scholarly journals Proximate Composition, Phenolic Contents and in vitro Antioxidant Properties of Pimpinella stewartii (A Wild Medicinal Food)

2015 ◽  
Vol 3 (5) ◽  
pp. 330-336
Author(s):  
Arshad Mehmood Abbasi ◽  
Xinbo Guo
Keyword(s):  
Proximate Composition ◽  
Antioxidant Properties ◽  
Phenolic Contents ◽  
Medicinal Food

scholarly journals Comparative Studies of Phytochemicals Analysis and in vitro Antioxidant Properties of Various Solvent Extracts of Sphaeranthus indicus Collected from three Different Climatic Zones of Central India

2021 ◽  
Vol 33 (9) ◽  
pp. 2237-2243
Author(s):  
Pooja N. Akhand ◽  
Veena Sharma ◽  
Anupam K. Pathak
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Properties ◽  
Reducing Power ◽  
Central India ◽  
Total Phenolic ◽  
Climatic Zones ◽  
Phenolic Contents ◽  
Total Antioxidant ◽  
Sphaeranthus Indicus

In present study, the total phenolic, flavonoid, tannin contents and the antioxidant activity of various solvent extracts of Sphaeranthus indicus collected from three different regions of central India were assessed. Plants extracts were prepared using Soxhlation method, while the total phenols, flavonoids and tannins were measured by the spectrophotometric method. DPPH, metal chelating, nitric oxide, superoxide oxide scavenging activity and FRAP, reducing power, total antioxidant assays were also evaluated. The highest phenolic contents 268.22 GAE equivalent, flavonoids 441.33 QE equivalents and tannin content was 120.32 tannic acid equivalents (mg/g) obtained from ethanolic extracts of sample SIEE-1 compared to other two plants extract. Similarly, the highest flavonoid contents was observed in SIAE-1 aqueous extract and lowest in SIAE-2 and SIAE-3. Extract of SIEE-1 possessed maximum antioxidant potentiality and SIAE-2 shown the least antioxidant activity in all assays. It could be concluded that different agroclimatic conditions have effects on the total phenolics, flavonoids, tannin contents and antioxidant potentiality of S. indicus plant.

scholarly journals Phenolic Extract fromMoringa oleiferaLeaves Inhibits Key Enzymes Linked to Erectile Dysfunction and Oxidative Stress in Rats’ Penile Tissues

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Ganiyu Oboh ◽  
Adedayo O. Ademiluyi ◽  
Ayokunle O. Ademosun ◽  
Tosin A. Olasehinde ◽  
Sunday I. Oyeleye ◽  
...  
Keyword(s):  
Erectile Dysfunction ◽  
High Performance ◽  
Antioxidant Properties ◽  
Tissue Homogenate ◽  
Phenolic Contents ◽  
Phenolic Constituents ◽  
Array Detection ◽  
Phenolic Extract ◽  
Dose Dependent

This study was designed to determine the antioxidant properties and inhibitory effects of extract fromMoringa oleiferaleaves on angiotensin-I-converting enzyme (ACE) and arginase activitiesin vitro. The extract was prepared and phenolic (total phenols and flavonoid) contents, radical (nitric oxide (NO), hydroxyl (OH)) scavenging abilities, and Fe2+-chelating ability were assessed. Characterization of the phenolic constituents was done via high performance liquid chromatography-diode array detection (HPLC-DAD) analysis. Furthermore, the effects of the extract on Fe2+-induced MDA production in rats’ penile tissue homogenate as well as its action on ACE and arginase activities were also determined. The extract scavengedNO∗,OH∗, chelated Fe2+, and inhibited MDA production in a dose-dependent pattern with IC50values of 1.36, 0.52, and 0.38 mg/mL and 194.23 µg/mL, respectively. Gallic acid, chlorogenic acid, quercetin, and kaempferol were the most abundant phenolic compounds identified in the leaf extract. The extract also inhibited ACE and arginase activities in a dose-dependent pattern and their IC50values were 303.03 and 159.59 µg/mL, respectively. The phenolic contents, inhibition of ACE, arginase, and Fe2+-induced MDA production, and radical (OH∗,NO∗) scavenging and Fe2+-chelating abilities could be some of the possible mechanisms by whichM. oleiferaleaves could be used in the treatment and/or management of erectile dysfunction.

scholarly journals Phenolic Compounds of Soybean Seeds from Two European Countries and Their Antioxidant Properties

