scholarly journals Characterization of Bioactive Compounds, Antioxidant Properties and Antimicrobial Activity of Red And White Cabbage Leaves Extracts

2018 ◽  
Vol 2 (1) ◽  
Keyword(s):  
Linoleic Acid ◽  
Phenolic Compounds ◽  
Bioactive Compounds ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Total Polyphenols ◽  
Red Cabbage ◽  
White Cabbage ◽  
Β Carotene

Cabbage is known as a rich source of bioactive compounds including carotenoids and phenolic compounds which may have antibacterial and antioxidant properties. This investigation was undertaken to estimate the effect of using different organic solvents on the total polyphenols content, antibacterial and antioxidant capacities of red and white cabbage. Phenolic compounds analysis was performed by Reversed-Phase High-Performance Liquid Chromatography (RP-HPLC) and antioxidant activities of cabbage were evaluated using DPPH radical scavenging and β-carotene-linoleic acid bleaching.Methanol has the highest extraction yields of 23.83 and 22.05 %. Alcoholic extracts from red cabbage exhibit the highest content of total polyphenols (205.66-190.77 mg GAE/ 100g DW) and flavonoids (137.26-123.6 mg CE/100g DW) meanwhile; white cabbage had the highest content of β-carotene and chlorophyll. Red cabbage exhibited the highest DPPH scavenging value (IC50= 257, 80 μg/ml) and the highest β-carotene-linoleic acid bleaching (73.85%). Significant correlations were found between antioxidant activity of extracts from cabbage samples and the contents of polyphenols and flavonoids. The studied extracts didn’t show an antibacterial activity against tested germs.

In Vitro Antioxidant Activity Metaplexis Japonica Makino Extract and Derivatives

2014 ◽  
Vol 955-959 ◽  
pp. 387-389 ◽  
Author(s):  
Bao Qing Wang
Keyword(s):  
Antioxidant Activity ◽  
Linoleic Acid ◽  
Ethyl Acetate ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Acid Test ◽  
Acetone Extracts ◽  
Β Carotene ◽  
Ethyl Acetate Extracts

Antioxidant activities of acetone and ethyl acetate extracts from Metaplexis japonica Makino, one of famous medicine plants in the eastnorth region of China, named luomo in Chinese, were examined by a DPPH (1,1-Diphenyl-2-picrylhydrazyl) radical-scavenging assay and a β-carotene-linoleic acid test. In DPPH, the antioxidant activity of the acetone extracts, ethyl acetate extracts and derivative were IC50 were 313.21, 266.92 and 118.78μg/mL, respectively. In the β-carotene-linoleic acid test, IC50 were 285.09, 351.57 and 123.89μg/mL. It was concluded that Metaplexis japonica Makino and its derivatives might be a potential natural source of antioxidants .

scholarly journals Nutritional, phytochemical and antioxidant properties of 24 mung bean (Vigna radiate L.) genotypes

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Fuhao Wang ◽  
Lu Huang ◽  
Xingxing Yuan ◽  
Xiaoyan Zhang ◽  
Luping Guo ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Mung Bean ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Principal Component ◽  
Syringic Acid ◽  
Proximate Analysis ◽  
Water Soluble ◽  
Vigna Radiate

Abstract This study aimed to investigate the proximate and phytochemicals present in seeds of 24 mung bean (Vigna radiate L.) genotypes from four provinces of China for estimating their nutritional and antioxidant properties. Proximate analysis of mung bean genotypes revealed that starch, protein, fat, ash and water-soluble polysaccharide ranged from 39.54–60.66, 17.36–24.89, 4.24–12.18, 2.78–3.53 and 1.99–2.96 g/100 g respectively. The five principal fatty acids detected in mung beans were stearic acid, palmitic acid, linoleic acid, oleic acid, and linolenic acid. The contents of insoluble-bound phenolic compounds, soluble phenolic compounds, and flavonoids ranged from 0.78 to 1.5 mg GAE g− 1, 1.78 to 4.10 mg GAE g− 1, and 1.25 to 3.52 mg RE g− 1, respectively. The black seed coat mung bean genotype M13 (Suheilv 1) exhibited highest flavonoid and phenolic contents which showed strong antioxidant activity. Two flavonoids (vitexin and isovitexin) and four phenolic acids (caffeic, syringic acid, p-coumaric, and ferulic acids) were identified by HPLC. Vitexin and isovitexin were the major phenolic compounds in all mung bean genotypes. The content of soluble phenolic compounds had positive correlation with DPPH (r2 = 0.713) and ABTS (r2 = 0.665) radical scavenging activities. Principal component analysis indicated that the first two principal components could reflect most details on mung bean with a cumulative contribution rate of 66.1%. Twenty-four mung bean genotypes were classified into four groups based on their phenolic compounds contents and antioxidant activities. The present study highlights the importance of these mung bean genotypes as a source of nature antioxidant ingredient for the development of functional foods or a source of health promoting food. Graphical Abstract

scholarly journals Metabolic Profiling of Nine Mentha Species and Prediction of Their Antioxidant Properties Using Chemometrics

