scholarly journals Phytochemical Content and Antioxidant Activity of Flesh Fruits Rosa canina Extracts Collected from Ait Ayach Midelt

2019 ◽  
Author(s):  
Driss Ousaaid ◽  
Ismail Mansouri ◽  
Hassan Laaroussi ◽  
Asmae ElGhouizi ◽  
Badiaa Lyoussi ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Acids ◽  
Condensed Tannins ◽  
Phenolic Content ◽  
Total Antioxidant Activity ◽  
Bioactive Substances ◽  
Rosa Canina ◽  
Phytochemical Content ◽  
Total Antioxidant ◽  
Reliable Methods

Rosa canina L. is a rich fruit on bioactive substances which provides them with high antioxidant potential, like phenolic acids, flavonoids, condensed tannins. The aim of this study was to estimate and characterize the phenolic content, flavonoids content, condensed tannins content obtained from rose hips fruits in five extracts (water, 50% v/v ethanol, 70% v/v ethanol, 80% v/v methanol, apple vinegar) to examine their antioxidant activity by two reliable methods: Total antioxidant activity and DPPH. Surprisingly, in our results, the highest polyphenol, flavonoids content and condensed tannins was observed in vinegar extract 55,51±1,16 mg GAE/g dw, 22,15±0,45 mg QE/g dw, 12,37±0,16 mg AAE/g dw respectively. Furthermore, the vinegar extract was the most effective to chelating the radical DPPH (IC50% = 0,336±0,005µg), and have the highest total antioxidant activity (7,88±0,19mg AAE/g dw). The current research showed that the vinegar was more effective than the methanol, ethanol, water for polyphenols, flavonoids, tannins extraction.

scholarly journals Bioactive compounds content and total antioxidant activity of two savoy cabbages

2014 ◽  
Vol 32 (No. 6) ◽  
pp. 549-554 ◽  
Author(s):  
M.A. Fernández-León ◽  
M. Lozano ◽  
D. González ◽  
M.C. Ayuso ◽  
M.F. Fernández-León
Keyword(s):  
Antioxidant Activity ◽  
Bioactive Compounds ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Total Antioxidant Activity ◽  
Fresh Weight ◽  
Total Antioxidant ◽  
In Vitro Antioxidant Activity

The bioactive compounds, as well as the in vitro antioxidant activity of two Savoy cabbage cultivars, Dama and Leticia, grown in west of Spain under similar conditions were identified, quantified and compared. We found that cv. Dama presented in general betters results when compared with cv. Leticia. Cv. Dama presented higher concentrations of chlorophyll a (2.26 mg/100 g fresh weight), total phenolic content (102.71 mg of chlorogenic acid equivalent/100 g fresh weight) and total intact glucosinolates (195.22 µmol of sinigrin equivalent/100 g fresh weight). Thus, cv. Dama exhibited higher values of in vitro antioxidant activity.  

scholarly journals Phenolic compounds of seed coats of white and coloured varieties of pea (Pisum sativum L.) and their total antioxidant activity

2011 ◽  
Vol 20 (No. 1) ◽  
pp. 15-22 ◽  
Author(s):  
a. Troszyńska ◽  
e. Ciska
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Phenolic Acids ◽  
Seed Coat ◽  
Condensed Tannins ◽  
Dry Matter ◽  
Condensed Tannin ◽  
Antioxidant Properties ◽  
Total Antioxidant ◽  
Seed Coats

The purpose of this study was to compare the composition and contents of phenolic acids and condensed tannin in the seed coats of white and coloured varieties of pea and to examine the antioxidant properties of methanol and acetone extracts containing these phenolic compounds. The contents of phenolic acids were quantified by the HPLC analysis. The sum of free phenolic acids, those liberated from soluble esters and those liberated from soluble glycosides, was higher for coloured seed coat (78.53 g per g dry matter) than for the white seed coat (17.17 g/g dry matter). Protocatechuic, gentisic and vanillic acids were found dominant in the coloured seed coat, while ferulic and coumaric acids in the white seed coat. The content of condensed tannins was 1560 mg of catechin equivalent/100 g of coloured seed coat as determined by a vanillin assay. No condensed tannins were detected in the white seed coat. The antioxidant activity of extracts was measured by the oxidation of phosphatidylcholine to hydroxyperoxidephosphatidyl choline in the liposome system. Strong antioxidant properties were observed in a crude tannin extract from the coloured seed coat. These properties were slightly changed after the seed coat was cooked in water for 30, 60 and 90 min.  

scholarly journals Valuable Components of Dried Pomaces of Chokeberry, Black Currant, Strawberry, Apple and Carrot as a Source of Natural Antioxidants and Nutraceuticals in the Animal Diet

