Total Phenolic Content, Antioxidant Capacity and UV Radiation Protection Properties of Marigold (Calendula officinalis), Carrot (Daucus carota), Tomato (Solanum lycopersicum) and Hop (Humulus lupulus) Extracts

Abstract

Total phenolic content using Folin–Ciocalteu method, antioxidant capacity by CUPRAC method and sun protection properties were measured for four different extracts of selected plants: marigold petals, carrot roots, tomato fruits and hop cones. Three types of extracts: water, oil and water-glycolic (1:4) were studied. Assessment of sun protection properties for extracts obtained from selected plants was first done by mathematical indication method and subsequently done spectrophotometrically. In a method of mathematical indication of UV protection based on absorption spectra, four parameters were determined regarding sun protection properties at different concentrations of selected plant extracts. Absorbance generally increased with an increase of concentration of extracts, but an expected increase of particular parameters was not obtained in all samples. The water-glycolic extract from hop cones was characterized by the highest content of phenolic compounds (among all studied samples) and high antioxidant activity. It also showed high radiation protection. Data for four parameters like UVA/UVB parameter, UVA1/UV parameter, SUI parameter and critical wavelength was generated, and the three first parameters were the highest for water and water-glycolic extracts of marigold. Among all plants, hop cones were characterized by the highest SPF for all types of extracts. SPF values increased with the concentration of extracts, but an increase of the weight of dried plants used to prepared extracts did not influence sun protection factor.

Exploring the potential use of pomegranate (Punica granatum L.) and prickly pear (Opuntia ficus indica L.) peels as sources of cosmaceutical sunscreen agent for their antioxidant and photoprotective properties

“…The results of reducing power to FRAP (reduction Fe 3+ to Fe 2+ ) and CUPRAC (reduction Cu 3+ to Cu 2+ ) indicate that pomegranate fruits peels extract was significantly (p˂0.0001) stronger than prickly pear fruit peels extract (Table 1), with strong ability to reduce Fe 3+ to Fe 2+ and Cu 3+ to Cu 2+ as reported by Qabaha et al and Benslimane et al [28][29] using the FRAP and CUPRAC assays.…”

“…Human skin as the main organ of the human body, is constantly exposed to external factors, which can generate free radicals, so there is a continual need for testing the antioxidative properties of several plant extracts. It is commonly known that the topical use of antioxidants in cosmetics can better protect and possibly correct the damage of the skin by neutralizing free radicals and, in the final effect, act as an antiaging agent 29 . Phenolic content, especially flavonoids have an excellent antioxidant effect because they have a chromophore group that can absorb UV A and UV B rays thereby reducing its intensity on the skin 30 .…”

Evaluation of Ethno-Veterinary Grasses from Suburbs through Microscopic Technique: Insights into Antioxidant Defense System and Phenol

“…After that the volume was raised up to 25 mL by adding distilled water and placing it for 90 minutes. The absorbance was then measured at 725 nm wavelength [55].…”

Anti-Obesity Effect of Daidzein Derived from Pachyrhizus erosus (L.) Urb. Extract via PPAR Pathway in MDI-Induced 3T3-L1 Cell Line

“…A representative polyphenolic compound is catechins found in green tea. Examining the structure of polyphenols reveals multiple hydroxyl groups (-OH) attached to the phenol group, allowing easy interaction with other compounds and exhibiting antioxidant, anti-inflammatory, and various physiological effects [23]. This experiment used a modified Folin-Ciocalteu method to measure the total polyphenol content in P. erosus roots [24].…”