scholarly journals Physical Properties Investigation on Sunscreens with Colloidal Gold and Moringa oleifera Extract

2020 ◽  
Vol 9 (1) ◽  
pp. 1-7
Author(s):  
Ruth Febriana Kesuma ◽  
◽  
Eva Monica ◽  
Rokiy Alfanaar ◽  
◽  
...  
Keyword(s):  
Physical Properties ◽  
Moringa Oleifera ◽  
Diffuse Reflectance ◽  
Unique Property ◽  
Bandgap Energy ◽  
Protection Factor ◽  
Localized State ◽  
Colloidal Form ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging

Botanicals were known as active ingredients in sunscreens due to their dermal protecting. Gold in colloidal form has a completely unique property for the reason that it may be used as photoaging material. The exposure of UV radiation to skin can cause erythema and skin cancer. The aim of this study was to determine the physical properties of the sunscreens made from Au/ZnO and antioxidant from Moringa oleifera extract such as the sun protection factor (SPF), pH, spreadability, and adhesion. The Moringa oleifera were extracted by maceration. Maceration with 70% ethanol of dried leaves exhibited DPPH scavenging activity (EC50 235.01 μg/mL). Diffuse reflectance UV-Vis spectra of ZnO and Au/ZnO revealed absorption at λex of 385 nm which were equivalent to a bandgap energy of 3.22 eV. Au/ZnO posed a localized state at λex of 385 (3.65 eV). The sunscreens with formulations F1, F2, F3, and F4 showed high SPF number of 20.1479, 21.0008, 22.3872, and18.4631. Kruskal-Wallis test showed significant differences between sunscreen formulations.

scholarly journals Comparative Antioxidant Analysis of Moringa oleifera Leaf Extracts from South Western States in Nigeria

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Ayonposi Bukola Olaoye ◽  
Charles Ayorinde Ologunde ◽  
Olorunfemi Raphael Molehin ◽  
Ikechukwu Nwankwo
Keyword(s):  
Soil Type ◽  
Moringa Oleifera ◽  
Environmental Parameters ◽  
Maximum Temperature ◽  
Scavenging Activity ◽  
Leaf Extracts ◽  
Plant Collection ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging ◽  
The Tropics

Abstract Background Moringa oleifera is a medicinal plant that ethnobotanical studies have shown its inclusion in treatment of many ailments such as diarrhea, diabetes, epilepsy, wound healing and arthritis. It is a plant that was believed to originate from India but could now be found in both the tropics and the sub-topics. Earlier reports have not addressed the association between the location of plant collection and its antioxidant contents. In this study, Moringa oleifera leaves were collected from 21 locations within the south western states of Nigeria. Leaves from each of the locations were dried and evaluated for total phenols, tannin, saponin and flavonoid. DPPH scavenging activity, nitric oxide scavenging activity and inhibition of lipid peroxidation were also evaluated. Results All the parameters analysed showed significant within- and between-group differences. Some locations had greater DPPH scavenging ability than the standard (quercetin). Conclusion Environmental parameters like annual precipitation, minimum temperature and maximum temperature, and soil type of the location of the plants showed influence on the level of antioxidant, while further analysis using metaboanalyst showed a notable effect of soil type on the antioxidant activity.

scholarly journals Antioxidant and Antidiabetic Potential of Saponin Fraction Isolated from Moringa oleifera Leaves

2020 ◽  
Vol 63 (2) ◽  
pp. 86-92
Author(s):  
Fatma Hussain ◽  
Fatima Ikram
Keyword(s):  
Moringa Oleifera ◽  
Dry Weight ◽  
Total Phenolic ◽  
Phenolic Contents ◽  
Moringa Oleifera Leaves ◽  
Dpph Scavenging Activity ◽  
Saponin Fraction ◽  
Dpph Scavenging ◽  
Layer Chromatography ◽  
Bio Assay

To assess total phenolic contents, total flavonoid contents (TPC, TFC), DPPH scavenging and antidiabetic (antiglycation and alpha amylase hindrance) activities of Moringa oleifera (MO) leaves, bio- assay guided fractionation was used with thin layer chromatography profile to isolate saponin fraction (SF). The TPC and TFC were 9.7-12.8 GAE and 5.3-9.3 CE (g/100 g dry weight), respectively and aqueous and methanol fractions were more effective. DPPH scavenging activity ranged 69.5-83.1%. SF displayed noteworthy antioxidant ability (p<0.046) and it was leading inhibitor of glycation (p<0.041) after MeOH with 48.1% restriction. Enzyme inhibition by MO fractions was negligible (3.4-9.2%) and it was less impressive by SF as compared to MeOH extract. Percent reduction in enzyme activity by SF was non- significant (p>0.198), nullifying its concentration dependent impact.    

