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Journal ArticleDOI: 10.1080/00405000.2020.1763057

A natural dye extracted from the leaves of Mimusops Elengi Linn and its dyeing properties on cotton and silk fabrics

04 Mar 2021-Journal of The Textile Institute (Informa UK Limited)-Vol. 112, Iss: 3, pp 455-461
Abstract: In this study, the dyeing properties of a natural dye, extracted from the leaves of mimusops elengi Linn, on cotton and silk fabric were examined. Leaves are always an attractive choice as a raw ma...

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Topics: Mimusops elengi (65%), Dyeing (55%), Natural dye (51%)

5 results found

Journal ArticleDOI: 10.1080/15440478.2020.1870618
Abstract: The worldwide demand has been raised to use natural dyes in all applied fields of life due to their environmental-friendly and therapeutic nature. For the current study microwave rays as an eco-fri...

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Topics: Dyeing (51%)

4 Citations

Journal ArticleDOI: 10.1007/S11356-021-15669-6
Shahid Adeel1, Shumaila Kiran1, Muhammad Shahid2, Sajid Raza Habib1  +2 moreInstitutions (2)
Abstract: The worldwide resurgence of natural dyes in all fields is due to the carcinogenic effects of effluent loads shed by synthetic industries. Coconut coir (Cocos nucifera) containing tannin as a source of natural colorants has been selected for coloration of bio-mordanted silk under the influence of ultrasonic radiations at various dyeing conditions. For extraction of tannin dye from cocos powder, different media were employed, and dyeing variables such as dyeing time, dye bath pH, dyeing bath temperature, and the effect of salts on dyeing were optimized. For achieving new shades with excellent color characteristics, bio-mordants in comparison with chemical mordants were employed. It has been found that acid-solubilized extract after ultrasonic treatment for 45 min has yielded high color strength, when coconut coir extract of 4 pH from 6g of cocos powder, containing 5g/100mL salt solution as exhaust agent, was used to dye silk at 75°C for 65 min. Among bio-mordants turmeric (K/S=13.828) and among chemical mordants iron has shown excellent results (K/S=2.0856). Physiochemical analysis of fabric before and after US treatment shows that there is no change in the chemical structure of the fabric. It is found that ultrasonic waves have excellent potential to isolate the colorant followed by dyeing and environmental friendly mordanting at optimal conditions, but also the usage of herbal-based plant anchors, i.e., bio-mordants, has made the natural dyeing process more sustainable and clean.

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Topics: Dyeing (64%), Cocos nucifera (54%), Coir (54%) ... read more

2 Citations

Open accessJournal ArticleDOI: 10.1016/J.CRGSC.2021.100151
01 Jan 2021-
Abstract: Natural dye extracted from Mucuna slonaei F leaves (MSL) was used as green, sustainable and eco-friendly alternative in coloring cotton fabric with and without sodium chloride (NaCl), ferrous sulfate (FeSO4·7H2O) and alum (KAl(SO4)2·12H2O) as mordants. Effects of these mordants on color parameters (exhaustion (%), lightness (L∗), color axes (a∗ and b∗), hue angle (ho), color strength (K/S) and fastness properties evaluated) of MSL dyed cotton fabric were investigated. Flavonoids were identified as main chromophoric constituents in extracted MSL dye by UV–visible and Fourier transform infrared (FTIR) spectrophotometry techniques. Satisfactory color parameters in unmordanted MSL dyed fabric indicated that cotton fabric has a moderate affinity for the extracted dye. Metal pre-mordanting enhanced dye exhaustion by 4.85, 13.10 and 10% in Sodium chloride (Na+), ferrous sulfate (Fe2+) and alum (Al3+) dyed cotton fabrics respectively. Unmordanted MSL dyed fabric has lighter shade, higher L∗ and lower K/S value than metal salt pre-mordanted fabrics. The value of a∗ greater than b∗ and ho ​

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Topics: Mordant (55%), Dyeing (53%)

1 Citations

Journal ArticleDOI: 10.1080/15440478.2021.1993410
Abstract: There has been recently a worldwide interest in the production and application of natural dyes due to the growing awareness about cleaner surroundings and healthy lifestyle. The new sources of natu...

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Topics: Phoenix dactylifera (62%), Dyeing (57%), Natural dye (53%)

Journal ArticleDOI: 10.1007/S11356-021-16447-0
Mahmood Ul Hasan, Shahid Adeel, Fatima Batool1, Tanvir Ahmad  +3 moreInstitutions (2)
Abstract: In the current pandemic scenario, sustainable green products particularly antiviral, antioxidant, and antibacterial in nature are gaining worldwide fame in almost every walk of life. Cassia obovata (C. obovata) has been valorized as a source of yellow natural dye for nylon dyeing. For the isolation of dye extracts and for surface tuning, nylon fabrics were treated with microwave rays up to 10 min. For getting new shades with good to excellent fastness characteristics, sustainable bio-mordants in comparison with chemical mordants have been used at 60 °C, 70 °C, and 80°C. It has been found that for getting effective colorant yield, acidic extract should be exposed to MW ray treatment up to 6 min, and for getting improved fastness rating, bio-mordants have given excellent color characteristics. Statistical optimization of dyeing variable shows that application of 40 mL of C. obovata acidic extract of RE of 6 pH containing 3 g/100 mL of salt when employed at 55 °C for 45 min has given excellent results onto irradiated nylon fabric (RNF). It is inferred that Cassia obovata has an excellent potential for coloration of surface-modified fabrics, where the application of low amount of bio-mordants under statistical optimized conditions has made process more ecological, economical, and sustainable.

