scholarly journals Effects of nano-ferric oxide on quality, quantity and antioxidant properties of essential oil components in Carum copticum (L.) Link

2018 ◽  
Vol 44 (3) ◽  
pp. 367-372 ◽  
Author(s):  
Mohsen Kazemi
Keyword(s):  
Ferric Oxide ◽  
Antioxidant Properties ◽  
Reducing Power ◽  
Antioxidant Compounds ◽  
Flowering Stage ◽  
Carum Copticum ◽  
Bleaching Test ◽  
Oil Components ◽  
Limonene Oxide ◽  
Β Carotene

The effect of exogenous application of nano-ferric oxide (50 and 100 mg/l) in early flowering stage on components of essential oils (EOs) of Carum copticum (L.) Link was evaluated. EO extracted by hydrodistillation from Iranian C. copticum was characterized by means of GC/MS. The nano-ferric oxide application increased limonene, γ- terpinene, cis-limonene oxide, thymol, carvacrol and decreased α-thujene, α-pinene, β-pinene and p-cymene concentration. The EO was also subjected to evaluation for antioxidant properties. Thymol, γ-terpinene and carvacrol possessed the highest antioxidant properties among the major components. C. copticum EO exhibited a higher activity in each antioxidant system with a special attention to β-carotene bleaching test and reducing power. The TLC-bioautography screening and fractionation resulted in the separation of the main antioxidant compounds which were identified as thymol, γ-terpinene and carvacrol.

scholarly journals Preliminary Study on Pasta Samples Characterized in Antioxidant Compounds and Their Biological Activity on Kidney Cells

Nutrients ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 1131 ◽  
Author(s):  
Federico Di Marco ◽  
Francesco Trevisani ◽  
Pamela Vignolini ◽  
Silvia Urciuoli ◽  
Andrea Salonia ◽  
...  
Keyword(s):  
Indoleacetic Acid ◽  
Antioxidant Properties ◽  
Antioxidant Compounds ◽  
Kidney Cells ◽  
Hek 293 ◽  
293 Cells ◽  
High Concentrations ◽  
Β Carotene ◽  
Egg Pasta

Pasta is one of the basic foods of the Mediterranean diet and for this reason it was chosen for this study to evaluate its antioxidant properties. Three types of pasta were selected: buckwheat, rye and egg pasta. Qualitative–quantitative characterization analyses were carried out by HPLC-DAD to identify antioxidant compounds. The data showed the presence of carotenoids such as lutein and polyphenols such as indoleacetic acid, (carotenoids from 0.08 to 0.16 mg/100 g, polyphenols from 3.7 to 7.4 mg/100 g). To assess the effect of the detected metabolites, in vitro experimentation was carried out on kidney cells models: HEK-293 and MDCK. Standards of β-carotene, indoleacetic acid and caffeic acid, hydroalcoholic and carotenoid-enriched extracts from samples of pasta were tested in presence of antioxidant agent to determine viability variations. β-carotene and indoleacetic acid standards exerted a protective effect on HEK-293 cells while no effect was detected on MDCK. The concentrations tested are likely in the range of those reached in body after the consumption of a standard pasta meal. Carotenoid-enriched extracts and hydroalcoholic extracts showed different effects, observing rescues for rye pasta hydroalcoholic extract and buckwheat pasta carotenoid-enriched extract, while egg pasta showed milder dose depending effects assuming pro-oxidant behavior at high concentrations. The preliminary results suggest behaviors to be traced back to the whole phytocomplexes respect to single molecules and need further investigations.

scholarly journals Studies on drying characteristic, nutritional composition, and antioxidant properties of Stevia rebaudiana (Bertoni) leaves

2015 ◽  
Vol 29 (3) ◽  
pp. 323-331 ◽  
Author(s):  
Yolanda B. Moguel-Ordóñez ◽  
Diana L. Cabrera-Amaro ◽  
Maira R. Segura-Campos ◽  
Jorge C. Ruiz-Ruiz
Keyword(s):  
Antioxidant Properties ◽  
Reducing Power ◽  
Stevia Rebaudiana ◽  
Biological Properties ◽  
Nutritional Composition ◽  
Antioxidant Compounds ◽  
Drying Methods ◽  
Stevia Rebaudiana Bertoni ◽  
Trolox Equivalent ◽  
Drying Treatment