Characterization of non polar-polar solvent extracts from some tea plantation shade tree leaves with special reference to antioxidant and antibacterial activities

2020 ◽  
pp. 15-21
Author(s):  
Arindam Ghosh ◽  
Soumya Majumder ◽  
Sumedha Saha ◽  
Malay Bhattacharya
Keyword(s):  
Cardiac Glycosides ◽  
Polar Solvent ◽  
Reducing Power ◽  
Scavenging Activity ◽  
Shade Trees ◽  
Crude Fibre ◽  
Shade Tree ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging

Beneficial properties of shade trees of tea plantations other than their medicinal properties have been extensively studied. This research was initiated to explore the properties of some shade trees with special emphasis on their antioxidant and antibacterial properties. Leaves from shade tree like Dalbergia sissoo (DS), Cassia siamea (CS), Derris robusta (DR), Leucaena leucocephala (LL), Acacia lenticularis (AL) and Melia azedarach (MA) were used for the study. Characterization of shade tree leaves by determination of moisture, crude fibre and ash content and tests of non polar – polar solvent extracts for steroid, tannins, cardiac glycosides and coumarin, free radical scavenging, ferric reducing power, NO scavenging activities, quantification of Flavonoids and antibacterial activity were conducted. The average moisture, crude fibre and ash percentage of shade tree plants were found to be 62.95, 11.28 and 1.86 respectively. Methanol, ethanol, acetone and ethyl acetate respectively proved to be the most potent solvent for various phytochemical extractions as it gave positive results for tests like tannin, steroid, cardiac glycosides and coumarin. AL (91.46%), DR (92.69%), LL (94.32%) and MA (93.34%) leaf extracts showed a high level of DPPH scavenging activity in their water extracts. In DS (88.11%) and CS (83.23%) maximum DPPH scavenging activity was observed in Diethyl ether and Methanol extracts respectively.  Acetone extracts were more active than the water extracts in exhibiting ferric reducing power and NO scavenging activity. Summation of the quantity revealed that DS showed maximum presence of flavonoids and acetone as most potential for isolation of flavonoids. The decreasing order of summative antibacterial activity was recorded in DS, followed by CS, DR, AL, MA and LL. Chloroform showed the highest summative inhibition zone followed by ethanol, ethyl acetate, diethyl ether, acetone, water,  hexane, benzene and methanol. The antioxidant and antibacterial potential of shade trees were established.

scholarly journals Stem Lettuce and Its Metabolites: Does the Variety Make Any Difference?

Foods ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 59
Author(s):  
Janusz Malarz ◽  
Klaudia Michalska ◽  
Anna Stojakowska
Keyword(s):  
Chemical Composition ◽  
Plant Material ◽  
Methanolic Extract ◽  
Sesquiterpene Lactones ◽  
Scavenging Activity ◽  
Nmr Analysis ◽  
Caffeic Acid Derivatives ◽  
Aerial Parts ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging

The objective of the present study was to characterize chemical composition of hitherto unexamined aerial parts of Lactuca sativa var. angustana cv. Grüner Stern. In contrast to leafy and head varieties of the lettuces, asparagus lettuce grown in Europe is much less studied. Fractionation of a methanolic extract from leaves of L. sativa cv. Grüner Stern, supported with HPLC/DAD and 1H NMR analysis, led to the isolation and/or identification of numerous terpenoid and phenolic compounds, including five apocarotenoids—(-)-loliolide, (+)-dehydrovomifoliol, blumenol A, (6S,9S)-vomifoliol, and corchoionoside C; three sesquiterpene lactones; two lignans—((+)-syringaresinol and its 4-O-β-glucoside); five caffeic acid derivatives; and three flavonoids. Some of the compounds, to the best of our knowledge, have never been isolated from L. sativa before. Moreover, monolignols, phenolic acids and a tryptophan-derived alkaloid were found in the analyzed plant material. Stems, leaves and shoot tips of the asparagus lettuce were examined to assess their phenolics and sesquiterpene lactone content as well as DPPH scavenging activity. Another stem lettuce—L. sativa var. angustana cv. Karola, two cultivars of leafy lettuces and one species of wild lettuce—L. serriola, were also examined as a reference material using HPLC/DAD. The results have been discussed regarding our previous studies and the literature data available.

