scholarly journals Biological activity of peel and pulp of Pseudocydonia sinensis Schneid. fruits

2019 ◽  
pp. 22-28
Author(s):  
O. V. Grygorieva ◽  
S. V. Klymenko ◽  
O. N. Vergun ◽  
J. Brindza ◽  
E. Ivanišová
Keyword(s):  
Antioxidant Activity ◽  
Bioactive Compounds ◽  
Phenolic Acid ◽  
Radical Scavenging ◽  
Polyphenol Content ◽  
Total Polyphenol ◽  
Antioxidant Power ◽  
Trolox Equivalent ◽  
Chinese Quince ◽  
Positive Correlations

Pseudocydonia sinensisSchneid. (Chinese quince) fruits are an excellent source of bioactive compounds. The objective of this study was to evaluate the antioxidant activity, total polyphenol, flavonoid, and phenolic acid content of dryPseudocydonia sinensisfruits (peel and pulp) of collection fromM.M.GryshkoNationalBotanical Garden (Kyiv,Ukraine). All tested samples (peel and pulp) exhibited DPPH radical scavenging activities with values from 9.31 to 10.23 and from 5.39 to 6.85 mg TEAC/g (trolox equivalent), respectively. Antioxidant activity determined by the molybdenum reducing antioxidant power method was ranged from 122.0 to 219.31 (peel) and from 62.19 to 95.44 (pulp) mg TEAC/g of dry matter (DM). The total polyphenol content of peel and pulp was ranged from 53.17 to 78.67 and from 32.31 to 47.41 mg GAE/g (gallic acid equivalent), respectively. The total flavonoid content was ranged from 9.15 to 26.18 (peel) and from 0.55 to 0.87 mg QE/g (pulp) (equivalent to quercetin). The phenolic acids content of peel and pulp fruits was ranged from 4.40 to 8.39 and from 1.12 to 3.97 mg CAE/g (caffeic acid equivalent), respectively. The results showed that peel extracts had the highest content of bioactive compounds compared with pulp extracts. Differences between the genotypes were significant in all observed parameters. The polyphenol content presents high positive correlations between antioxidant activity and phenolic content, flavonoid, and phenolic acid. This species is potential for propagation and practice use inUkraine.

scholarly journals Influence of Packaging Material on Polyphenol Content and Antioxidant Activity in Some Commercial Beers

Processes ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 620
Author(s):  
Mihaela Mirela Bratu ◽  
Semaghiul Birghila ◽  
Antoanela Popescu ◽  
Bogdan-Stefan Negreanu-Pirjol ◽  
Marius Radu ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Polyphenol Content ◽  
Total Polyphenol ◽  
Antioxidant Power ◽  
Phenolic Contents ◽  
Significant Difference ◽  
Ferric Reducing Antioxidant Power ◽  
Lager Beer

Using two methods (ferric reducing antioxidant power and radical scavenging activity), the total polyphenol content (Folin–Ciocalteu reagent) and polyphenol patterns (HPLC) in 10 commercial lager beer brands produced in Romania was determined. Samples bottled in glass, plastic and aluminium packages were analysed for each brand when available. Results have indicated considerable variations in the total and individual phenolic contents as well as antioxidant activity across beer brands. Gallic and feulic acids were the dominant phenolic compounds identified samples. The statistical analysis indicates a significant difference between the levels of antioxidant activity detected using DPPH and FRAP, for all three types of material considered. The statistical test ANOVA indicates that the polyphenol concentration is similar across all types of material.

scholarly journals Variation of fruits morphometric parameters and bioactive compounds of Asimina triloba (L.) Dunal germplasm collection

10.5219/1019 ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 1-7
Author(s):  
Ján Brindza ◽  
Olga Grygorieva ◽  
Svitlana Klymenko ◽  
Olena Vergun ◽  
Ján Mareček ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Bioactive Compounds ◽  
Slovak Republic ◽  
Radical Scavenging ◽  
Fruit Weight ◽  
Morphometric Parameters ◽  
Total Polyphenol ◽  
Antioxidant Power ◽  
Asimina Triloba ◽  
Number Of Seeds

