scholarly journals Ferulic and coumaric acids, total phenolic compounds and their correlation in selected oat genotypes

2008 ◽  
Vol 25 (No. 6) ◽  
pp. 325-332 ◽  
Author(s):  
M. Kováčová ◽  
E. Malinová
Keyword(s):  
Phenolic Compounds ◽  
Ferulic Acid ◽  
Functional Foods ◽  
Slovak Republic ◽  
Total Content ◽  
Climatic Conditions ◽  
Plant Production ◽  
Total Phenolic ◽  
Coumaric Acid ◽  
Total Phenolic Compounds

Ferulic and coumaric acids were determined by high-performance liquid chromatography in 21 oat genotypes supplied from the gene bank of the Research Institute of Plant Production in Piešťany (Slovak Republic) with the aim of selecting some genotypes suitable for the preparation of functional foods. The content of coumaric acid was higher than that of ferulic acid in 61.9% of samples. The latter acid exceeded proportionally the former one in genotypes with a low content of phenolic acids, namely in the amount of up to 50 mg/100 g of grain, especially in chaffless oats. Ferulic acid content varied in the range from 16.50 mg/100 g (cultivar Jakub) to 149.36 mg/100 g of grain (cultivar Izak). The content of coumaric acid ranged between 8.05 mg/100 g (cultivar Detvan) and 210.27 mg/100 g of grain (cultivar Izak). The fact that the samples were grown in the same year (2003) in one locality (Vígľaš-Pstruša, Slovak Republic) minimises the influence of soil and climatic conditions and proves that remarkable differences between the content of ferulic and coumaric acids and the total content of phenolic compounds were caused by the genetic outfit of oats. A high correlation was found between the contents of the total phenolic compounds, ferulic acid, coumaric acid and their sum. The corresponding correlation coefficients R had the values of 0.9229, 0.9141, and 0.9211, respectively. This correlation enables one to employ a simple and inexpensive method for the determination of the total phenolic compounds using Folin-Ciocalteu reagent for a rapid assessment of differences detectable in the content of the sum of ferulic and coumaric acids in oat samples in view of the selection of genotypes suitable for the preparation of functional foods.

scholarly journals Relationships Between the Content of Phenolic Compounds and the Antioxidant Activity of Polish Honey Varieties as a Tool for Botanical Discrimination

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1810
Author(s):  
Monika Kędzierska-Matysek ◽  
Małgorzata Stryjecka ◽  
Anna Teter ◽  
Piotr Skałecki ◽  
Piotr Domaradzki ◽  
...  
Keyword(s):  
Principal Component Analysis ◽  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Caffeic Acid ◽  
Principal Component ◽  
Total Content ◽  
Component Analysis ◽  
Total Phenolic ◽  
Hydroxybenzoic Acid ◽  
Coumaric Acid

The study compared the content of eight phenolic acids and four flavonoids and the antioxidant activity of six Polish varietal honeys. An attempt was also made to determine the correlations between the antioxidant parameters of the honeys and their polyphenol profile using principal component analysis. Total phenolic content (TPC), total flavonoid content (TFC), antioxidant activity (ABTS) and reduction capacity (FRAP) were determined spectrophotometrically, and the phenolic compounds were determined using high-performance liquid chromatography (HPLC). The buckwheat honeys showed the strongest antioxidant activity, most likely because they had the highest concentrations of total phenols, total flavonoids, p-hydroxybenzoic acid, caffeic acid, p-coumaric acid, vanillic acid and chrysin. The principal component analysis (PCA) of the data showed significant relationships between the botanic origin of the honey, the total content of phenolic compounds and flavonoids and the antioxidant activity of the six Polish varietal honeys. The strongest, significant correlations were shown for parameters of antioxidant activity and TPC, TFC, p-hydroxybenzoic acid, caffeic acid and p-coumaric acid. Analysis of four principal components (explaining 86.9% of the total variance), as a classification tool, confirmed the distinctiveness of the Polish honeys in terms of their antioxidant activity and content of phenolic compounds.

