scholarly journals Chemical and Physicochemical Composition of Watermelon Seed Oil Citrullus lanatus L and Investigation of the Antioxidant Activity Chemical constituents and Antioxidant Activity of Citrullus lanatus L Seed Oil

2018 ◽  
Author(s):  
GANIYAT K ◽  
SODEEQ A
Keyword(s):  
Antioxidant Activity ◽  
Seed Oil ◽  
Citrullus Lanatus ◽  
Chemical Constituents ◽  
Physicochemical Composition ◽  
Watermelon Seed

scholarly journals Moringa oleifera Seed Oil Formulation Physical Stability and Chemical Constituents for Enhancing Skin Hydration and Antioxidant Activity

Cosmetics ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 2
Author(s):  
Sirivan Athikomkulchai ◽  
Prakairat Tunit ◽  
Sarin Tadtong ◽  
Pensak Jantrawut ◽  
Sarana Rose Sommano ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Moringa Oleifera ◽  
Seed Oil ◽  
Chemical Constituents ◽  
Skin Irritation ◽  
Radical Scavenging ◽  
Skin Hydration ◽  
Hydration Level ◽  
Moringa Oleifera Seed

Moringa oleifera seed oil has been recognized for its benefits in relation to the skin. The objective of this study was to evaluate the chemical composition and antioxidant activity of moringa seed oil, to formulate a moringa seed oil cream, and to determine the efficacy of moringa seed oil cream in vivo. The chemical components of moringa seed oil were analyzed by high-performance liquid chromatography and gas chromatography. The antioxidant activity of the oil was determined by a 2,2-diphenyl-1-picrylhydrazyl (DPPH) free-radical scavenging assay. An oil-in-water cream containing moringa seed oil was developed and characterized for antioxidant activity. The moringa seed oil cream was further subjected to the accelerated stability test of heating–cooling cycles for six cycles and stored isothermally at 4, 30, and 45 °C for 28 days. The efficacy of moringa seed oil cream was investigated in 32 participants by measuring their skin hydration, erythema, melanin values, and visco-elasticity. The results showed that moringa seed oil contained α-tocopherol, plant sterols, and fatty acids. The oil had antioxidant activity with a 50% of initial concentration (IC50) value of 121.9 mg/mL. The stability study indicated that the pH, viscosity, and rheological behavior of the cream containing moringa seed oil were not significantly changed after storage at 4, 30, and 45 °C for 28 days and six heating–cooling cycles. The moringa seed oil cream exhibited in vitro antioxidant activity and increased the in vivo skin hydration level compared with the cream base. There was no report of skin irritation from moringa seed oil cream application, suggesting that the moringa seed oil cream developed in this study was appropriate for pharmaceutical and cosmetic uses. A M. oleifera seed oil cream was successfully developed. The moringa seed oil cream possessed antioxidant activity, enhanced the skin hydration level, and reduced skin erythema, but did not affect the melanin content and skin visco-elasticity. The moringa seed oil cream did not induce skin irritation and, thus, was safe to use.

Antioxidant Activity and Protective Effect against Oxidative Stress on Hippocampal HT22 Cells of Tea Seed Oil

2018 ◽  
Vol 24 (1) ◽  
pp. 53-59
Author(s):  
Jong Min Kim ◽  
Seon Kyeong Park ◽  
Jin Yong Kang ◽  
Seong-kyeong Bae ◽  
Ga-Hee Jeong ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Antioxidant Activity ◽  
Protective Effect ◽  
Seed Oil ◽  
Ht22 Cells ◽  
Tea Seed Oil

Experimental analysis on DI diesel engine characteristics using watermelon seed oil with Magnesium oxide

2021 ◽  
Author(s):  
S. Ganesan ◽  
S. Mahalingam ◽  
J. SenthilKumar ◽  
J. Hemanandh ◽  
S.P. Venkatesan ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Magnesium Oxide ◽  
Experimental Analysis ◽  
Seed Oil ◽  
Watermelon Seed ◽  
Di Diesel Engine