Molecules ◽  
2020 ◽  
Vol 25 (9) ◽  
pp. 2075
Author(s):  
Angelika Król-Grzymała ◽  
Ryszard Amarowicz
Keyword(s):  
Phenolic Compounds ◽  
Defense Mechanism ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Cold Climate ◽  
Total Phenolic ◽  
Soybean Seeds ◽  
Phenolic Contents ◽  
Soybean Cultivars

There is only a small acreage of planted soybeans in northern Europe, as the global production of this crop is mainly dictated by the warmer temperatures needed for bountiful yields. The defense response of soybean plants to a cold climate entails the secretion of specific compounds which help mitigate oxidative stress, i.e., antioxidants, including phenolic compounds. The objective of this study was to examine differences in the concentrations of phenolic compounds, their antioxidant properties, and the concentration of key isoflavones (namely genistein, daidzein, malonyl daidzein, malonyl genistein, and daidzin) in the seeds of six soybean cultivars from two different regions of Europe, namely Poland and France. The total phenolic contents, isoflavone levels, and in vitro antioxidant capacities of soybean seeds from most of the investigated cultivars of northeast Europe were found to be greater than those from southwest Europe. The phenolic compounds of seed extracts are primarily responsible for the free-radical scavenging of soybeans. Factors regulating the production of phenolic compounds in the seeds have not been thoroughly elucidated. Hence, the results presented in this paper can be useful in the selection of soybean cultivars with higher levels of seed phenolics, because of their beneficial impact on human health and on the soybean’s defense mechanism against plant stresses.

Phenolic Antioxidants of Auricularia Species and Their Inhibitory Effects on α-Amylase, α-Glucosidase and Acetylcholine Esterase Activities

2018 ◽  
Vol 18 (2) ◽  
pp. 132-140
Author(s):  
Si Feng-Ling ◽  
Duan Shu-li ◽  
Wang Xiao ◽  
Wang Lin-Ling
Keyword(s):  
Chlorogenic Acid ◽  
Gallic Acid ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Acetylcholine Esterase ◽  
Total Phenolic ◽  
Phenolic Antioxidants ◽  
Phenolic Contents ◽  
Pharmaceutical Industries

Auricularia is the genus of an edible jelly fungus known for its high nutritional value and good taste. In this study, the phenolic contents and in vitro bioactivities of four Auricularia species were investigated. The total phenolic contents ranged from 3.5 to 20.1 μmol gallic acid equivalents/g. Gallic acid, chlorogenic acid and rutin were the predominant phenolic acids present in the soluble fractions of the four species of Auricularia. Particularly, we identified gallic acid and rutin in A. cornea, gallic acid in A. heimuer and selenium-rich A. cornea var. Li, and chlorogenic acid in A. cornea var. Li. In addition, selenium-rich A. cornea var. Li. showed antioxidant properties including inhibitory activity against ABTS, free radical scavenging capacity and lipid peroxidation resistance. The selenium-rich A. cornea var. Li showed superior inhibitory activities toward α-amylase and acetylcholine esterase (IC50 311.7 and 388.6 μg/mL, respectively) compared to other three Auricularia cultivars. The A. cornea var. Li (IC50, 271.4 μg/mL) displayed strong inhibition towards α-glucosidase. The results suggest that a submerged culture of Auricula is an effective method to produce total phenolics which could potentially be used as a natural antioxidant in the food and pharmaceutical industries.

Sensory Qualities, Antioxidant Activities, and in vitro Inhibition of Enzymes Relevant to Type-2 Diabetes by Biscuits Produced from 5 Wheat-Bambara Groundnut Flour Blends

2013 ◽  
Vol 9 (1) ◽  
pp. 17-28 ◽  
Author(s):  
Stephen Adeniyi Adefegha ◽  
Ganiyu Oboh
Keyword(s):  
Wheat Flour ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Bambara Groundnut ◽  
Phenolic Contents ◽  
Significant Difference ◽  
Flour Blends ◽  
General Acceptability