Abstract Drying characteristics of Stevia rebaudiana (Bertoni) leaves using radiation drying, convection drying, sun drying, and shade drying treatments were investigated in a convective type. Results for all treatments indicated that drying took place in the falling rate period. The chroma of the dried samples ranged between 29.66 and 23.85. Convection and shade drying samples were found better in colour and had the highest content of total pigments. The proximate and fibre composition were affected by the drying treatments. Extracts obtained from convection drying and shade drying leaves exhibited higher values of Trolox equivalent antioxidant capacities 416.89-423.64 mM mg−1 and ferric reducing power 85.19-87.97%. These extracts also showed ion chelating capacity 59.05-60.21% for Cu+2 and 55.05-59.11% for Fe+2. The results indicate that it is possible to select the drying treatment to obtain the best nutritional and biological properties. Convection drying and shade drying were the least aggressive treatments and leaf powders obtained by these drying methods could be used as sources of nutrients, fibre, and antioxidant compounds.

scholarly journals Antioxidant Properties Research of Various Types of Coffee

Food Industry ◽  
2020 ◽  
Vol 5 (4) ◽  
pp. 74-81
Author(s):  
Dinara Ignatova ◽  
Nadezhda Makarova
Keyword(s):  
Coffea Arabica ◽  
Antioxidant Properties ◽  
Reducing Power ◽  
Coffea Canephora ◽  
Raw Material ◽  
Antioxidant Compounds ◽  
Common Source ◽  
Coffee Arabica ◽  
Coffee Beans ◽  
Dpph Method

The article presents results of antioxidant compounds determination (total amount of phenolic compounds, total amount of flavonoids) and parameters of the antiradical activity (by the DPPH method) and reducing power (by the FRAP method) in different types of coffee beans depending on roasting degree (weak, medium, strong), coffee variety (Robusta and Arabica) and the importing country. The researchers used the products presented in the retail chains of Samara. The study purpose was to reveal a universal and most common source of functional substances with an antioxidant effect for the human body and use it both in its pure form and in combination with other products (BAS). According to the research results, Robusta coffee (Coffea Canephora) of medium roasting from Brazil has high indicators for all the conducted analyses and can be used as an additional source of antioxidant substances, and as a raw material for obtaining BAS. Coffee Arabica (Coffea Arabica) of medium roasting of Indonesian origin has the highest restoring power, and the highest content of phenols and flavonoids. Coffee Arabica (Coffea Arabica) of a strong degree of roasting from India has the lowest rates. All other types of coffee have average, slightly different results.

scholarly journals Antioxidant Capacity and the Correlation with Major Phenolic Compounds, Anthocyanin, and Tocopherol Content in Various Extracts from the Wild EdibleBoletus edulisMushroom

2013 ◽  
Vol 2013 ◽  
pp. 1-11 ◽  
Author(s):  
Emanuel Vamanu ◽  
Sultana Nita
Keyword(s):  
Antioxidant Capacity ◽  
Antioxidant Properties ◽  
Reducing Power ◽  
Ethanolic Extract ◽  
Edible Mushroom ◽  
Tocopherol Content ◽  
Hot Water ◽  
Antioxidant Compounds ◽  
Methanolic Extracts ◽  
Freeze Dried

Boletus edulisis a wild edible mushroom habitually consumed by rural populations. Ethanolic and methanolic extracts was obtained in cold and hot water from dried fruit bodies. The antioxidant activity of freeze-dried extracts fromB. eduliswere investigated using free radicals scavenging activity, reducing power, metal chelating effect, inhibition of lipid peroxidation, and the identification of antioxidant compounds. The levels of different compounds with antioxidant properties were higher in alcoholic extracts compared with aqueous extracts. Rosmarinic acid was the major phenolic compound, it being identified in a concentration between7±0.23and56±0.15 mg/100 g extract. A positive correlation between the content of total phenols, flavonoids, anthocyanins, and tocopherols, and the antioxidant capacity of the extracts was determined. The results showed that the ethanolic extract of Romanian wild mushroomB. edulisrepresents a natural source of functional compounds.

scholarly journals In vitro Cancer Cell Growth Inhibition and Antioxidant Activity of Bombax ceiba (Bombacaceae) Flower Extracts

