Simultaneous Mordanting Research Articles

Development of a Sustainable Dyeing Process for Cotton fabric Utilizing Natural Dyes from Punica granatum L. and Curcuma Longa

Pomegranate fruit grains and turmeric have naturally dyeing properties, making them nontoxic, non-allergic, and biodegradable alternatives to synthetic dyes for coloring various textiles, including cotton. This study used pomegranate and turmeric extracts to dye bleached cotton fabric using various mordants, including pre-, post-, and simultaneous mordanting techniques. The natural dyes in these extracts contains alkaloids, tannins, anthocyanins, glycosides, and curcumin, impart different colours to the fabrics. The light sensitivity of these dyes and also role of pH of the dyeing were also explored. The wide ranges of colors were obtained by varying the concentration, ratio, and pH of the extracts, as well as the choice of mordant used. Pomegranate and turmeric extracts demonstrates the potential results as sustainable dyeing and environmentally friendly dyes for cotton fabric.

Insight into Low-Temperature One-Step Biopreparation and Natural Dyeing of Cotton as an Environmentally Benign Route

The goal of this study is to present an environmentally benign route for cotton fabric and investigate the effect of different pretreatments in natural dyeing. In this context, conventional alkaline scouring, conventional hydrogen peroxide bleaching, low-temperature one-step biopreparation processes, namely enzymatic scouring (alkaline pectinase and alkaline pectinase-neutral cellulase combination) at 55 °C and enzyme-bleaching agent (hydrogen peroxide/sodium percarbonate/sodium perborate)-activator agent (TAED) combinations at 65 °C were applied to 100% cotton knitted fabric. The use of agricultural waste and eco-friendly mordants was preferred in natural dyeing. For this purpose, pretreated fabrics were dyed with the outer green shell of almond fruit extracts and a low amount of 0.4 g/L metal mordants (alum and iron(II) sulfate) in accordance with the simultaneous mordanting method. The dyeing properties of bio- and conventionally prepared cotton fabrics were examined in terms of colorimetric data (K/S, CIELa*b*C*h°) and wash fastness compared with water absorbency, whiteness, weight loss, pectin removal, and type of mordant. Excellent wash fastness values were achieved regardless of the type of pretreatment. Low-temperature one-step biopreparation can be a good substitute for conventional scouring and bleaching processes. Since different results can be achieved, it is essential to determine and evaluate all bioprocess conditions depending on the end-use characteristics of the textile (e.g. whether it will be white or dyed/printed, its color and lightness/darkness) at the laboratory and industrial scale applications.

Evaluation of the effect of Beetroot Dye on Banana Pseudo Stem and Pineapple Leaves Fibres

Extraction and characterization of dye from beetroot scientifically known as Beta vulgaris was achieved. The dye was extracted using two extraction method namely Soxhlet with methanol as solvent and water where the beetroot powder was soaked in water and heat at 30-400C for 2 hours. It was observed that due to instability of beetroot dye at high temperature, aqueous dye extraction is preferable over Soxhlet extraction as the one extracted with Soxhlet changed its color from purple to black brown. Moreso, the extracted dye was characterized. Qualitative photochemical analysis, Anti-bacterial activities, Fourier Transformer Infrared, Ultra Violet Spectroscopy are the analysis conducted. The photochemical analysis revealed the presence of Saponin, Flavonoids, Phenols, Betacyanin with the absence of Tanin and Glycosides. The anti-microbial activities of the dye was conducted using to microorganism namely, Escherichia coli and Staphylococcus aureus with Muller-Hinton Agar. The dye showed antimicrobial activities on Escherichia coli while it could not show any antimicrobial activities on Staphylococcus aureus microorganism. Also, UV-visible spectrum of the dye was conducted and the results showed the presence of betacyanins which are major compounds found in beetroot dye the major one being betanin. The presence of betanin in the dye was also confirmed by the FTIR as well as gas chromatography. Betanin is a major compound found in beetroot which is soluble in water due to the presence of polar groups such as COOH, OH, and NH2, thus the beetroot extract is a dye and not a pigment. Furthermore, dyeing of the extracted dye to treated banana pseudo stem and pineapple leaves fibres shows that it is feasible and the color fastness test conducted shows that both aluminum ammonium sulphate and aluminum acetate mordants can be used separately in simultaneous mordanting methods. Keywords: Beetroot, Extraction, Characterization, Dye, Banana pseudo-stem and pineapple leaves fibres and color fastness.

