scholarly journals Determination of antioxidant, radical scavenging activity and total phenolic compounds of Artocarpus heterophyllus (Jackfuit) seeds extracts

2015 ◽  
Vol 9 (40) ◽  
pp. 1013-1020
Author(s):  
Moura Burci L iacute gia ◽  
Bezerra da Silva Cristiane ◽  
de Oliveira Maislian ◽  
Dalarmi Luciane ◽  
Maria Warumby Zanin Sandra ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Scavenging Activity ◽  
Total Phenolic Compounds ◽  
Artocarpus Heterophyllus

scholarly journals Effect of Artificial Shading and Temperature on Radical Scavenging Activity and Polyphenolic Composition in Sweetpotato (Ipomoea batatas L.) Leaves

2003 ◽  
Vol 128 (2) ◽  
pp. 182-187 ◽  
Author(s):  
Md. Shahidul Islam ◽  
Makoto Yoshimoto ◽  
Koji Ishiguro ◽  
Shigenori Okuno ◽  
Osamu Yamakawa
Keyword(s):  
Phenolic Compounds ◽  
Ipomoea Batatas ◽  
Phenolic Content ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Cultivar Differences ◽  
Total Phenolic ◽  
Scavenging Activity ◽  
Caffeoylquinic Acid ◽  
Phenolic Components

The phenolic content and the radical scavenging activity were compared in leaves of sweetpotato (Ipomoea batatas L.) cultivars Shimon-1, Kyushu-119 and Elegant Summer grown under different temperature and shading conditions. Compared to cultivar differences, there was less effect of temperature and shading on the total phenolic content in sweetpotato leaves, however certain polyphenolic components differed widely among the treatments. The positive correlation between the radical scavenging activity and the level of total phenolics (r = 0.62) suggests that phenolic compounds are important antioxidant components of sweetpotato leaves. All the reverse-phase high-performance liquid chromatography (RP-HPLC) profiles of the cultivars tested showed peaks at the same retention times but peak areas of individual phenolic compounds differed with respective temperature and shading treatments. The phenolic compounds identified in the sweetpotato leaf were caffeic acid, chlorogenic acid, 4,5-di-O-caffeoylquinic acid, 3,5-di-O-caffeoylquinic acid, 3,4-di-O-caffeoylquinic acid, and 3,4,5-tri-O-caffeoylquinic acid. Most of the phenolic compounds were highest in leaves from plants grown at 20 °C without shading except 4,5-di-O-caffeoylquinic acid. The results indicate that growing leaves under moderately high temperatures and in full sun enhances the accumulation of phenolic components. These phenolic components have possible value in enhancing human health.

Determination of the total phenolic, flavonoid and proline contents in Burkina Fasan honey, as well as their radical scavenging activity

2005 ◽  
Vol 91 (3) ◽  
pp. 571-577 ◽  
Author(s):  
Aline Meda ◽  
Charles Euloge Lamien ◽  
Marco Romito ◽  
Jeanne Millogo ◽  
Odile Germaine Nacoulma
Keyword(s):  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Scavenging Activity

scholarly journals Free Radical Scavenging Activity, Reducing Power and Anti-Hemolytic Capacity of Algerian Drimia maritima Baker Flower Extracts

2020 ◽  
Vol 10 (4) ◽  
pp. 70-78
Author(s):  
Abir Rezzagui ◽  
Abderrahmane Senator ◽  
Soumia Benbrinis ◽  
Hamama Bouriche
Keyword(s):  
Lipid Peroxidation ◽  
Free Radical ◽  
Phenolic Compounds ◽  
Superoxide Anion ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Free Radical Scavenging ◽  
Scavenging Activity

This study was undertaken to evaluate the antioxidant and anti-hemolytic properties of Algerian Drimia maritima Baker flower extracts. Determination of phenolic content was carried out to estimate the chemical composition of D. maritima extracts. Antioxidant properties were investigated in all extracts using free radical scavenging activity (against DPPH, ABTS, hydroxyl radical, and superoxide anion), reducing power, inhibition of lipid peroxidation, and anti-hemolytic capacity. Phenolic determination revealed that D. maritima flowers contain phenolic compounds, flavonoids, and tannins. Ethyl acetate extract showed the highest reducing power and scavenging activity using DPPH and ABTS assays. However, aqueous extract was the most effective against hydroxyl radical, superoxide anion, and lipid peroxidation. The half-time of hemolysis indicates that chloroform extract exhibited the best anti-hemolytic capacity in the AAPH induced hemolysis model. The results of this study suggest that D. maritima could be used as a possible source of antioxidant phenolic compounds and that further determination of these compounds may provide more information on their medicinal value.  Keywords: Drimia maritima, phenolic compounds, scavenging activity, reducing power, anti-hemolytic.

scholarly journals Hypericum perforatum Mikrokapsüllerinin Ayran (İçilebilir Yoğurt) Üretiminde Kullanımı

