scholarly journals Effect of Air-Frying on the Bioactive Properties of Eggplant (Solanum melongena L.)

Processes ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 435
Author(s):  
Ahmad Mohammad Salamatullah ◽  
Mohammed Asif Ahmed ◽  
Mohammed Saeed Alkaltham ◽  
Khizar Hayat ◽  
Najla Sulaiman Aloumi ◽  
...  
Keyword(s):  
Solanum Melongena ◽  
Reducing Power ◽  
Dry Weight ◽  
Cooking Methods ◽  
Total Polyphenol ◽  
Bioactive Properties ◽  
Different Temperatures ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging ◽  
Gallic Acid Equivalent

The eggplant is an important vegetable that is used all over the world and it contains valuable bioactive properties. Cooking methods affect the nutritional value as well as the functional characteristics of vegetables. This study investigated the effect of air-frying at different temperatures and the extraction solvents on the bioactive properties of eggplant. The eggplant air-fried for 25 min and extracted with 50% ethanol exhibited the highest total flavonoid content (35.10 mg catechin equivalent per gram dry weight), while its total polyphenol content was found as 87.81 mg gallic acid equivalent per gram dry weight. The uncooked sample exhibited the lowest DPPH scavenging (IC50: 422.12 mg/mL reducing power: 0.914), while the highest DPPH scavenging activity (IC50: 2.87 mg/mL; reducing power: 0.936) was recorded for the sample air-fried for 25 min and extracted with 50% ethanol. The highest amount of tannic acid was found in medium-cooked eggplant, while chlorogenic acid was the highest in the high-cooked sample. These results might be helpful for functional food processors.

scholarly journals Antioxidant activity of wheat and buckwheat flours

2010 ◽  
pp. 59-68 ◽  
Author(s):  
Ivana Sedej ◽  
Marijana Sakac ◽  
Aleksandra Misan ◽  
Anamarija Mandic
Keyword(s):  
Total Phenolics ◽  
Antioxidant Activities ◽  
Reducing Power ◽  
Chelating Activity ◽  
Ethanolic Extracts ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging ◽  
Wheat Flours ◽  
Gallic Acid Equivalent ◽  
Buckwheat Flour

Antioxidative activities of wheat flours (type 500 and wholegrain) and buckwheat flours (light and wholegrain) were tested using 1,1-diphenyl-2-picrylhydrazyl (DPPH?)-scavenging activity, reducing power and chelating activity on Fe2+. Also, the content of the total phenolics of ethanolic extracts was estimated. Polyphenolics content (expressed as gallic acid equivalent, GAE) in wheat flours varied between 37.1 and 137.2 ?g GAE/g extract, while its content in buckwheat flour were at least four time higher and ranged between 476.3 and 618.9?g GAE/g extract. Ethanolic extracts of buckwheat flours exhibited higher antioxidant activities in all the assays, except for chelating activity. Regarding all the obtained results, it can be concluded that bakery products produced with buckwheat flour could be regarded as potential functional foods.

Characterization of non polar-polar solvent extracts from some tea plantation shade tree leaves with special reference to antioxidant and antibacterial activities

2020 ◽  
pp. 15-21
Author(s):  
Arindam Ghosh ◽  
Soumya Majumder ◽  
Sumedha Saha ◽  
Malay Bhattacharya
Keyword(s):  
Cardiac Glycosides ◽  
Polar Solvent ◽  
Reducing Power ◽  
Scavenging Activity ◽  
Shade Trees ◽  
Crude Fibre ◽  
Shade Tree ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging

Beneficial properties of shade trees of tea plantations other than their medicinal properties have been extensively studied. This research was initiated to explore the properties of some shade trees with special emphasis on their antioxidant and antibacterial properties. Leaves from shade tree like Dalbergia sissoo (DS), Cassia siamea (CS), Derris robusta (DR), Leucaena leucocephala (LL), Acacia lenticularis (AL) and Melia azedarach (MA) were used for the study. Characterization of shade tree leaves by determination of moisture, crude fibre and ash content and tests of non polar – polar solvent extracts for steroid, tannins, cardiac glycosides and coumarin, free radical scavenging, ferric reducing power, NO scavenging activities, quantification of Flavonoids and antibacterial activity were conducted. The average moisture, crude fibre and ash percentage of shade tree plants were found to be 62.95, 11.28 and 1.86 respectively. Methanol, ethanol, acetone and ethyl acetate respectively proved to be the most potent solvent for various phytochemical extractions as it gave positive results for tests like tannin, steroid, cardiac glycosides and coumarin. AL (91.46%), DR (92.69%), LL (94.32%) and MA (93.34%) leaf extracts showed a high level of DPPH scavenging activity in their water extracts. In DS (88.11%) and CS (83.23%) maximum DPPH scavenging activity was observed in Diethyl ether and Methanol extracts respectively.  Acetone extracts were more active than the water extracts in exhibiting ferric reducing power and NO scavenging activity. Summation of the quantity revealed that DS showed maximum presence of flavonoids and acetone as most potential for isolation of flavonoids. The decreasing order of summative antibacterial activity was recorded in DS, followed by CS, DR, AL, MA and LL. Chloroform showed the highest summative inhibition zone followed by ethanol, ethyl acetate, diethyl ether, acetone, water,  hexane, benzene and methanol. The antioxidant and antibacterial potential of shade trees were established.

