Stabilitas Epigalokatekin Galat Dalam Krim Ekstrak Teh Hijau Dengan Variasi Konsentrasi Antioksidan Vitamin C 1% Dan Vitamin E 1%

Sugihartini, Nining; Susanti, Hari; Zaenab, Zaenab; Hanifah, Hana; Marlina, Siti Ayu

doi:10.24071/jpsc.2016.130201

Cited by 2 publications

(2 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is characterized by detecting GTE in all skin layers, especially in the dermis layer (9.2%). In addition, epigallocatechin gallate (EGCG) the main phenolic compound in GTE, turns out to have poor stability because it is very susceptible to oxidation due to several factors (exposure to light, temperature, pH, and others), so it must be overcome by using a suitable delivery system (Sugihartini et al, 2016;Shi et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

The Effect of Decyl Glucoside on Stability and Irritability of Nanostructured Lipid Carriers-Green Tea Extract as Topical Preparations

Azzahrah

Rosita

Purwanto

et al. 2022

JFIKI

View full text Add to dashboard Cite

Background: Green Tea Extract (GTE) is a natural antioxidant compound that can protect the skin from photocarcinogenesis (DNA damage due to ultraviolet exposure). GTE has low stability, which needs a delivery system such as Nanostructured Lipid Carriers (NLC) with decyl glucoside (DG) as a natural surfactant that at the right concentration can produce a significantly small particle size which can improve the stability of the NLC. Objective: To determine the effect of DG usage on the characteristics, physical stability, and irritability of NLC-GTE preparation. Methods: NLC-GTE preparation used the High Shear Homogenization (HSH) method with three formulas, which contained DG 2%, 2.5%, and 3% consecutively. Afterwards, the characteristic and physical stability tests were conducted using the thermal cycling method for three cycles with two different temperatures (48 hours/cycle, 2 - 8°C and 40°C). The irritability test used Hen's Egg Test on the Chorioallantoic Membrane (HET-CAM) method. Results: Characteristic test of organoleptic showed that all formulas were white, odorless, and had a semi-solid consistency. However, the pH, particle size, and polydispersity index values from all formulas were within the normal range of values. The physical stability test result showed that 3% DG was the most stable formula. This formula was within the non-irritating range of values in HET-CAM. Conclusion: NLC-GTE with an increased concentration of DG as a surfactant can improve the characteristics and physical stability of the preparation. F3 (3% DG) is the best formula compared to other formulas and indicates non-irritating in the HET-CAM test.

show abstract

Section: Introductionmentioning

confidence: 99%

The Effect of Decyl Glucoside on Stability and Irritability of Nanostructured Lipid Carriers-Green Tea Extract as Topical Preparations

Azzahrah

Rosita

Purwanto

et al. 2022

JFIKI

View full text Add to dashboard Cite

show abstract

“…Cream is very suitable for skin care because it is an easy to use, soothing, moisturizing, and easy to penetrate the skin so as to provide the desired effect in healing. Cream of green tea leaf extract with the addition of 1% Vitamin C has a higher antioxidant activity compared to green tea leaf extract cream with the addition of 1% Vitamin E [12]. Another research proved that preparations of green tea with 1-4% green tea extract and 5% TiO 2 have relatively good physical stability [13].…”

Section: Introductionmentioning

confidence: 99%

Development of Sunscreen Products Containing Green Tea Leaf Extract

et al. 2021

View full text Add to dashboard Cite

Objective: The purpose of this research was to determine antioxidant activity of green tea leaf extract, the value of sun protection factor (SPF),physical properties, and stability of green tea cream.Methods: Green tea leaf extract was obtained by maceration using 96% ethanol. Cream was prepared in three formulas with various concentrationof the green tea leaves extract. The physical evaluations included organoleptic, pH, viscosity, adhesion, spreadability, and stability tests weredone. The determination of the SPF value is calculated using the Mansur equation. Extract of green tea leaf has strong antioxidant activity(IC50 2.19 μg/ml).Results: The green tea leaf extract showed high antioxidant activity (2.19 μg/m). All formulas are organoleptically creamy brownish-green to brown,with a distinctive green tea odor and homogeneous. All formulas met the requirements of physical properties of cream. The creams showed significantchange while they were stored at 4°C and at 40±2°C, but showed no difference when they were stored ad 26°C. SPF values of cream are 0.54; 2.03,and 2.41, respectively.Conclusions: It is clearly indicated that the sunscreen cream of green tea leaf extract is potential to be further developed as cosmetic preparations.

show abstract

Stabilitas Epigalokatekin Galat Dalam Krim Ekstrak Teh Hijau Dengan Variasi Konsentrasi Antioksidan Vitamin C 1% Dan Vitamin E 1%

Cited by 2 publications

References 3 publications

The Effect of Decyl Glucoside on Stability and Irritability of Nanostructured Lipid Carriers-Green Tea Extract as Topical Preparations

The Effect of Decyl Glucoside on Stability and Irritability of Nanostructured Lipid Carriers-Green Tea Extract as Topical Preparations

Development of Sunscreen Products Containing Green Tea Leaf Extract

Contact Info

Product

Resources

About