Impact of enzymatic treatment on chemical composition, physicochemical properties and radical scavenging activity of goldenberry (Physalis peruviana L.) juice

2007 ◽  
Vol 87 (3) ◽  
pp. 452-460 ◽  
Author(s):  
Mohamed Fawzy Ramadan ◽  
Joerg Thomas Moersel
Keyword(s):  
Chemical Composition ◽  
Physicochemical Properties ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Enzymatic Treatment ◽  
Scavenging Activity ◽  
Physalis Peruviana

scholarly journals Mangifera indica Bark Essential Oil: Chemical Composition and Biological Activities in Comparison with Aqueous and Ethanol Extracts

2018 ◽  
Vol 13 (7) ◽  
pp. 1934578X1801300
Author(s):  
Gislaine Aurelie Kemegne ◽  
Maximilienne Ascension Nyegue ◽  
Sylvain Leroy Sado Kamdem ◽  
François-Xavier Etoa ◽  
Chantal Menut
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Radical Scavenging Activity ◽  
Mangifera Indica ◽  
Radical Scavenging ◽  
Antimicrobial Properties ◽  
Scavenging Activity ◽  
Total Phenols ◽  
Dpph Method ◽  
Ethanol Extracts

Ethnobotanic surveys have revealed the use of Mangifera indica L. (Anacardiaceae) bark for the treatment of infectious diarrhea. The essential oil of M. indica bark is described for the first time for its chemical composition, radical scavenging activity (DPPH method) and antimicrobial properties. The total phenols content of its water and ethanol bark extracts as well as their radical scavenging and antimicrobial properties were also evaluated. Four commercial plant extracts were also studied for a comparison purpose. The antimicrobial activities were measured for all samples against three Gram (-): Escherichia coli, Salmonella enteritidis, Shigella and two Gram (+): Staphylococcus aureus and Bacillus cereus bacteria. The M. indica bark essential oil was characterized by the association of two major sesquiterpenes: ( E)-β-caryophyllene (60.3%) and α-humulene (36.7%). It presented the lowest ratio of concentration to inhibition zone diameter on all the strains. The aqueous and ethanol extracts of M. indica bark were characterized by high contents of total phenols compounds and high radical scavenging activity compared to the essential oil. Finally, the interesting combination of the antibacterial and antiradical activities of the aqueous M. indica bark extract justifies the traditional use of this plant part in decoction form for the treatment of diarrheal infections.

scholarly journals CHEMICAL COMPOSITION AND HEPATOPROTECTIVE EFFECTS OF POLYPHENOLIC FRACTION FROM RIVEA HYPOCRATERIFORMIS IN PARACETAMOL INDUCED LIVER DAMAGE IN WISTAR ALBINO RATS

2016 ◽  
Vol 8 (10) ◽  
pp. 228
Author(s):  
Shivakumar S. Godipurge ◽  
Naveen J. Biradar ◽  
Jaiprakash S. Biradar ◽  
Nitin Mahurkar
Keyword(s):  
Lipid Peroxidation ◽  
Chemical Composition ◽  
Hydroxyl Radical ◽  
Liver Damage ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Scavenging Activity ◽  
Aerial Parts ◽  
Hepatoprotective Effects ◽  
Phenolic And Flavonoid

<p><strong>Objective: </strong>This study was designed to chemical composition and hepatoprotective effects of a polyphenolic fraction of aerial parts of <em>R. hypocrateriformis </em>(PPFRH). It was shown to exhibit strong <em>in vitro</em> lipid peroxidation and scavenging activity against hydroxyl radical.</p><p><strong>Methods: </strong>The chemical composition of a polyphenolic fraction of <em>R. hypocrateriformis</em> was analyzed by High-performance liquid chromatography method. Hepatocellular injuries induced by paracetamol were assessed by liver damage in Wistar albino rat; the hepatoprotective effect was evaluated by biochemical parameters in rat serum, antioxidant hydroxyl radical scavenging activity and lipid peroxidation in liver tissue.</p><p><strong>Results: </strong>The polyphenolic fraction of aerial parts of <em>R. hypocrateriformis</em> for lipid peroxidation is significantly (p&lt;0.05). In the hepatoprotective activity of liver enzymes and hepatic necrosis were significantly (p&lt;0.001) closer to paracetamol. The correlation coefficient between the hydroxyl scavenging radical and total phenolic and flavonoid contents were found to be R² = 0.9045 and R² = 0.8876 suggesting the contribution of phenolic and flavonoid compounds of the polyphenolic fraction of aerial parts of <em>R. hypocrateriformis</em> by 90% and 88% to its radical scavenging activity.</p><p><strong>Conclusion: </strong>The polyphenolic fraction of aerial parts of <em>R. hypocrateriformis</em> possesses a significant protective effect against acute hepatotoxicity induced by paracetamol and which may be due to the phenolic and flavonoid components.</p>

scholarly journals Correlation between chemical composition and radical scavenging activity of 10 commercial essential oils: Impact of microencapsulation on functional properties of essential oils

