scholarly journals AKTIVITAS ANTIOKSIDAN DAN TINGKAT PENERIMAAN KONSUMEN PADA MINUMAN INSTAN YANG DIPERKAYA DENGAN EKSTRAK Sargassum polycystum (Antioxidant Activity and Consumer Preference of Instant Drink Enriched with Sargassum polycystum Extract)

2015 ◽  
Vol 35 (04) ◽  
pp. 368
Author(s):  
Amir Husni ◽  
Dewi Ariani ◽  
Siti Ari Budhiyanti
Keyword(s):  
Antioxidant Activity ◽  
Ethanolic Extract ◽  
Consumer Preference ◽  
Water Levels ◽  
Sargassum Polycystum

Instant drink of ethanolic extract Sargassum polycystum with ginger flavor was made from seaweds which was processed into powder and have undergone processes of drying, extraction, cocrystalization, and sieving into powder. The objective of this research was to produce a formula of the seaweed instant drink which has a high antioxidant activityand is preferred by consumers. The formula that was used in this research waere ethanolic extract of S. polycystum, sugar and ginger. The compostion of formula including control (0:3:1), formula 1 (0.1:2.9:1), formula 2 (0.2:2.8:1), formula 3 (0.3:2.7:1), formula 4 (0.4:2.6:1), formula 5 (0.5: 2.5:1), and formula 6 (0.6:2.4:1). The result showed that the instant drink contained the value of antioxidant activity by 25.70-65.41%, total fenol of 27.74-100.36 mg GAE/gram, water levels of 0.44-1.99%, ash levels of 0.06-11.54% and the value of hedonic color 2,4-3,2(don’t like – like); hedonic flavor 1.29-3.66 (very don’t like – like); and hedonic taste 1.32-3.59 (very don’t like – like).Keywords: Instant drink, Sargassum polycystum, ginger, antioxidant ABSTRAKMinuman instan ekstrak Sargassum polycystum rasa jahe merupakan produk olahan rumput laut dalam bentuk serbuk yang sebelumnya telah mengalami proses pengeringan, ekstraksi, kokristalisasi dan pengayakan menjadi serbuk. Tujuan penelitian ini ialah menghasilkan formula minuman instan rumput laut yang mempunyai aktivitas antioksidandan disukai konsumen. Formula yang digunakan pada penelitian ini terdiri dari ekstrak etanolik S. polycystum, gula dan jahe dengan komposisi kontrol (0:3:1), formula 1 (0,1:2,9:1), formula 2 (0,2:2,8:1), formula 3 (0,3:2,7:1), formula 4 (0,4:2,6:1), formula 5 (0,5:2,5:1), dan formula 6 (0,6:2,4:1). Hasil penelitian menunjukkan bahwa minuman instanmempunyai nilai aktivitas antioksidan 25,7-65,41%, total fenol 27,74-100,36 mg GAE/gram, total gula 76,13-87,18%, kadar air 0,44-1,99%, kadar abu 0,06-11,54% dan nilai hedonis warna 2,4-3,2 (tidak suka – suka); aroma 1,29-3,66 (sangat tidak suka – suka); dan rasa 1,32-3,59 (sangat tidak suka – suka).Kata kunci: Minuman instan, Sargassum polycystum, jahe, antioksidan

scholarly journals Antioxidant Activity and Consumer Preference of Yoghurt Enriched with Sargassum polycystum Extract

2015 ◽  
Vol 18 (2) ◽  
Author(s):  
Amir Husni ◽  
Maria Madalena ◽  
U. Ustadi
Keyword(s):  
Antioxidant Activity ◽  
Lactic Acid ◽  
Chemical Composition ◽  
Ethanolic Extract ◽  
Consumer Preference ◽  
Consumer Acceptance ◽  
Acceptance Test ◽  
Sargassum Polycystum ◽  
Consumer Acceptance Test

<p>Research on the addition of antioxidants to yogurt with ethanolic extract of<br />Sargassum polycystum has been done. This study aims were to determine the effect of<br />ethanolic extract of S. polycystum into the yoghurt to the antioxidant activity and the<br />level of consumer acceptance as well as determine the effect of ethanolic extract of<br />S. polycystum of chemical composition on yoghurt. S. polycystum was extracted using<br />ethanol 96%. The ethanolic extract were inforfified into yoghurt drink and tested the<br />antioxidant activity and the chemical compositionas well as consumer acceptance test.<br />Fermented yoghurt fortified with ethanolic extract of S. polycystum of 0.00; 0.22; 0.44;<br />0.66, 0.88, and 1.10%. The results showed that the addition of ethanolic extract was not<br />significant (p&gt;0.05) on pH, but significant (p&lt;0.05) to total lactic acid, antioxidant activity,<br />chemical composition (proximate), and consumer acceptance.<br />Keywords: Antioxidant activity, ethanol cextract, Sargassum polycystum, consumer<br />acceptance, yoghurt</p>

UJI AKTIVITAS ANTIOKSIDAN FRAKSI N-HEKSAN DAUN AFRIKA (Vernonia amygdalina Del.) DENGAN METODE DPPH

