scholarly journals EFFECT OF DRYING CONDITIONS AND EXTRACTION SOLVENTS ON TOTAL PHENOLIC COMPOUNDS AND ANTIOXIDANT PROPERTIES OF MANGO SEED KERNEL EXTRACTS

2011 ◽  
Vol 2 (4) ◽  
pp. 213-223
Author(s):  
A. Mehriz ◽  
M. Azzam ◽  
N. Youniss ◽  
S. Osman
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Properties ◽  
Total Phenolic ◽  
Seed Kernel ◽  
Total Phenolic Compounds ◽  
Mango Seed Kernel ◽  
Extraction Solvents ◽  
Mango Seed ◽  
Drying Conditions

scholarly journals Characterization of two Moroccan watermelon seeds oil varieties by three different extraction methods

OCL ◽  
2020 ◽  
Vol 27 ◽  
pp. 13
Author(s):  
Ihssane Ouassor ◽  
Younes Aqil ◽  
Walid Belmaghraoui ◽  
Souad El Hajjaji
Keyword(s):  
Fatty Acids ◽  
Phenolic Compounds ◽  
Unsaturated Fatty Acids ◽  
Citrullus Lanatus ◽  
Antioxidant Properties ◽  
Total Phenolic ◽  
Seed Oils ◽  
Total Phenolic Compounds ◽  
Ultrasound Assisted Extraction ◽  
Soxhlet Apparatus

The purpose of this study is to assess and evaluate the physicochemical properties of the seed oils of two Moroccan varieties of watermelon “Citrullus lanatus” extracted by three different techniques, a mechanical process using cold press, and two chemical processes using a Soxhlet apparatus and a sonotrode ultrasound assisted extraction (UAE) using n-hexane. The total phenolic compounds (TPC) and antioxidant properties against the DPPH radicals (2,2-diphenyl-1-picrylhydrazyl) were also studied. The seed oils of both varieties of watermelon exhibited high concentrations of unsaturated fatty acids with the predominance of linoleic and oleic fatty acids. The primary sterol was β-sitosterol, and high levels of total tocopherols were observed. Ɣ-tocopherol was the predominant tocopherol in all tested oils. The Citrullus lanatus var. lanatus variety seeds oil exhibited the highest TPC value (89.5 ± 0.06 mg EGA/100 g; EGA: gallic acid equivalent), with 82.4 ± 0.03% DPPH free radical inhibition efficiency. Nevertheless, all tested seeds oils showed a significant amount of total phenolic compounds and a good inhibition against DPPH radicals ranging from 51.1 ± 0.1% to 84.8 ± 0.04%. In addition, the influence of the ultrasonic extraction parameters was studied using two different solvents (n-hexane and the methanol-chloroform mixture), with different particle sizes (500–300 µm), duration (10 and 20 minutes), cycle (1–0.5), amplitude (80–100%) and solvent/seed ratios (1:5 and 1:10), and the seed roasting parameter was also studied. The oil yield was mainly affected by the extraction solvent, then the solvent/seed ratio and the duration, respectively.

scholarly journals Effect of Extraction Solvents and Drying Conditions on Total Phenolic Content and Antioxidant Properties of Watermelon Rind Powder

2018 ◽  
Vol 47 (1) ◽  
pp. 99-107 ◽  
Author(s):  
Lee-Hoon Ho ◽  
Nor Fadhilah Ramli ◽  
Thuan-Chew Tan ◽  
Norlia Muhamad ◽  
Mohd Nizam Haron
Keyword(s):  
Total Phenolic Content ◽  
Phenolic Content ◽  
Antioxidant Properties ◽  
Total Phenolic ◽  
Watermelon Rind ◽  
Extraction Solvents ◽  
Drying Conditions

scholarly journals Effect of different extraction solvents on antioxidant properties of water lily (Nymphaeaceae antares) flower petal and stamen

Food Research ◽  
2021 ◽  
Vol 5 (3) ◽  
pp. 359-368
Author(s):  
Z. Mohd Zin ◽  
A.Z.M. Sanuri ◽  
N. Bashah ◽  
K. Ibrahim ◽  
H. Yahya ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Ethyl Acetate ◽  
Ethyl Acetate Extract ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Total Phenolic ◽  
Scavenging Activity ◽  
Water Lily ◽  
Antioxidative Properties ◽  
Extraction Solvents