2020 ◽  
Vol 13 (8) ◽  
pp. 6815-6827 ◽  
Author(s):  
Hoda Hanem Mohamed Fadel ◽  
Ahmed H. El-Ghorab ◽  
Ahmed M.S. Hussein ◽  
Khaled F. El-Massry ◽  
Shereen Nazeh Lotfy ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oils ◽  
Functional Properties ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Scavenging Activity

scholarly journals Chemical composition, botanical evaluation and screening of radical scavenging activity of collected pollen by the stingless bees Melipona rufiventris (Uruçu-amarela)

2009 ◽  
Vol 81 (2) ◽  
pp. 173-178 ◽  
Author(s):  
Tania M.S. Silva ◽  
Celso A. Camara ◽  
Antonio C.S. Lins ◽  
Maria de Fátima Agra ◽  
Eva M.S. Silva ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Stingless Bees ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Northeastern Brazil ◽  
Scavenging Activity ◽  
Dominant Type ◽  
Etoac Extract ◽  
Pollen Loads ◽  
Pollen Types

Stingless bees in Brazil are indigenous and found all over the country. Bee pollen is used for its nutritional value in the human diet. It is made up of natural flower pollen mixed with nectar and bee secretions. In order to evaluate the chemical composition, free radical scavenging activity, and botanical origin, sample of pollen loads from stingless bee, Melipona rufiventris (Uruçu amarela) was studied. The EtOAc extract of pollen of Melipona rufiventris yielded the following compounds: p-hydroxycinnamic acid, dihydroquercetin, isorhamnetin, isorhamnetin3-O-(6"-O-E-p-coumaroyl)-β-D-glucopyranoside, luteolin, and quercetin. This is the first report of the isolation of isorhamnetin3-O-(6"O-E-p-coumaroyl)β-D-glucopyranoside from pollen. The free radicalscavenging activities of different solvent extracts of pollen were determined using DPPH assay. This activity decreases in the order: EtOAc>EtOH>Hexane extract. It appears that the EtOAc extract of the pollen is a good scavenger of active oxygen species. The botanical evaluation of pollen loads showed the composition by two pollen types, with the dominant type (97.3%) being Scopariadulcis (L.) (Scrophulariaceae) and the minor one Senna obtusifolia (L.) Irwin & Barneby (Fabaceae). This suggests a specific foraging behavior in Melipona rufiventris bees, even in an environment with such a rich botanical diversity as the Northeastern Brazil.

Chemical Composition and TLC-DPPH-Radical Scavenging Activity ofCyperus alternifoliusRottb. Essential Oils

2017 ◽  
Vol 20 (4) ◽  
pp. 1125-1130 ◽  
Author(s):  
Shimaa S. Elshrif ◽  
Abd El-Nasser G. El Gendy ◽  
Abdelsamed I. Elshamy ◽  
Mahmoud I. Nassar ◽  
Hesham R. El-Seedi
Keyword(s):  
Chemical Composition ◽  
Essential Oils ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Scavenging Activity ◽  
Dpph Radical ◽  
Dpph Radical Scavenging Activity ◽  
Dpph Radical Scavenging

Wine Chemical Composition and Radical Scavenging Activity of Some Cabernet Franc Clones

2017 ◽  
Vol 18 (4) ◽  
pp. 343-350 ◽  
Author(s):  
Jelena Popovic-Djordjevic ◽  
Boris Pejin ◽  
Aleksandra Dramicanin ◽  
Sonja Jovic ◽  
Dragan Vujovic ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Scavenging Activity ◽  
Cabernet Franc

scholarly journals PHYTOCHEMICAL ANALYSIS, ASSESSMENT OF ANTIPROLIFERATIVE AND FREE RADICAL SCAVENGING ACTIVITY OF MORUS ALBA AND MORUS RUBRA FRUITS

2017 ◽  
Vol 10 (6) ◽  
pp. 189
Author(s):  
Farouk K El-baz ◽  
Amal Z Hassan ◽  
Howaida I Abd-alla ◽  
Hanan F Aly ◽  
Khaled Mahmoud
Keyword(s):  
Fatty Acid ◽  
Free Radical ◽  
Chemical Composition ◽  
Cytotoxic Activity ◽  
Cell Lines ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Scavenging Activity ◽  
Acid Methyl