Evaluation of green extraction processes, lipid composition and antioxidant activity of pomegranate seed oil

2021 ◽  
Author(s):  
E. Rojo-Gutiérrez ◽  
O. Carrasco-Molinar ◽  
J. M. Tirado-Gallegos ◽  
A. Levario-Gómez ◽  
M. L. Chávez-González ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Lipid Composition ◽  
Seed Oil ◽  
Green Extraction ◽  
Pomegranate Seed Oil ◽  
Extraction Processes ◽  
Pomegranate Seed

scholarly journals Quality of Watermelon Juice Concentrated by Forward Osmosis and Conventional Processes

Processes ◽  
2020 ◽  
Vol 8 (12) ◽  
pp. 1568
Author(s):  
Rebecca R. Milczarek ◽  
Carl W. Olsen ◽  
Ivana Sedej
Keyword(s):  
Antioxidant Activity ◽  
Large Scale ◽  
Citrullus Lanatus ◽  
Forward Osmosis ◽  
Soluble Phenolics ◽  
Nutritional Components ◽  
Watermelon Juice ◽  
Juice Concentrate ◽  
And Storage

Watermelon (Citrullus lanatus) juice is known for its refreshing flavor, but its high perishability limits its availability throughout the year. Watermelon juice concentrate has extended shelf-life and lower transportation and storage costs, but the conventional thermal evaporation process for concentrating juice degrades the nutritional components and sensory quality of the product. Thus, in this work, a large-scale, non-thermal forward osmosis (FO) process was used to concentrate fresh watermelon juice up to 65°Brix. The FO concentrate was compared to thermal concentrate and fresh juices, and to commercially available refrigerated watermelon juices, in terms of lycopene and citrulline content, total soluble phenolics, antioxidant activity, and sensory properties. The FO concentrate had statistically similar (p < 0.05) levels of all the nutrients of interest except antioxidant activity, when compared to the thermal concentrate. The reconstituted FO concentrate maintained the same antioxidant activity as the raw source juice, which was 45% higher than that of the reconstituted thermal concentrate. Sensory results showed that reconstituted FO concentrate resulted in highly liked juice, and it outperformed the reconstituted thermal concentrate in the sensory hedonic rating. This work demonstrates the possibility to produce a high-quality watermelon juice concentrate by forward osmosis.

scholarly journals Determination of Chemical Constituents and Antioxidant Activities of Leaves and Stems from Jatropha cinerea (Ortega) Müll. Arg and Jatropha cordata (Ortega) Müll. Arg

Plants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 212
Author(s):  
Yeimi Cecilia Vega-Ruiz ◽  
Corina Hayano-Kanashiro ◽  
Nohemí Gámez-Meza ◽  
Luis Angel Medina-Juárez
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Biological Effects ◽  
Chemical Constituents ◽  
Weather Conditions ◽  
Antioxidant Compounds ◽  
Leaf Extracts ◽  
Methanolic Extracts ◽  
Northwestern Region ◽  
High Concentrations

Jatropha species have been shown to be an important source of secondary metabolites with different biological effects. Jatropha cinerea (Ortega) Müll. Arg and Jatropha cordata (Ortega) Müll. Arg are distributed in the Northwestern region of Mexico, are adapted to extreme weather conditions and are widely used (stems, leaves, and sap) in traditional medicine. The aim of the present study was to carry out the phytochemical characterization and the evaluation of the antioxidant activity in methanolic extracts of stems and leaves from J. cinerea and J. cordata. The compounds present in the extracts of both species were characterized by ESI-IT-MS/MS and quantified by HPLC-DAD. The results showed that the stem extracts of both species are rich in phenolic acids, while the leaf extracts are rich in flavonoids. Some of the main compounds found were gallic acid, gentisic acid, 3,4-Dihydroxybenzoic acid, vitexin, isovitexin, and catechol. Both species showed high concentrations of phenols and total flavonoids and antioxidant activity. J. cordata showed the highest antioxidant capacity and the highest concentration of phenolic compounds. Overall, both Jatropha species are a natural source of antioxidant compounds with potential biotechnological uses.

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