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Journal ArticleDOI: 10.1080/00405000.2021.1892337

Cotton dyeing performance enhancing mechanism of mangiferin enriched bio-waste by transition metals chelation

04 Mar 2021-Journal of The Textile Institute (Taylor & Francis)-pp 1-13
Abstract: This study reported a sustainable and facile coloration approach of cotton fabric by exploiting mangiferin enriched mango seed kernel bio-waste. The extract principally contains mangiferin and diff...

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Topics: Mangiferin (53%), Kernel (statistics) (50%)
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Journal ArticleDOI: 10.1016/J.RADPHYSCHEM.2021.109426
Abstract: This study demonstrated a green functionalization process of a cellulose substrate by combining the chitosan treatment and gamma radiation. To impart the UV protection characteristics in the cellulosic structure, natural chromophores derived from Banana floral stem (BFS) was grafted in the functionalized cellulose surface. Phytochemical screening was performed to confirm the types of UV protective natural chromophores (UVPNCs) presented in BFS. The result exhibited the presence of condensed tannin, flavonoids, anthocyanin, betacyanin, and anthraquinone as the major UVPNC components in BFS. The optimum conditions for maximum sorption of UVPNCs into the functionalized cellulose matrix were recorded at 80 °C for 60 min. The cationic biopolymer chitosan (2 g/L), different gamma absorbs doses (2, 4, and 6 kGy), and combined chitosan and gamma treatment into cellulose resulted around 15–23%, 44%, and 41–64% improved absorption of UVPNCs, respectively, as demonstrated by the change in color strength (K/S) compared to unmodified cellulose matrix. The concurrent treatments greatly improved the total crystallinity index (TCI), hydrogen bond intensity (HBI), hydrogen bonding energy (EH), hydrogen bonding distance (R) and asymmetric factor (AF) from 1.358 to 1.363, 0.971 to 0.988, 27.15 kJ–27.40 kJ (at 3274 cm−1), 2.766 A to 2.764 A (at 3274 cm−1) and 0.47 to 0.10, respectively. For gamma treatment, 6 kGy irradiation dose provided the best result for improved molecular orientation of cellulose and in combination of chitosan the substrate attained a maximum K/S of 1.98 after UVPNCs grafting. It was found that the UV protection factor (UPF) rating has a linear relationship with the UVPNCs absorption (K/S) and a maximum four-fold increase in UPF (165–506) was evident. The excellent bonding durability of the UVPNCs grafted samples was further ensured in terms of several colorfastness properties. This sustainable functionalization of cellulose with high UPF offers a great promise for applications in health care and photodegradation protection.

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Topics: Cellulose (56%)

5 Citations


Open accessJournal ArticleDOI: 10.1016/J.CLET.2021.100124
01 Jul 2021-
Abstract: Textile coloration using synthetic dyes is not eco-friendly and has detrimental impact on wearer skin. Hence, natural dye is assumed as a suitable alternative for sustainable textile manufacturing and coloration. In this study, we utilized Turmeric (Curcuma longa L.) extract for cotton fabric dyeing. Additionally, biomordants (derived from Citrus lemon and Colocasia esculenta bulk) and metallic mordants (Potassium dichromate and Potash alum) pre-treatments were carried out to upturn the overall uptake of dyes into the fabric interior. The resulted color-strength (K/S) of biomordant pretreated sample was two times higher (K/S=8.6) than the metal mordanted sample (K/S=4.0). To investigate the fastness properties of dyed fabric varities, colorfastness to rub (dry and wet), wash, water, and perspiration test were performed and found superior result for bio-crosslinkers compared to metallic salts chelation. Futhermore, the visual uniformity and moisture absorption on the hue (h*) by the final dyed samples were also found excellent in both mordanted dyed fabrics. Thereby, this dyeing process propossed the viability of natural dyestuff with synthetic auxiliaries for facile cotton fabric coloration. Therefore, the utilization of Turmeric extract as a usefull dye source and Citrus lemon, Colocasia esculenta bulk extract as biomordant could reckon a positive insight for cleaner textile manufacturing and dyeing.