Natural dyeing of plasma treated wool with avocado seed extract and use of tartaric acid as bio‐mordant

AbstractIn this study, surface modification of wool fabrics by oxygen plasma was carried out to enhance colour, dyeability and fastness properties. Avocado (Persea americana) seed was selected as the natural dye source, plasma activated wool samples were dyed with the extracted colourant and tartaric acid (10% and 20% owf) was used for simultaneous mordanting. All samples exhibited very good washing and dry rubbing fastness grades. It was observed that plasma treated samples have darker and more saturated colours with a persistent hue and increased wet rubbing fastness grades. Applying plasma treatment and using tartaric acid as bio‐mordant provided a noticeable increase in chroma and colour strength, and a slight improvement in fastness to light. Effect of pH of the dye bath on dyeability and the bio‐mordant role of tartaric acid were also investigated for four mordant concentrations (2%, 5%, 10% and 20% owf), and it was detected that using 5% owf or higher concentrations of tartaric acid provided different colour characteristics and dyeability when compared to the dye solutions prepared with inorganic acid. Based on findings of the study, it was concluded that modifying the fabric surface by oxygen plasma can be used to enhance the dyeing performance without causing a major change in the characteristic hue of the colourant extracted from avocado seeds. The use of tartaric acid ‐ solitary or accompanied with plasma treatment ‐ to increase the affinity between the colouring matter and the fibre was also recommended.

Comparative Study of the Effect of Mordants on Dyeing Cotton Fabric with Anacardium Occidentale’s (Cashew) Root Grown in Ankpa, Kogi, Nigeria

Pollution associated with synthetic dyes have caused several health hazards both to human and the environment. In order to curb this trend, especially from industrial effluents, a non – toxic, biodegradable and environmentally compatible dye from nature have to be sourced. In view of these, the root of anacardium occidentale was extracted of its dye and applied on fabrics alone and in the presence of mordants and also applied as colorant on food, cosmetics and alcoholic drinks. The root of anacardium occidantale collected was dried at room temperature and pulverized. 200g was weighed and extracted in 300mL absolute ethanol. Alum, K2Cr2O7 and FeSO4 were the fixatives used. Pre – mordanting, Post – mordanting and Simultaneous mordanting methods were adopted. Varied color hue was imparted on the fabrics and their fastness properties were tested. Alum mordant showed superiority to fastness in simultaneous mordanting in wash with mild soap and fastness to light. Pre – mordanted method showed K2Cr2O7 mordant to retain color in both wash in mild soap and fastness to light. FeSO4 mordant retained its color in simultaneous mordanting method across the fastness test displaying superiority over the rest mordant. An excellent color was imparted on food, cosmetic and alcoholic drink. They colors imparted on the substrates are distinct and promising and shows that the root of anacardium occidandale could be of significance in textile, printing and coloration industries.

Investigation of herbal dyes from Symplocos racemosa (Lodh) leaves and optimization of procedure for dyeing using synthetic mordants

The present study deals with the soaked and woven wool fabrics that were dyed with natural dyes extracted from the leaves of Symplocos racemosa (Lodh). The optimization was carried out with different conditions like concentration of dye material, time for extraction of dye, dyeing time and concentration of mordants. Out of the three methods of mordanting, the best shades for lodh leaf dye were obtained using post-mordanting with ferrous sulphate and stannous chloride and simultaneous mordanting with copper sulphate and potassium dichromate. Poor results were observed in the case of pre-mordanting. The colour fastness analysis indicated the light-coloured samples were affected more rapidly as compared to the dark ones. In this study, the lodh leaf dyed samples exhibited fairly good to excellent fastness to light in the case of ferrous sulphate and stannous chloride while good to good in both copper sulphate and potassium dichromate respectively and the results of washing fastness analysis revealed that lodh leaf dyed samples had good to excellent fastness to washing.

