total phenolic content principle

Antioxidant activity total phenolic and flavonoid content

extract Acrostichum aureum had the highest total phenolic content (366 4573 2 2117 mg GAE g-1) flavonoid content (228 6087 2 2548 mg QE g-1) and very strong antioxidant activity with IC 50 value 29 5303 ppm There is positive correlation between total phenolic content flavonoid with antioxidant activity Keywords: ferns antioxidant DPPH total phenolic flavonoid INTRODUCTION Ferns

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Antioxidant activity and phenolic content in methanol

aTotal phenolic content was expressed as mg gallic acid equivalent/g dried extract bTotal flavonoid content was expressed as mg catechin equivalent/g dried extract Figure 1 Reducing power activity of methanolic crude extracts of S satureiodes T polium and S verbenaca SS: S satureioides TP: T polium SA: S verbenaca 3 2 Ferric reducing antioxidant power assay The total antioxidant

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Antioxidant activity and phenolic content of selected

The total antioxidant capacity and phenolic content of edible portions and seeds of avocado jackfruit longan mango and tamarind were studied In addition the relationship between antioxidant activity phenolic content and the different degrees of heating of mango seed kernel was investigated The seeds showed a much higher antioxidant activity and phenolic content than the edible portions

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Effects of methyl jasmonate and salicylic acid on the

2 3 Determination of the camphor and phenolic com-pounds The total phenolic content of the cell suspension cultures was determined using the Folin–Ciocalteu reagent method as described by Slinkard and Singleton (1977) Absorbance values were measured at 765 nm The total phenolic content using a standard curve of gallic acid

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ANTIOXIDANT ACTIVITY AND TOTAL PHENOLIC CONTENT IN

CIORNEI (ŞTEFĂROI) Antioxidant activity and total phenolic content in Allium Ursinum and Ranunculus Ficaria Volume XIII Issue 4 – 2014 pag 349 – 353 350 neurodegenerative disorders cancer and they also play a major role in aging process [6] Due to detection of many bioactive compounds in food with possible antioxidant activity there has been increased interest in the

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Total Phenolic assay

Total flavonoid content (TFC) was measured by aluminium chloride colorimetric assay Results: The results showed that Chukrasia tabularis (belonging to the family Meliaceae) is the richest source of phenolics and flavonoid (total Phenolic content: 17 2 mg GAE/g and total flavonoid content: 3 82 QE/g)

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NATURAL DURABILITY AND PHENOLIC CONTENT IN DRIED

NATURAL DURABILITY AND PHENOLIC CONTENT IN DRIED SCOTS PINE HEARTWOOD (Coniophora puteana) and the concentration of total phenolics was measured according to the Folin-Ciocalteu (FC) assay The relation between mass loss and phenolics in dried heartwood showed a weaker negative correlation at lower levels of phenolics as compared to the strong relationship found

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SAINS MALAYSIANA

Sains Malaysiana 40(4)(2011): 353–358 Effect of Iron Concentration on Growth Protein Content and Total Phenolic Content of Chlorella sp Cultured in Basal Medium (Kesan Kepekatan Ferum terhadap Pertumbuhan Kandungan Protein dan Jumlah Kandungan Fenolik Chlorella sp yang dikultur dalam Media Basal) D ian I riani 1 2 * O rasa S uriyaphan 3 N ittaya C haiyanate 4 1 Department of

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Determination of total phenolic and flavonoid content

The total phenolic content of the methanolic root extract calculated from the calibration curve (R 2 = 0 998) was 45 17 1 70 gallic acid equivalents/g and the total flavonoid content (R 2 = 0 999) was 35 2 20 rutin equivalents/g () Phenolic compounds have redox properties which allow them to act as antioxidants As their free radical scavenging ability is facilitated by their

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RADICAL SCAVENGING ANTIMICROBIAL ACTIVITY AND PHENOLIC

Total phenolic content was determined by HPLC subsequent to preliminary acid hydrolysis of samples For determination of extract infl uence to creating and transformation of hydroxide (OH) radicals and (DPPH) radicals extracts have been dissolved in distillated water and added to Fenton's model system in concentration of 0 2 mg/ml High value antioxidant activity (AA) in relation to