2020 ◽  
Vol 5 (2) ◽  
pp. 250-257
Author(s):  
Nurul Fatimah ◽  
◽  
Reksi Sundu
Keyword(s):  
Oxidative Stress ◽  
Antioxidant Activity ◽  
Free Radicals ◽  
Ethanolic Extract ◽  
Ethanol Extract ◽  
Hexane Fraction ◽  
Phytochemical Screening ◽  
Vernonia Amygdalina ◽  
Tropical Africa ◽  
Ic50 Value

Free radicals and reactive species are widely believed to contribute to the development of several diseases by causing oxidative stress and eventually oxidative. Vernonia amygdalina (Astereacea) is a small shrub or tree between 1 and 5m high growing throughout tropical Africa. Plants are generally known as bitter leaves is well cultivated and is a general market for merchandise in several countries. The purpose of this study was to determine the antioxidant activity of hexane fraction from ethanol extract od Frican leaves (Vernonia amygdalina Del.). The method used in this study was the DPPH (1,1-Diphenil-2-Picrylhydrazyl) method. The result of phytochemical screening showed that ethanolic extract of African leaves contained a composition of secondary metabolites of alkaloids, flavonoids, tannins, steroids/triterpenoids and saponins. The antioxidant activity of the extract of n-hexane fraction was classified as very weak with an IC50 value of 317.98 ppm.

Synergistic action of propolis with levodopa in the management of Parkinsonism in Drosophila melanogaster

2020 ◽  
Vol 17 (3) ◽  
Author(s):  
Emmanuel Tiyo Ayikobua ◽  
Josephine Kasolo ◽  
Keneth Iceland Kasozi ◽  
Ejike Daniel Eze ◽  
Abass Safiriyu ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Drosophila Melanogaster ◽  
Side Effects ◽  
Motor Activity ◽  
Ethanolic Extract ◽  
Synergistic Action ◽  
Content Type ◽  
Treatment Groups ◽  
Ethanolic Extract Of Propolis ◽  
Different Doses

AbstractBackgroundThe Phosphatase and tensin-induced putative kinase 1 (PINK1B9) mutant for Drosophila melanogaster is a key tool that has been used in assessing the pathology of Parkinsonism and its possible remedy. This research was targeted toward determining the effects of ethanolic extract of propolis, with levodopa therapy in the management of Parkinsonism.MethodThe PINK1B9 flies were divided into groups and fed with the different treatment doses of ethanoic extract of propolis. The treatment groups were subjected to 21 days of administration of propolis and the levodopa at different doses after which percentage climbing index, antioxidant activity and lifespan studies were done.ResultsPropolis alone improved motor activity, antioxidant and lifespan in Drosophila melanogaster than in PINK1 flies. Propolis in combination with levodopa significantly (P<0.05) improved physiological parameters at higher than lower concentrations in Parkinsonism Drosophila melanogaster demonstrating its importance in managing side effects associated with levodopa.ConclusionPropolis is a novel candidate as an alternative and integrative medicinal option to use in the management of Parkinsonism in both animals and humans at higher concentrations.

scholarly journals Comparative Antioxidant Activity on The Ficus benjamina and Annona reticulata Leaves

2015 ◽  
Vol 4 (1) ◽  
pp. 21
Author(s):  
Nyi Mekar Saptarini ◽  
Irma Erika Herawati
Keyword(s):  
Antioxidant Activity ◽  
Ethyl Acetate ◽  
Ethanolic Extract ◽  
Natural Antioxidants ◽  
Ethyl Acetate Fraction ◽  
Hexane Fraction ◽  
Ficus Benjamina ◽  
Water Fraction ◽  
Free Radical Formation ◽  
Annona Reticulata

Antioxidants can prevent free radical formation. Natural antioxidants found in many plants, such as <em>Ficus benjamina </em>and <em>Annona reticulata</em>. The study aimed to compare the antioxidant activity of extracts and fractions of <em>Ficus benjamina </em>and <em>Annona reticulata</em> leaves against 1,1-diphenyl-2-picrilhydrazyl. The steps of this study consist of extraction, fractionation with n-hexane, ethyl acetate and water, phytochemical screening, antioxidant activity determination, and comparing the IC<sub>50</sub> values. Percentage scavenging activity of the extracts and fractions against DPPH was calculated to determine the antioxidant activity. The IC<sub>50</sub> value of <em>Ficus benjamina </em>was 127.86 ppm for ethanolic extract, 94.01 ppm for water fraction, 115.48 ppm for ethyl acetate fraction, and 335.50 ppm for n-hexane fraction. The IC<sub>50</sub> value of <em>Annona reticulata</em> was 274.31 ppm for ethanolic extract, 211.42 ppm for water fraction, 367.91 ppm for ethyl acetate fraction, and 741.08 ppm for n-hexane fraction. The results showed that the <em>Ficus benjamina</em> water fraction was the best antioxidant compared to other extract and fraction.

scholarly journals Antioxidant Activity of Averrhoa bilimbi Linn. Leaves Extract Using Two Different Types of Solvents

