DPPH scavenging capacity of extracts from Camellia seed dregs using polyol compounds as solvents

Abstract

This study investigated the properties of extracts of Camellia oleifera Abel seed dregs, which were extracted using polyol compounds. Solvents employed to extract the Camellia seed dregs included water, methanol, ethanol, and polyol compounds. The examined properties included ultraviolet (UV) absorbance, total polyphenol content, total flavonoid content, and 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging efficiency as an antioxidant ability. The results revealed that the glycerol, glycerol plus ethanol, and propylene glycol plus ethanol solvents yielded extracts with greater DPPH scavenging efficiency and total polyphenol and flavonoid content than the water, methanol, and ethanol solvents did. In addition, the polyol plus ethanol solvents yielded extracts with greater DPPH scavenging efficiency, total polyphenol and flavonoid content, and antioxidant ability than the single polyol solvents did. Furthermore, both the UV and infrared absorption spectra and color reaction test of triterpenoid glycosides revealed that polyol or polyol–ethanol solvents effectively extracted quintessential ingredients such as flavonoids and triterpenoid glycosides and other polyphenols from the Camellia seed dregs. In addition, because polyols are moisture-retaining and nontoxic solvents, the extracts can be directly added to cosmetics after simple filtration. Without the need for solvent separation, C. oleifera Abel dregs extracts exhibit excellent potential for application in products such as body washes, shampoos, hair conditioners, skin care products, cosmetics, and sunscreen lotions.

Optimization of Enzyme-Assisted Extraction and Purification of Flavonoids from Pinus koraiensis Nut-Coated Film and Antioxidant Activity Evaluation

“…In addition, the purified flavonoids have stronger antioxidant effects than the crude extracts, which is related to the purity of flavonoids. After purification by macroporous resin, the antioxidant capacity of flavonoids from Glycyrrhiza glabra L. leaf was increased by 2–3 times [ 27 ]. The scavenging rates of DPPH and ABTS free radicals of 100 μg/mL purified flavonoids from Moringa oleifera leaves were 85.99% and 84.79%, respectively [ 28 ].…”

Developing New Health Material: The Utilization of Spray Drying Technology on Avocado (Persea Americana Mill.) Seed Powder

“…The values are taken from average of triplicates measurements. Previous studies have showed that phenol is one of the major plant compounds with antioxidant activity [24]. It was reported that the antioxidant activity of phenolic and polyphenolic compounds was mainly due to their redox properties, and they play an important role in absorbing and neutralizing free radicals, quenching singlet and triplet oxygen, or decomposing peroxides [24].…”

“…DPPH is a stable free radical that produces a purple solution in ethanol. It is reduced and decolorized in the presence of antioxidant molecules and is often used to evaluate free radical scavenging activities of antioxidants, such as natural and synthetic pure compounds and plant extracts [24]. The ability to scavenge free radicals can be demonstrated by the degree of discoloration of the sample or extract.…”

Aktivitas Antimikroba Dan Antioksidan Ekstrak Dan Fraksi Daun Tembelekan (Lantana camara L.)

“…Etanol adalah pelarut golongan alkohol yang bersifat polar dan cenderung bersifat tidak selektif, sehingga dapat mengekstraksi berbagai jenis dan golongan metabolit sekunder dalam suatu simplisia, termasuk flavonoid dan senyawa fenolik (Swamy et al, 2015). Terdapat korelasi positif antara kandungan fenolik dalam suatu sampel dengan aktivitas antioksidannya (S. Kumar et al, 2014;Tsai & Lin, 2019).…”