scholarly journals ANTIOXIDANT PROFILE AND PHYTOCHEMICAL CONTENT OF DIFFERENT PARTS OF SUPER RED DRAGON FRUIT (HYLOCEREUS COSTARICENSIS) COLLECTED FROM WEST JAVA-INDONESIA

2017 ◽  
Vol 10 (12) ◽  
pp. 290 ◽  
Author(s):  
Irda Fidrianny ◽  
Nadia Ilham ◽  
Rika Hartati
Keyword(s):  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Total Phenolic ◽  
Flavonoid Content ◽  
Phytochemical Content ◽  
Dragon Fruit ◽  
Dpph Method ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging ◽  
Different Parts

Objectives: The goals of this research were to observe antioxidant properties from different parts of super red dragon fruit (Hylocereus costaricensis) using two antioxidant testing methods which were 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2’-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid) (ABTS).Methods: Antioxidant activities were determined using DPPH and ABTS assays, total phenolic content (TPC) using Folin–Ciocalteu reagent, flavonoid content by Chang’s method.Results: Inhibitory concentration 50% (IC50) of DPPH scavenging activity of all of the extracts in the range of 2.69 μg/ml was −94.17 μg/ml. The ethyl acetate peel extract of super red dragon fruit expressed the highest TPC (4.56 g GAE/100 g) and the highest total flavonoid content (12.63 g QE/100 g). TPC in flesh extract of super red dragon fruit had a negative and significant correlation with their IC50 of ABTS. The IC50 of DPPH and IC50 of ABTS of flesh extract of super red dragon fruit showed positive and significant correlation.Conclusion: All different parts extracts of super red dragon fruit (except n-hexane flesh extract) were categorized as a very strong antioxidant by DPPH method. Phenolic compounds in flesh extract of super red dragon fruit were the major contributor in antioxidant activities by ABTS method. DPPH and ABTS showed linear results in antioxidant activities of super red dragon fruit flesh extract.

scholarly journals Comparative Study on the Nutritional and Antioxidant Components of Fruit Parts of Citrullus lanatus

2020 ◽  
pp. 39-51
Author(s):  
Stanley Kanayochukwu Nnenne ◽  
Kingsley Ikechukwu Ubaoji ◽  
Uchechukwu Chibuzo Ogbodo ◽  
Victor Henry Azubuike Enemor ◽  
Adebayo Afees Oladejo
Keyword(s):  
Citrullus Lanatus ◽  
Antioxidant Properties ◽  
Reducing Power ◽  
Proximate Analysis ◽  
Nutritional Composition ◽  
The People ◽  
Dpph Scavenging Activity ◽  
Student’S T ◽  
Dpph Scavenging ◽  
Student’S T Test