The objective of this study was to evaluate the morphological parameters and bioactive compounds (antioxidant activity, total polyphenol, flavonoid, and phenolic acid content) of 6 genotypes of dry Asimina triloba (L.) fruit from Slovak University of Agriculture in Nitra (Slovakia). Genotypes were obtained from the seeds that were sown in the year 2000. Their morphometric parameters were following: fruit weight from 59.00 to 241.19 g, fruit length from 50.14 to 140.11 mm, fruit diameter from 37.55 to 64.67 mm, number of fruits per cluster from 2 to 8, seed weight from 0.06 to 1.80 g, seed length from 16.33 to 29.11 mm, seed width from 9.56 to 18.33 mm, seed thickness from 4.98 to 9.75 mm, number of seeds in fruit from 4 to 16. The shape indexes of fruits were found ranging from 1.53 to 2.16. The variability of important is the average seeds weight from 7.40 to 35.61%, fruit weight from 14.84 to 32.95%, number of fruits per cluster from 18.21 to 32.54% and a number of seeds in fruit from 13.49 to 27.72%. The other characteristics are more or less stable. Total polyphenol content ranged from 22.13 to 37.36 mg GAE per g, total flavonoid content from 15.10 to 32.03 mg QE per g and phenolic acids content from 0.23 to 0.76 mg CAE per g. All tested samples exhibited DPPH radical scavenging activities with values from 2.84 to 7.04 mg TEAC per g. Antioxidant activity by molybdenum reducing antioxidant power method ranged from 97.25 to 275.41 mg TEAC per g of dry matter. Differences between the genotypes were significant in all observed parameters. This species is potential for propagation and practice used in the Slovak Republic.

scholarly journals In vitro antioxidant activity of honeydew and multifloral types of honey from Serbia

2013 ◽  
pp. 269-277 ◽  
Author(s):  
Zoran Maksimovic ◽  
Nebojsa Nedic
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Properties ◽  
Geographic Origin ◽  
Radical Scavenging ◽  
Colour Intensity ◽  
Polyphenol Content ◽  
Total Polyphenol ◽  
Antioxidant Power ◽  
Total Polyphenol Content ◽  
Ferric Reducing Antioxidant Power

Antioxidant properties of fifteen multifloral and honeydew types of honey from Serbia were assessed by determination of ferric-reducing antioxidant power (FRAP assay) and 2,2- diphenyl-1-picrylhydrazyl free radical scavenging ability (DPPH assay), with respect to their total polyphenol content and colour intensity. The results of this study showed that total polyphenol content, antioxidant activity and colour intensity varied widely among different samples, even within the same type of honey. All investigated parameters were strongly dependent on geographic origin of samples, further emphasizing the importance of their detailed chemical characterisation. In general, polyphenolic content in investigated samples of honey, expressed as catechin equivalents, ranged from 480.2 to 1861.1 mg/kg. The ferric-reducing antioxidant power of honey tended to be lower in brighter and higher in darker samples, varying between 489.6 and 3089.8 ?mol Fe(II) per 100 g of honey. The correlation between the colour and antioxidant activity never reached statistical significance in the case of honeydew type of honey, which was opposed to a trend observed in the case of multifloral honey.

scholarly journals Ultrasonic Extraction of Bioactive Compounds From Green Soybean Pods and Application in Green Soybean Milk Antioxidants Fortification

2021 ◽  
Author(s):  
Noppol Leksawasdi ◽  
Siraphat Taesuwan ◽  
Trakul Prommajak ◽  
Charin Techapun ◽  
Rattanaporn Khonchaisri ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Bioactive Compounds ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Bioactive Compound ◽  
Natural Antioxidants ◽  
Dependent Manner ◽  
Ultrasound Technique ◽  
Antioxidant Power ◽  
Soybean Milk