2014 ◽  
Vol 9 (5) ◽  
pp. 1934578X1400900 ◽  
Author(s):  
Rosa Tundis ◽  
Khaled Rashed ◽  
Ataa Said ◽  
Francesco Menichini ◽  
Monica R. Loizzo
Keyword(s):  
Cancer Cell ◽  
Antiproliferative Activity ◽  
Human Cancer ◽  
Radical Scavenging Activity ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Dependent Manner ◽  
Bleaching Test ◽  
Β Carotene

The flowers of Bombax ceiba were investigated for their chemical composition, antioxidant effects and antiproliferative activity against seven human cancer cell lines. The antiproliferative responses of diethyl ether (DE) and light petroleum (PE) extracts were evaluated by sulforhodamine B (SRB) assay against MCF-7, HeLa, COR-L23, C32, A375, ACHN, and LNCaP cells in comparison with a human normal cell line, 142BR. Moreover, extracts were characterized by GC-MS analysis and tested for their antioxidant properties by different in vitro systems, namely DPPH, Fe-chelating activity and β-carotene bleaching test. Both PE and DE extracts showed the highest antiproliferative activity against human renal adenocarcinoma (ACHN) in a concentration-dependent manner. PE extract showed the highest radical scavenging activity against the DPPH radical, while DE extract was more active in the β-carotene bleaching test. The presence of β-sitosterol and some fatty acids may contribute to the bioactivity of B. ceiba flower extracts.

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, Antioxidant Properties and Anti-cholinesterase Activity of Cordia gilletii (Boraginaceae) Leaves Essential Oil

2011 ◽  
Vol 6 (2) ◽  
pp. 1934578X1100600 ◽  
Author(s):  
Marco Bonesi ◽  
Philippe N. Okusa ◽  
Rosa Tundis ◽  
Monica R. Loizzo ◽  
Federica Menichini ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Antioxidant Properties ◽  
In Vitro Tests ◽  
Bleaching Test ◽  
Total Oil ◽  
Β Carotene ◽  
Terpene Derivatives

This study aimed to investigate for the first time the chemical composition, the antioxidant properties and the acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) inhibitory activity of the essential oil from the leaves of Cordia gilletii De Wild (Boraginaceae). The essential oil, characterized by 23 constituents (90.1% of the total oil), was constituted by terpene derivatives (25.6%) and non-terpene derivatives (64.5%), among which aldehydes, fatty acids and alkanes were present with the percentage of 16.5%, 18.8% and 23.1%, respectively. The antioxidant activity of C. gilletii essential oil was screened by two in vitro tests: DPPH and β-carotene bleaching test. The essential oil revealed antioxidant activity with an IC50 value of 75.0 and 129.9 μg/mL on DPPH radical and β-carotene decoloration tests, respectively. Moreover, C. gilletii inhibited AChE enzyme with an IC50 value of 105.6 μg/mL.

scholarly journals Phytochemical Constituents, Antioxidant Activity, and Toxicity Assessment of the Aerial Part Extracts from the Infraspecific Taxa of Matthiola fruticulosa (Brassicaceae) Endemic to Sicily

Molecules ◽  
2021 ◽  
Vol 26 (14) ◽  
pp. 4114
Author(s):  
Maria Fernanda Taviano ◽  
Emilia Cavò ◽  
Vivienne Spadaro ◽  
Francesco Maria Raimondo ◽  
Vincenzo Musolino ◽  
...  
Keyword(s):  
Radical Scavenging Activity ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Artemia Salina ◽  
Toxicity Assessment ◽  
Antioxidant Compounds ◽  
Volatile Components ◽  
Infraspecific Taxa