2015 ◽  
Vol 15 (2) ◽  
pp. 475-491 ◽  
Author(s):  
Marek Pieszka ◽  
Piotr Gogol ◽  
Mariusz Pietras ◽  
Magdalena Pieszka
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Acids ◽  
Essential Fatty Acids ◽  
Antioxidant Properties ◽  
Natural Antioxidants ◽  
Crude Fibre ◽  
Black Currant ◽  
Bioactive Substances ◽  
Total Antioxidant ◽  
Potential Trap

Abstract The chemical analysis of dried pomace of chokeberry, apple, black currant, strawberries and carrot was performed to determine the composition and content of nutrients and bioactive substances, among others the content of vitamins, phenolic acids, anthocyanins, and essential fatty acids. The antioxidant properties were determined in the extracts of pomace by determining the total antioxidant potential (TRAP) and antioxidant activity against DPPH radical. Tested pomaces contained 12-15% protein, approximately 18-20% crude fibre, approximately 2.7-4.0% ether extract and 1.8-3.0% ash. The highest level of anthocyanins was found in chokeberry pomace, followed by black currant pomace and several times less in strawberries and apples. The content of phenolic acids ranged from 12.91 mg/100 g in black currants to 630.30 mg/100 g in dried chokeberries. In terms of vitamins the richest source of vitamin E was chokeberry pomace (152.3 mg/100 g), while most of the carotenoids were found in dried carrot (15.35 mg/100 g). The chain of antioxidant activity was as follows: black currant>chokeberry>apple>strawberry>carrot, while in terms of antioxidative capacity it was chokeberry>apple>black currant>strawberry>carrot.

scholarly journals Antioxidant and cytotoxic activities of Parabaena sagitatta Miers

2013 ◽  
Vol 41 (2) ◽  
pp. 155-158
Author(s):  
TM Quadery ◽  
F Islam ◽  
M Ahsan ◽  
CM Hasan
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
Phenolic Compounds ◽  
Brine Shrimp ◽  
Phenolic Content ◽  
Soluble Fraction ◽  
Total Phenolic ◽  
Cytotoxic Activities ◽  
Total Antioxidant Activity ◽  
Total Antioxidant

A methanolextract of the leaves of Parabaena sagitatta Miers and its petroleum ether, carbon tetrachloride, dichloromethane, ethylacetate and aqueous soluble partitionates were evaluated for antioxidant activity by 1,1-diphenyl-2-picrylhydrazyl (DPPH), Folin-Ciocalteau reagent and phosphomolybdenum total antioxidant assays by using butylated hydroxytolune (BHT) and ascorbic acid as standards. The dichloromethane soluble fraction demonstrated the presence of significant amount of phenolic compounds 61.06 ± 0.54 mg GAE/g of extract and also has moderate antioxidant activity IC50 50.62 ± 0.25 ?g/ml. A positive correlation (R2), 0.969 was observed between total phenolic content and total antioxidant activity of P. sagitatta. The general toxicity was determined by brine shrimp lethality bioassay where the dichloromethane LC50DOI: http://dx.doi.org/10.3329/bjb.v41i2.13441 Bangladesh J. Bot. 41(2): 155-158, 2012 (December)

Phenolic Compounds and Antioxidant Activity of Olea europaea L. Fruits and Leaves

2006 ◽  
Vol 12 (5) ◽  
pp. 385-395 ◽  
Author(s):  
S. Silva ◽  
L. Gomes ◽  
F. Leitão ◽  
A. V. Coelho ◽  
L. Vilas Boas
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Olive Tree ◽  
Total Phenolic ◽  
Total Antioxidant Activity ◽  
Total Antioxidant ◽  
Olive Seeds ◽  
Seed Extracts

Extracts of leaves, fruits and seeds of olive tree cultivars of Trás-os-Montes e Alto Douro (Portugal) were analysed by reverse phase HPLC with diode array detection and mass spectrometry (MS). This methodology allowed the identification of some common phenolic compounds, namely, verbascoside, rutin, luteolin-7-glucoside, oleuropein and hydroxytyrosol. Moreover the hyphenation of HPLC with MS enabled the identification of nüzhenide in olive seeds. An oleuropein glucoside was also detected in olive tree leaves. The total phenolic content was determined with the Folin Denis reagent and the total antioxidant activity with the ABTS method. There is a correlation between total antioxidant activity and total phenolic content with the exception of the seed extracts analysed. The apparent high antioxidant activity of seed extracts may be due to nüzhenide, a secoiridoid that is the major phenolic component of olive seeds. These results suggest a possible application of olive seeds as sources of natural antioxidants.