Water lily (Nymphaeaceae antares) contains a vast array of phenolic compounds with important natural antioxidative properties that could inhibit the adverse effects of the reactive oxygen species produced in living things. These substances are complex in composition which requires a suitable extraction medium to exploit the phenolic compounds. This study was designed to determine the antioxidative properties in petal and stamen of water lily extracted using different extraction solvents namely ethyl acetate and 60% methanol. Antioxidant properties of the samples were determined using 2,2-diphenyl -1-picrylhydrazyl (DPPH) radical scavenging activity, ferric thiocyanate (FTC) method, thiobarbituric acid (TBA) test, total phenolic content (TPC), total flavonoid content (TFC) and total tannin content (TTC) along with individual flavonoids content using High Performance Liquid Chromatography (HPLC). The yield of extract was found to be the highest in petals extracted with 60% methanol (44.55±1.63%) while stamen extracted with ethyl acetate yielded the lowest (24.50±1.09%). In the DPPH inhibition method, petal extracted with ethyl acetate obtained the highest scavenging activity (89.15±3.62%). FTC analysis revealed that ethyl acetate extract of petal experienced the highest percentage inhibition (76.70±6.48%) while in TBA analysis ethyl acetate extract of stamen exhibited the highest percentage inhibition (70.78±1.39%). Flavonoids such as quercetin, kaempferol, rutin, gallic acid, catechin, epigallocatechin, p-coumaric acid and myricetin were found to be present in ethyl acetate and 60% methanol extracts of water lilies stamen and petal. The information from this study indicates that water lily petals and stamens may be integrated as a good source of nutrients in the food industry, the pharmaceutical industry. If the advantages of water lily are not used and integrated into everyday life for health benefits, it will be a massive waste of natural resources.

Campomanesia spp. native fruits as potential source of health-promoting compounds

2021 ◽  
Vol 37 ◽  
pp. e37053
Author(s):  
Silvani Verruck ◽  
Anildo Cunha Junior ◽  
Marcelo Maraschin ◽  
Nei Fronza ◽  
Jean Carlos Budke ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Properties ◽  
Scientific Data ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Potential Source ◽  
Health Promoting ◽  
Total Flavonoids Content ◽  
Bioactive Ingredients ◽  
Natural Preservatives

Campomanesia xanthocarpa var. littoralis, Campomanesia xanthocarpa (Berg), and Campomanesia eugenioides are native fruit plants found in Brazil. Due to the scarce number of controlled scientific studies comparing different native Campomanesia species, this study sought to determine their bioactive compounds and antioxidant properties. C. eugenioides proved to be a rich source of total phenolic compounds, also showing the best antioxidant capacity by the ABTS, DPPH and molybdenum reduction power methods. On the other hand, C. xanthocarpa var. littoralis showed the best results for total flavonoids content, and Iron(II) chelation power. The phenolic compounds contents present in C. eugenioides could be responsible for the best antioxidant activity. This study provides key scientific data regarding the use of valuable fruits from different edible Campomanesia species to produce bioactive ingredients, as well as natural preservatives for food products. Thus, our results contribute to the discovery of the potential application of these native Campomanesia Brazilian fruits, as a natural product with functional and antioxidant properties.

scholarly journals Optimization of Extraction Parameters of Polyphenols from Mango Seed Kernel through Response Surface Methodology

2020 ◽  
Vol 5 (8) ◽  
pp. 877-883
Author(s):  
Junior Franck Ekorong Akouan Anta ◽  
Dorothée Marcelle Biloa ◽  
K.S.M.S. Raghavarao
Keyword(s):  
Phenolic Compounds ◽  
Reducing Power ◽  
Extraction Yield ◽  
Agitation Speed ◽  
Extraction Time ◽  
Seed Kernel ◽  
Extraction Temperature ◽  
Mango Seed Kernel ◽  
Extraction Parameters ◽  
Mango Seed

Phenolic compounds constitute an essential part of the human diet, and are of considerable interest due to their antioxidant properties. The traditional maceration method has been used for the extraction of polyphenols from mango seed kernel (Mangifera indica L.). Highlight the effects of different extraction parameters is useful to optimize the process, as well as to predict the extraction yield within the experimental domain with enough precision and confidence. The purpose of this work is to probe the influence of extraction time, extraction temperature and agitation speed on the extraction yield of phenolic compounds, and the total reducing power of the extract. The Surface Methodology (RSM), using the Doehlert design, have been applied. Optimal values of extraction yield and total reducing power was 36.99 mg Gallic acid equivalent/g and 61.08 mg Ascorbic Acid Equivalent/g respectively. The optimal conditions are 60 minutes of extraction time, 68.7°C extraction temperature and 424 rpm for agitation speed. Under optimized conditions the experimental values well agreed with the values predicted by the model equations proposed.