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Topics: Dyeing (59%), Mordant (55%), Natural dye (53%)

4 Citations


Journal ArticleDOI: 10.1016/J.SCP.2021.100417
Abstract: This study reported a facile structural modification of cellulosic fabric (cotton) by applying two different polyphenol enriched extracts derived from the banana floral stem (BFS) and watermelon rind (WR) for imparting UV protective functionality. The dye extracts are comprised of various UV protective natural chromophores (UVPNCs) such as tannin, flavonoids, anthraquinone, anthocyanin, betacyanine. The concentrations and absorbance intensities of UVPNCs were confirmed by phytochemical screening and UV spectroscopy. Better absorption behavior for BFS and WR chromophores into cellulose was found at 80 °C and 60 °C temperature with a constant runtime of 60 minutes. At this conditions, the fixation rate of BFS and WR was 53-63% and 25–85%, respectively. Furthermore, cellulose substrates were chelated with different types of metals (Al3+, Sn2+, Fe2+, and Cu2+) to promote the chromophore fixation. The effect of metal chelation with cellulose chain was estimated in terms of crystallinity indices, hydrogen bonding configurations and asymmetric factor, which were correlated with the enhanced UVPNCs fixation. The higher amount of BFS and WR chromophores were absorbed for Fe2+ and Cu2+, demonstrating ~61% and ~ 26% improvement in color strength (K/S), respectively. The formation of UVPNCs-metal-cellulose complex, decreased the UV transmission rate of the BFS and WR dyed fabrics. Interestingly, BFS dyed substrate exhibited higher (UPF = 50+) UV shielding ability compared to WR dyed substrate (UPF = 4.20) due to higher UVPNCs absorbance intensities and bonding capacity of BFS extract. Finally, the durability of functionality of BFS and WR dyed substrates was confirmed in terms of various colorfastness.

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4 Citations


Journal ArticleDOI: 10.1016/J.ETI.2021.101621
Abstract: This study reported a sustainable comparative cotton dyeing mechanism of condensed and hydrolyzable tannin enriched extracts by exploiting watermelon rind (WR) and mango seed kernel (MSK) bio-waste. Both crude dye extracts possess various coloring chromophores such as flavonoid, betacyanin, quercetin, β -carotene together with condensed and hydrolyzable tannin at a different level of concentrations, which were confirmed by several phytochemical screenings, thin layer chromatography, and UV spectroscopy. At optimized reaction condition, the resulted fixation rates of various WRCs (at 60 ° C for 60 min) and MSKCs (at 90 ° C for 60 min) were found as 25%–75% and 55%–71%, respectively. MSKCs have higher absorbance intensity and proactive anchoring sites than those of WRCs, resulting in three times higher color strength (K/S). For promoting the dye fixation, cotton fabric samples were chelated with different types of metallic salts (Fe2+, Al3+, Sn 2 + , and Cu 2 + ) and 65% and 45% enhanced color strength was found for WRCs (K/S increased from 0.95 to 1.57) and MSKCs (K/S increased from 2.75 to 3.98), respectively. The effects of metal chelation with cellulose chain were estimated in terms of several crystallinity indices, hydrogen bonding configurations, and asymmetric factor and elaborately correlated with the improved dye fixation. In addition, the electrolyte was also added to the dye bath for further improvement of dye exhaustion, thereby granted 12% and 6% higher color depth for WR (K/S increased from 1.57 to 1.76) and MSK dyed fabric (K/S increased from 3.98 to 4.23). Finally, distinguishing colorimetric appearances and excellent colorfastness properties were ensured for different tannin classes.

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Topics: Hydrolyzable Tannin (59%)

2 Citations


Journal ArticleDOI: 10.1016/J.SCP.2021.100452
Abstract: This study reported a facile and sustainable modification of cellulose by plant tannins and chitosan polymer for higher impregnation of UV protective natural chromophores (UVPNCs) derived from the banana floral stem (BFS). The phytochemical screening demonstrated that BFS extracts have different UVPNCs including condensed tannin, flavonoids, anthocyanin, betacyanin and anthraquinone. The optimized impregnation temperature and time for UVPNCs entrapping were found at 80 °C with a time interval of 60 min and the overall inherent fixation rate of UVPNCs was ranging from 53 to 63%. The cellulose substrate templated with plant tannins (extracted from Terminalia chebula and Phyllanthus emblica) and chitosan improved the UVPNCs absorption amount almost 2 and 1.8 folds, respectively, which was expressed in terms of color strength (K/S). Interestingly, the UVPNCs entrapping ability of bio-crosslinked cellulose was also higher than typical metallic salts treated cellulose. The higher absorption mechanism of UVPNCs for tannins (-OH and –COOH) and chitosan (-NH2) templating have been discussed in terms of molecular orientation (TCI, LOI), inter and intra-molecular hydrogen bonding configuration (HBI, EH, R), and the total amount of anchored-UVPNCs which was expressed by the asymmetric factor (AF). The UV shielding property of the UVPNCs impregnated modified cellulose was compared and a maximum of two folds higher UPF value was found in bio-templated cellulose substrate (UPF range = 223 to 459) than metal treated cellulose substrates (UPF range = 163 to 175). Furthermore, the functional durability of UVPNCs impregnated substrates was evaluated in terms of several colorfastness and found very good to excellent grading.

