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    Wyświetlanie 1-4 z 4
    Tytuł:
    Comparison of antioxidant properties of leaves of plants grown in Turkey
    Autorzy:
    Palamutoglu, Recep
    Yalcin, Seda
    Kasnak, Cemal
    Powiązania:
    https://bibliotekanauki.pl/articles/1030826.pdf
    Data publikacji:
    2020
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    ABTS
    Antioxidant
    DPPH
    FRAP
    Phenolic
    Opis:
    In this study, DPPH radical scavenging activity, ABTS radical cation decolorization assay, FRAP reducing power, total phenolic content, total flavonoid content and phenolic compounds of leaves of plants, grown in Afyon/Turkey were investigated. These plants were poppy, daisy, dandelion, manger, chickweed, black chicory and white chicory. Phenolic acids including gallic acid, ferulic acid, chlorogenic acid, coumaric acid, ellagic acid, vanilic acid, caffeic acid, cinnamic acid, 4-hydroxybenzoic acid, 2,5-dihydroxybenzoic acid and flavonoids including catechin, apigenin, naringin, rutin and quercetin amounts in leaves were determined. Among plants leaves, leaves of daisy and manger had statistically highest DPPH value and leaves of poppy and dandelion had statistically highest ABTS value, while leaves of White chicory had statistically highest FRAP value, total phenolic content and total flavonoid content. Leaves of black chicory and white chicory had higher phenolic compounds compared to that of other plants. These results suggest the using of these leaves as sources of natural antioxidants.
    Źródło:
    World Scientific News; 2020, 145; 198-209
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluation of antioxidant capasity in wild and transformed Kumato and Cherry tomatoes roots and culture media using the DPPH method
    Autorzy:
    Ostaszewska, Urszula
    Powiązania:
    https://bibliotekanauki.pl/articles/1179343.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    DPPH metod
    antioxidant capasity
    tomatoes roots
    Opis:
    The aim of this project was to compare the effect of Rhizobacterium rhizogenes infection, and subsequent hairy root induction, on the antioxidant capacity of in vitro root cultures derived from two tomato cultivars differing in flavonoid biosynthetic potential. Tomatoes and especially processed tomatoes are rich in lycopene ,which is one of the most powerful antioxidants. Antioxidan capasity of normal (wild) roots from Kumato and Cherry seeds and transformed roots from infected cotyledons with agrobacterium was determined by the DPPH metod. The results presented in this paper indicate that the normal roots extracts and extracellular had higher antioxidants capasity than transformed roots but antioxidant capasity was higher in the extracellular than in the roots extract. Standard deviation was higher in extracellular than roots extract. This experiment was valuable because antioxidants protect human body against oxidative stress which can cause many diseases such as diabetes and accelerate the aging process of the organism.
    Źródło:
    World Scientific News; 2017, 78; 114-121
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sprouting Exert Significant Influence on the Antioxidant Activity in Selected Pulses (Black Gram, Cowpea, Desi Chickpea and Yellow Mustard)
    Autorzy:
    Khyade, Vitthalrao B.
    Jagtap, Sharad G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1190118.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Ascorbic acid
    β-carotene
    DPPH
    flavonoid
    sprouts
    total antioxidant activity
    Opis:
    Pulses are a vital source of plant-based proteins and amino acids for people around the globe and should be eaten as part of a healthy diet to address obesity, as well as to prevent and help manage chronic diseases such as diabetes, coronary conditions and cancer; they are also an important source of plant-based protein for animals. Pulses provide protein and fibre, as well as a significant source of vitamins and minerals, such as iron, zinc, folate, and magnesium, and consuming half a cup of beans or peas per day can enhance diet quality by increasing intakes of these nutrients. The present attempt deals with comparison antioxidant activities of various sprouts of selected pulses. The β-carotene, ascorbic acid, total antioxidant activity, total phenol and flavonoid content of black gram (Vigna mungo), cowpea (Vigna unguiculata), desi chickpea (Cicer arietinum), and yellow mustard (Brassica alba) seeds and their sprouts (48 h) were determined. The parameters selected reflect the antioxidant capacity with respect to the dietary antioxidants (β-carotene, ascorbic acid) which were noted to be highest in chickpea sprouts and black gram sprouts respectively. The highest antioxidant activity in terms of % DPPH inhibition (49.837 ± 0.61 % ) and flavonoid content ( 211.06 ± 8.17 mg/100g ) was observed in cowpea sprouts. The highest total phenol content was noted in yellow mustard sprouts (58.45 ±6.67 mg/100g). Inclusion of pulses in the diet is a healthy way to meet dietary recommendations and is associated with reduced risk of several chronic diseases including cancer. Long-term randomized controlled trials are needed to demonstrate the direct effects of pulses on the cancer like diseases.
    Źródło:
    World Scientific News; 2016, 35; 73-86
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biosynthesis, characterisation, free radical scavenging activity and anti-bacterial effect of plant-mediated zinc oxide nanoparticles using Pithecellobium dulce and Lagenaria siceraria Leaf Extract
    Autorzy:
    Prakash, M. Jeevan
    Kalyanasundharam, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1193960.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    2-2-diphenyl-1-picrylhydrazyl
    DPPH
    Energy Dispersive Xray
    Lagenaria siceraria
    Pithecellobium dulce
    Scanning Electron Microscopy
    Transmission Electron Microscope
    X-Ray
    ZnO
    by FTIR Spectroscopy
    gram-positive and gram negative bacterial
    Opis:
    The study involved synthesis of Zinc Oxide nanoparticles using biological and chemical reducing agents. The aim was to compare the yield, nature and antimicrobial activity of nanoparticles. Nanoparticles synthesized by the two methods were characterized by FTIR Spectroscopy, Scanning Electron Microscopy (SEM), Energy Dispersive Xray (EDAX), Transmission Electron Microscope (TEM) and X-ray diffraction (XRD). In biological method, Pithecellobium dulce and Lagenaria siceraria leaf extract; and in chemical method, sodium hydroxide was used as reducing agents. Antibacterial study was carried out on gram-positive and gram negative bacterial strains by disc diffusion method. The biologically synthesized ZnO Nanoparticles showed better antimicrobial activities with respect to the activities of synthetic drugs than chemical method. Antioxidant potential of synthesized nanoparticles was assessed through 2,2–diphenyl-1-picrylhydrazyl (DPPH) method.
    Źródło:
    World Scientific News; 2015, 18; 60-77
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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