2021 ◽  
Vol 9 (11) ◽  
pp. 2013-2021
Author(s):  
Fadime Seyrekoğlu ◽  
Hasan Temiz
Keyword(s):  
Phenolic Compounds ◽  
Sensory Analysis ◽  
Phenolic Content ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Scavenging Activity ◽  
Dpph Radical ◽  
Dpph Radical Scavenging Activity ◽  
Dpph Radical Scavenging

H. perforatum, which is widely used in traditional medicine due to its bioactive compounds was extracted with ethanol-water (3:7). The extract was encapsulated with maltodextrin and gum arabic in a spray dryer in order to protect the phenolic compounds in its structure. Different amounts of microcapsules were added to our traditional drink, i.e. ayran (drinking yoghurt). The total phenolic content and DPPH radical scavenging activity of the microcapsules, extract of HP, and ayran samples were determined. The amount of total phenolic compounds in the microcapsule provided a superior effect than the extract. The ayran samples were supplemented with 2%, 3%, 4%, 5% and 6% of H. perforatum (HP) microcapsules and it is observed that total phenolic content (TPC) and DPPH radical scavenging activity indicated an increase with concentration. TPC and DPPH activity were determined as 256.94 mg GAE / 100mL and 78.05% for 6% of HP microcapsules supplemented samples. As a result of the sensory analysis, ayran samples which supplemented with 4% of HS microcapsule gained the highest scores by the panellists and received more appreciation than the control group. According to sensory analysis, HP4 (ayran produced with 4% HP added microcapsule) sample was determined as the best sample, while the HP6 (Ayran produced with 6% HP added microcapsule) sample had the highest scores in terms of DPPH scavenging activity and TPC results. The overall results of this study revealed that 4% HP supplemented ayran can be produced with its increased health benefits and desirable properties. In this study, the use of H. perforatum microcapsules in ayran, its effect on antioxidant and phenolic components, the usage rates and acceptability of microcapsules were investigated.

scholarly journals Comparison of ABTS, DPPH, Phosphomolybdenum Assays for Estimating Antioxidant Activity and Phenolic Compounds in Five Different Plant Extracts

2018 ◽  
Vol 75 (2) ◽  
pp. 110
Author(s):  
Arabela UNTEA ◽  
Alexandra LUPU ◽  
Mihaela SARACILA ◽  
Tatiana PANAITE
Keyword(s):  
Antioxidant Activity ◽  
Free Radical ◽  
Phenolic Compounds ◽  
Phenolic Content ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Scavenging Activity ◽  
Total Phenols ◽  
Walnut Leaves

Many plants and their constituents (carotenoids, flavonoids and other phenolic compounds), action to inhibit the free radical by the use of antioxidant activity, helping to a better efficiency of nutrients utilization. The purpose of this study was to investigate the antioxidant activity and phenolic content of five different plants, known for their antioxidant potential. Total phenols were determined by FolinCiocalteumethod, with few modifications. The antioxidant capacity was evaluated by DPPH, ABTS radical-scavenging activity and phosphomolybdenum method. The results showed that the highest antioxidant activity was obtained for walnut leaves in terms of ABTS evaluation and for bilberry leaves by DPPH and phosphomolybdenum methods. In the present study, peppermint, walnut and bilberry leaves proved to have an important antioxidant activity and also a total phenolic content.

Extrusion and solid-state fermentation with Aspergillus oryzae on the phenolic compounds and radical scavenging activity of pecan nut (Carya illinoinensis) shell

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Juliana Villasante ◽  
Johanan Espinosa-Ramírez ◽  
Esther Pérez-Carrillo ◽  
Erick Heredia-Olea ◽  
MariaPilar Almajano
Keyword(s):  
Solid State ◽  
Phenolic Compounds ◽  
Aspergillus Oryzae ◽  
Solid State Fermentation ◽  
Phenolic Content ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Scavenging Activity ◽  
Content Type

PurposeSolid-state fermentation (SSF) has been highlighted as an alternative to obtain valuable compounds using agro-industrial wastes as a substrate. The present study evaluated the impact of extrusion combined with SSF on the production of phenolic compounds and their antioxidant activity using pecan nut shell (PWS) as a substrate.Design/methodology/approachPWS and extruded pecan nut shell (PWSE) were fermented for 120 h at 30°C using Aspergillus oryzae (A. oryzae). Samples were withdrawn from incubator at 6 h, 12 h and then every 12 h until 120 h fermentation. PWS and PWSE samples were extracted. The total phenolic content (TPC) and radical scavenging activity (RSA) extracts were characterized from the resulting extracts.FindingsThe use of PWSE yielded higher A. oryzae biomass and at a higher rate after 120 h of fermentation (PWS 75.74% vs PWSE 87.50%). In general, the TPC and the RSA increased with fermentation time. However, the PWSE yielded significantly higher (p < 0.05) TPC and RSA values after SSF in comparison to the nonextruded PWS. Condensed tannins showed different trends depending on the fermented substrate. Overall, results showed that the extrusion pretreatment joint with the SSF represents a good alternative to raise the phenolic content and antiradical activity of lignocellulosic materials such as PWSs.Originality/valueThis study offers valuable information that may be used by the pecan walnut industry to valorize the shell coproduct as a substrate to produce functional ingredients or fungal enzymes.