Molecules ◽  
2019 ◽  
Vol 24 (2) ◽  
pp. 258 ◽  
Author(s):  
Yun Park ◽  
Seung-A Baek ◽  
Yongsoo Choi ◽  
Jae Kim ◽  
Sang Park
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Lipophilic Compounds ◽  
Antioxidant Capacities ◽  
Metabolite Profiles ◽  
Pls Analysis ◽  
Reducing Power Assay ◽  
Β Carotene

Mentha species are well recognized for their medicinal and aromatic properties. The comprehensive metabolite profiles of nine Mentha species have been determined. The extracts of these Mentha species were also screened for antioxidant and free radical scavenging activities. Forty-seven hydrophilic and seventeen lipophilic compounds were identified and quantified from the selected Mentha species. Also, eleven phenolic compounds, riboflavin and eight carotenoids were present, and their composition and content varied among the various Mentha species. The different Mentha species exhibited a range of antioxidant potencies. Horse mint especially exhibited the strongest antioxidant capacities (1,1-diphenyl-2-picryl-hydrazyl (DPPH), hydrogen peroxide, and reducing power assay) among the nine Mentha species. A difference between different samples from the same species was not observed by multivariate analysis. A high correlation between metabolites involved in closely linked biosynthetic pathways has been indicated. The projection to latent structure method, using the partial least squares (PLS) method, was applied to predict antioxidant capacities based on the metabolite profiles of Mentha leaves. According to the PLS analysis, several carotenoid contents, such as E-β-carotene, 9Z-β-carotene, 13Z-β-carotene and lutein, as well as phenolic compounds, showed a positive relationship in reducing the power of Mentha extracts. Horse mint is a good candidate because of its high antioxidant efficacy among the nine Mentha species included in the study.

scholarly journals Profile of the Phenolic Compounds ofRosa rugosaPetals

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Andrzej Cendrowski ◽  
Iwona Ścibisz ◽  
Marta Mitek ◽  
Marek Kieliszek ◽  
Joanna Kolniak-Ostek
Keyword(s):  
Phenolic Compounds ◽  
Bioactive Compounds ◽  
Antioxidant Properties ◽  
Valuable Resource ◽  
Rosa Rugosa ◽  
Total Polyphenols ◽  
Valuable Source ◽  
Esi Ms ◽  
Polyphenolic Composition ◽  
Main Fraction

Rosa rugosapetals are a rich source of phenolic compounds, which determined their antioxidant properties. The aim of this study was to determine the polyphenolic composition of not processed petals ofRosa rugosacollected from the commodity crops and to determine the variability of the contained therein polyphenols between harvesting seasons. Twenty polyphenols were identified by UPLC-ESI-MS. The main fraction of polyphenols was ellagitannins, which are 69 to 74% of the total polyphenols of the petals. In the petals ofRosa rugosa, four anthocyanins have been identified: cyanidin 3,5-di-O-glucoside, peonidin 3-O-sophoroside, peonidin 3,5-di-O-glucoside, and peonidin 3-O-glucoside, of which the predominant peonidin 3,5-di-O-glucoside represented approx. 85% of all the determined anthocyanin compounds. It was found that the petals ofRosa rugosaare a valuable source of bioactive compounds and can be considered as a healthy valuable resource.

scholarly journals Total Phenolic Contents and Antioxidant Properties of Algerian Alkanna tinctoria aerial part Extracts

2020 ◽  
Vol 10 (5) ◽  
pp. 39-44
Author(s):  
Thoraya Guemmaz ◽  
Lekhmici Arrar ◽  
Abderrahmene Baghiani
Keyword(s):  
Antioxidant Activity ◽  
Aerial Part ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Iron Chelation ◽  
Total Phenolic ◽  
Total Polyphenols ◽  
Alkanna Tinctoria ◽  
Dried Extract ◽  
Β Carotene