scholarly journals Determination of Antioxidant Properties of 26 Chilean Honeys and a Mathematical Association Study with their Volatile Profile

2012 ◽  
Vol 7 (7) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Elizabeth Sánchez ◽  
Marisa Piovano ◽  
Erika Valdés ◽  
Manuel E. Young ◽  
Cristian A. Acevedo ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Radical Scavenging Activity ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Persea Americana ◽  
Total Phenolic ◽  
Volatile Profile ◽  
Total Phenolic Compounds ◽  
Latent Structures

Radical scavenging activity (RSA), antioxidant content (TEAC), total phenolic compounds content (TPCC) and volatile profile (VOCs) were measured in 26 honeys obtained from the Valparaíso Region (Chile). Persea americana honey was the most interesting sample according to these evaluated parameters. A Projection to Latent Structures (PLS) based algorithm was used to model the possible relationship between antioxidant activity, total phenolic compounds content and volatile profile. Concerning the volatile profile, only nine volatile compounds, of a total of fifty, showed dependence on antioxidant activity and total phenolic compounds content.

scholarly journals Antioxidant activity of aqueous and alcohol extracts of Salvia leriifolia L. and Linum usitalissmum L. subjected to a pulsed electric field

2020 ◽  
pp. 186-195
Author(s):  
Shohreh Arab Shirazi ◽  
Ahmad Pedram Nia ◽  
Mohammad Reza Saeidi Asl ◽  
Fariba Naghipour ◽  
Hamid Tavakolipour
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Electric Field ◽  
Antioxidant Activities ◽  
Pulse Electric Field ◽  
Antioxidant Properties ◽  
Pulsed Electric Field ◽  
Total Phenolic ◽  
Total Phenolic Compounds ◽  
Positive Effects

Introduction. More attention has been paid in recent decades to extracts and essential oils from various plants as natural antioxidant sources due to their positive effects on food oxidation reactions. Our study aimed to compare the antioxidant activity of aqueous and alcoholic extracts from Salvia leriifolia L. and Linum usitalissmum L.The extracts were subjected to a pulsed electric field with intensities of zero (without pretreatment), 3 and 6 kV·cm–1, and a constant pulse number of 30. For this purpose, parameters such as total phenolic compounds and antioxidant activity were investigated by DPPH and TEAC methods. Results and discussion. Our results showed that a higher intensity of a pulsed electric field pretreatment and the use of an alcoholic solvent significantly raised total phenolic compounds in the extracts and their antioxidant activity at a 95% confidence level. We found significant effects of the plant source (Linum usitalissmum and Salvia leriifolia), pretreatment (pulse electric field at intensities of 0.3 and 6 kV·cm–1), and a solvent (aqueous and alcohol) on the extracts’ antioxidant activity (P < 0.05). In addition, there was a significant correlation between the results of the DPPH and the TEAC antioxidant activities (P < 0.01 and r = 0.932). Conclusion. The total antioxidant activity (based on both TEAC and DPPH methods) and total phenolic compounds extracted from Salvia leriifolia were higher than those from Linum usitalissmum (P < 0.05). Based on the results, the extract obtained from Salvia leriifolia with an alcoholic solvent and a pulsed electric field pretreatment (at 6 kV·cm–1 and 30 pulses) was selected as possessing desired antioxidant properties.

scholarly journals Mango Seed Kernel From Cameroon Savannah: Characterization And Antioxidant Potential

2020 ◽  
Vol 2 (4) ◽  
Author(s):  
Junior Franck Ekorong Akouan Anta ◽  
Gaston Zomegni
Keyword(s):  
Oil Content ◽  
Sugar Content ◽  
Antioxidant Properties ◽  
Polyphenolic Compounds ◽  
Total Sugar ◽  
Seed Kernel ◽  
Total Sugar Content ◽  
Mango Seed Kernel ◽  
Mango Seed ◽  
Phenolics Compounds

The aim of the present study is to characterize mango seed kernel of some varieties from the Cameroon savannah, to evaluate their potential uses. The results have shown a total sugar content ranging from 38.81% (Indécinard) to 67.33% (Brook), oil content, from 6.27% (Brook) to 10.62% (Kent), and proteins 3.94% (Local Maroua) to 6.09% (Kent). Uses as feedings or substitution in breadmaking and bakery is possible like some authors have shown. Phenolics compounds content and antioxidant activity have also been assessed and the results are promising for a valorisation of that aspect. Similar varieties were grouped in the respect of their polyphenolic compounds and antioxidant properties.

Sign in / Sign up

Export Citation Format

Share Document