Abstract Green soybean (Glycine max L.) pods (GSP) are agro-industrial waste from the production of frozen green soybean and milk. These pods contain natural antioxidants and various bioactive compounds that are still underutilized. Polyphenols and flavonoids in GSP were extracted by ultrasound techniques and used in antioxidant fortification of green soybean milk. The ultrasound extraction that yielded the highest total polyphenol content was 50% amplitude for 10 min, whereas maximum flavonoids content was obtained at 50% amplitude for 15 min. Radical scavenging activity assayed by 2,2-diphenyl-1-picryl-hydrazyl radical (DPPH) and ferric reducing antioxidant power (FRAP) methods did not differ significantly (p>0.05) between the two conditions. Response surface methodology was applied to analyze an optimum ultrasonic-assisted extraction (UAE) condition of these variables. The highest desirability was found to be 50% amplitude with extraction time of 12.5 min. Fortification of the GSP extracts (1-3% v/v) in green soybean milk resulted in higher levels of bioactive compounds and antioxidant activity in a dose-dependent manner. Procyanidins were found to be the main polyphenols in dried GSP which were present at the concentration of 104.1 ± 2.1 mg/g dry sample, respectively. Addition of GSP extracts obtained by using an ultrasound technique to green soybean milk increased its bioactive compound content especially procyanidins as well as its antioxidant activity.

scholarly journals Variation of Polyphenol Content and Antioxidant Activity in Some Bilberry (Vaccinium myrtillus L.) Populations from Romania

Agronomy ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2557
Author(s):  
Sorin Ciulca ◽  
Gheorghe Roma ◽  
Ersilia Alexa ◽  
Isidora Radulov ◽  
Ileana Cocan ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Radical Scavenging ◽  
Vaccinium Myrtillus ◽  
Polyphenol Content ◽  
Total Polyphenol ◽  
Total Polyphenol Content ◽  
Modified Method ◽  
Free Radical Scavenging Assay ◽  
Vaccinium Myrtillus L ◽  
Nutraceutical Properties

Fruits of bilberry (Vaccinium myrtillus L.) are valued mainly for their nutraceutical properties, and are among the fruits with the highest antioxidant activity due to their high content of phenolic compounds. The aim of this research was to assess the total polyphenol content and antioxidant activity of fruits in six wild bilberry populations from two regions of Romania over three years. The total polyphenol content was determined according to the Folin–Ciocalteu modified method, while the antioxidant activity was evaluated using the DPPH (2,2-diphenyl-1-picrylhydrazyl) free radical scavenging assay. The Padis and Raul Lung populations registered the highest values of polyphenol content and antioxidant activity, as such the fruits of these bilberry populations could be considered potential sources of antioxidants for direct consumption or for use as ingredients for food products or food supplements. Significant variation of total polyphenol content and antioxidant activity was observed both between populations from the same region and from different regions. The low level of broad sense heritability for total polyphenol content and antioxidant activity associated with the high effects of year, and population–year interaction indicates that the accumulation of polyphenols in bilberry fruits is influenced by changes in environmental conditions.

Bioactive Compounds and Prebiotic Activity in Thailand-Grown Red and White Guava Fruit (Psidium guajava L.)

2011 ◽  
Vol 17 (3) ◽  
pp. 205-212 ◽  
Author(s):  
W. Thuaytong ◽  
P. Anprung
Keyword(s):  
Volatile Compounds ◽  
Bioactive Compounds ◽  
Solid Phase ◽  
Radical Scavenging ◽  
Psidium Guajava ◽  
Antioxidant Power ◽  
Prebiotic Activity ◽  
Guava Fruit ◽  
Trolox Equivalent ◽  
Ferric Reducing Antioxidant Power

This research involves the comparison of bioactive compounds, volatile compounds and prebiotic activity of white guava (Psidium guajava L.) cv. Pansithong and red guava cv. Samsi. The antioxidant activity values determined by 2-diphenyl-1-picryhydrazyl (DPPH) free radical scavenging and ferric reducing antioxidant power (FRAP) assays were 10.28 µg fresh weight (fw)/µg DPPH and 78.56 µg Trolox equivalent (TE)/g fw for white guava and 7.82 µg/µg DPPH, fw and 111.06 µg TE/g fw for red guava. Ascorbic acid contents were 130 and 112mg/100g fw total phenolics contents 145.52 and 163.36 mg gallic acid equivalents (GAE)/100 g fw and total flavonoids contents 19.06 and 35.85 mg catechin equivalents (CE)/100 g fw, in white and red guava, respectively. Volatile compounds in guava were analyzed by the solid-phase microextraction (SPME)/gas chromatography (GC)/mass spectrometry (MS) method. The major constituents identified in white and red guavas were cinnamyl alcohol, ethyl benzoate, ß-caryophyllene, (E)-3-hexenyl acetate and α-bisabolene. Prebiotic activity scores for Lactobacillus acidophilus LA-5 and Bifidobacterium lactis BB-12 were 0.12 and 0.28 in white guava, respectively, and 0.13 and 0.29 in red guava, respectively.