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Topics: Dyeing (56%), Mordant (52%)

14 results found

Open accessJournal Article
Abstract: Natural dyes, which were pushed during the last sixty years into the background by synthetic dyes, are recently again becoming object of consumer interests. This is due to the awareness of possible risks during production of synthetic dyes which involve use of petrochemical based raw materials and the violent chemical reactions for their synthesis. The manufacture of such dyes is energy intensive with adverse impact on environment adding to its pollution. Many of these dyes, especially the azo- based ones, are found to be carcinogenic. In this background, a brief review of natural colourant from plant sources, their classification, chemical constituents responsible for producing different colours, its activities and effect of different mordants on the hue is discussed. Different classes of mordants employed for fixation of natural colouration on textiles substrated, its mechanism and plant sources are also discussed.

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74 Citations

Journal ArticleDOI: 10.1016/J.FOODRES.2011.01.063
Abstract: India is one of the world's biodiversity hotspots and reports confirm that a great variety of fruiting trees are indigenous to this region of the world Mimusops elengi Linn (family Sapotaceae) commonly known as Bakul is one such tree native to the Western Ghat region of the peninsular India However, today this tree is also found growing in other parts of the tropical and subtropical regions of the world The tree is of religious importance to the Hindus and finds mention in various mythological texts The stem, barks, leaves and fruits are used in various Ayurvedic and folk medications to treat various ailments In the prehistoric days the ripe fruits were an important source of diet but today no one knows of its dietary use as it is seldom used Studies suggest the tree contains medicinally-important chemicals, particularly the triterpenes and alkaloids Preclinical studies in the past five years have shown that the extracts prepared from Bakul possess antibacterial, antifungal, anticariogenic, free radical scavenging, antihyperglycemic, antineoplastic, gastroprotective, antinociceptive and diuretic effects, thus lending pharmacological support to the tree's ethnomedicinal uses in Ayurveda In this review for the first time attempt is made at addressing the chemical constituents, medicinal uses and validated pharmacological observations of Bakul

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Topics: Mimusops elengi (57%)

52 Citations

Open accessJournal ArticleDOI: 10.4236/GSC.2017.71003
Abstract: Indians have been considered as forerunners in the art of natural dyeing. Although indigenous knowledge system has been practiced over the years in the past, the use of natural dyes has diminished over generations due to lack of documentation and precise knowledge of the extracting and dyeing techniques. As a result, natural dyes are not commercially successful. Presently, all environmentally unfriendly synthetic compounds are used for dyeing textile materials. They are non-biodegradable, carcinogenic and generate water pollution as well as waste disposal problems. Natural dyes provide a reasonable solution to these problems. Thus, it is imperative to develop technology for extraction of natural dyes and for their application on textile materials. In this study, attempt has been made to extract natural dyes from a variety of plants sources (such as rhizomes of turmeric, Curcuma longa; fruits of harda, Terminalia chebula; petals of safflower, Carthamus tinctorius; roots of barberry, Berberis lycium etc.) using specific techniques. These dyes were tested for their dyeing potential on different textile materials (cotton, silk and wool). Dyeing was done using three different dyeing techniques (pre-, simultaneous- and post-mordanting) wherein different mordants such as alum, copper sulphate and ferrous sulphate etc., were used to fix dye on to the textile material. A rainbow of natural dyes was obtained with varied shades of each colour. Shade cards were prepared for each dye and the colour obtained varied depending on the type of the mordant applied and the mordanting technique used.

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Topics: Dyeing (68%), Mordant (56%), Terminalia chebula (55%) ... read more

39 Citations

Open accessJournal ArticleDOI: 10.1186/S40689-015-0007-9
Mohammad Gias Uddin1Institutions (1)
14 Jul 2015-
Abstract: The aim of the study was to evaluate the performance of dyes extracted from mango leaves in silk dyeing. Extraction medium was optimized by extracting dyes from fixed quantity of crushed leaves under pH values from 3 to 12. The maximum relative color strength of the extracted dye liquor was found to be at pH 10. The optimum dye extraction conditions i.e., the temperature, time, and material-to-liquor ratio were found to be 98 °C, 60 min, and 1:10, respectively. Dyeing was carried out with the optimized dye extract on mordanted and unmordanted silk fabrics. The dyed materials were evaluated by measuring the color yield and fastness properties. It was concluded that the color values were found to be influenced by the addition of mordants, consequently different fashion hues were obtained from the same dye extract using different mordants. It can also be said that mango leaves have good potentiality for dyeing of silk fabric.

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Topics: Dyeing (64%), Mordant (57%)

38 Citations

Journal ArticleDOI: 10.1002/APP.37613
Narendra Reddy1, Shinyoung Han1, Yi Zhao1, Yiqi Yang1Institutions (1)
Abstract: Curcumin, a yellow pigment known to have various biological activities, was applied onto cotton as an antimicrobial agent. Curcumin could provide both color and antimicrobial activity to cotton and can be dyed using a batch or continuous process. However, curcumin and cotton have low affinity and therefore the ability of curcumin to impart durable antimicrobial activity on cotton needs to be studied. In this research, the ability of curcumin dyed onto cotton fabrics to inhibit the growth of Escherichia coli and Staphylococcus aureus was studied. Relationships that can predict the rate of inhibition based on the curcumin concentration or shade depth (K/S values) were developed without the need for an antimicrobial test. Durability of antimicrobial activity to laundering and to light was also studied. Curcumin was more effective in inhibiting S. aureus than E. coli. The reduction of bacteria and durability of antimicrobial activity of curcumin to laundering was inferior on cotton fabrics compared with wool. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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Topics: Antimicrobial (53%), Curcumin (50%)

27 Citations

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