Study on Dyeing of Lyocell Knitted Fabric with Grape Seed Extract Dyes

The natural vegetable dye grape seed extract (GSE) was applied on the direct dyeing of lyocell knitted fabric. By changing the dyeing condition, the modified process was derived after evaluating various fastnesses of the dyed fabric. The direct dyeing method should be under the condition of GSE’s concentration 5g/L, bath preparation temperature 80°C, pH value 3, bath ratio 1:30, dyeing time 60min. The color is very sensitive to pH and GSE’s concentration. The rubbing fastness, washing fastness and light fastness is good, the acid perspiration fastness is better than the alkaline perspiration fastness.

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AGSE: A Novel Grape Seed Extract Enriched for PP2A Activating Flavonoids That Combats Oxidative Stress and Promotes Skin Health

Molecules ◽

10.3390/molecules26216351 ◽

2021 ◽

Vol 26 (21) ◽

pp. 6351

Author(s):

Kristen L. Huber ◽

José R. Fernández ◽

Corey Webb ◽

Karl Rouzard ◽

Jason Healy ◽

...

Keyword(s):

Oxidative Stress ◽

Expression Profiles ◽

Gene Expression Profiles ◽

Grape Seed Extract ◽

Grape Seed ◽

Seed Extract ◽

Dermal Fibroblasts ◽

Phosphatase 2A ◽

Normal Human ◽

Better Than

Environmental stimuli attack the skin daily resulting in the generation of reactive oxygen species (ROS) and inflammation. One pathway that regulates oxidative stress in skin involves Protein Phosphatase 2A (PP2A), a phosphatase which has been previously linked to Alzheimer’s Disease and aging. Oxidative stress decreases PP2A methylation in normal human dermal fibroblasts (NHDFs). Thus, we hypothesize agents that increase PP2A methylation and activity will promote skin health and combat aging. To discover novel inhibitors of PP2A demethylation activity, we screened a library of 32 natural botanical extracts. We discovered Grape Seed Extract (GSE), which has previously been reported to have several benefits for skin, to be the most potent PP2A demethylating extract. Via several fractionation and extraction steps we developed a novel grape seed extract called Activated Grape Seed Extract (AGSE), which is enriched for PP2A activating flavonoids that increase potency in preventing PP2A demethylation when compared to commercial GSE. We then determined that 1% AGSE and 1% commercial GSE exhibit distinct gene expression profiles when topically applied to a 3D human skin model. To begin to characterize AGSE’s activity, we investigated its antioxidant potential and demonstrate it reduces ROS levels in NHDFs and cell-free assays equal to or better than Vitamin C and E. Moreover, AGSE shows anti-inflammatory properties, dose-dependently inhibiting UVA, UVB and chemical-induced inflammation. These results demonstrate AGSE is a novel, multi-functional extract that modulates methylation levels of PP2A and supports the hypothesis of PP2A as a master regulator for oxidative stress signaling and aging in skin.

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Preliminary Studies on the Application of Grape Seed Extract in the Dyeing and Functional Modification of Cotton Fabric

Biomolecules ◽

10.3390/biom10020220 ◽

2020 ◽

Vol 10 (2) ◽

pp. 220 ◽

Cited By ~ 1

Author(s):

Ling Guo ◽

Zhi-Yi Yang ◽

Ren-Cheng Tang ◽

Hua-Bin Yuan

Keyword(s):

Cotton Fabric ◽

Grape Seed Extract ◽

Grape Seed ◽

Seed Extract ◽

Uv Protection ◽

Health Protection ◽

Finishing Agent ◽

Acidic Nature ◽

The One ◽

Dyed Fabric

Cotton has the shortcomings of having no antibacterial, antioxidant and ultraviolet (UV) protection properties, which are of great importance for health protection purposes. In the present study, grape seed extract (GSE) mainly composed of proanthocyanins (tannins) was employed to simultaneously import pale colors and the three aforementioned functions to cotton fabric. The tests on the application conditions of GSE showed that pH and GSE concentration had great impact on the color depth of cotton fabric, and the color hue of dyed fabric could be controlled in the absence of pH regulators due to the weakly acidic nature of GSE solution. The fabric dyed with 10%owf (on the weight of fabric) GSE exhibited an excellent inhibition effect towards Escherichia coli, whereas the one dyed with 20%owf GSE had high antioxidant activity of 97%. The fabric dyed with 5%owf GSE offered excellent UV protection. This study reveals that GSE can be used as a functional finishing agent for health protection in cotton textiles in addition to coloration capability.