scholarly journals Standardization ofTragopogon graminifoliusDC. Extract Based on Phenolic Compounds and Antioxidant Activity

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Mohammad Hosein Farzaei ◽  
Mahnaz Khanavi ◽  
Ghazaleh Moghaddam ◽  
Farzaneh Dolatshahi ◽  
Roja Rahimi ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Ferulic Acid ◽  
Aerial Part ◽  
Antioxidant Properties ◽  
Dosage Forms ◽  
Hplc Method ◽  
Total Phenolic ◽  
Root Extract ◽  
Coumaric Acid

Tragopogon graminifoliusDC. (TG), Compositae family, is traditionally used for the treatment of various diseases like gastrointestinal and hepatic disorders. The aim of the present study is to standardize extracts from TG used for preparation of different dosage forms in traditional Iranian medicine (TIM) based on phenolic compounds. For this purpose, total phenolic content and some phenolic compounds were determined in ethanolic extracts from aerial part and root of TG by HPLC method. Furthermore, antioxidant activity was evaluated using DPPH-HPLC methods. Caffeic acid, gallic acid,ρ-coumaric acid, ferulic acid, and catechin were detected in root and aerial part of TG.ρ-Coumaric acid (6.357 ± 0.014 mg·g−1) was dominant phenolic compound in aerial part followed by ferulic acid (1.24 ± 0.018 mg·g−1). Also,ρ-coumaric acid (2.685 ± 0.031 mg·g−1) was highly abundant in root, followed by catechin (2.067 ± 0.021 mg·g−1). Antioxidant activity of root extract (460.45 ± 0.78 µg Vit.E.E·mL−1) was better than that of aerial part. Generally, phenolic compounds are one of the major constituents of TG and could be used as markers for standardization of dosage forms prepared from this plant. Also, TG demonstrated significant antioxidant activity using DPPH-HPLC method. Phenolic compounds of TG may be responsible for its marked antioxidant properties.

scholarly journals Contents of dry matter, soluble sol­ids, vitamin C and phenolic compounds in the pulp and peel of different cultivars of pear fruits

2021 ◽  
Vol 28 (2) ◽  
Author(s):  
Jaunė Blažytė ◽  
Nijolė Vaitkevičienė
Keyword(s):  
Phenolic Compounds ◽  
Vitamin C ◽  
Dry Matter ◽  
Total Content ◽  
Biologically Active ◽  
Soluble Solids ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Pear Fruit ◽  
Fruit Peel

The aim of this work was to investigate and compare the amounts of biologically active compounds, dry matter and soluble solids in pulp and peels of four pear cultivars (‘Ksena’, ‘Beloruskaja pozdniaja’, ‘Alna’ and ‘Aleksandr Lucas’). The research was carried out at Vytautas Magnus University Agriculture Academy (Lithuania) in 2020. Four pear cultivars (‘Ksena’, ‘Beloruskaja pozdniaja’, ‘Alna’ and ‘Aleksandr Lucas’) were cultivated at a farm in the Joniškis District of Lithuania. Pears were grown following traditional pear production technology. The amounts of dry matter, soluble solids, vitamin C and fiber were determined using the standard method. The total content of phenolic compounds was determined using a Folin-Ciocalteu reagent with a UV/VIS spectrophotometer. The research results showed that significantly the highest amounts of soluble solids were found in the ‘Alna’ pear fruit pulp (14.25% f. w.). The ‘Alna’ peel sample had significantly the highest amount of total phenolic compounds (1290.99 mg 100 g–1 d. w.). The highest content of dry matter was found in the ‘Aleksandr Lucas’ pear fruit peel (24.67%). The ‘Aleksandr Lucas’ and ‘Beloruskaja pozdniaja’ pear fruit peel contained significantly the highest amounts of vitamin C (2.70 and 2.63 mg 100 g–1 f. w., respectively). The highest content of fiber was found in the ‘Ksena’ fruit peel (36.12% d. w.). The investigated pear peel sample had significantly higher amounts of dry matter, vitamin C, total phenolic compounds and fiber than the pulp. However, the pulp contains the highest contents of soluble solids.

