of mangosteen flakes to solvent and 100 °C for 60 min in a 1:20 ratio of spent tea powder to solvent. The silk dyeing and wool dyeing were carried out at separately proper temperature, time and concentrations. The effect on dyeing of mordant types with different salt–metals mordanting methods and mordant techniques – pre–mordanting, simultaneous mordanting and post–mordanting were undertaken. The K/S values were used for determining the fixation of dyes on textile materials as it reflects the surface luster shade of the dyeing products. The results helped to estimate the influence of dyeing processes on protein materials where low temperature (< 90 °C) and post–mordanting methods exhibited good effects. The UPF values above 29 measured on dye fabric proved the excellent UV protection, even with non–mordant dyeing.

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DYEING AND FUNCTIONAL PROPERTIES OF POLYAMIDE-6 FABRIC DYED WITH NATURAL DYES

Al-Azhar Bulletin of Science ◽

10.21608/absb.2011.7017 ◽

2011 ◽

Vol 22 (Issue 2-A) ◽

pp. 53-63

Keyword(s):

Functional Properties ◽

Polyamide 6 ◽

Natural Dyes

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Wool dyeing with binary mixture of natural dyes

Pigment & Resin Technology ◽

10.1108/prt-06-2014-0045 ◽

2016 ◽

Vol 45 (1) ◽

pp. 52-61 ◽

Cited By ~ 3

Author(s):

E. Dehnavi ◽

A. Shams-Nateri ◽

H. Khalili

Keyword(s):

Binary Mixture ◽

Binary Mixtures ◽

Natural Dye ◽

Natural Dyes ◽

Wool Fibre ◽

Content Type ◽

Structures And Properties ◽

Colour Parameters ◽

Wool Dyeing ◽

Practical Implications

Purpose – This paper aims to focus on the absorption behaviour of single and binary mixtures of natural dyes on wool. Natural dyes are multi-components with different structures and properties. Design/methodology/approach – In this research, the absorption behaviour of single and binary mixtures of natural dyes was investigated on wool fibre. Study was conducted via some natural dyes, including pomegranate peel as a yellow natural dye with tannin, weld as a yellow natural dye without tannin and madder as a red natural dye without tannin. Applied mordant was alum, which was used in the pre-mordant method. Different shades were obtained by varying dye concentration in the binary mixture. The effect of tannin on absorption behaviour of binary mixture of natural dyes was investigated by spectral reflectance and colour parameters of dyed samples measurements. Findings – Obtained results indicate that tannin affects the absorption behaviour of natural dyes in binary mixtures. Practical implications – Because natural dyes are multi-components with different structure and properties, the study of compatibility and absorption behaviour of natural dyes in binary mixture on wool is important in applied researches. Originality/value – The study of compatibility and absorption behaviour of binary mixture of natural dyes on wool is novel.

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Quaternary structure of Limulus polyphemus hemocyanin

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100081747 ◽

1978 ◽

Vol 36 (2) ◽

pp. 176-177

Author(s):

T. Wichertjes ◽

E.J. Kwak ◽

E.F.J. Van Bruggen

Keyword(s):

Electron Microscopy ◽

Functional Properties ◽

Horseshoe Crab ◽

Temperature Jump ◽

Quaternary Structure ◽

Crystallographic Analysis ◽

Limulus Polyphemus ◽

Oxygen Binding ◽

X Ray ◽

Intact Molecule

Hemocyanin of the horseshoe crab (Limulus polyphemus) has been studied in nany ways. Recently the structure, dissociation and reassembly was studied using electron microscopy of negatively stained specimens as the method of investigation. Crystallization of the protein proved to be possible and X-ray crystallographic analysis was started. Also fluorescence properties of the hemocyanin after dialysis against Tris-glycine buffer + 0.01 M EDTA pH 8.9 (so called “stripped” hemocyanin) and its fractions II and V were studied, as well as functional properties of the fractions by NMR. Finally the temperature-jump method was used for assaying the oxygen binding of the dissociating molecule and of preparations of isolated subunits. Nevertheless very little is known about the structure of the intact molecule. Schutter et al. suggested that the molecule possibly consists of two halves, combined in a staggered way, the halves themselves consisting of four subunits arranged in a square.

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