Dyeing of some Egyptian cotton varieties using agricultural wastes (peanut outer skin)

Purpose Peanut skins are an agro-waste product with no commercial value. The purpose of this paper is to evaluate peanut skin as a natural dyestuff and to determine if this natural dye could be used in the dyeing of some Egyptian cotton cultivars. Design/methodology/approach The methodology consists of several steps; dye extraction procedure from peanut skin through aqueous extraction, then dyeing optimized using simultaneous mordanting using alum. Finally, dyed cotton has been subjected to different textile laboratory tests, for example, color measurements and mechanical properties. Color-fastness was determined on Egyptian cotton fabric. The peanut skin as a source of natural dye and the dyed cotton sample were characterized by fourier transform infrared spectroscopy (FTIR) analysis. Findings It was found that the natural dye extracted from peanut skin has an affinity for cotton samples and showed high dyeability with a unique color shade, good color strength and very good fastness. Originality/value The novelty of this paper is the extraction of color from the peanut's outer skin which is discarded as waste such as agro-waste of the agricultural process which can be used as a natural dye in the textile industry and applied to dyeing some Egyptian cotton fibers from different genotypes.

DYEING OF COTTON WITH NATURAL COLORANTS EXTRACTED FROM RED ROSE FLOWER

Cotton substrate was dyed with an extract of red rose petals. The dyeing was carried out with and without metallic mordants (alum, copper sulphate, nickel sulphate, ferric chloride and ferrous sulphate), using two different dyeing systems: pre-mordanting system, simultaneous mordanting system. The colour of the cotton substrate was measured by Data color in terms of K/S, and CIELAB values. In both mordanting system ferrous sulphate produced dark shade, the K/S value for simultaneous system is 16.76 and for pre-mordant K/S values is 12.05. It is also observed the higher %fix is of simultaneous system for ferrous sulphate is 76.80% and for pre-moderating the % fix is 71.50%. But statistical analysis of both techniques tells us the reproducibility of copper sulphate is better to other metallic salts the S.D of K/S values for copper sulphate in simultaneous method is 0.2112 and for pre-mordant method the S.D is 0.1132.

Sustainable technique of dyeing bio-degradable polyester using henna extract

Purpose The purpose of this study is to highlight the threats related to the utilization of synthetic fibers. Volatile organic compounds, particulates and acid gases are released during the production of polyester and other synthetic textiles. Polyester is problematic solid waste material as it takes centuries to break down and hence causes microplastic pollution. Biodegradable synthetic solutions for the replacement of polyester are a sustainable business marketing these days. The naNia fiber is the breakthrough product and it is claimed a biodegradable, compostable and toxin-free polymer. Design/methodology/approach In this research, fabric constructed of naNia fiber was dyed with the extract of naturally occurring Lawsonia inermis (henna) plant leaves. The henna dye was extracted in water and ethanol using different methods, and the better extract was selected by the evaluation of ultraviolet-visible spectroscopy and phytochemical analysis. Henna with ethanol extract showed more desirable results hence it was selected to dye naNia fabric. To improve dyeability, premordanting, simultaneous mordanting and postmordanting were done using chitosan, fresh lemon extract and tannic acid, respectively. The dyed fabric samples were subjected to color strength analysis and multiple colorfastness tests. Findings The colorfastness test has shown good to excellent results. Scanning electron microscope analysis had also shown the attachment of dye molecules to the filaments. This study revealed that henna dye is appropriate to color naNia fiber even without the aid of a mordant. Originality/value For the first time, toxicant-free, biodegradable polyester (naNia) is successfully dyed with sustainable and naturally available dyes and mordants.

Dyeability of Surface-Modified Cotton and Silk Fabrics with PAMAM Dendrimer Using Sargassum sp. Seaweed Extract

In this study, a PAMAM dendrimer was used as a surface-modifier to study the dyeability of cotton and silk fabrics using a sustainable dye generated from Sargassum sp. seaweed extracts. PAMAM dendrimer is a polymeric molecule characterized with multiple branched monomers containing numerous functional primary amino groups on the surface. These amine groups would readily act as a functional group similar to the structure of the natural protein fibers which is capable to improve the dyeability of textile fibers, especially with natural dyes. The crushed powder of dry Sargassum sp. was macerated for 48 h at 60 ℃ in methanol. The cotton and silk materials were pre-treated with a PAMAM dendrimer at concentrations that were determined in advance before the dyeing process began. The electrokinetic capabilities of these surface-modified fabrics were next investigated by measuring their zeta potential with a SurPASS Electrokinetic Analyzer. Exhaust dyeing and simultaneous mordanting with vinegar, alum and iron were done on both untreated and treated cotton and silk fabrics with a certain amount of PAMAM dendrimer. The dyeing process was carried out at 85 ℃ for intervals of 40, 60 and 80 min. It was discovered that surface-modified cotton and silk materials had a lower negative charge zeta potential, which enhanced their dyeability as well as the percent exhaustion and K/S values of the dyed fabrics. As a result of the surface modification, the zeta potential of the cotton fabric went from −20.40 to −14.63 mV. Similarly, the zeta potential of the surface-modified silk fabric, on the other hand, went from −36.80 to −26.85 mV. However, the percent exhaustion of surface-modified cotton and silk fabrics was increased to 21.17 and 39.99, respectively. Likewise, the K/S ratio of the surface-modified cotton fabric was raised from 0.06 to 0.20. Although the K/S value of the surface-modified silk fabric increased from 0.15 to 0.24. Additionally, the fastness properties of the dyed fabrics were graded as good to exceptional (between 4 and 5), except for lightfastness, which was classified as poor (rated between 3 to 5). Consequently, the sustainable dye from Sargassum sp. seaweed was successfully applied to cotton and silk fabrics. GRAPHICAL ABSTRACT