Objective: Mulberry is a nontoxic commonly eaten plant, belongs to the Morus and used in folk medicine in the remedy of dysentery, antiphlogistic, diuretic, expectorant, and antidiabetic. The purpose of this study is to evaluate the antiproliferative and radical scavenging activity of the total alcoholic and successive fractions thereof of Morus alba and Morus rubra fruits. In addition, the chemical composition of the bioactive fractions of each species was investigated.Methods: The antiproliferative potential of 8 extracts on 4 human cancer cell lines, hepatocellular carcinoma (HepG2), Caucasian breast adenocarcinoma (MCF7), prostate (PC3), and colon carcinoma (HCT116) in addition to one normal cell line namely human normal immortalized skin fibroblast cells (BJ1) were carried out. Cell viability was determined using MTT assay. The potency was compared with the reference drug doxorubicin. These extracts were also assayed for 1,1-diphenyl-2-hydrazyl free radical scavenging activities. After saponification of the n-hexane fraction, unsaponifiable matter and fatty acid methyl esters were analyzed by gas liquid chromatography (GLC). The chemical composition of the bioactive fractions was investigated using gas chromatography/mass spectrometry (GC/MS) analysis.Results: All the extracts showed significant free radical scavenging activity dose-dependently. The n-hexane and dichloromethane (DCM) fractions of M. rubra exhibited potent cytotoxic activity on almost cancer cell lines. In the same pattern, ethyl acetate (EtOAc) of M. rubra has moderate cytotoxic activity against all cell lines except HepG2. DCM fraction of M. alba possessed both radical scavenging and high potential antiproliferated activities against HCT116 and MCF7 with inhibitory concentration of 43.9 and 32.3 μg/ml, respectively, while it showed no cytotoxic effect on BJ1. GLC analysis showed the major hydrocarbons in M. alba and M. rubra were heptacosane and docosane, respectively. Sterols were similar in both species but with different ratios and cholesterol was the major one. Palmitic and margaric were the major saturated fatty acid while arachidonic was the major unsaturated fatty acid in both species. GC/MS analysis showed the main compound in DCM fraction of each Morus species was palmitic acid. Furthermore, 1,11-bis-(methoxycarbonyl-ethenyl)-10,2-dihydroxy-cycloeicosane and linolelaidic acid, methyl ester were the main compounds in the EtOAc fraction of each Morus species. Whereas, the main compounds in alcoholic extract of M. alba and M. rubra were methyl-14-methyl-pentadecanoate and 1,2-O-isopropylyidene-4-nonene-1,2,3-triol, respectively.Conclusions: The results observed remarkable biological activity of the successive fractions of M. rubra more than those of M. alba and confirmed its importance as a natural bioactive source. Morus species are good candidates to be promising as possible sources for future antitumor and antioxidants in food and pharmaceutical formulations. The strong activity partly explains the potential effects of Morus species for the treatment of cancer and degenerative diseases caused by free radicals.

scholarly journals Effect of L-cysteine, Boswellia serrata, and Whey Protein on the Antioxidant and Physicochemical Properties of Pork Patties

Foods ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 993
Author(s):  
Fengqi Yang ◽  
Won-Young Cho ◽  
Han Geuk Seo ◽  
Byong-Tae Jeon ◽  
Ji-Han Kim ◽  
...  
Keyword(s):  
Physicochemical Properties ◽  
Whey Protein ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Scavenging Activity ◽  
Dpph Radical ◽  
Dpph Radical Scavenging Activity ◽  
Boswellia Serrata ◽  
Pork Patties ◽  
Dpph Radical Scavenging

This study investigated the effects of L-cysteine (C) combined with Boswellia serrata (B) and whey protein (W) on the antioxidant and physicochemical properties of pork patties. Proximate composition, water holding capacity (WHC), pH, texture profile analysis, sensory evaluation, thiobarbituric acid-reactive substances (TBARS), DPPH radical-scavenging activity, volatile basic nitrogen (VBN), and color stability were assessed. Patty VBN gradually increased throughout the storage period. However, VBN for the C treatment increased relatively slowly, indicating that cysteine can delay spoilage and extend the shelf life of patties. The protein content of the whey powder treatment group increased to a greater extent than that of the C and control (CON) groups. Pork patties supplemented with antioxidants showed significantly higher WHC and significantly lower cooking loss and hardness than the CON. Moreover, the addition of 2% whey, 1% B. serrata, and 0.25% cysteine (WBC) significantly enhanced the relative DPPH radical-scavenging activity and sensory characteristics of the patties. After 7-day storage, the MetMb and TBARS values of all treatments were significantly lower than those of the untreated. The results indicated that there was synergy among the cysteine, B. serrata, and whey protein. This finding is of great importance to the production of high-quality pork patties with enhanced shelf life.

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