Antioxidant Potential ofGynura procumbens

Antioxidant potential of Amorphophallus paeoniifolius in relation to their phenolic content

“…Hence, the natural antioxidants available in our food source have been suggested as safe for therapy (Athar, 2002). A number of antioxidants have been derived from plants and have been widely studied (Balunas & Kinghorn, 2005;Dehghan et al, 2007;Puvanendran et al, 2008;Rosidah et al, 2008). Numerous studies have also indicated that many plant products, including flavonoids, anthraquinones, tannins, proanthocyanidins, and other phenolics, as well as substances derived from fruit, vegetables, and various plant or herbal extracts, have radicalscavenging activity (Borek, 1997).…”

Mutagenic and antimutagenic potentials of fruit juices of five medicinal plants in Allium cepa L.: Possible influence of DPPH free radical scavengers

“…The freeze dried fruit juices (FDFJ) were tested for their ability to scavenge free radicals from 2, 2-diphenyl -1-picryl-hydrazyl (DPPH) following the described method (Rosidah et al, 2008), but with some modifications. Briefly, 2 mg/ml of each of the FDFJ was weighed and dissolved in HPLC grade methanol.…”

“…In the recent years, investigations into phytochemicals used as food or to treat illnesses have increased, because juices are often suspected to contain constituents that are harmful or/and protective to the genetic system (nucleic acids) of living organisms. The damaging effects of chemical compounds on the genetic system of organisms have been reported to elicit several human diseasessuch as cancer, type II diabetes, Alzheimer's disease, coronary heart disease and aging, through the generation of reactive oxygen species (ROS), free radicals as well as oxygen anions (O 2 ) in the cells (Odin, 1997;Ajith and Janardhanan, 2002;Gupta et al, 2008;Rosidah et al, 2008;Zahin et al, 2010). However, antimutagenic compounds prevent and protect the genetic system from any forms of damage that may be caused by either ROS generated through metabolic activity of chemicals in drugs and food substances or through radiation.…”

Antioxidant Activity of Alkaloid Compounds from Litsea cubeba Lour

“…Methanol extract from attarasa fruits showed to be active on HeLa cell lines which cause apoptosis through activation of caspase 3/7 3,4 . There are more than forty isoquinolin alkaloids that contained in Litsea genus which are active as antibacterial agents against 5 . The heartwoods of Litsea cubeba contained high level of phenolic and flavonoid and found to be active as antioxidant 6 .…”

“…Oxidative stress products when reactive forms of oxygen are produced faster than they could be safely neutralized with antioxidant mechanisms and/or from a decrease in antioxidant defense. The uncontrolled production of oxygen free radicals and the unrateabled system of antioxidant capability in protection results in the cause of many diseases, such as cancer, diabetes, heart diseases, Alzheimer's, and aging [1][2][3][4][5][6] .…”