scholarly journals Comparative Study on the Nutritional and Antioxidant Components of Fruit Parts of Citrullus lanatus

2020 ◽  
pp. 39-51
Author(s):  
Stanley Kanayochukwu Nnenne ◽  
Kingsley Ikechukwu Ubaoji ◽  
Uchechukwu Chibuzo Ogbodo ◽  
Victor Henry Azubuike Enemor ◽  
Adebayo Afees Oladejo
Keyword(s):  
Citrullus Lanatus ◽  
Antioxidant Properties ◽  
Reducing Power ◽  
Proximate Analysis ◽  
Nutritional Composition ◽  
The People ◽  
Dpph Scavenging Activity ◽  
Student’S T ◽  
Dpph Scavenging ◽  
Student’S T Test

Aim: Citrullus lanatus is a fruit widely consumed for its pulp though incompletely, as its other parts (seed and rind) are discarded and may possibly offer bioactive compounds involved in ameliorating certain disease conditions. Hence, this study aimed at comparatively investigating the nutritional composition and antioxidant properties of the seed, pulp and rind of C. lanatus so as to inform the inclusion of these different parts into the fare of the people. Methodology: Standard analytical methods of Association of Official Analytical Chemists were used to determine proximate, phytochemical, vitamin, mineral and antioxidant aspects of the fruit parts. The results were analyzed using Student’s t-test at .05. Results: The proximate analysis showed a high moisture value in the pulp (93.34 +/- .82) followed by the rind (77.11 +/- 3.44) and the seed (10.00 +/- .48). High crude protein and fiber contents were both noted in the seed followed by the rind and pulp. Mineral determinations revealed potassium to be abundant in the rind (452.31mg/kg) than the seed (305.7mg/kg) and the pulp (100.5mg/kg), followed by calcium occurring more in the rind (292.61mg/kg) than in the pulp (257.21mg/kg) and seed (227.45mg/kg) and then manganese being the least concentrated among the minerals. The investigated phytochemical principles revealed the highest concentration of cardiac glycosides in the seed (14.82 +/- .66) than the rind (1.95 +/- 0.80) and pulp (1.10 +/- 0.17), followed by saponins occurring most in the rind (12.05 +/- 3.91) than the seed (10.17 +/- 0.63) and pulp (.13 +/- .01). The seed had the highest DPPH scavenging activity followed by the rind and pulp respectively. The seed also showed a higher reducing power and lipid peroxidation capacities than the other fruit parts suggesting a potent property for antioxidant activity in the fruit parts of C. lanatus. Conclusion: The findings imply that both seed and rind of C. lanatus can be good sources of nutritional, phytochemical and antioxidant components in addition to the pulp which is commonly consumed and these may be implicated in management of certain diseases with further evidential research.

scholarly journals Antioxidant Activity and Anti-Nutritional Factors in Acacia Nilotica Gum

2021 ◽  
Vol 11 (6) ◽  
pp. 42-51
Author(s):  
Kazi Layla Khaled ◽  
Rukshana Irani
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Properties ◽  
Nutritional Composition ◽  
Acacia Nilotica ◽  
Nutritional Factors ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging ◽  
Relationship Of ◽  
Gallic Acid Equivalent ◽  
Food Commodity

