Determination of total phenolics
WebAug 1, 2024 · Determination of total phenolic content (TPC) The total phenolic content of the extracts was determined using Folin-Ciocalteu assay [12]. The Folin-Ciocalteu method is an electron transfer based assay, and gives reducing capacity which is expressed as phenolic content. Total phenolic content of plant extracts and their yield depends on the ... WebJan 1, 2002 · The total phenolic content (TPC) was determined by using the Folin-Ciocalteu method as described in the literature [23,24]. The following protocol was …
Determination of total phenolics
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WebDetermination of Total Phenol and Total Flavonoid Gallic acid calibration curves as standard phenol compounds are presented in Fig. 1, while quercetin as standard … WebDec 15, 2024 · The Folin–Ciocalteu (F-C) reaction is an antioxidant assay based on electron transfer, which measures the reductive capacity of an antioxidant. It has been widely applied in determination of the total phenol/polyphenol content of plant-derived food and biological samples.
WebOct 22, 2024 · Determination of Total Phenolics, Flavonoids, and Antioxidant Activity and GC-MS Analysis of Malaysian Stingless Bee Propolis Water Extracts Scientifica (Cairo). 2024 Oct 22;2024:3789351. doi: 10.1155/2024/3789351. eCollection 2024. Authors WebJan 12, 2024 · Total phenolic content of the extracts was calculated from the regression equation of calibration curve ( Y = 0.0108 x; R2 = 0.993) and expressed as mg gallic acid equivalents (GAE) per gram of sample in dry weight (mg/g). TPC values were higher in the fruit and bark extracts than the seed extracts.
WebApr 14, 2024 · The utilization of phenolic compounds from wine wastes as a source of biologically active compounds has attracted the attention of many researchers focusing on grape seeds, grape skins and pomace [1,2,3,4,5,6].For example, flavonoids are attracting great interest due to their good antioxidant, antimicrobial, antiviral and antifungal … WebNov 6, 2024 · In addition to the determination of the quali-quantitative profile of phenolics, it is also possible to achieve the quantification of the total content of specific classes of compounds. In this context, it is absolutely noteworthy to mention the Folin-Ciocalteu’s procedure for the determination of the total phenolic content.
WebNov 9, 2024 · The total phenolic content determined by the proposed procedure (146 ± 4 mg GAE g−1 dry weight) agreed with the reference procedure (145.0 ± 0.7 mg GAE g−1 dry weight) at the 95% of confidence level. Due to these characteristics, the proposed approach is an alternative for screening fruits in research with bioactive compounds ...
WebOct 22, 2024 · Determination of Total Phenolics, Flavonoids, and Antioxidant Activity and GC-MS Analysis of Malaysian Stingless Bee Propolis Water Extracts Scientifica (Cairo). … iphone turned on by itselfWebJul 1, 2005 · The correlation between total phenolics and QEAC (R = 0.5) was the same as that between total phenolics and AEAC (R = 0.5), neither of which were highly significant. The same moderate correlation was shown between the DPPH RSA results and total phenolic levels, suggesting that phenolic compounds were likely to be contributing to … orange park acres homesWebApr 12, 2007 · Although the F–C assay has commonly been used to assay 'total phenolic content' 7,11, the assay also measures other readily oxidized substances 13,14.When … iphone turning off and on repeatedlyWebFeb 1, 2003 · This study aims to determine antioxidant activity, total phenolic content, purpurogallin and other phenolic compounds in coffees from different geographic origins … iphone turned black but still onWeb12 hours ago · The OR1 strain was selected for the pectinase and fermentation experiment because this strain yielded significant improvements in the total phenolic content and the DPPH and ABTS antioxidant activities compared with those found with the other three strains (MA3, PP1, and PP3), as shown in Table 1.To prepare undiluted mango pulp, 10 … iphone turned off suddenlyWebNov 23, 2024 · Abstract A single-laboratory validation of a method using Folin & Ciocalteu’s phenol reagent (Folin-C reagent) for determination of total phenolic content of selected dietary supplement extracts was performed. The method is composed of a water extraction of dried extracts with sonication followed by reaction with the Folin-C reagent. iphone turns off when camera is coveredWebDec 1, 2014 · Determination of total phenols by Folin-Ciocalteu reagent method Folin-Ciocalteu reagent was used to determine the total phenolic content (TPC) of the various organic crude extracts [ 14 ]. Gallic acid was used as a reference standard (20-100 μg/mL) for plotting calibration curve. iphone turned off spinning wheel