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SUPPLEMENTARY MATERIAL Essential oil composition

antioxidant activity and total phenolic and flavonoid content of extracts from plant parts (leaf flower and stem) of T alyssifolium The principle components of the essential oil were trans-β-caryophyllene (16 87%) ar-curcumene (11 43%) and bisabolene (11 06%) representing 39 36% of the oil The total phenolic contents ranged between 13 99 to 41 54 mg of GAE/g of extract The

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ANALYTICAL METHODS FOR THE DETERMINATION OF

Project Methods Due to the existence of thousands of phenolic compounds in plant and botanical materials sophisticated extraction separation detection and data processing methods will be used for this project Reversed phase-high performance liquid chromatography (RP-HPLC) with acid and base hydrolysis pre-treatment will be used to analyze phenolic acids

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Frontiers

Phenolic compounds are broadly represented in plant kingdom and their occurrence in easily accessible low-cost sources like wastes from agri-food processing have led in the last decade to an increase of interest in their recovery and further exploitation Indeed most of these compounds are endowed with beneficial properties to human health (e g in the prevention of cancer and

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Essential oil composition antioxidant activity and

The principle components of the essential oil were trans-β-caryophyllene (16 87%) ar-curcumene (11 43%) and bisabolene (11 06%) representing 39 36% of the oil The total phenolic contents ranged between 13 99 and 41 54 mg of GAE/g of extract The concentrations of flavonoids varied from 16 82 to 49 52 mg of Ru/g of extract Antioxidant

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Free radical scavenging activity total phenolic content

(1992) method which is based on the principle of scavenging the DPPH (1 1-diphenyl-2-picrylhydrazyl) radical DPPH was added to the solutions prepared with plant extracts and standard antioxidant substances and stirred Each mixture was kept in the dark for 30 min and the absorbance was mea-sured at 517 nm against a blank (Shimada et al 1992) The total phenolic content of the plant

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Frontiers

Phenolic compounds are broadly represented in plant kingdom and their occurrence in easily accessible low-cost sources like wastes from agri-food processing have led in the last decade to an increase of interest in their recovery and further exploitation Indeed most of these compounds are endowed with beneficial properties to human health (e g in the prevention of cancer and

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Archives • 2018 • vol 2 227

The total phenolic content was determined by Folin-Ciocalteu method [15] 2 ml of samples (1 mg/mL) or standard were mixed with 1 mL of Folin Ciocalteu reagent (1: 10 v/v) and 1 mL of (7 5g/ml) Na 2 CO 3 was added The mixtures were incubated for 30 min at room temperature and protected from light for subsequent reading of absorbance against a blank solution consisting of methanol They were

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UNIVERSITI PUTRA MALAYSIA DETERMINATION OF HYDROPHILIC

The quantification of total phenolic content expressed as gallic acid equivalent (GAE) was based on the Folin-Ciocalteau colorimetric method The total phenolic contents (TPC) of palm oil samples were determined from crude to refined palm and palm kernel oils obtained from palm oil mills The samples was crude palm oil (CPO) refined palm oil (RPO) refined palm olein (RPOo) crude palm kernel

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Assessment of Total Phenolic and Flavonoid Content

3 2 Determination of Total Phenolic Content Figure 1 shows the total phenolic content in the samples of different leafy vegetable and fruit crops grown in Tower Garden aeroponic systems and in the soil Among the leafy vegetables the highest phenolic content was found in chard (57 73 mg GAE/g dry wt in FG and 53 45 GAE/g dry weight in AG) followed by basil red kale and parsley

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Effect of ethanol percentage upon various extraction

Total phenolic content was expressed as mg Gallic Acid Equivalents (GAE) per g of dried peanut sample 2 6 Determination of Antioxidant activity 2 6 1 DPPH radical scavenging activity DPPH method was adapted from Chuen-chom et al15 A 50 L of methanolic extract was diluted to 1 mL with methanol Then 100 L of diluted solution was reacted with 100 L of 0 2 mM DPPH solution in 96-well

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PENETAPAN KADAR FENOLIK TOTAL EKSTRAK ETANOLIK

The principle of this method is the reaction between the phenol compound with the Folin-Ciocalteau reagent producing blue color according to the total phenol content which reacts due to reduction by the Folin-Ciocalteau reagent The results showed that the total phenolic content of flower kenop (Gomphrena globosa L ) with ethanol 30% was 1 0364% 70% ethanol solvent was 1 1974% and 96%

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