Objective: Evaluation of the polyphenols, flavonoids and tannins contents of different aqueous extracts of the aerial part of Alkanna tinctoria and their antioxidant activities.  Methodology: Three extracts;  decoction, macerate and infusion of the aerial part of Alkanna tinctoria were prepared. The content of total polyphenols, flavonoids and tannins of the extracts was carried out and antioxidant activity was assessed using DPPH (2,2’-diphenyl-1-picryl hydrazyl), β-carotene bleaching and iron chelation tests. Results : The results showed that Infusion (Inf) was the richest in total polyphenols (189.66 ± 30.77 mg EGA / g of dried extract) and flavonoids (26.80 ± 8.37 mg EQ / g of dried extract). While the content of tannins is almost the same for Dec and Inf (40.27 ± 15.00, 40.25 ± 18.27 mg ETA / g of dried extract). Moreover, the two extracts Inf (IC50 of 0.09 ± 0.0015 mg / ml) and Dec (IC50 of 0.17 ± 0. 031 mg / ml) showed a very strong anti-radical activity towards the radical DPPH. In the β-carotene bleaching test, Inf and Dec showed a significant inhibitory activity of peroxidation with values ​​of 100% and 99.8% and are more effective compared to BHT (98.15%). Dec and Mac showed strong chelating activity with IC50s of 0.003 ± 0.0002 mg / ml and 0.005 ± 0.00008 mg / ml respectively. These chelating activities remain higher than EDTA. Conclusion: It may be concluded that the extracts of the aerial part of Alkanna tinctoria exhibit significant both content of polyphenols and antioxidant activity. Keywords: Alkanna tinctoria, polyphenols, flavonoids, antioxidant activity.

Antioxidant Activity of Ethanolic Fractions of Polish Propolis

2012 ◽  
Vol 67 (11-12) ◽  
pp. 545-550 ◽  
Author(s):  
Anna M. Kurek-Górecka ◽  
Andrzej Sobczak ◽  
Anna Rzepecka-Stojko ◽  
Michał T. Górecki ◽  
Maria Wardas ◽  
...  
Keyword(s):  
Phenolic Acids ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Natural Antioxidants ◽  
Free Radical Scavenging ◽  
Biologically Active ◽  
Butylated Hydroxytoluene ◽  
Different Origins ◽  
Β Carotene

There is a great variation in the chemical composition of propolis of different origins. Likewise, the method of its extraction has signifi cant impact on the content of biologically active compounds. Here we compared methods of propolis extraction for optimal antioxidant activities which were measured by means of β-carotene discolouration, 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging, and 2,2’-azinobis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS•+) radical cation decolouration assays. In the extracts, the contents of polyphenols and fl avonoids were measured, and phenolic acids were identifi ed and quantifi ed by HPLC. A three-step extraction allowed obtaining large amounts of phenolic acids from propolis. The propolis fractions obtained had antioxidant properties comparable to those of α-tocopherol and butylated hydroxytoluene. Therefore, they may be used as effective natural antioxidants.

Antioxidant Activity of Schisandra Chinensis Extract and Derivatives

2012 ◽  
Vol 610-613 ◽  
pp. 3549-3551
Author(s):  
Jing Chun Wang ◽  
Bao Qing Wang
Keyword(s):  
Antioxidant Activity ◽  
Linoleic Acid ◽  
Methyl Ethyl Ketone ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Schisandra Chinensis ◽  
Methyl Ethyl ◽  
Acid Test ◽  
Acetone Extracts ◽  
Β Carotene

Antioxidant activities of acetone and methyl ethyl ketone extracts from leaves of Schisandra chinensis, one of traditional Chinese medicine consumed in the eastnorth region of China, were examined by a DPPH (1,1-Diphenyl-2-picrylhydrazyl) radical-scavenging assay and a β-carotene-linoleic acid test. In DPPH, the antioxidant activity of the acetone extracts, methyl ethyl ketone extracts and derivative were superior to that of control with IC50 were 256.54, 342.28 and 124.32μg/mL, respectively. In the β-carotene-linoleic acid test, IC50 were 278.29, 384.12 and 145.25μg/mL. It was concluded that Schisandra chinensis and its derivatives might be a potential natural source of antioxidants.

scholarly journals Antioxidant Activities of Dialium indum L. Fruit and Gas Chromatography-Mass Spectrometry (GC-MS) of the Active Fractions

Antioxidants ◽  
2018 ◽  
Vol 7 (11) ◽  
pp. 154 ◽  
Author(s):  
Muhamad Osman ◽  
Norazian Mohd Hassan ◽  
Alfi Khatib ◽  
Siti Tolos
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Linoleic Acid ◽  
Antioxidant Activities ◽  
Radical Scavenging Activity ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Gas Chromatography Mass Spectrometry ◽  
Methanol Fraction ◽  
Chromatography Mass Spectrometry