The rapidly growing civilization and economy need the judicious usage of floral and faunal heritage. Acacia nilotica (Family: Fabaceae) is a beneficial plant species and each part of it exhibits numerous biological and pharmacological effects. The gum exudates of Acacia nilotica trees are underutilized plant products that can be explored for their potential as a therapeutic and curative agent. Its nutritional composition, interaction with anti-nutritional factors and antioxidants can determine its utility as a food. The present investigation was aimed to estimate the anti-nutritional factors and antioxidant activity of Acacia nilotica gum. It also focused on establishing a relationship of the obtained data with the ethnomedicinal and pharmacological properties claimed in the literature. The analysis was carried out using standard methods and protocols involving spectrophotometric and gravimetric principles. The anti-nutritional components like tannin, trypsin inhibitor, phytate, oxalate, total saponin, steroidal saponins, alkaloid content of Acacia nilotica gum was found to be 0.2369±0.0354 g tannic acid equivalent/100 g, 0.0108±0.0037 TIU/mg, 156.3333±9.4516 mg/100 g, 132.5±28.3152mg/100 g, 12.7183±6.7788 mg diosgenin equivalent /g, 0.0705±0.01 mg diosgenin equivalent /g, 0.1333±0.0577 g/100 g respectively. The amounts of total phenols and flavonoids was determined to be 8.0033±2.7211 mg of gallic acid equivalent/g sample, 0.0458±0.0186 mg quercetin equivalent /g sample respectively with a significant DPPH Scavenging activity. The results indicate that the quantity of anti-nutritional factors in gum is within the range of the contents of anti-nutritional factors found in commonly consumed foods. The substantial presence of phenol, flavonoids and DPPH activity in the gum indicates the presence of high antioxidant properties. The presence of anti-nutritional factors and antioxidants in favourable levels can impart diverse physiological responses. The present study concluded that Acacia nilotica gum can be used as a nutritious food commodity with a plethora of recuperative activities.

scholarly journals Antioxidant Activity and Anti-Nutritional Factors in Acacia Nilotica Gum

2021 ◽  
Vol 11 (6) ◽  
pp. 42-51
Author(s):  
Layla Khaled Kazi ◽  
Rukshana Irani
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Properties ◽  
Nutritional Composition ◽  
Acacia Nilotica ◽  
Nutritional Factors ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging ◽  
Relationship Of ◽  
Gallic Acid Equivalent ◽  
Food Commodity

The rapidly growing civilization and economy need the judicious usage of floral and faunal heritage. Acacia nilotica (Family: Fabaceae) is a beneficial plant species and each part of it exhibits numerous biological and pharmacological effects. The gum exudates of Acacia nilotica trees are underutilized plant products that can be explored for their potential as a therapeutic and curative agent. Its nutritional composition, interaction with anti-nutritional factors and antioxidants can determine its utility as a food. The present investigation was aimed to estimate the anti-nutritional factors and antioxidant activity of Acacia nilotica gum. It also focused on establishing a relationship of the obtained data with the ethnomedicinal and pharmacological properties claimed in the literature. The analysis was carried out using standard methods and protocols involving spectrophotometric and gravimetric principles. The anti-nutritional components like tannin, trypsin inhibitor, phytate, oxalate, total saponin, steroidal saponins, alkaloid content of Acacia nilotica gum was found to be 0.2369±0.0354 g tannic acid equivalent/100 g, 0.0108±0.0037 TIU/mg, 156.3333±9.4516 mg/100 g, 132.5±28.3152mg/100 g, 12.7183±6.7788 mg diosgenin equivalent /g, 0.0705±0.01 mg diosgenin equivalent /g, 0.1333±0.0577 g/100 g respectively. The amounts of total phenols and flavonoids was determined to be 8.0033±2.7211 mg of gallic acid equivalent/g sample, 0.0458±0.0186 mg quercetin equivalent /g sample respectively with a significant DPPH Scavenging activity. The results indicate that the quantity of anti-nutritional factors in gum is within the range of the contents of anti-nutritional factors found in commonly consumed foods. The substantial presence of phenol, flavonoids and DPPH activity in the gum indicates the presence of high antioxidant properties. The presence of anti-nutritional factors and antioxidants in favourable levels can impart diverse physiological responses. The present study concluded that Acacia nilotica gum can be used as a nutritious food commodity with a plethora of recuperative activities.

scholarly journals PHYTOCHEMICAL IDENTIFICATION AND ANTIOXIDANT ACTIVITY OF PASSIFLORA FOETIDA FRUITS AND LEAVES EXTRACTS: A COMPARATIVE STUDY

2020 ◽  
pp. 55-58 ◽  
Author(s):  
YOHANES TANDORO ◽  
PAINI SRI WIDYAWATI ◽  
TARSISIUS DWI WIBAWA BUDIANTA ◽  
GRACE SUMARGO
Keyword(s):  
Antioxidant Activity ◽  
Cardiac Glycosides ◽  
Reducing Power ◽  
Total Phenol ◽  
Total Flavonoids ◽  
Scavenging Activity ◽  
Phytochemical Compounds ◽  
Dpph Scavenging Activity ◽  
Passiflora Foetida ◽  
Dpph Scavenging