In a project designed to investigate the specific and infraspecific taxa of Matthiola endemic to Sicily (Italy) as new potential sources of bioactive compounds in this work, the infraspecific taxa of Matthiola fruticulosa were studied, namely, subsp. fruticulosa and subsp. coronopifolia. HPLC–PDA/ESI–MS and SPME–GC/MS analyses of hydroalcoholic extracts obtained from the aerial parts of the two subspecies led to the detection of 51 phenolics and 61 volatile components, highlighting a quite different qualitative–quantitative profile. The antioxidant properties of the extracts were explored through in vitro methods: 1,1-diphenyl-2-picrylhydrazyl (DPPH), reducing power and Fe2+ chelating activity assays. The results of the antioxidant tests showed that the extracts possess a different antioxidant ability: particularly, the extract of M. fruticulosa subsp. fruticulosa exhibited higher radical scavenging activity than that of subsp. coronopifolia (IC50 = 1.25 ± 0.02 mg/mL and 2.86 ± 0.05 mg/mL), which in turn displayed better chelating properties (IC50 = 1.49 ± 0.01 mg/mL and 0.63 ± 0.01 mg/mL). Lastly, Artemia salina lethality bioassay was performed for toxicity assessment. The results of the bioassay showed lack of toxicity against brine shrimp larvae for both extracts. The data presented indicate the infraspecific taxa of M. fruticulosa as new and safe sources of antioxidant compounds.

scholarly journals Metabolic Profiling of Nine Mentha Species and Prediction of Their Antioxidant Properties Using Chemometrics

Molecules ◽  
2019 ◽  
Vol 24 (2) ◽  
pp. 258 ◽  
Author(s):  
Yun Park ◽  
Seung-A Baek ◽  
Yongsoo Choi ◽  
Jae Kim ◽  
Sang Park
Keyword(s):  
Phenolic Compounds ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Lipophilic Compounds ◽  
Antioxidant Capacities ◽  
Metabolite Profiles ◽  
Pls Analysis ◽  
Reducing Power Assay ◽  
Β Carotene

Mentha species are well recognized for their medicinal and aromatic properties. The comprehensive metabolite profiles of nine Mentha species have been determined. The extracts of these Mentha species were also screened for antioxidant and free radical scavenging activities. Forty-seven hydrophilic and seventeen lipophilic compounds were identified and quantified from the selected Mentha species. Also, eleven phenolic compounds, riboflavin and eight carotenoids were present, and their composition and content varied among the various Mentha species. The different Mentha species exhibited a range of antioxidant potencies. Horse mint especially exhibited the strongest antioxidant capacities (1,1-diphenyl-2-picryl-hydrazyl (DPPH), hydrogen peroxide, and reducing power assay) among the nine Mentha species. A difference between different samples from the same species was not observed by multivariate analysis. A high correlation between metabolites involved in closely linked biosynthetic pathways has been indicated. The projection to latent structure method, using the partial least squares (PLS) method, was applied to predict antioxidant capacities based on the metabolite profiles of Mentha leaves. According to the PLS analysis, several carotenoid contents, such as E-β-carotene, 9Z-β-carotene, 13Z-β-carotene and lutein, as well as phenolic compounds, showed a positive relationship in reducing the power of Mentha extracts. Horse mint is a good candidate because of its high antioxidant efficacy among the nine Mentha species included in the study.

scholarly journals Antioxidant activity of plant extracts and their effect on methane fermentation in bioreactors

2018 ◽  
Vol 32 (3) ◽  
pp. 395-401 ◽  
Author(s):  
Marta Oleszek ◽  
Solomiia Kozachok
Keyword(s):  
Antioxidant Activity ◽  
Production Efficiency ◽  
Biogas Production ◽  
Radical Scavenging Activity ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Antioxidant Compounds ◽  
Methane Fermentation ◽  
Biogas Yield

Abstract Extracts of Solidago virgaurea L. (European goldenrod), Lavandula angustifolia Mill. (lavender) and Arnica chamissonis Less. (arnica) were tested as potential additives for methane fermentation in bioreactors, as it was hypothesized that their antioxidant properties may improve biogas production efficiency. Hence, methane fermentation of maize silage with the addition of tested extracts was performed in eudiometers, and both the biogas volume and methane content in biogas were measured. In addition, antioxidant properties, such as reducing power and 1,1-diphenyl-2-picrylhydrazyl free radical-scavenging activity, were determined spectrophotometrically. The results showed that only the addition of a goldenrod crude extract caused a significant increase in biogas yield, despite the fact that it presented the lowest antioxidant activity of the three tested species. No significant differences in biogas yield were found between the other two additives and the control. Biogas production efficiency was not correlated with the antioxidant activity of the crude extracts. Hence, the increase in methane fermentation efficiency in the case of goldenrod supplementation might have resulted from some other non-antioxidant compounds occurring in this species.

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