AbstractIn this study, wheat flour was replaced and/or substituted with bambara groundnut flour. Four blends were prepared by mixing the wheat flour with bambara groundnut flours in the proportions of 100:0 (WWB), 75:25 (BGFB-25), 50:50 (BGFB-50), and 0:100 (BGFB-100). These blends were then fortified with powdered orange peels (3%), for the production of biscuits. The sensory evaluation of the biscuits revealed that there was no significant difference (p > 0.05) between all the biscuits in aroma, color, and texture, while significant difference was observed in their taste and general acceptability; with WWB ranking the highest in taste and general acceptability. Aqueous extracts of biscuits were prepared. The result revealed that biscuit extracts exhibited good antioxidant [DPPH (1,1-diphenyl-2-picrylhyrazyl) and ABTS (2,2-azinobis-3-ethylbenzo-thiazoline-6-sulfonate) radical scavenging abilities and reducing property] and enzyme (α-amylase and α-glucosidase) inhibitory properties (in vitro). The inhibitory effects on α-amylase and α-glucosidase could be attributed to the phenolic contents and antioxidant properties of the biscuit extracts; moreover, BGFB-100 showed the highest antioxidant and enzyme inhibitory properties.

scholarly journals A Member of Complementary Medicinal Food

2016 ◽  
Vol 21 (4) ◽  
pp. NP43-NP48 ◽  
Author(s):  
Sevgi Kolayli ◽  
Huseyin Sahin ◽  
Zehra Can ◽  
Oktay Yildiz ◽  
Meltem Malkoc ◽  
...  
Keyword(s):  
Total Protein ◽  
Royal Jelly ◽  
Radical Scavenging Activity ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Total Protein Content ◽  
Fresh Weight ◽  
Phenolic Contents ◽  
Medicinal Food

This study investigated various chemical and antioxidant properties of Anatolian royal jelly samples. Moisture, pH, total protein, 10-hydroxy-2-decenoic acid (10-HDA) and sugars were analyzed from 18 samples. Total phenolic contents, ferric reducing antioxidant capacity and 2,2-diphenyl-1-picryhydrazyl (DPPH) free radical scavenging activity were measured as antioxidant determinants. 10-HDA contents and total protein content of fresh weight ranged between 1.0% and 3.9%, and 11.4% and 15.8%, respectively. The main sugars detected were glucose and fructose. Maltose, trehalose, and melibiose were detected at less than 1.0% in all samples. Lactose, a milk sugar, was detected in only 3 samples, at values between 0.8% and 1.4%. Total henolic content ranged from 91.0 to 301.0 mg gallic acid equivalents/kg fresh weight. Antioxidant activity is due to both to the total phenolic content, proteins and fatty acids of royal jelly. Anatolian royal jelly samples were not different from other royal jelly samples from across the world.

scholarly journals IN VITRO ANTIOXIDANT ACTIVITY, TOTAL PHENOLIC CONTENTS AND PHYTOCHEMICAL EVALUATION FROM CRUDE EXTRACTS OF AN ENDANGERED PLANT CORDIA MACLEODII HOOK. F. THOMSON

2019 ◽  
Vol 8 (3) ◽  
Author(s):  
Jagriti Chandrakar ◽  
Satish Dubey ◽  
Kundan Ojha ◽  
Rashmi Dehariya ◽  
Ashwini Kumar Dixit
Keyword(s):  
Antioxidant Activity ◽  
Free Radical ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Hepatoprotective Activity ◽  
Total Phenolic ◽  
Phenolic Contents ◽  
Successive Extraction

Cordia macleodii, an important medicinal plant traditionally used for the treatment of various disorders, including wound healing, jaundice, gastric ulcer, hepatoprotective activity and antivenom potential, thus the plant showed the high antioxidant properties. Successive extraction of leaf and barks powder with methanol and water was tested for quantitative determination of total phenolics, total flavonoids and various in vitro antioxidant activities. Phytochemical screening of crude plant extracts revealed the presence of sterols, alkaloid, flavonoid, phenolic, Reducing sugar, glycosides, tannins and saponins. All extracts showed the significant total phenolic and flavonoid contents and as well as radical scavenging and iron-chelating activities. Among all, methanol leaf extract was observed to be higher antioxidant activity than that of other extract. The methanol extracts showed greater antioxidant activity by DPPH scavenging the free radical with IC50 values of 7.63 ± 0.38 μg gm-1 along with scavenged free radical in a concentration depended manner, which is compare to the standard ascorbic acid.  Our results revealed that the presence of grater antioxidant activity of C. macleodii extract may be due to the high level of flavonoid and phenolic content in the plant. These results clearly indicated that C. macleodii is an effective natural antioxidant. Key words: Cordia macleodii, antioxidant, radical scavenging, phenolics, flavonoid, phytochemical.

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