Objective: The objective of this study was to compare the phytochemical composition and antioxidant activity of Passiflora foetida fruits and leaves extract. Methods: The parameters observed in this study were phytochemical compounds including alkaloid, flavonoid, phenolic, sterol, triterpenoid, saponin, tannin, and cardiac glycoside, total phenolic content Folin Ciocalteu method is based on reduction of Folin Ciocalteu reagent in alkaline medium; the metal complex produced measured at λmax: 760 nm; total flavonoids content with AlCl3 Colorimetric method based on complex formation of AlCl3 and flavonoid content in alkaline medium, the AlCl3-flavonoid complex produced measured at λmax: 510 nm; free radical DPPH scavenging activity; and ferric reducing power based on reduction of Fe3+ion into Fe2+ion that reacted with FeCl3 to form a ferric-ferrous complex that measured at λmax: 700 nm. Results: Passiflora leaves extract has phytochemical compound such as alkaloids, phenolics, flavonoids, saponins, and cardiac glycosides, total phenol was 22.92±0.18 mg GAE/g sample dry base, total flavonoid was 7.01±0.10 mg CE/g sample dry base, DPPH scavenging activity was 2.77±0.02 mg GAE/g sample dry base and ferric reducing power was 3.20±0.04 mg GAE/g sample dry base meanwhile Passiflora fruits extract had phytochemical compounds such as alkaloid, phenolic, flavonoids, cardiac glycosides, total phenol was 6.53±1.02 mg GAE/g sample dry base, total flavonoids were 1.56±0.27 mg CE/g sample dry base, DPPH free radical scavenging activity was 1.00±0.15 mg GAE/g sample dry base, and ferric reducing power was 1.12±0.17 mg GAE/g sample dry base. Conclusion: Passiflora leaves extract has higher total phenol, total flavonoid and antioxidant activity measured by DPPH scavenging activity and ferric reducing power value compared with Passiflora fruits extract.

scholarly journals Effects of Water Quality on Dissolution of Yerba Mate Extract Powders

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Wen-Ying Huang ◽  
Pei-Chi Lee ◽  
Jaw-Cherng Hsu ◽  
Yu-Ru Lin ◽  
Hui-Ju Chen ◽  
...  
Keyword(s):  
Antioxidant Activities ◽  
Tap Water ◽  
Reducing Power ◽  
Water Sources ◽  
Total Phenol Content ◽  
Yerba Mate ◽  
Scavenging Capacity ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging ◽  
Mate Tea

Yerba mate tea is known as one of the most popular nonalcoholic beverages favoured by South Americans due to its nutrition facts and medicinal properties. The processing of yerba mate tea is found to affect the properties of its final forms. This study presents an investigation into the effects of water sources on the dissolution of yerba mate extract powders. Comparisons were conducted between yerba mate teas prepared by dissolving yerba mate extract powders into tap water and deionized water. Topics to be explored in this work are the major compositions and antioxidant activities, including total phenol content, reducing power, DPPH scavenging activity, and ABTS+• scavenging capacity. It is indicated that there is little difference for antioxidant activities and major constituents of yerba mate teas between both water sources. However, a deeper color is seen in the tap water case, resulting from the reaction between tannic acid and ions. This research finding can be treated as a way to benefit the yerba mate tea processing for applications.

scholarly journals Ganoderma lucidum Metanolik Ekstraktının Fitotoksik Etkilerinin ve Antioksidan Potansiyelinin Araştırılması

2016 ◽  
Vol 4 (3) ◽  
pp. 163 ◽  
Author(s):  
Fuat Bozok ◽  
Tülin Eker ◽  
Gökhan Sezer ◽  
Adnan Bozdoğan ◽  
Hasan Hüseyin Doğan ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Ganoderma Lucidum ◽  
Methanolic Extract ◽  
Antioxidant Activities ◽  
Reducing Power ◽  
Scavenging Activity ◽  
Phytotoxic Effect ◽  
Dpph Scavenging Activity ◽  
Allelopathic Effects ◽  
Dpph Scavenging

