نتایج جستجو برای: antioxidant agent

تعداد نتایج: 342525  

Journal: :Trends in biotechnology 2003
Martin Guerin Mark E Huntley Miguel Olaizola

The carotenoid pigment astaxanthin has important applications in the nutraceutical, cosmetics, food and feed industries. Haematococcus pluvialis is the richest source of natural astaxanthin and is now cultivated at industrial scale. Astaxanthin is a strong coloring agent and a potent antioxidant - its strong antioxidant activity points to its potential to target several health conditions. This ...

2012
T. Satapathy B. Meher S. P. Tiwari B. Tripathy

The objective of the study was to investigate the anti-oxidant and anti-inflammatory effect of aqueous extract of Ocimum sanctum leaf. The antioxidant and anti-inflammatory activities were evaluated using in vitro Ferric reducing power, Free radical scavenging activity by DPPH method, hydroxyl radical scavenging activity, Nitric oxide radical scavenging activity, Hyaluronidase inhibition assay....

Journal: :Bioresource technology 2009
Yu-Tang Tung Jyh-Horng Wu Chih-Yu Huang Yueh-Hsiung Kuo Shang-Tzen Chang

The present study was carried out to evaluate the antioxidant activities of bark extract of Acacia confusa and some of the isolated constituents from its ethyl acetate (EtOAc) fraction in various in vitro systems to gain mechanistic insights. Results from antioxidant assays together with authentic antioxidant standards revealed that EtOAc fraction showed strong superoxide radical scavenging act...

Journal: :Plant science today 2023

The present study aimed to evaluate Antioxidant and Cytotoxic activity of phytofabricated silver nanoparticles (FmF-AgNPs) derived from Figs Ficus mollis. This green synthesized FmF-AgNPs were tested for antioxidant with DPPH assay cytotoxicity against MCF-7 (Human breast adenocarcinoma cell lines) MTT at various concentrations. data obtained demonstrated that posses both which is dosage-depend...

2016
Yousef Tavakolpour Marzieh Moosavi‐Nasab Mehrdad Niakousari Soroush Haghighi‐Manesh

The essential oil (EO) from dried ground powder leaves and stems of Thymua danesis was extracted using hydrodistillation (HD), ohmic extraction (OE), ultrasound-assisted HD and ultrasound-assisted OE methods. Then, the antioxidant, antimicrobial, and sensory properties of the EO were investigated both in vitro and in food systems. Thyme EO extracted by ultrasound-assisted HD method had promisin...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران - دانشکده مهندسی کامپیوتر 1383

این پایان نامه به بررسی نقش مثبت یا منفی احساسات روی کارایی عامل های یادگیرنده در یک محیط multi-agent می پردازد. در این راستا مدلی برای عامل های یادگیرنده دارای احساس معرفی می شود. برای بررسی نقش احساسات، یک محیط فرضی multi-agent شبیه سازی شده و حالت های گوناگونی در آن نظر گرفته می شوند. در حالت نخست، کارایی عامل هایی بررسی می شود که دارای احساس نیستند و فقط قابلیت یادگیری دارند. در دومین حالت...

2010
Jeetendra Nehete Manish Bhatia Minal Narkhede

Costus speciosus (Koen) J.E. Sm. plant and its extracts are used for treatment of fever, snake bites, jaundice, and as a purgative, astringent and antibacterial agent. In the present study, an attempt has been made to evaluate in vitro antioxidant activity of different extracts of this plant by DPPH radical scavenging activity, total antioxidant capacity, nitric oxide scavenging activity, ion c...

Journal: :Alternative medicine review : a journal of clinical therapeutic 2000
D W Lamson M S Brignall

The previous lengthy review concerning the effects of antioxidant compounds used concurrently with radiotherapy and chemotherapy has been reduced to a reference guide. There are only three presently known examples in which any agent classifiable as an antioxidant has been shown to decrease effectiveness of radiation or chemotherapy in vivo. The vast majority of both in vivo and in vitro studies...

Abolfazl Adeli Mirzaie, Amir Mohammad Mortazavian, Masoumeh Arab, Mojtaba Yousefi Asli, Nasim Khorshidian,

Fenugreek (Trigonella  foenum graecum), native to southern Europe and Asia, is an annual herb with white flowers and hard, yellowish brown and angular seeds, known from ancient times, for nutritional value beside of its medicinal effects. Fenugreek seeds are rich source of gum, fiber, alkaloids, flavonoids, saponins and volatile content. Due to its high content of fiber, fenugreek could be...

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