The fruit of Dialium indum L. (Fabaceae) is one of the edible wild fruits native to Southeast Asia. The mesocarp is consumed as sweets while the exocarp and seed are regarded as waste. This study aimed to evaluate the antioxidant activities of the fruit by using four assays, which measure its capabilities in reducing phosphomolybdic-phosphotungstic acid reagents, neocuproine, 2,2-diphenyl-picrylhydrazyl (DPPH), and inhibiting linoleic acid peroxidation. The active fractions were then analyzed by gas chromatography-mass spectrometry (GC-MS). The results showed that the seed methanol fraction (SMF) exhibited the strongest antioxidant activity with significantly higher (p < 0.05) gallic acid equivalence (GAE), total antioxidant capacity (TAC), and DPPH radical scavenging activity (IC50 31.71; 0.88 µg/mL) than the other fractions. The exocarp dichloromethane fraction (EDF) was the discriminating fraction by having remarkable linoleic acid peroxidation inhibition (IC50 121.43; 2.97 µg/mL). A total of thirty-eight metabolites were detected in derivatized EDF and SMF with distinctive classes of phenolics and amino acids, respectively. Bioautography-guided fractionation of EDF afforded five antioxidant-enriched subfractions with four other detected phenolics. The results revealed the antioxidant properties of D. indum fruit, which has potential benefits in pharmaceutical, nutraceutical, and cosmeceutical applications.

scholarly journals Antioxidant Activities of Vaccinium vitis-idaea L. Leaves within Cultivars and Their Phenolic Compounds

Molecules ◽  
2019 ◽  
Vol 24 (5) ◽  
pp. 844 ◽  
Author(s):  
Lina Raudone ◽  
Gabriele Vilkickyte ◽  
Lina Pitkauskaite ◽  
Raimondas Raudonis ◽  
Rimanta Vainoriene ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Positive Influence ◽  
Phenolic Profile ◽  
Structure Activity ◽  
The Subject ◽  
Potential Use

Lingonberry leaves are the subject of numerous studies because of antioxidant properties, positive influence on the health and potential use in the prevention and treatment of chronic diseases. In this work, the radical scavenging, reducing, chelating activities, and phenolic composition of ten lingonberry leaves cultivars, one subspecies, and one variety were investigated. Furthermore, the antioxidant activity of individual phenolic compounds, that can be found in lingonberry leaves, were analyzed, and structure-activity relationship was determined. Wide diversity for phenolic profile and antioxidant properties of lingonberry leaves has been observed in the present material. Cultivars ‘Kostromskaja rozovaja’, ‘Rubin’, and Vaccinium vitis-idaea var. leucocarpum surpassed all others tested cultivars and lower taxa by contents of phenolic compounds and antioxidant activity. Leaves of lingonberry cultivars and lower taxa are rich in arbutin, flavonol glycosides, proanthocyanidins, and the latter were considered to be the major contributor to antioxidant properties of lingonberry leaves.

scholarly journals Enhancement of the Neuroprotective Effect of Fermented Spirulina maxima Associated with Antioxidant Activities by Ultrasonic Extraction

2018 ◽  
Vol 8 (12) ◽  
pp. 2469 ◽  
Author(s):  
Woon Choi ◽  
Do Kang ◽  
Soo-Jin Heo ◽  
Hyeon Lee
Keyword(s):  
Antioxidant Activities ◽  
Neuroprotective Effect ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Ultrasonic Extraction ◽  
Biologically Active ◽  
Water Extraction ◽  
Neuroprotective Activity ◽  
Spirulina Maxima ◽  
Β Carotene

This study is the first demonstration of the neuroprotective activity of the marine alga, Spirulina maxima, fermented by Lactobacillus plantarum HY-08, which was freshly isolated from fermented vegetables. The combined process of the fermentation with ultrasonic extraction at 40 kHz for 4 hr greatly increased the amounts of β-carotene in the extract up to 1.62 mg/g, along with a high extraction yield of 18.26%, compared to 1.03 mg/g and 12.8% from ultrasonic extraction itself, and even much higher than 0.81 mg/g and 10.6% from conventional water extraction. It was also proved that the neuroprotective activities of the extract were enhanced possibly by higher contents of β-carotene in the extract, compared to those from water extraction or ultrasonic extraction itself. This extract was found to have strong antioxidant properties, with 49.01% 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activity, which resulted in 90.30% neuroprotective activity. Specifically, the fermented extract markedly enhanced the brain-derived neurotrophic factor (BDNF)/p-CREB signaling pathways, which can effectively prevent memory impairment in mice caused by oxidative stress. β-Carotene also increased the expression of p-CREB and BDNF, and a mechanism of their upregulation by β-carotene is first proposed in this study. It can be concluded that the strong neuroprotective effect of the extract was markedly influenced by the antioxidant activities, due to the synergistic effects of high amounts of β-carotene and other biologically active substances in the extract that can be obtained by lactic acid fermentation, combined with ultrasonic processing.

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