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Grape Seeds Extract as Brain Food: A Review

International Journal of Pharmaceutical and Clinical Research ◽

10.25258/ijpcr.v9i1.8270 ◽

2017 ◽

Vol 9 (1) ◽

Author(s):

Souad El Gengaihi ◽

Doha H. Abou Baker

Keyword(s):

Antioxidant Activities ◽

Complex Mixture ◽

Grape Seed Extract ◽

Grape Seed ◽

Seed Extract ◽

Amyloid Peptide ◽

Grape Seeds ◽

Potential Benefits ◽

Reduced Risk

Interest in the biological role of bioactive compounds present in medicinal herbs has increased over the last years. Of particular interest are plants that have an anti-Alzheimer activities. Several plants can be useful for Alzheimer (AD) management. Such as these which have anti-inflammatory activity, acetylcholinesterase (AChE) inhibitory action, antiapoptotic, slow the aggregation of amyloid peptide and antioxidant activities. Grape seed extract (GSE) is a complex mixture of several compounds, mostly represented by polyphenols and flavonoids. Their consumption is safe and is recognized to exert several health benefits. GS flavonoids have been associated with the reduced risk of chronic diseases, we present some findings on the potential benefits of GSE for the treatment of AD.

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Grape Seed Extract Complex (FFM-GS) Inhibits Postmenopausal Symptoms: In Vitro and In Vivo S

Journal of the Korean Society of Food Science and Nutrition ◽

10.3746/jkfn.2019.48.3.297 ◽

2019 ◽

Vol 48 (3) ◽

pp. 297-305

Author(s):

Minhee Lee ◽

Da-Eun Nam ◽

Soo-Jeung Park ◽

Dakyung Kim ◽

Jeong-Moon Yun ◽

...

Keyword(s):

Grape Seed Extract ◽

Grape Seed ◽

Seed Extract ◽

Postmenopausal Symptoms

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Comparative Evaluation of Immediate Bond Strength to Bleached Enamel Following Application of Various Antioxidant Solutions

Dental Journal of Advance Studies ◽

10.1055/s-0038-1672088 ◽

2017 ◽

Vol 05 (02) ◽

pp. 084-089

Author(s):

Alisha Dhingra ◽

Ashu Gupta ◽

Anshu Minocha ◽

Nayantara Sen

Keyword(s):

Bond Strength ◽

Shear Bond Strength ◽

Grape Seed Extract ◽

Grape Seed ◽

Seed Extract ◽

The Other ◽

Sodium Ascorbate ◽

Group V ◽

Group I ◽

Significant Difference

Abstract Aim: The aim of this study was to compare the reversal of shear bond strength of composite to bleached enamel immediately after bleaching followed by application of various antioxidant solutions. Material and Methods: Seventy central incisors were divided into seven groups. Groups I and II served as unbleached and bleached controls respectively. Groups III, IV, V, VI and VII served as the experimental groups and were subjected to 37.5% hydrogen peroxide bleaching followed by 10 min application of 10% sodium ascorbate, 25% alpha-tocopherol, 6.5% grape seed extract, 5% lycopene and 5% green tea extract respectively. Following composite bonding, shear bond strength was determined and the results were analyzed using ANOVA followed by Post Hoc Multiple Comparisons test. Results: The bond strength values for Group I (positive control) were maximum and significantly different than all the other groups except Grape seed extract group (Group V). When compared to Group II (bleached control), all the groups showed significantly higher bond strength. Significant difference in the bond strength values were seen between Group III (10% sodium ascorbate) and Group V. Also values for Group V were significantly different from Group VI (5% lycopene). All the other values showed insignificantly different results. Conclusion: All the antioxidant solutions improved the shear bond strength values after bleaching but only Grape seed extract application reversed the values to the non bleached levels. Lycopene was least effective. Other antioxidants showed comparable results.

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