Evaluation of Sawdust as a Sustainable Dye Source in Ethiopia

Increasing eco-consciousness among consumers is creating an expanding niche market for textiles coloured using natural dyes. Natural dyes are derived from different parts of plants, animals (insects and invertebrates) and minerals. Although plant sources are common, a growing global population makes them compete with food crops. Hence, there is a need to investigate alternate avenues for procuring natural dyes. This research examined the feasibility of utilizing extractions of sawdust, a waste product of the wood furniture industry, as a natural colorant. Sawdust is an inevitable waste generated during the conversion of wood into consumer products such as furniture (tables, chairs, etc.), doors and windows. Sawdust, generated in significant amounts by timber mills, may be used in chipboard manufacture. However, the furniture industry disposes of sawdust as fuel or sometimes as communal waste. In this study, segregated sawdust of the most common woods was collected from Ethiopian furniture houses in Addis Ababa and Bahir Dar. Dyeing was attempted on cotton and wool fabrics using individual aqueous extractions. Different shades were obtained only on wool by simultaneous mordanting with mordants, such as copper sulphate, ferrous sulphate and potassium dichromate, using the exhaust dyeing method. Acceptable fastness to light, perspiration, rubbing and washing, as evaluated according to the relevant ISO standards, was obtained. It may be concluded that sawdust is a viable secondary source of natural dyes for textile coloration in Ethiopia and elsewhere.

Lantana camara flowers as a natural dye source for cotton fabrics

ABSTRACT Environmental concerns about synthetic dyes and their carcinogenic properties renewed interest in eco-friendly natural dyes. Natural dyes produce a wide range of tints and shades with the same dye material. In this study, natural colorants from Lantana camara flowers, a Verbenaceae plant, have been applied to bleached cotton fabrics following pre-mordanting, simultaneous mordanting, and post-mordanting with different chemical mordants (copper sulfate, ferrous sulfate, nickel sulfate, potassium aluminum sulfate, potassium dichromate, stannous chloride). Dyed samples were tested for wash-fastness, light-fastness, and rubbing-fastness, as per Standard IS methods. The colors of dyed pieces were evaluated with color matching software using CIELAB (ΔL*, Δa*, Δb*) coordinates and K/S values for dye absorption on cotton. Pre-mordanting produced good dye uptake. The extracted natural dye was analyzed using Ultraviolet-Visible Spectroscopy, Fourier-Transform Infrared Spectroscopy, and Inductively Coupled Plasma Mass Spectrometry. This study demonstrated that the flowers of Lantana camara are an excellent source of eco-friendly natural dye, and the dye extract is free from heavy metals such as antimony, arsenic, cadmium, and lead. Cotton and natural fiber textiles can be commercially dyed with the dye extracted from the Lantana camara flowers using a variety of chemical mordants to achieve different color shades.

Dyeing Recycled Cotton Fibers Using Curcuma Longa and Pterocarpus Santalinus Natural Dyes and Bio-mordant Chitosan

ABSTRACT Problems such as the depletion of natural resources and the increase in environmental pollution brought about by industrialization, the concept of recycling gained great importance. Natural dyes have gained importance again with the increase in environmental awareness. For this purpose, the dyeability of recycled cotton yarns with natural dyes was examined in order to both protect natural resources and reduce the waste water load in dyeing. The paper also discussed a comparison between different ways to mordant cotton with different molecular weight chitosan. Although it was seen by FTIR analysis that cotton fibers were dyed, the presence of chitosan could not be clearly seen. It was explained by the use of low amounts of chitosan. It was observed that the mordanting processes performed with chitosan contributed to the increase in the color strengths, and higher color depths were obtained with the increasing chitosan concentration. Simultaneous mordanting in Curcuma longa dyeing, mordanting before Sandalwood dyeing provided higher color depths than others. The washing fastness of the samples dyed with Curcuma longa revealed the necessity of fastness improvement processes. It was concluded that chitosan mordanting process was effective in terms of sustainable natural dyeing, but it was necessary to improve fastness.