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Topics: Cellulose (57%), Terminalia chebula (55%)

2 Citations

References
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49 results found


Open accessBook
12 May 1970-
Topics: Flavonols (55%)

3,554 Citations


Open accessBook ChapterDOI: 10.5772/35482
23 May 2012-
Abstract: Infrared spectroscopy is nowadays one of the most important analytical techniques available to scientists. One of the greatest advantages of the infrared spectroscopy is that virtually any sample in any state may be analyzed. For example, liquids, solutions, pastes, powders, films, fibres, gases and surfaces can all be examined with a judicious choice of sampling technique. The review by Annette, Sudhakar, Ursula and Andrea [1-2] also demonstrates the applicability of dispersion infrared spectroscopy for natural fibres studies.

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386 Citations


Journal ArticleDOI: 10.1016/J.BEJ.2005.08.004
Abstract: Batch experiments were carried out for the sorption of methylene blue onto mango seed kernel particles. The operating variables studied were initial solution pH, temperature, adsorbent mass, initial dye concentration and contact time. Equilibrium data were fitted to Freundlich and Langmuir isotherm equation and the equilibrium data were found to well represented by Langmuir isotherm equation. The monolayer sorption capacity of mango seed kernel for methylene blue sorption was found to be 142.857 mg/g at 303 K. The sorption kinetics was found to follow pseudo first order kinetic model. The methylene blue uptake process was found to be controlled by both surface and pore diffusion with surface diffusion at the earlier stages followed by pore diffusion at later stages. The average effective diffusion coefficient was calculated and found to be 5.66 × 10−4 cm2/s. Analysis of sorption data using Boyd plot confirms that the external mass transfer as the rate limiting step in the sorption process. Various thermodynamic parameters such as enthalpy of sorption ΔH, free energy change ΔG and entropy ΔS were estimated. The positive value of ΔH and negative values of ΔG shows the sorption process is exothermic and spontaneous. The positive value of entropy ΔS shows the increased randomness at the solid–liquid interface during the sorption of dye ions onto mango seed kernel particles.

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Topics: Sorption (66%), Freundlich equation (54%), Langmuir adsorption model (50%) ... read more

262 Citations


Open accessJournal ArticleDOI: 10.1007/S13659-017-0119-9
Mohd Yusuf1, Mohd Shabbir2, Faqeer Mohammad2Institutions (2)
Abstract: With the public’s mature demand in recent times pressurized the textile industry for use of natural colorants, without any harmful effects on environment and aquatic ecosystem, and with more developed functionalities simultaneously. Advanced developments for the natural bio-resources and their sustainable use for multifunctional clothing are gaining pace now. Present review highlights historical overview of natural colorants, classification and predominantly processing of colorants from sources, application on textiles surfaces with the functionalities provided by them. Chemistry of natural colorants on textiles also discussed with relevance to adsorption isotherms and kinetic models for dyeing of textiles.

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188 Citations


Journal ArticleDOI: 10.1016/J.FOODCHEM.2006.10.017
01 Jan 2007-Food Chemistry
Abstract: Egyptian mango seeds were collected as wastes from local fruit processing units and the kernels were separated and dried. This study was carried out on mango seed kernels to clarify their proximate composition, amino acids, phenolic compounds and the characteristics of the extracted oil including unsaponifiable matter constituents, lipid classes and fatty acid composition. Mango seed kernels contained a considerable amount of total phenolic compounds, total lipid, unsaponifiable matter, and a low amount of crude protein, but the quality of protein was good because it was rich in all essential amino acids. Eight phenolic compounds were identified; tannin and vanillin were in highest amounts. Unsaponifiable matter showed the occurrence of high amounts of squaline followed by sterols and tocopherols. Stearic acid was the main saturated fatty acid, while oleic acid was the major unsaturated fatty acid in all lipid classes. The fatty acid composition of total lipid and neutral lipid was similar, while phospholipid had a high amount of palmitic, linoleic and linolenic acids.

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Topics: Saturated fatty acid (63%), Unsaturated fatty acid (62%), Oleic acid (57%) ... read more

185 Citations


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