scholarly journals Red grape skin extract and oat β-glucan in shortbread cookies: technological and nutritional evaluation

2021 ◽  
Author(s):  
Arkadiusz Szpicer ◽  
Anna Onopiuk ◽  
Iwona Wojtasik-Kalinowska ◽  
Andrzej Półtorak
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Total Phenolic ◽  
Skin Extract ◽  
Total Antioxidant Activity ◽  
Grape Skin ◽  
Total Antioxidant ◽  
Red Grape ◽  
Grape Skin Extract

AbstractConsumers are increasingly interested in innovative products enriched with nutrients that counteract the development of civilisation-associated diseases. Thus, the development of new functional nutrient-enriched food products that meet consumer needs is therefore necessary. The aims of this study were to develop a novel shortbread cookie product by addition of red grape skin extract and oat β-glucan and to evaluate the influence of these modifications on physico‐chemical properties and consumer’s acceptance. The red grape skin extract used in this product is a source of polyphenols which are beneficial for human health and extend product shelf life. β-glucan is a soluble fraction of dietary fibre that helps to lower reduce blood cholesterol and glycemic levels. The influence of grape skin extract, β-glucan and a combination of both on the β-glucan content, colour and texture parameters, thermal properties, total antioxidant activity, total phenolic content, volatile compounds profile and sensory properties of shortbread cookies was analysed. Product with modified formulations had higher total antioxidant activity, total phenolic content and were was more thermally stable than control samples. The obtained innovative functional products were characterized by an increased content of oat β-glucan, which is desirable from a nutritional point of view. The DSC measurements showed higher oxidative stability of cookies enriched with β-glucan and red grape skin extract. The additives caused significant changes in the colour and profile of volatile compounds of the finished final product but did not affect the sensory acceptance among consumers. The use of these additives represents a development in food technology that may be valuable in the food industry to increase the nutritional value and extend the shelf shelf-life of bakery products.

scholarly journals Phenolic profile and antioxidant activity of the selected edible flowers grown in Poland

2021 ◽  
Vol 25 (2) ◽  
pp. 185-200
Author(s):  
Robert Socha ◽  
Justyna Kałwik ◽  
Lesław Juszczak
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Acids ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Dry Weight ◽  
Total Phenolic ◽  
Phenolic Profile ◽  
Methanolic Extracts ◽  
Total Antioxidant ◽  
Reducing Activity

Abstract The purpose of this study was to determine phenolic profile and antioxidant activity of the selected edible flowers grown in Poland. A significant variation was observed in the both antioxidant activity and total phenolic content. Marigold flowers were characterized by the highest total phenolic content (89.22 mg GEA/g dry weight). In turn, begonia flowers exhibited the highest total flavonoids and phenolic acids content (21.96 mg QE/g dry weight, and 8.60 mg CAE/g dry weight, respectively). Taking into account the type of flowers, begonia and marigold flowers were the richest in phenolic acids. Caffeic and p-coumaric acids were the most frequent ones in the edible flowers grown in Poland. While gallic and p-coumaric acids were the prevalent ones in terms of their content. The begonia and marigold flowers contained quercetin and kaempferol, while hesperetin and naringenin were present in the chives flowers. The marigold flowers were characterized by a particularly high content of quercetin, and also exhibited the highest total antioxidant activity. The methanolic extracts of marigold and begonia flowers were characterized by the highest antioxidant activity, reducing activity, as well as the highest ability to neutralize free radicals.

scholarly journals Physicochemical properties and antioxidant activity of two varieties of apple cultivated in different areas in Morocco

2020 ◽  
Vol 10 (4) ◽  
pp. 371
Author(s):  
Driss Oussaid ◽  
Ismail Mansouri ◽  
Hassan Laaroussi ◽  
Badiaa Lyoussi ◽  
Ilham El Aarabi
Keyword(s):  
Antioxidant Activity ◽  
Physicochemical Properties ◽  
Physicochemical Parameters ◽  
Total Antioxidant Activity ◽  
Flavonoid Content ◽  
Polyphenol Content ◽  
Bioactive Substances ◽  
Golden Delicious ◽  
Total Antioxidant ◽  
Apple Cultivars

