Characterization of a Natural Dye by Spectroscopic and Chromatographic Techniques

Espinosa-Morales, Yolanda; Reyes, J.; Hermosín, Bernardo; Azamar-Barrios, J.A.

doi:10.1557/opl.2012.1377

Cited by 8 publications

(4 citation statements)

References 18 publications

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“…The graph clearly indicates the binding of carotenoid and lipids with cotton fabric, when it is dyed. Characterization of dye obtained from the leaves of Justicia spicigera-using FTIR has revealed the presence of anthocyanin groups [24].The previously mentioned data indicates the potentiality of the orange dye obtained from the aril of C.paniculatus with/without mordant in cotton dyeing industry. Cotton fabric samples mordanted with different combinations of alum, ferrous sulphate and copper sulphate have shown various shades of yellow and orange.…”

Section: Resultsmentioning

confidence: 74%

Extraction and characterization of natural dye from arils of Celastrus paniculatus Willd. for textile application

Tejavathi¹,

Niranjan²

2018

IJSRBS

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Celastrus paniculatus Willd., is one of the important medicinal plants belongs to the family Celastraceae. The present study is carried out for the first time to extract natural pigment from the arils, which are of orange-red in colour. The dye was extracted with hot water boiling method. The color of the extracted dye is orange. However, the orange color changes to yellowish-orange on cotton fabric when dyed .The dye potential of the extract was evaluated by dyeing on cotton fabrics without/with mordants such as ammonium ferric sulphate, ferrous sulphate, and copper sulphate. Shades of yellow color were observed when different mordants were used. Ferrous sulphate and copper sulphate have exhibited good coordination complexes with dye molecules that have reflected in imparting bright yellow shades to the fabric. The dyed cotton fabric was tested for color fastness by light, rub and wash fastness. The fabric showed no significant changes in rub and light fastness. However, studies have showed slight fading in color when subjected to wash fastness. The spectroscopic characteristics were determined with the help of UV-Vis and FTIR. UV-Vis spectral analysis of both mordanted and unmordanted dye have revealed varied peaks for the pigments indicating different binding affinity of mordants with chromphore groups within the pigments that give different shades. Analysis of dye by Infrared spectroscopic study has displayed the presence of carotenoid content at 940cm ˉ¹. The findings disclosed that the extraction of dye from aril of Celastrus paniculatus Willd. has promising prospect in textile industry.

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Section: Resultsmentioning

confidence: 74%

Extraction and characterization of natural dye from arils of Celastrus paniculatus Willd. for textile application

Tejavathi¹,

Niranjan²

2018

IJSRBS

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“…On the other hand, Schreiber et al observed that the complexation of delphinidin with metallic ions like Al 3+ displaced λ max even 589 nm. (Espinosa-Morales et al 2012) At pH 6.0-7.5, the aqueous extract achieved purple color at λ max = 589, but further increase in pH induced a bluish shift to reach maximum around pH = 8.0, while after pH = 8.0 up to 12.0, the λ max values decreased. The pH variation also affected color intensity of color extract.…”

Section: Uv-visible Spectroscopy Analysis and Stability Studiesmentioning

confidence: 89%

Evaluation of microscopic structure of Justicia wynaadensis and the stability of its color extracted by using conventional and microwave extraction method

Patil¹,

Nigudkar²,

Sane³

et al. 2015

J Food Sci Technol

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Justicia wynaadensis locally known as Moddu Soppu belongs to the family Acanthaceae. The aqueous bluish purple color extracted from the leaves and stems of Justicia is used in the preparation of a sweet dish by the natives of Kodagu district, Karanataka, India, exclusively during the monsoons. This traditional practice is believed to keep the people healthy throughout the year. Owing to its potential to be used as a natural colorant there is a strong need to develop efficient extraction method for maximum yield of colorant and preliminary scientific study of stability. Microscopy was carried out to find out the location of purple color in both leaves and stem and to study the anatomical details. An optimized microwave extraction method for extraction of colorant from Justicia has been developed. The microwave oven extraction yield of colorant is 9.41 % (±0.8598) under the optimized conditions of extraction time 30 min., extraction temperature 150°C and ratio of liquid to solid 30 ml/g. The study demonstrated that the purple extract of the plant was stable against pH range 6.0-8.0, low temperature (4°C), high temperature (≥50°C) and sensitive to light. Thus these observations recommend the use of J. wynaadensis extract as a food colorant in neutral or slightly alkaline products (bakery, milk, egg etc.) and could be the potential source for the food colorant market.

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“…Several techniques of separation are employed in the characterization of the bioactive compounds in plant extracts, such as UV-Vis spectrometry, FT-IR, NMR, and mass spectrometry [15]. FT-IR is a known valuable tool for the identification and characterization of diverse functional groups present in unknown plant extracts [16,17].…”

Section: Introductionmentioning

confidence: 99%

FT-IR Analysis of Beta vulgaris Peels and Pomace Dye Extracts and Surface Analysis of Optimally Dyed-Mordanted Cellulosic Fabrics

Rotich

Wangila

Cherutoi

2022

Journal of Chemistry

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FT-IR spectroscopy is a nondestructive technique that can be utilized for the qualitative characterization of natural dyes and dyed substrates through structure elucidation. This work aimed at the characterization of natural dye extract from Beta vulgaris peels and pomaces and surface analysis of optimally dyed-mordanted cotton (cellulosic) fabric using Fourier Transform Infrared (FT-IR) spectroscopy, as well as colour fastness tests (light, washing, rubbing, and perspiration). Response surface methodology (RSM) was employed in the optimization of dyeing temperature (T), time (t), and pH, as well as applying the relative percent change in colour strength (ΔE) of dyed fabrics as the response. The natural mordants (tannic acid-alum) were compared with synthetic mordants (K2Cr2O7, FeSO4, and CuSO4) using the three mordanting methods. The optimized dyeing parameters were T (55°C), t (75 minutes), and pH (6.5), as a result of comparatively high relative % ΔE (11%). The FT-IR analysis of the extract revealed different characteristic absorption peak values for various functional groups: 3282.82 cm−1 (–OH stretch), 2932.96 cm−1 (C–H stretch), and 1588.91 cm−1 (C=N stretch), among others. The C=N bond stretch biomarks the presence of nitrogen-containing compounds such as the reddish betanin pigments. p > 0.05 of the dyeing parameters implied that they are not significant but affect dyeing probably alongside other factors such as mordanting. The spectral analysis of bleached and optimally dyed (nonmordanted and mordanted) fabrics revealed varied peaks indicating different functional groups suggesting the presence of cellulose and the binding of mordants with chromophores in the dye extract which yield different shades. Postmordanting showed mean ratings of 4-5 (excellent) among all fastness tests, displayed by tannic acid-alum, FeSO4, and CuSO4. Generally, mordanting resulted in enhanced dye stability and improved colour fastness. To identify specific chromophores in dye extracts and their molecular configurations due to mordants, advanced FT-IR hyphenated systems can be employed.

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Characterization of a Natural Dye by Spectroscopic and Chromatographic Techniques

Cited by 8 publications

References 18 publications

Extraction and characterization of natural dye from arils of Celastrus paniculatus Willd. for textile application

Extraction and characterization of natural dye from arils of Celastrus paniculatus Willd. for textile application

Evaluation of microscopic structure of Justicia wynaadensis and the stability of its color extracted by using conventional and microwave extraction method

FT-IR Analysis of Beta vulgaris Peels and Pomace Dye Extracts and Surface Analysis of Optimally Dyed-Mordanted Cellulosic Fabrics

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