Detection of trh+ Vibrio parahaemolyticus in seafood by lac dye coloration-based label-free lateral flow immunoassay strip.

Vibrio parahaemolyticus (V.parahaemolyticus) is an important foodborne pathogen known to cause severe enteric disease. Thus, timely detection of V.parahaemolyticus in seafood is crucial to prevent food poisoning and reduce economic losses. Traditional lateral flow immunoassay strips (LFIS) required good labelling materials and pairing of two antibodies, which made them costly and difficult to manufacture. In this study, a label-free and lac dye coloration-based LFIS (LD-LFIS) to detect trh+ V.parahaemolyticus was developed for the first time. Lac dye was used to stain V.parahaemolyticus, and LFIS was used to detect stained bacteria. Dimethyl sulphoxide (DMSO) and simultaneous mordanting were chosen as the best solvent and the best staining method for lac dye. In addition, three mordants [KAl(SO4 )2 ·12H2 O, NH4 Fe(SO4 )2 ·12H2 O, and AlCl3 ·6H2 O] were selected to improve dyeing efficiency. The detection limit of LD-LFIS was 3.9 × 105 CFU/ml when NH4 Fe(SO4 )2 ·12H2 O was used as mordant. Feasibility of the LD-LFIS method was verified by detecting trh+ V.parahaemolyticus in true and spiked seafood samples. The method developed in this study is expected to reduce restrictions on labelling materials and pairing of two antibodies on LFIS, and proposes a novel idea for the rapid detection of V.parahaemolyticus in seafood.

Eco-friendly dyeing of cotton fabric with tender green coconut soft husk

Tender coconut husk, a waste after consuming the coconut water, has been explored as a dye for the colouration of cotton fabric. It is abundant in polyphenolic compounds which are the main coloring agent. The aqueous extraction method is used for obtaining the dye. Different mordanting techniques, such as pre-mordanting, simultaneous mordanting and post mordanting, are used to dye cotton fabric. Tannic acid and alum are used as primary mordants, and ferrous sulphate and copper sulphate are used as secondary mordants. A range of shades is obtained by varying mordants and different mordanting methods. Overall fastness properties of these shades are found good. Dyed fabrics are also found to have an excellent UV protection property.

A novel efficient method for eco-friendly deep dyeing of wool yarns by extracted madder dyes in the presence of additives

Zinc sulfate and magnesium sulfate were used as additives to provide an effective simultaneous mordanting and dyeing process (meta mordant) for wool yarns with madder dyes extracted by ultrasound. In the dyeing procedure, aluminum sulfate and ferrous sulfate were used as mordants. A response surface methodology (RSM) experimental design was used to optimize the dyeing technique. Results showed that the highest color strength of dyed samples was achieved at 105–110 min at 1:30 ratio of aluminum sulfate to zinc sulfate, 1:10 ratio of aluminum sulfate to magnesium sulfate, and pH of 2.5–3. It was observed that the dyeing of yarns with extracted dye and ferrous sulfate could be carried out without using additives. The color properties of dyed yarns using the novel approach were compared to samples dyed using the conventional method (pre-mordant). The findings revealed that dyed samples using the novel approach had the same or greater color strength as dyed samples using the pre-mordant procedure. L* , a* , and b* of the dyed yarns by extracted dyes and aluminum sulfate in the presence of magnesium sulfate were approximately the same with yarns dyed by the pre-mordant method. Also, the color fastness properties of dyed samples by meta mordant method were acceptable in terms of wash, light, and rub fastnesses. Nearly similar or better color stability was achieved compared to the common method. In this respect, a novel efficient one bath method was introduced for deep dyeing of wool yarns with extracted madder dyes which can decrease the negative environmental impacts such as pollutants, water consumption, and energy in comparison to other conventional methods.