<p class="Mabstract">This study aimed to assess the effect of climate on the organoleptic qualities and phytochemical properties of two varieties of apple (<em>Golden delicious</em> (GD) and <em>Red delicious</em> (RD)) collected from different regions in Morocco. These two varieties of apple were examined for their bioactive compounds composition and antioxidant activity (in juice and different extracts). For physicochemical parameters, the highest acidity was observed in <em>Golden delicious</em> collected from station 1, which was the juiciest sample. Bioactive substances content was dependent on variety and station, while the highest polyphenol content was observed in <em>Golden delicious</em> collected from station 2 (135.41±6.66 mg GAE/100 mL of juice) and most top flavonoid content was observed in <em>Red delicious</em> collected from station 1 (7.43±0.13 mg QE/100 mL of juice). Furthermore, <em>Red delicious</em> collected from station 2 was the most effective in chelating the radical DPPH (IC50% = 0.92±0.01 µL of juice), and <em>Red delicious</em> collected from station 1 has the highest total antioxidant activity (2.47±0.02 mg AAE/100 mL of juice). The present work showed that the significant diversity in the different studied parameters of the apple cultivars was closely linked with the characteristics of the station, such as geography and climate.</p>

scholarly journals Development and evaluation of nutritionally enhanced potato rice papads (Indian cookie)

2015 ◽  
Vol 7 (1) ◽  
pp. 242-248
Author(s):  
Sukhpreet Kaur ◽  
Poonam Aggarwal
Keyword(s):  
Antioxidant Activity ◽  
Solanum Tuberosum L ◽  
Radical Scavenging Activity ◽  
Radical Scavenging ◽  
Life Quality ◽  
Total Antioxidant Activity ◽  
Oil Uptake ◽  
Phytochemical Content ◽  
Overall Acceptability ◽  
Total Antioxidant

The present study was carried out to develop papads (Indian cookie) from potato (Solanum tuberosum L.) and rice (Oryza sativa) blends and to analyze them for organoleptic, physicochemical, phytochemical and shelf life quality. Two processing cultivars (Kufri Chipsona-1, Kufri Chandramukhi) and one commonly grown cultivar (Kufri Pukhraj) were evaluated for processing into papad. Based on preliminary sensory trails, papads with boiled potato mash (60%) and gelatinized rice (30%) level of supplementation were found to be most acceptable and these papads were subjected to nutritional evaluation. Results were compared with rice papads (control). Protein content and yield was significantly (p<0.05) higher in control papads compared to potato supplemented papads. Oil uptake significantly (p<0.05) increased on supplementation with potato. Bioactive compounds including ascorbic acid, totalphenolics and total antioxidant activity measured as DPPH radical scavenging activity increased significantly (p<0.05) on incorporation of potato. Between the cultivars, papads enriched with Kufri Pukhraj, a table variety which is considered unfit for processing, displayed the highest phytochemical content and total antioxidant activity. Sensory evaluation indicated higher overall acceptability scores of potato enriched papads compared to control. During storage of papads at room temperature for up to 3 months, significant (p<0.05) changes in the moisture content, phytochemical content and antioxidant activity were observed. Storage studies showed that the potato supplemented papads can be stored safely for 3 months of storage at ambient temperature.

Impact of Two Different Methods of Extraction on Total Antioxidant Activity and Phenolic Content in an Uncommon Plant (Sansevieria trifasciata) and Commonly Consumed Fruits

2021 ◽  
Vol 27 (1) ◽  
Author(s):  
Vandana Dohre ◽  
Surabhi Yadav
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolic Content ◽  
Phenolic Content ◽  
Fruit Juices ◽  
Total Phenolic ◽  
Strong Positive Correlation ◽  
Total Antioxidant Activity ◽  
Fruit Extracts ◽  
Indian Gooseberry ◽  
Total Antioxidant

To determine and compare total antioxidant activity (TAA) and phenolic content (TPC) of Sansevieria trifasciata leaves’ extract with different fruits’ extract (Guava, Indian plum and Indian gooseberry) and fruit juices (Pomelo, Orange, and Beetroot) on the basis of two extraction methods, total phenolic content and antioxidant activity were analysed by Folin-Ciocalteu’s and Phosphomolybdate assay, respectively and expressed as equivalent to catechin. The extraction process of selected samples was done by using both decoction extraction method (DEM) and microwave-assisted method (MAE) of water solvent. Among both techniques of extractions, MAE exhibited significantly higher TPC and TAA than DEM. Compared to Sansevieria trifasciata plant extracts, there was a strong positive correlation coefficient (á<0.05) between the total phenolic contents and antioxidant activities of different fruit juices and fruit extracts in both the classical (DEM) and modern (MAE) techniques. Sansevieria trifasciata possesses a considerable amount of phenolic compounds and antioxidant activity concerning different fruit juices and fruit extracts which directly associated with health-promoting potential and appears as possible drug development for antioxidant. Among all extract and juices, Indian gooseberry possesses the greatest total phenolic content and antioxidant activity due to its higher TPC.

Sign in / Sign up

Export Citation Format

Share Document