The aim of this study is to reveal allelopathic effects and antioxidant activities of methanolic extract of Ganoderma lucidum in Zorkun plateau (Osmaniye). It was determined that methanolic extract of G. lucidum has significantly phytotoxic effect by increasing the doses (1, 2, 4, 8 mg/mL) on Hordeum vulgare and Triticum aestivum. Total phenol and flavonoid amounts of G. lucidum were 114.55 mg/kg and 8.95 mg/kg, respectively. 2,2-diphenyl-1-picrylhydrazyl (DPPH), scavenging activity (60%, 91% and 92%), reducing power (0.83, 1.43 and 2.23 Abs), and nitric oxide (NO) scavenging activity (48%, 55% and 70%) of this mushroom at the different concentrations (1.25, 2.5 and 5 mg/mL) were determined, respectively. However, H2O2 scavenging activity of the different concentrations (0.0156-0.125 mg/mL) was found as 18%, 56%, 60% and 86%, respectively. Based on these findings, it can suggest that G. lucidum methanolic extract has significantly phytotoxic effect and antioxidant activity. The present study is the first report on the phytotoxic effects and antioxidant activities of G. lucidum which consumed and collected from Amanos Mountains.

scholarly journals Antioxidant activity of Dianthus chinensis flowers processed by ionizing radiation

2019 ◽  
Vol 7 (2A) ◽  
Author(s):  
Amanda Cristina Ramos Koike
Keyword(s):  
Antioxidant Activity ◽  
Total Phenolics ◽  
Antioxidant Properties ◽  
Reducing Power ◽  
Bioactive Components ◽  
Irradiation Treatment ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging ◽  
Β Carotene

The edible flowers are increasingly used in culinary preparations, which require new approaches to improve their conservation and safety. Irradiation treatment is safe and an effective alternative for food conservation. Indeed, it can also guarantee food quality, increasing shelf-life and disinfestation of it. This technology gives us a versatile way to get good quality food, reducing post-harvest losses. Dianthus chinensis flowers, popularly known as Chinese pink, are widely used in culinary preparations, being also acknowledged for their bioactive components and antioxidant properties. The purpose of this study was to evaluate the antioxidant activity of D. chinensis flowers submitted to electron beam and gamma irradiation at 0, 0.5, 0.8 and 1 kGy. The antioxidant properties were evaluated through 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging activity, reducing power and β-carotene bleaching inhibition assays. Total phenolics were also determined by the Folin-Ciocalteu assay. The antioxidant activity was higher for irradiated samples, especially those treated with 0.8 and 1 kGy, independently of the radiation source, which showed the highest capacity to inhibit β-carotene bleaching. Accordingly, the applied irradiation treatments seemed to represent feasible technology to preserve the quality of edible flower petals, being able to improve the antioxidant activity

scholarly journals Chemical composition and antioxidant activity of three species of Cornukaempferia in Thailand

2021 ◽  
Vol 22 (9) ◽  
Author(s):  
THEERAPHAN CHUMROENPHAT ◽  
Surapon Saensouk ◽  
PIYAPORN SAENSOUK
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Antioxidant Activities ◽  
Dry Weight ◽  
Total Phenolic ◽  
Antioxidant Power ◽  
Plant Parts ◽  
Ferric Reducing Antioxidant Power ◽  
Dpph Scavenging Activity ◽  
Dpph Scavenging

Abstract. Chumroenphat T, Saensouk S, Saensouk P. 2021. Chemical composition and antioxidant activity of three species of Cornukaempferia in Thailand. Biodiversitas 22: 4036-4044. Genus Cornukaempferia (Zingiberaceae) were used as medicinal plants in Thailand. Cornukaempferia has never been reported the chemical compounds and antioxidant activity before. This study was designed to identify the chemical composition and antioxidant activities in root, rhizome, stem, and leaves of Cornukaempferia aurantiflora, C. larsenii, and C. longipetiolata. DPPH scavenging activity and Ferric reducing antioxidant power (FRAP) assays assessed the chemical composition and antioxidant activity. The results showed that total phenolic content (TPC) and total flavonoid content (TFC) found different plant parts obtained in this study were in the order of root>rhizomes>leaves>?stems. The C. aurantiflora had a high TPC of 416.39 mg GAE/g dry weight, while individual phenolics, such as vanillic acid at 256.90 mg/g dry weight, showed high contents in the leaf part. For C. larsenii,  TFC and individual flavonoids, such as catechin, have high 62.52 and 56.47 mg/100g dry weight values in the roots, respectively. The antioxidant activities in different species of different plant parts (DPPH: root>leaves?> rhizomes?>?stems; FRAP: leaves?>root>?rhizomes?>?stems). The genus Cornukaempferia is a rich source of bioactive compounds and antioxidant activity. Therefore, the genus Cornukaempferia will be used as medicine and food to produce products with health benefits in the future.

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