Effects of Extraction Solvent Mixtures on Antioxidant Activity Evaluation and Their Extraction Capacity and Selectivity for Free Phenolic Compounds in Barley (HordeumvulgareL.)

2006 ◽  
Vol 54 (19) ◽  
pp. 7277-7286 ◽  
Author(s):  
Haifeng Zhao ◽  
Jianjun Dong ◽  
Jian Lu ◽  
Jian Chen ◽  
Yin Li ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Solvent Mixtures ◽  
Extraction Capacity ◽  
Extraction Solvent ◽  
Activity Evaluation

scholarly journals Phenolic Profile and Antioxidant Activity of Pulp and Peel from Peach and Nectarine Fruits

2016 ◽  
Vol 44 (1) ◽  
pp. 175-182 ◽  
Author(s):  
Branka T. STOJANOVIC ◽  
Snezana S. MITIC ◽  
Gordana S. STOJANOVIC ◽  
Milan N. MITIC ◽  
Danijela A. KOSTIC ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Prunus Persica ◽  
Biological Activities ◽  
Economic Value ◽  
Antioxidant Properties ◽  
Fruit Peel ◽  
Extraction Solvent ◽  
Phenolic Profiles ◽  
Antioxidant Characteristics

Peach (Prunus persica L.) is a fruit of high nutritional and economic value. Carbohydrates, dietary fibers, minerals and organic acids are among the major constituents of peach fruit, which contribute to the nutritional quality of both fresh fruits and juice. Polyphenolic compounds found in peach may play an important role in physiological functions related to human health. Different polyphenolics may have varied biological activities including antioxidant activity. In this study antioxidant characteristics between peel and pulp of different peach cultivars (‘Radmilovčanka’, ‘June Gold’, ‘Blake’, ‘Hale’, ‘Vesna’, ‘Adria’) and one of nectarine (‘Fantasia’) were investigated. The peel and pulp extracts showed a huge amount of total phenolics (TP), total flavonoids (TF), total hydroxycinnamates (TH) and total flavonols (TFL), ranging from 42.7-211.4, 11.1-128.5 mg GAE/100 g fresh weight (f.w.) (TP), 21.9 -94.9, 5.0-58.9 mg CE/100 g f.w. (TF), 28.4-389.2, 8.5-165.8 mg kg-1 f.w. (TH) and 17.3-54 mg kg-1 f.w. (TFL). High contents of phenolic compounds were significantly correlated with high antioxidant capacities. Peach pulp and peel differ significantly in their phenolic profiles: the pulp contains mainly chlorogenic, neochlorogenic and p-coumaric acids, whereas the peel possesses chlorogenic, neochlorogenic and p-coumaric acids together with several flavonol glycosides in huge amounts. Our results indicate that cultivar and extraction solvent play important roles in phenolic compositions and antioxidant properties of peach and nectarine extracts, which was shown using statistical analysis (ANOVA). There are high correlations between extracted phenolic compounds and peach and nectarine cultivars, and used solvent and part of the fruit (peel and pulp).

scholarly journals Comparative Study on Phenolic Compounds and Antioxidant Activities of Hop (Humulus lupulus L.) Strobile Extracts

Plants ◽  
2022 ◽  
Vol 11 (1) ◽  
pp. 135
Author(s):  
Jae Il Lyu ◽  
Jaihyunk Ryu ◽  
Kyoung-Sun Seo ◽  
Kyung-Yun Kang ◽  
Sang Hoon Park ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Phenolic Compound ◽  
Antioxidant Activities ◽  
Water Extract ◽  
Ethanol Extract ◽  
Antioxidant Property ◽  
Flavonoid Compound ◽  
Total Phenolic ◽  
Extraction Solvent

In this study, we investigated the phenolic compounds in hop strobile extracts and evaluated their antioxidant property using DPPH and ABTS assay. The total phenolic compound (TPC) and total flavonoid compound (TFC) estimated in two different solvent extracts considerably varied depending on the extraction solvent. The most abundant phenolic compound in hop strobile was humulones (α-acid) with levels ranging from 50.44 to 193.25 µg/g. El Dorado accession revealed higher antioxidant activity in ethanol extracts (DPPH: IC50 124.3 µg/mL; ABTS: IC50 95.4 µg/mL) when compared with that of the other accessions. Correlations between DPPH (IC50) scavenging TFC in ethanol extract (TFC_E, −0.941), and TPC_E (−0.901), and between ABTS (IC50) scavenging TFC_E (−0.853), and TPC_E (−0.826), were statistically significant at p < 0.01 level, whereas no significant correlation was observed between antioxidant activities, TPC and TFC in water extract. This study is the first to report that variations in the level of phenolic contents and antioxidant activity of various hop cultivars depended on the type of extraction solvent used and the cultivation regions. These results could provide valuable information on developing hop products.

