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Evaluation of Cochlospermum vitifolium Extracts as Natural Dye in Different Natural and Synthetic Textiles

Barriada-Bernal Luis Gerardo, Méndez-Lagunas Lilia Leticia, Aquino-González Laura Victoria, Rodríguez-Ramírez Juan, Sandoval-Torres Sadoth, González Itandehui Arriaga

Autex Research Journal

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2021

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Vol. 21, no. 1

92--100

EN

Cochlospermum vitifolium flowers were evaluated as a raw material of natural dye on different fabrics, natural and synthetic. The dyeing process evaluation was performed by CIELa*b* color coordinates analysis. Color fastness was evaluated using the AATCC 61-1B and AATCC 116 methods. The chemical identification of the compounds in the color fraction was carried out by HPLC–MS/MS. The naringenin was determined to be the color compound. Among the natural textiles, the wool presented the best uniformity of dyeing and fixation of color, achieving the best hue when a pre-mordant treatment was used. The combination of sodium and potassium tartrate dye resulted in the best final hue, between the yellow and red regions of the CIELa*b* space (L = 49.84, a* = 5.41, b* = 45.52). The dyeing of the wool by the sodium and potassium tartrate pretreatment showed the best fastness properties to the laundering test (ΔEab = 54.56), as well as in the rub test (ΔEab = 67.36). The extract of C. vitifolium could be considered as an alternative natural dye for textiles with a protein base (e.g., wool fabrics), obtaining the best results when mordant pretreatment is used.

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Naringenin complexes with copper ions: potentiometric studies

Brodowska K.

Biotechnology and Food Science

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2013

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Vol. 77, nr 1

45--53

EN

Flavanones belong to the group of active flavonoid compounds, rarely occurring in the plant kingdom and are found in many foodstuffs (naringenin and derivatives) and medicinal plant materials. Many studies have demonstrated a relationship between dietary intake of phenolic compounds and reduced risk of cancer and cardiovascular disease. Accordingly, during over several years, flavonoids have gained increasing interest and numerous studies have shown that they possess beneficial properties having a great influence on human health. Acid dissociation constants are believed to be the most useful physico-chemical parameters which describe the extent of ionization of functional groups as a function of pH. It is very important in research areas such as pharmaceutical drug discovery and development due to vital role in understanding the pharmacodynamic properties of new drug substances. Flavonoids are characterized by insolubility in water while they are soluble in organic solvents. Exploiting mixed solvents, especially organic solvent – water mixtures, enables a good alternative for researching on compounds which are inconspicuously soluble or insoluble in water. In this study the dissociation constant of naringenin and its complex with Cu(II) have been determined in aqueous – DMSO solvent mixtures to examine the dependence of their acid-base equilibria on number of substrates.

3

Transformacje naringeniny przez drożdże Rhodotorula marina

Madej A., Popłoński J., Huszcza E.

Przemysł Chemiczny

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2012

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T. 91, nr 5

856-859

PL

Transformacje naringeniny przez drożdże Rhodotorula marina prowadziły do dwóch produktów hydroksylacji: kartamidyny i izokartamidyny, których stężenie zależało od wieku prehodowli, do której dodawano substrat oraz od czasu jego inkubacji w mieszaninie reakcyjnej. Największą wydajność kartamidyny uzyskano po 24 h inkubacji naringeniny dodawanej do 1-dniowej prehodowli, natomiast największe stężenie izokartamidyny obserwowano po 10 h transformacji naringeniny dodawanej do 3-dniowej prehodowli. Aktywność przeciwutleniająca otrzymanych produktów jest wyższa niż zastosowanego substratu i w przypadku izokartamidyny porównywalna do aktywności α-tokoferolu.

EN

Naringenin was converted to carthamidin and isocarthamidin by Rhodotorula marina yeast. The reaction depended on the age of preculture and time of substrate incubation in reaction mixt. The highest yield of carthamidin was obtained after 24 h of incubation of naringenin added to the 1-day-old preculture, while the highest isocarthamidin concentration was observed after 10 h conversion of naringenin added to the 3-day-old preculture.