Effect of ascorbic acid (vitamin C) on the ESR spectra of the red and black hair: pheomelanin free radicals are not always present in red hair

Chikvaidze, E; Topeshashvili, Maia

doi:10.1002/mrc.4291

Cited by 5 publications

(4 citation statements)

References 38 publications

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“…The ESR spectra of the sample were measured before and after irradiation. The irradiation was conducted by a xenon lamp at an extensity of 300 W, and the samples were placed at a certain distance to avoid heating. , …”

Section: Methodsmentioning

confidence: 99%

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Multifunctional Hair Dyeing with Curcumin via Thiol-Michael Click Reaction

Wu,

Ma,

et al. 2024

ACS Appl. Eng. Mater.

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Plant-based colorants in hair dyeing are popular due to their lower toxicity for health and the environment compared to conventional chemically synthesized dyes. However, the application of plant colorants in hair dyeing is limited due to their low adsorption and poor fastness. In this study, we aimed to enhance the hair dyeing performance of a plant-based colorant (curcumin) by prelinking thiol groups (referred to as "click dyeing") and investigated the dyeing effect and restorative function. The results demonstrated that click dyeing significantly improved curcumin's coloring ability and color fastness, with the retention ratio of color reaching 80% after seven shampoo washes. Additionally, click dyeing enhanced the mechanical properties of the bleached hair and reduced keratin loss. Fluorescence labeling experiments confirmed that curcumin reacted with the introduced thiol groups through a thiol-Michael click reaction. After click dyeing, the mechanical properties of the hair fibers were repaired due to the formation of chemical bonds during the click reaction, resulting in a 9.81% increase in tensile strength compared to bleached hair before the hair dyeing process. The mechanism behind this enhancement lies in the restoration of the keratin conformation by click dyeing, bringing various properties back to their original state. Furthermore, the study verified curcumin's ability to resist photoaging through xenon arc lamp radiation and electron spin resonance (ESR) spectroscopy.

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Section: Methodsmentioning

confidence: 99%

“…The irradiation was conducted by a xenon lamp at an extensity of 300 W, and the samples were placed at a certain distance to avoid heating. 35,36…”

Section: Antiphotoaging Activity Testmentioning

confidence: 99%

Multifunctional Hair Dyeing with Curcumin via Thiol-Michael Click Reaction

Wu,

Ma,

et al. 2024

ACS Appl. Eng. Mater.

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“…Nevertheless, the various environmental conditions such as light, moisture, metal ions, heat, and base can cause denaturation and decomposition of physicochemical properties in ASA. Mg-Al LDH as an antacid and anti-pepsin agent is quite biocompatible, so it can be used as a good reservoir to protect ASA against decomposition ( 26 27 28 29 30 ).…”

Section: Introductionmentioning

confidence: 99%

Facile and fast preparation of layered double hydroxide as a nanocarrier for ascorbic acid under ultrasonic irradiation

Asadi

Khodamoradi

Dinari

2022

Research in Pharmaceutical Sciences

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Background and purpose: Layered double hydroxides (LDHs) as inorganic materials are being used in controlled release and drug delivery systems. These materials are more stable than conventional drug carriers. In this investigation, Mg/Al-ascorbic acid (ASA) LDH nanohybrid was synthesized by ultrasonic-assisted co-deposition techniques. Experimental approach: In this study, Mg/Al-LDH to adsorption of ASA anions from the alkaline solution was assembled by a facile coprecipitation technique. During this process, ultrasonic irradiation was used to increase the rate of ion exchange between LDH and ASA. The intercalated-layered structure was characterized by FT-IR spectroscopy, XRD, thermogravimetric analysis, field emission SEM, and TEM. ASA releasing from Mg/Al-ASA LDH nanohybrid was carried out in incubation sodium carbonate solution (0.5 M) at 35 °C using UV-Vis absorbance analysis at λ = 265 nm Findings/Results: The used techniques confirmed the structure of Mg/Al-LDH and indicated successful intercalation of ASA into the interlayer galleries of the LDH host. The obtained results also have shown that Mg/Al-ASA LDH nanohybrid was generated with an average diameter size of 25 nm and narrow size distribution. Analysis of the release profiles using several kinetic models suggested that the first-order rate model is the most appropriate for describing the release of ASA from Mg/Al-LDH which means the amount of drug released is proportional to the amount of remaining drug in the matrix. Thus, the amount of activity released tends to decrease in function of time. Conclusion and implications: The results showed that LDHs are good host materials to preserve the biomolecule and modify its release rate and bioavailability.

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“…With the development of social technology and the improvement of free radical research technology, it has been found that the production mechanism of exercisable endogenous free radicals also includes neutrophil mechanism, prostaglandin mechanism, and calcium mechanism [1]. The mitochondrial mechanism and xanthine oxidase mechanism are generally considered two mechanisms for the production of sportive endogenous free radicals [2]. Modern medical planners are more inclined to believe that free radicals are the cause of many diseases in the body and that acute intense exercise produces a large number of free radicals [3].…”

Section: Introductionmentioning

confidence: 99%

The Image Analysis of the Visual Sensor and the Effect of Vitamin E Supplementation on Football Players’ Free Radicals and Their Physical Strength Supplement

Wei

2021

Journal of Sensors

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With the help of image analysis technology of visual sensors, the research discusses the supplementation of vitamin E on free radicals and physical strength of football players after intensive exercise. The free radical supplementation and physical strength supplementation of athletes after strenuous exercise by taking a proper amount of vitamin E were studied and discussed. The effects of vitamin E on free radical metabolism, serum antioxidant level, and antioxidant enzyme activity and serum lipid peroxide metabolism after acute exercise can be generalized. 40 football players were recruited from the sports department of a physical education college in our province and randomly divided into the experimental group and the control group. The experimental group was divided into the T1 group and the T2 group, and the control group was also divided into the C1 group and the C2 group accordingly, with 10 players in each group. After the football league, the C1 and T1 groups will perform maximal aerobic exercise, and the C2 and T2 groups will perform intermittent anaerobic exercise. Serum malondialdehyde (MDA), total antioxidant capacity (T-AOC), glutathione peroxidase (GSH-PX), and superoxide dismutase (SOD) were determined. The comparison between the control group taking placebo and the experimental group taking vitamin E for a period of time shows that the average values of MDA are 3.25 ± 0.31 (nm/ml) and 4.20 ± 0.78 (nm/ml), respectively. After taking vitamin E, the antioxidant level of the experimental group was significantly higher than that of the control group, serum antioxidant enzyme activity decreased, serum lipid peroxidation products decreased significantly, and more free radicals were generated immediately after aerobic exercise. Vitamin E can significantly reduce the generation of free radicals during football players’ intermittent anaerobic exercise and improve the body’s antioxidant capacity.

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Effect of ascorbic acid (vitamin C) on the ESR spectra of the red and black hair: pheomelanin free radicals are not always present in red hair

Cited by 5 publications

References 38 publications

Multifunctional Hair Dyeing with Curcumin via Thiol-Michael Click Reaction

Multifunctional Hair Dyeing with Curcumin via Thiol-Michael Click Reaction

Facile and fast preparation of layered double hydroxide as a nanocarrier for ascorbic acid under ultrasonic irradiation

The Image Analysis of the Visual Sensor and the Effect of Vitamin E Supplementation on Football Players’ Free Radicals and Their Physical Strength Supplement

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