Aim: Citrullus lanatus is a fruit widely consumed for its pulp though incompletely, as its other parts (seed and rind) are discarded and may possibly offer bioactive compounds involved in ameliorating certain disease conditions. Hence, this study aimed at comparatively investigating the nutritional composition and antioxidant properties of the seed, pulp and rind of C. lanatus so as to inform the inclusion of these different parts into the fare of the people. Methodology: Standard analytical methods of Association of Official Analytical Chemists were used to determine proximate, phytochemical, vitamin, mineral and antioxidant aspects of the fruit parts. The results were analyzed using Student’s t-test at .05. Results: The proximate analysis showed a high moisture value in the pulp (93.34 +/- .82) followed by the rind (77.11 +/- 3.44) and the seed (10.00 +/- .48). High crude protein and fiber contents were both noted in the seed followed by the rind and pulp. Mineral determinations revealed potassium to be abundant in the rind (452.31mg/kg) than the seed (305.7mg/kg) and the pulp (100.5mg/kg), followed by calcium occurring more in the rind (292.61mg/kg) than in the pulp (257.21mg/kg) and seed (227.45mg/kg) and then manganese being the least concentrated among the minerals. The investigated phytochemical principles revealed the highest concentration of cardiac glycosides in the seed (14.82 +/- .66) than the rind (1.95 +/- 0.80) and pulp (1.10 +/- 0.17), followed by saponins occurring most in the rind (12.05 +/- 3.91) than the seed (10.17 +/- 0.63) and pulp (.13 +/- .01). The seed had the highest DPPH scavenging activity followed by the rind and pulp respectively. The seed also showed a higher reducing power and lipid peroxidation capacities than the other fruit parts suggesting a potent property for antioxidant activity in the fruit parts of C. lanatus. Conclusion: The findings imply that both seed and rind of C. lanatus can be good sources of nutritional, phytochemical and antioxidant components in addition to the pulp which is commonly consumed and these may be implicated in management of certain diseases with further evidential research.

scholarly journals Antioxidant potential of five commercially less valued leafy vegetables from Bangladesh

2018 ◽  
Vol 47 (4) ◽  
pp. 953-959
Author(s):  
Kishwar Jahan Shethi ◽  
Mohammad Zashim Uddin
Keyword(s):  
Phenolic Content ◽  
Leafy Vegetables ◽  
Antioxidant Potential ◽  
Total Phenolic ◽  
Scavenging Activity ◽  
Dpph Radical ◽  
Flavonoid Content ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging ◽  
Phenolic And Flavonoid

To evaluate the antioxidant potential of less valued green leafy vegetables of Bangladesh, the methanolic extracts of Alternanthera sessilis, A. philoxeroides, A. paronychioides, Glinus oppositifolius and Portulaca oleracea were subjected to assay for total phenolic content, total flavonoid content and DPPH free radicle scavenging activity. Among the studied materials, A. sessilis showed the highest phenolic and flavonoid content. However, G. oppositifolius presented the lowest phenolic content (14.53 ± 0.48 mg of GAE/g of sample) and P. oleracea exhibited minimum (7.005 ± 0.25 mg of RUE/g of sample) flavonoid content. DPPH radical scavenging activity was found to increase with increase in the concentration of each individual material. A. philoxiroides (IC50 = 6.07 ± 0.27 μg/ml) was found as the most active in DPPH radical percentage inhibition, which was followed by A. sessilis (IC50 = 7.17 ± 0.67 μg/ml). Interestingly, A. paronychioides, in spite of having good amount of total phenolic and flavonoid content, showed less DPPH scavenging activity. No linear relationship was found to exist in case of the total phenolic, flavonoid content and DPPH scavenging activity among G. oppositifolius, P. oleracea and A. paronychioides. The results from different methods may differ substantially because each complex chemical reaction generates unique values. However, all the five plants exhibited creditable antioxidant activity and thus consumption of these vegetables may play important role in combating oxidative stresses and thereby help in retaining good health.

scholarly journals Enhancing antioxidant property of instant coffee by microencapsulation via spray drying

2018 ◽  
Author(s):  
Chaleeda Borompichaichartkul ◽  
Desi Sakawulan ◽  
Richard Archer
Keyword(s):  
Spray Drying ◽  
Air Temperature ◽  
Antioxidant Property ◽  
Konjac Glucomannan ◽  
Scavenging Activity ◽  
Instant Coffee ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging ◽  
Spray Dried ◽  
Better Than

This study is aimed to improve the antioxidant property of instant coffee by using microencapsulation technique and spray drying. Concentrated coffee extract was mixed with Konjac glucomannan hydrolysate (KGMH) and Maltodextrin (MD). The mixture of coating material and coffee extract was then spray dried at 160 - 180 °C inlet air temperature and at 85-90 °C outlet air temperature. KGMH can preserve retention of phenolic compounds, DPPH scavenging activity and antioxidant activity of FRAP (p&lt;0.05 of instrant coffee better than other treatment. Keywords: Hydrolysed Konjac Glucomannan; Spray Drying; Microencapsulation; Instant Coffee, Antioxidant 

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