نتایج جستجو برای: antioxidant activities

تعداد نتایج: 451355  

2014
Anup Subhash Hendre Rohan Sharadanand Phatak

Herb Kalanchoe pinnata is grown as weeds in the tropical countries like India. It has a wide range of active constituents which has potent medicinal properties. The main objective was to overview the total antioxidant capacity of the herb Kalanchoe pinnata. Antioxidant activities were evaluated in terms of total phenolics content, total antioxidant activity, and reducing power. Different studie...

2011
HUMA ALI JITENDER MONGA LOKENDRA GUPTA

As plants produce a huge amount of antioxidants they can represent a source of new compounds with antioxidant activities. From this point of view, the main goal of this research was to study the antioxidant activities of the Ficus carica through the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicalscavenging method. Since DPPH assay has been largely used as a quick, reliable, and reproducible parame...

Journal: :Molecules 2017
Feng Li Yi-Dan Mao Yi-Fan Wang Aun Raza Li-Peng Qiu Xiu-Quan Xu

Stems are the important residues of Trapa quadrispinosa Roxb., which are abundant in phenolic compounds. Ultrasonic-assisted enzymatic extraction (UAEE) is confirmed as a novel extraction technology with main advantages of enhancing extraction yield and physiological activities of the extracts from various plants. In this study, UAEE was applied to obtain the highest yield of phenolic content, ...

Journal: :Journal of experimental botany 2005
Biyan Zhou Zhenfei Guo Jinpeng Xing Bingru Huang

Previous studies suggest that abscisic acid (ABA) stimulates the activities of antioxidant enzymes under normal and chilling temperature and enhanced chilling resistance in Stylosanthes guianensis. The objective of this study was to test whether nitric oxide (NO) is involved in the ABA-induced activities of the antioxidant enzymes in Stylosanthes guianensis due to its nature as a second messeng...

2011

Coleus tuberosus is classified as a local vegetable of the family Lamiaceae, the subfamily Nepetoideae and tribe Ocimeae. Ethanolic extract peel of Coleus tuberosus (EEPC) and ethanolic extract flesh of Coleus tuberosus (EEFC) were evaluated for their antioxidant activities by using ferric thiocyanate (FTC) and thiobarbituric acid (TBA) method. Cancer chemopreventive activities were evaluated b...

Journal: :Chinese Medicine 2008
Lai Wah Chan Emily LC Cheah Constance LL Saw Wanyu Weng Paul WS Heng

BACKGROUND Eight medicinal plants were tested for their antimicrobial and antioxidant activities. Different extraction methods were also tested for their effects on the bioactivities of the medicinal plants. METHODS Eight plants, namely Herba Polygonis Hydropiperis (Laliaocao), Folium Murraya Koenigii (Jialiye), Rhizoma Arachis Hypogea (Huashenggen), Herba Houttuyniae (Yuxingcao), Epipremnum ...

Journal: :Food technology and biotechnology 2015
Valéria Dal Prá Carolina Bolssoni Dolwitsch Fernanda Oliveira Lima Camilo Amaro de Carvalho Carine Viana Paulo Cícero do Nascimento Marcelo Barcellos da Rosa

In this work, the antioxidant and antimicrobial activities of Brassica oleracea var. capitata extracts obtained through ultrasound-assisted extraction are evaluated. The extracts obtained using the best extraction conditions were subjected to different hydrolysis conditions before their use in the biological tests. The crude and hydrolysed extracts were characterized using gas chromatography co...

2012
Noor Nazirahanie Abrahim M S Kanthimathi Azlina Abdul-Aziz

BACKGROUND Breast cancer is the most common form of cancer and the focus on finding chemotherapeutic agents have recently shifted to natural products. Piper betle is a medicinal plant with various biological activities. However, not much data is available on the anti-cancer effects of P. betle on breast cancer. Due to the current interest in the potential effects of antioxidants from natural pr...

2012
Patricia Diaz Sang Chul Jeong Samiuela Lee Cheang Khoo Sundar Rao Koyyalamudi

UNLABELLED BACKGROUND This study aims to determine the relationship between the antioxidant and anti-inflammatory activities of the thirteen herbs and two fungi extracts, and their total phenolic and flavonoid contents. METHODS Antioxidant activities were evaluated by four assays: an antioxidant activity assay using Saccharomyces cerevisiae, a DPPH ((2, 2-diphenyl-1-picrylhydrazyl) assay t...

2012
Marcelo Gonzaga de Freitas Araújo Felipe Hilário Wagner Vilegas Lourdes Campaner dos Santos Iguatemy Lourenço Brunetti Claudia Elena Sotomayor Tais Maria Bauab

The biological activities of a plant extract depend on a complex sum of individual properties including the antioxidant activity. Several biological activities protect against the harmful action of reactive oxygen species (ROS), and here we focused our attention on the relationship between the biological activities tested and the antioxidant properties. In this study, the total flavonoid conten...

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