scholarly journals ANALYSIS OF BIOACTIVE COMPOUNDS AND ANTIOXIDANT ACTIVITY OF PRUNUS CERASUS (SOUR CHERRY)

2020 ◽  
pp. 4-5
Author(s):  
NAGENDAR SHETTY ◽  
INDU
Keyword(s):  
Antioxidant Activity ◽  
Bioactive Compounds ◽  
Methanol Extract ◽  
Radical Scavenging ◽  
Vascular Diseases ◽  
Sour Cherry ◽  
Prunus Cerasus ◽  
Frap Assay ◽  
Antioxidant Power ◽  
Beneficial Effects

Objective: Prunus cerasus L. is consumed as a dietary supplement to promoting health benefits. The purpose of this study was to investigate the phenol and flavonoids content of sour cherry methanol extract in terms of antioxidant activity. Methods: The content of polyphenols and flavonoids was quantified. DPPH and FRAP assay were used to evaluate the radical scavenging properties and reducing the antioxidant power of sour cherry fruit. Results: DPPH scavenging activity was evaluated IC50 10.32±2.23 mg/ml and FRAP was estimated at 205±30 µmol/g. Conclusion: Sour cherry methanol extract includes various bioactive compounds like polyphenols, flavonoids and anthocyanidins, which can be valuable beneficial effects to the prevention of various vascular diseases.

scholarly journals Effect of Two Drying Methods on the Bioactive Cashew Apple Varieties Consumed in the City of Garoua (Northern Cameroon)

2021 ◽  
pp. 64-77
Author(s):  
Kouogueu Seuyim Ghislain ◽  
Nguedjo Wandji Maxwell ◽  
Dibacto Kemadjou Ruth Edwige ◽  
Nseme Mboma Yves Didier ◽  
Djouka Nembot Pelagie Marcel ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Bioactive Compounds ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Drying Methods ◽  
Dpph Radical ◽  
Constant Weight ◽  
Antioxidant Power ◽  
Cashew Apple ◽  
The Impact

Aims: The cashew tree (family Anacardiaceae) grows widely in many parts of African countries, including Cameroon. Its fruit and nut are used for food and several studies have shown their beneficial effects on health. This work aimed to evaluate the impact of two drying methods on the content of bioactive compounds and antioxidant activity. Methodology: Four varieties (VAR 1, VAR 2, VAR 3, VAR 4) of cashew apple samples were collected and drying using sun-dried and oven-dried to a constant weight, and then ground in a blender to a powder, the fresh one was cut up and crushed in a blender. All sample were reconstituted with distilled water and polyphenols, flavonoids, alkaloids contents, and antioxidant activity through different mechanisms (DPPH radical, FRAP and TAC assays) were assessed. Results: Alkaloids ranged from 1.50 mg EQui/g MF to 5.69 mg EQui/g DM for fresh and oven-dried VAR 1 respectively, polyphenols ranged from 786.15 mg EAG/g MF to 2836.92 mg EAG/g DM for fresh and oven-dried VAR 1 respectively, flavonoids ranged from 8.18 mg EAG/g MF to 295.45 mg EAG/g DM for fresh and oven-dried VAR 2 respectively. TAC values ranged from 13.09 mg EAA/g MF to 67.06 mg EAA/g for fresh and oven-dried VAR3 and VAR2 respectively. The highest DPPH radical scavenging value (86.25%) was obtained with fresh VAR 4 and the lowest (25.67%) with fresh VAR 1. The highest ferric reducing antioxidant power (FRAP) was obtained with fresh VAR 1 and VAR 3 (0.27 mg AAE/g MF) and the lowest with VAR 3 and VAR 4 oven-dried (0.23 mg AAE/g MF). Conclusion: In conclusion, the different cashew varieties studied in this work are a good source of antioxidants. The drying method significantly affects bioactive compounds and antioxidant activities. A weak but not significant correlation was obtained between the number of bioactive compounds and antioxidant activities.