scholarly journals INHIBITION OF PHOSPHATIDYLCHOLINE LIPOSOMES OXIDATION BY PHENOLIC COMPOUNDS OF ALOE EXTRACTS: A. ARBORESCENS, A. PILLANSII AND A. SQUARROSA

2019 ◽  
pp. 83-90 ◽  
Author(s):  
Natalia Nikolaevna Sazhina ◽  
Petr Vladimirovich Lapshin ◽  
Natal'ya Viktorovna Zagoskina ◽  
Nadezhda Pavlovna Palmina
Keyword(s):  
Phenolic Compounds ◽  
Biological Activities ◽  
Total Content ◽  
Biological Properties ◽  
Biologically Active ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Phosphatidylcholine Liposomes ◽  
Antioxidant Profile ◽  
Active Substances

Various species of the genus Aloe which there are in the world more than 500 are considered as important sources of biologically active substances and attract an attention of researchers by numerous manifestations of their biological properties. The most studied and used Aloe species are A. arborescens and A. vera, however some other species show not smaller biological activity, in particular antioxidant, than made mention. In the present work on model of the initiated oxidation of phosphatidylcholine liposomes comparison of the antioxidant activity (AOA) of leaves extracts of A. arborescens, A. pillansii, A. squarrosa and also the total content of their phenolic compounds was carried out. It is established that A. pillansii extract has approximately by 12 times higher AOA, than A. arborescens extract, and by 4 times, than A. squarrosa. The measured values of the total phenolic compounds content showed considerably smaller difference between these extracts. It can demonstrate existence in A. pillansii leaves of more difficult antioxidant profile, than in A. arborescens, and higher concentration of active phenolic metabolites. Results of this work allow recommending A. pillansii for more depth studies of its different biological activities.

scholarly journals Chemical, sensory and antioxidant characteristics of Bulgarian wines from native cultivars

2019 ◽  
Vol 14 (1-2) ◽  
pp. 53-59
Author(s):  
Tatyana Yoncheva ◽  
Attila Kantor ◽  
Eva Ivanišova ◽  
Nataliia Nikolaieva
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Capacity ◽  
Total Content ◽  
White Wine ◽  
Sensory Characteristics ◽  
Total Phenolic ◽  
Volatile Components ◽  
Total Phenolic Compounds ◽  
Wine Composition ◽  
Antioxidant Characteristics

A study of the chemical composition, the antioxidant capacity and the sensory characteristics of three Bulgarian wines (vintage 2015) from the native cultivars Misket Vrachanski (white), Pamid (red) and Gamza (red), grown in the region of Pleven, Central Northern Bulgaria was carried out. The results showed that the wine composition was mainly determined by the cultivar and its peculiarities. Misket Vrachanski white wine had the lowest rate of sugar-free extract, glycerol, total phenolic compounds and the highest acid content. From the red wine samples, Pamid had lower rates for the above parameters compared to Gamza. The experimental wines were analyzed for total content of esters, aldehydes and higher alcohols. A correlation was found between the rates of the studied volatile components in the wines and their aromatic sensory characteristics. At the wine tasting, Misket Vrachanski that contained the most of esters and aldehydes, was the best evaluated, followed by Gamza and Pamid. There was no correlation between the amount of total phenolic compounds in the experimental samples and their antioxidant capacity, which according to ABTS and MRAP methods increased in the order of Pamid < Misket Vrachanski < Gamza.