Dyeing of silk fabric with eco-friendly natural dye obtained from Nyctanthes arbor-tristis using single mordants

The silk fabric was dyed with natural dyes obtained from the flower of Nyctanthes arbortristis. The fastness properties and colour strength of dyed silk fabric was determined, compared and tabulated. From the comparative study of fastness properties and colour strength of the dyed silk samples, Nyctanthes arbor-tristis.in simultaneous mordanting method with 3% mordant combination gives better results.

Extraction and Applications of Natural dye from the flower of Tagetes erecta.L in different Fabrics and Focus on Antimicrobial activity

The main objective of extracting natural dyes from natural sources is to avoid the environmental pollution. The flower of Tagetes erecta is used for the extraction of dye using alkaline extraction method. There are four different mordants (CuSo4, FeSo4, NaCl, K2Cr2O7) are used in cotton and polyester fabric by simultaneous mordanting method. The dye fixation is carried out at room temperature and also at 100°C. The result revealed that, different shades of yellow, brown and green were obtained from the dye when subjected to mordant. The dye at 100°C showed dark colours and excellent fastness properties when compared to dye fixed at room temperature. The dye extract of Tagetes erecta had a great antimicrobial activity against pathogenic strains of bacteria and fungi and the FT-IR was carried out to identify compounds.

Dyeing Properties of Vilangin Synthesized from Embelin on Cotton Fibre

Semi synthesis involves the use of chemical compounds isolated from natural sources as the starting materials to produce other distinct compounds with added value and improved chemical properties. Most modified dyes have been synthesized through chemical modification to increase solubility and fastness properties of the dyes. A semi-synthetic dye (vilangin) has been obtained through chemical modification of embelin (a benzoquinone) isolated from Embelia schimperi berries crude extract, a plant-based dye. The vilangin dye was synthesized by condensation of embelin with formaldehyde in acetic acid solution., Their melting point and thin layer chromatography was done to determine purity. Characterization was done using Ultraviolet–Visible spectroscopy, Fourier Transform Infrared spectroscopy, Liquid chromatography Mass spectrometry and Nuclear Magnetic Resonance Spectroscopy. Embelin and the semi- synthesized dye were applied on cotton fabrics and colour fastness properties such as wash fastness, rubbing fastness, light fastness were evaluated. Embelin dye and vilangin dye exhibited similar colour strengths (K/S values) of 0.18 and 0.19 respectively. Use of mordants increased the colour strengths from 0.19 to 0.23 for the pre-mordanted cotton fibers ,the post-mordanted were in the range of 0.19-0.32 whereas the simultaneous mordanting showed better characteristics in the range of 0.27-0.52 for the vilangin dye. It has thus been established that the semi-synthetic dye possessed superior fastness properties compared to the parent embelin dye.

A natural yellow colorant from Buddleja officinalis for dyeing hemp fabric

Natural dyes are more eco-friendly alternatives to synthetic dyes. This research focuses on natural dyes and improved dye craft using plants employed by various ethnic groups in Southwestern China. In this study, we assessed the suitability of dried extracts from Buddleja officinalis flowers for dyeing hemp fabric. and valuated indicators including color strength (K/S), color characteristics, and fastness properties in response to washing, rubbing, and perspiration using metallic and natural mordants under pre-, post-, and simultaneous mordanting conditions. Specifically, we investigated the pigment compound crocin by ultraviolet-visible spectroscopy and Fourier transform–infrared spectroscopy analysis before using it to dye hemp fabric. Optimum dyeing conditions including staining temperature, staining duration, and pH have been identified using an orthogonal array experimental design. Optimum results were achieved when dyeing at pH 5, and at 60 °C for 90 min. Hemp fabric dyed without mordant had a shade of yellowness, while fabric mordanted with gum rosin, plant ash, KAl(SO4)2, and Chaenomeles speciosa had a variety of pale to dark yellowness color shades. A darker yellow–green color shade was obtained with FeSO4 mordant. The color change of washing fastness was mostly very poor, while the color stain of washing and perspiration fastness were good to excellent, and rubbing fastness was also good to excellent. The color fastness was kept and improved by the three natural mordants, especially gum rosin and plant ash, but reduced by FeSO4. Those results show that the use of aqueous extract from B. officinalis flowers combined with natural mordants represents a promising approach for textile dyeing, revealing an alternative method that could improve and extend the dyeing properties of this indigenous dye plant. In addition, our findings lay the foundation for further basic studies and demonstrate the utility of preserving natural dye plants, along with the related traditional knowledge of indigenous groups in Yunnan, China.