scholarly journals A Comparison of Nutritional Values, Bioactive Compounds, Amino Acids, and Antioxidant Activities of Alfalfa (Medicago sativa) Plant and Pellet for Use as Beneficial Material Ruminant Feed

2021 ◽  
Vol 18 (5) ◽  
Author(s):  
Supreena SRISAIKHAM
Keyword(s):  
Amino Acids ◽  
Antioxidant Activity ◽  
Bioactive Compounds ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Neutral Detergent Fiber ◽  
Total Phenolic ◽  
Frap Assay ◽  
Antioxidant Power ◽  
Nutritional Values

Aqueous extracts of whole alfalfa plants (AP) and alfalfa pellets (APe) were examined for nutritional values, bioactive compounds (total phenolic content (TPC), phenolic compounds (PC), total flavonoids content (TFC), flavonoids compounds (FC), isoflavones), amino acids (AA) and antioxidant activity of AP and APe assessed via a DHHP radical scavenging assay and ferric reducing antioxidant power (FRAP) assay. The potential ingredients in the form of AP and APe were used to evaluate the nutritional values measured by chemical composition, and to investigate bioactive compounds, AA and antioxidant activity to further contribute to use as a feed ingredient or application as a high-value alternative feed supplement in the ruminant diet. Crude protein and tannins were higher in the APe (18.17 and 3.08 %) than the AP (16.21 and 1.80 %). Higher content of organic matter, crude fiber, neutral-detergent fiber, acid-detergent fiber, acid-detergent lignin was observed for AP than APe. The TPC and TFC were more abundant in AP than in APe and AP also showed stronger antioxidant activity via DPPH than APe, with positive correlations of TPC, TFC and DPPH. The highest values of gallic acid in terms of PC and apigenin in terms of FC of APe were 215.30 and 2278.27 µg/g dry weight (DW), respectively, while the highest levels of genistein and daidzein occurred in AP at 104.37 and 130.91 µg/g DW, respectively. The total of essential AA was found to be in vary the range of 9.33 to 16689.47 µg/g DW in different forms of samples, with valine as the highest (5451 µg/g DW) in APe, followed by phenylalanine (4.30 µg/g DW) in AP.

scholarly journals Influence of Packaging Material on Polyphenol Content and Antioxidant Activity in Some Commercial Beers

2020 ◽  
Author(s):  
Mihaela Mirela Bratu ◽  
Semaghiul Birghila ◽  
Antoanela Popescu ◽  
Bogdan Stefan Negreanu- Pirjol ◽  
Marius Radu
Keyword(s):  
Antioxidant Activity ◽  
Plastic Material ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Packaging Material ◽  
Polyphenol Content ◽  
Antioxidant Power ◽  
Phenolic Contents ◽  
Dpph Method ◽  
Ferric Reducing Antioxidant Power

<div><div><div><div><p>Using two methods (ferric reducing antioxidant power and radical scavenging activity), the total polyphenol content (Folin–Ciocalteu reagent) and polyphenol patterns (HPLC) in 10 commercial lager beer brands produced in Romania was determined. Samples bottled in glass, plastic and aluminium packages were analysed for each brand when available. Results have indicated considerable variations in the total and individual phenolic contents as well as antioxidant activity across beer brands. A statistical analysis was performed to assess the influence of packaging type on the antioxidant activity and phenolic content of the beers. Statistical differences were found between the DPPH and FRAP methods in glass, aluminium and plastic material. Moreover, the antioxidant activity based on the DPPH method is influenced by the type of packaging material, while in the case of FRAP method, no statistical difference was reported. Furthermore, the same analysis has shown that the polyphenol concentration is invariant to the type of material.</p></div></div></div></div>

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