scholarly journals Evaluation of byproducts from the wine-making industry by identification of bioactive compounds

2019 ◽  
Vol 12 ◽  
pp. 04007
Author(s):  
C.E. Luchian ◽  
E.C. Scutaraşu ◽  
L.C. Colibaba ◽  
V.V. Cotea ◽  
L. Vlase ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Scavenging Activity ◽  
Wine Production ◽  
Antioxidant Power ◽  
Positive Correlation

Byproducts obtained after wine production constitute an important source for the extraction of antioxidant compounds. Phenolic compounds showed a wide spectrum of biological actions for the human health, often associated with neuroprotective, cardioprotective, antimicrobial and other health-related effects. The aim of the present study was to determine the phenolic compounds content and antioxidant activity of grape marc from selected grapes from Iaşi vineyard. The total phenolic content of the extracts was measured using the Folin-Ciocâlteu method, with some modifications. The DPPH (2,2-diphenyl-1-picrylhydrazyl) assay was used to evaluate radical scavenging activity, by bleaching of purple methanolic solution of the stable radical. All extracts were able to reduce DPPH radical with different degrees of scavenging activity. The highest radical scavenging activity was determined for the extract obtained from Merlot and Fetească Neagră (98.142 μg/mL, and 115.78 μg/mL respectively), with positive correlation between scavenging activity on DPPH and total phenolic content. The total phenolic content varied among the analysed extracts, with a higher concentration in extracts obtained from Merlot, Fetească Neagră and Traminer rosé (2.42 GAE/mL, 1.45 GAE/mL and 1.24 GAE/mL respectively), followed by Sauvignon Blanc and Muscat Ottonel extracts with comparable amounts. The FRAP (ferric reducing antioxidant power) method relies on the color change of a complex with Fe+3 ion of the 2,4,6-tri(2-pyridyl) – 1,3,5-triazine (TPTZ) radical due to the reduction of the ferric ion to the ferrous iron (Fe+2) in this complex. The highest radical scavenging activity was determined in the extract obtained from Merlot and Fetească Neagră (1164.22 μM Trolox/100 mL and 782.09 μM Trolox/100 mL respectively), a positive correlation between scavenging activity determined by FRAP method and total phenolic content being observed.Statistical analysis showed a close relationship between content of phenolic compounds and antioxidant capacity, the marc of Merlot and Fetească Neagră had the highest contents of anthocyanins. The results suggested that grape pomace may be exploited as antioxindant source.

scholarly journals Determination of Antioxidant Properties of 26 Chilean Honeys and a Mathematical Association Study with their Volatile Profile

2012 ◽  
Vol 7 (7) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Elizabeth Sánchez ◽  
Marisa Piovano ◽  
Erika Valdés ◽  
Manuel E. Young ◽  
Cristian A. Acevedo ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Radical Scavenging Activity ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Persea Americana ◽  
Total Phenolic ◽  
Volatile Profile ◽  
Total Phenolic Compounds ◽  
Latent Structures

Radical scavenging activity (RSA), antioxidant content (TEAC), total phenolic compounds content (TPCC) and volatile profile (VOCs) were measured in 26 honeys obtained from the Valparaíso Region (Chile). Persea americana honey was the most interesting sample according to these evaluated parameters. A Projection to Latent Structures (PLS) based algorithm was used to model the possible relationship between antioxidant activity, total phenolic compounds content and volatile profile. Concerning the volatile profile, only nine volatile compounds, of a total of fifty, showed dependence on antioxidant activity and total phenolic compounds content.

scholarly journals Determination of γ-oryzanol, Phenolic total content, and (2,2-difenil-1-picrylhydrazyl) Radical Scavenging Activity in Different Varieties of Rice (Oryza sativa) in Yogyakarta, Indonesia

2018 ◽  
Vol 23 (2) ◽  
pp. 113
Author(s):  
Erna Prawita Setyowati ◽  
Andayana Puspitasari Gani
Keyword(s):  
Oryza Sativa ◽  
Phenolic Compounds ◽  
Phenolic Content ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Total Content ◽  
Total Phenolic ◽  
Antioxidants Activity ◽  
Natural Beauty

In Indonesia, beras (Oryza sativa) has become the main ingredient in natural beauty products such as masks, scrubs, and cold powder. γ-oryzanol and phenolic compounds are the major components in beras that have many benefits, one of which as antioxidants. This study aims to determine the content of γ-oryzanol and total phenolic compounds in different beras cultivars in the area of Yogyakarta. The leveling was done by a TLC-densitometry method and Folin Ciocalteu. The results showed that the largest γ-oryzanol content found in red beras was 0.0843% by weight of the sample. The highest total phenolic content was found in red beras as much as 1.92% by weight of the sample. The antioxidants activity IC50 Red Beras is 0.591.

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