scholarly journals Effects of Different Extraction Methods and Solvents on the Phenolic Composition and Antioxidant Activity of Silybum Marianum Leaves Extracts

2018 ◽  
Vol 5 (3) ◽  
pp. 3641-3647 ◽  
Author(s):  
Abbassia Benchaachoua ◽  
Hassiba Mahdjoub Bessam ◽  
Imene Saidi
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Condensed Tannin ◽  
Ethanolic Extract ◽  
Extraction Methods ◽  
Aqueous Methanol ◽  
Silybum Marianum ◽  
Antioxidant Power ◽  
Extraction Solvent ◽  
Percentage Yield

Objective: The objectives of this study were essentially to evaluate the best technique for extracting phenolic compounds from Silybum marianum leaves. Subjects and Methods: Two extraction methods (maceration and decoction), using four extraction solvents. The efficiency of the extraction methods was estimated by quantifying the total polyphenol contents by the Folin -Ciocalteu method and by determining the antioxidant power of the various extracts by the ability to trap the free radical DPPH °, and the influence of these parameters on the antioxidant activity. Results: The results showed that the extracts of the leaves by maceration have contained the highest percentage yield (24.68%); the highest content in the aqueous -methanol polyphenols extract (18.75 ± 0.55 mg GAE / g DW ) against the decoction is more effective for the extraction of flavonoids and condensed tannins. The highest content of flavonoids had been recorded for the aqueous- ethanolic extract (5.08 ± 0.57 CE mg / g DW). The water had the highest content of condensed tannin (03.86 ± 0.22 TAE / g DW). On the other hand, the aqueous -ethanolic and aqueous -methanol extract of the leaves obtained by maceration have the best antioxidant capacity (73.84 ± 5.90 EAG / g DW and 73.64 ± 5.93 mg EAG / g DW respectively) and the aqueous extract of the leaves by decoction had a better antiradical power (48.64 μg / ml). Conclusion: The extraction of phenolic compounds from Silybum marianum leaves was strongly influenced by the type of solvent and the extraction method. In addition, it is very difficult to choose an appropriate extraction solvent for all plant samples.

Effect of extraction solvent on the phenolic compounds content and antioxidant activity of Ramon nut (Brosimum alicastrum)

2019 ◽  
Vol 73 (7) ◽  
pp. 1647-1657 ◽  
Author(s):  
V. M. Moo-Huchin ◽  
J. C. Canto-Pinto ◽  
L. F. Cuevas-Glory ◽  
E. Sauri-Duch ◽  
E. Pérez-Pacheco ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Extraction Solvent ◽  
Brosimum Alicastrum ◽  
Ramon Nut

scholarly journals Comparison of the Effect of Acids in Solvent Mixtures for Extraction of Phenolic Compounds From Aronia melanocarpa

2020 ◽  
Vol 15 (7) ◽  
pp. 1934578X2093467
Author(s):  
Jasmina Petreska Stanoeva ◽  
Elena Balshikevska ◽  
Marina Stefova ◽  
Oliver Tusevski ◽  
Sonja G. Simic
Keyword(s):  
Phenolic Compounds ◽  
Solvent Mixture ◽  
Extraction Yield ◽  
Total Phenolic ◽  
Hydroxyl Groups ◽  
Solvent Mixtures ◽  
Extraction Solvent ◽  
Aronia Melanocarpa ◽  
Hydroxycinnamic Acid Derivatives ◽  
Pure Methanol

Thirty-two different solvent mixtures containing methanol and acid (acetic, formic, and hydrochloric); methanol, water, and acid; and pure methanol were tested for their efficiency for extraction of phenolic compounds from aronia ( Aronia melanocarpa) belonging to the groups of anthocyanins, flavonols, and hydroxycinnamic acid derivatives. Thirteen compounds were detected and quantified in the extracts using HPLC/DAD/ESI-MS n. The yield of each compound and group was evaluated with regard to the extraction solvent composition. Extraction mixtures containing HCl were superior to the ones containing acetic or formic acid for the extraction yield of total phenolic compounds, which was especially pronounced for anthocyanins. The solvent mixture containing methanol/water/HCl (90:8:2, v/v/v) gave best results for the qualitative and quantitative assay of anthocyanins. However, this solvent mixture caused O-methylation of 3- and 5-caffeoylquinic acids transforming them to 3- and 5-feruloylquinic acids, respectively, during extraction. This peculiar finding must be taken into account during sample preparation for the analysis of polyphenols in any sample. It was observed that this O-methylation is specific for dihydroxycinnamic acid compounds containing neighboring hydroxyl groups. These results suggest the need for a detailed study of the behavior of various polyphenolic compounds during extraction with solvent mixtures containing methanol/HCl since it is very often used for the analysis of anthocyanins.

Sign in / Sign up

Export Citation Format

Share Document