Phytochemical composition and antioxidant activity of Malus baccata (L.) Borkh. fruits

2020 ◽  
Vol 3 (1) ◽  
pp. 47
Author(s):  
Nadezhda Petkova ◽  
Manol Ognyanov ◽  
Blaga Inyutin ◽  
Petar Zhelev ◽  
Panteley Denev
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Activities ◽  
Ethanol Extract ◽  
Titratable Acidity ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Frap Assay ◽  
Phytochemical Composition ◽  
Malus Baccata

Crab apple (Malus baccata (L.) Borkh.) was mainly distributed in Europe as an ornamental plant, but the nutritional properties of its edible fruits were not fully revealed. The aim of the current study was to characterize the phytochemical composition of ripen carb apple fruits and to evaluate their nutritional and antioxidant potentials. The fruits were assayed for moisture and ash content, proteins, lipids, carbohydrates, titratable acidity (TA), pH, total phenolic compounds and natural pigments. Among the analyzed carbohydrates cellulose was found in the highest content (6% dw), followed by sugars (sucrose, glucose and fructose) and 1.8 % dw uronic acids. The total chlorophylls and carotenoids contents in their fruits were 6.51 and 4.80 μg/g fw, respectively. Total monomeric anthocyanins were not detected. The highest content of total phenolic compounds (2.67 mg GAE/g fw) was found in 95 % ethanol extract from fruits, while the total flavonoids were relatively low – 0.1 mg QE/g fw. DPPH assay (17.27 mM TE/g fw) and FRAP assay (14.34 mM TE/g fw) demonstrated in vitro antioxidant activities of crabapple. Malus baccata fruits were evaluated as a rich source of dietary fibers and phenolic compounds with significant antioxidant potential that could be used in human nutrition.

scholarly journals Evaluation of Silicon and Proline Application on the Oxidative Machinery in Drought-Stressed Sugar Beet

Antioxidants ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 398
Author(s):  
Muneera D. F. AlKahtani ◽  
Yaser M. Hafez ◽  
Kotb Attia ◽  
Emadeldeen Rashwan ◽  
Latifa Al Husnain ◽  
...  
Keyword(s):  
Antioxidant Enzymes ◽  
Drought Stress ◽  
Phenolic Compounds ◽  
Sugar Beet ◽  
Harmful Effect ◽  
Sugar Yield ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Sod Activity ◽  
Yield Parameters

Drought stress deleteriously affects growth, development and productivity in plants. So, we examined the silicon effect (2 mmol) and proline (10 mmol) individually or the combination (Si + proline) in alleviating the harmful effect of drought on total phenolic compounds, reactive oxygen species (ROS), chlorophyll concentration and antioxidant enzymes as well as yield parameters of drought-stressed sugar beet plants during 2018/2019 and 2019/2020 seasons. Our findings indicated that the root diameter and length (cm), root and shoot fresh weights (g plant−1) as well as root and sugar yield significantly decreased in sugar beet plants under drought. Relative water content (RWC), nitrogen (N), phosphorus (P) and potassium (K) contents and chlorophyll (Chl) concentration considerably reduced in stressed sugar beet plants that compared with control in both seasons. Nonetheless, lipid peroxidation (MDA), electrolyte leakage (EL), hydrogen peroxide (H2O2) and superoxide (O2●−) considerably elevated as signals of drought. Drought-stressed sugar beet plants showed an increase in proline accumulation, total phenolic compounds and up-regulation of antioxidant enzymes catalase (CAT) and superoxide dismutase (SOD) activity to mitigate drought effects. Si and proline individually or the combination Si + proline considerably increased root and sugar yield, sucrose%, Chl concentration and RWC, MDA and EL were remarkably reduced. The treatments led to adjust proline and total phenolic compounds as well as CAT and SOD activity in stressed sugar beet plants. We concluded that application of Si + proline under drought stress led to improve the resistance of sugar beet by regulating of proline, antioxidant enzymes, phenolic compounds and improving RWC, Chl concentration and Nitrogen, Phosphorus and Potassium (NPK) contents as well as yield parameters.

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