2021 ◽  
Author(s):  
Raja Nurul Ashiqin Raja Arifin ◽  
Juliana Jumal
Keyword(s):  
Antioxidant Activity ◽  
Gallic Acid ◽  
Skin Diseases ◽  
Water Extract ◽  
Ethanolic Extract ◽  
Natural Antioxidant ◽  
Aluminium Chloride ◽  
Total Phenolic ◽  
Different Types ◽  
Gallic Acid Equivalent

Exposed to the pollution has led to generation of reactive oxygen species (ROS) in human skin. ROS generated cause many skin diseases such as skin-aging, inflammation, melanogenesis and skin cancer. ROS is a family of oxygen-based free radicals that contains or capable of producing an unpaired electron. Antioxidant is a molecule that can inhibit the reaction of free radical from ROS by donating its electron. Averrhoa bilimbi Linn. (AVBL) is one of the potent natural antioxidant belongs to the group of Oxalidaceae which can be widely found in Asia including Malaysia. Traditionally, this plant has been used to treat many diseases such as cough, itchiness, pimple, fever and inflammation. As a result, much attention has been directed towards the studies regarding the potential of this plant in treating disease. The present study was undertaken to assess the antioxidant activity of AVBL leaves extract. The AVBL leaves were extracted using sonicator with ethanol and distilled water as two different types of solvent. The total phenolic content (TPC) and flavonoid content (TFC) of this study were determined by using Folin-Ciocalteu reagent and aluminium chloride colometric assay. Antioxidant activity of the plant extract was tested using 2,2- diphenyl-1-picrylhydrazyl (DPPH) and ferric reducing power (FRAP). From the analyses, water extract of AVBL possessed greater extraction yield (11.231%) as compared to ethanolic extract (5.358 %). However, ethanolic extract of AVBL leaves revealed higher result of TPC (126.4±0.35 mg/g gallic acid equivalent), TFC (32.80±0.37 mg/g quercetin equivalent), DPPH (0.0019±0.0003) and FRAP (41.81±0.45 mg/g gallic acid equivalent). The results of TPC and TFC have strongly positive correlation with antioxidant capacity (r = 1). Thus, it can be concluded that this plant is a potent source of natural antioxidant.

scholarly journals Antioxidant activity of ethanolic extract of Penicillium chrysogenum and Penicillium fumiculosum

2014 ◽  
Vol 68 (1) ◽  
pp. 43-49 ◽  
Author(s):  
Violeta Jakovljevic ◽  
Jasmina Milicevic ◽  
Jelica Stojanovic ◽  
Slavica Solujic ◽  
Miroslav Vrvic
Keyword(s):  
Antioxidant Activity ◽  
Penicillium Chrysogenum ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Ethanolic Extract ◽  
Free Radical Scavenging ◽  
Scavenging Activity ◽  
Total Antioxidant ◽  
Chelating Ability

The aim of this study was to investigate the biological and chemical activity on two species of fungi of the genus Penicillium isolated from wastewater. On the selected species of fungi the different antioxidant activity assays were carried out: DPPH free-radical scavenging activity, total antioxidant activity, Fe2+- chelating ability and Fe3+- reducing power. Total phenol content was also determinate for ethanolic extract of mycelia. Penicillium chrysogenum ethanolic extract contained higher total phenolic content and better total antioxidant capacity as well as ferrous ion chelating ability. Penicillium fumiculosum ethanolic extract showed higher DPPH free-radical scavenging activity, as well as reducing power. Based on the obtained results it can be concluded that two types of fungi are potential new sources of natural antioxidants.

scholarly journals Antioxidant Activities of Extracts from Celery Leaves (Apium Graveolens L) Grown in Jos, Nigeria

2020 ◽  
pp. 1-5
Author(s):  
M. Suleman Stephen ◽  
E. A. Adelakun ◽  
J. H. Kanus ◽  
Meshack M. Gideon
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Ethanolic Extract ◽  
Acetone Extract ◽  
Apium Graveolens ◽  
Isolation And Identification ◽  
Celery Plant

The presence of natural antioxidant in plants is well known. Plant phenolics constitute one of the major groups of components that act as antioxidant and free radical terminator. Hence, this study focused on investigating the antioxidant activity of Celery plant (Apium graveolens L). The fresh leaves were collected, crushed and extracted with ethanol and acetone by maceration. The radical scavenging properties of the extracts were determined by measuring changes in absorbance of DPPH radical at a wave lenght of 517 nm by UV and ascorbic acid is used as the standard. It showed that the crude ethanolic extract has higher antioxidant activity compared to ascorbic acid and acetone extract with less scavenging activity. The values were (IC50 114.6 µg/mL) for ascorbic acid, (IC50 112 µg/mL) for the crude ethanolic extract and (IC50172 µg/mL) for crude acetone extract. The result shows that Celery plant grown in Jos possess good antioxidant properties which may be linked to the presence of phenolics and flavonoids in the plant, which justifies its use as a medicinal plant. This can be further investigated for the isolation and identification of active compounds of medicinal utilities.

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