Reactive oxygen species

converted to iron (III) in a series of experiments. Without the organics present, the hydrogen peroxide reformed by reacting slowly with iron (III) to produce ferric salts, which then degrade into more hydroxyl radicals. The actions of these two iron species, iron (II) and iron (III) can be characterized into two specific systems. The ferrous system refers to the one-step case where the primary, hydroxyl radical producing reaction is the reaction between iron (II) and hydrogen peroxide. The…

lab we conducted involved a process called the Maillard Reaction. When it comes to cooking meats, heating the food causes the proteins, especially those nearest the surface of the meat, to denature. These denatured proteins become more chemically reactive to other molecules in their environment. One of the primary reactions that occur when browning meats and many other foods is called the Maillard Reaction. The Maillard Reaction is a non-enzymatic chemical reaction between amino acids and…

Chronic periodontitis is a complex disease caused by microorganism. recent studies showed the effect of periodontal diseases on the systemic health conditions like cardiovascular disease (CVD). C reactive protein (CRP) is an acute phase reactant which used as marker for monitoring of periodontal diseases and systemic health problems. Body mass index (BMI) on the other hand has a relationship with the level of CRP and severity of periodontal diseases as well as systemic health. 1.1. INTRODUCTION…

can get involved in cleaning waterways, reforestation efforts, using technology to reduce pollution, etc. Cleaning waterways can prevent flooding and can protect many ecosystems. Humans can restore ecological balance by reforesting native plant species. Furthermore, humans can use technology like water purifiers and chemical filters to reduce air and water…

These pieces were then subjected to an ozone clean in a Novascan PSD Pro series digital UV ozone system utilizing a Hg vapor lamp. This cleaning was performed in an oxygen-enriched environment, achieved by allowing ultrapure (99.98%) oxygen to flow through the system for several minutes before sealing the chamber with the Hg lamp on and the sample on a heating stage held at 150 °C for 60 min, followed by a 30-min period of incubation with the lamp off…

In September of 1985 Kroto, Heath, O’Brien, Curl, and Smalley were investigating sources of the long carbon chain molecules in the interstellar medium and how they might be related to soot formation.1 Smalley developed a laser vaporization cluster beam apparatus that allowed for the mass-spectrometric study of stable clusters formed in a helium-entrained plasma produced by a pulse of laser aimed on at a solid target.2 This experimental technique was a very important discovery to cluster science…

T0>T1>T11>T10>T9>T8>T7>T6>T5>T4>T3>T2. As the ETP sludge’s concentration increases the plant growth also increases in the same trend because the available N,P and K is increases gradually when the concentration of ETP sludge increases after incubation presented in figure 1. Moreover, vegetation of the treated soil proved that the presence of sludge marginally promotes the plants growth, while hindering the uptake of Zn and Pb by the leaves and the roots [25].…

antioxidant activity are by determining its ability of hydrogen atom donation to a reactive species and/or check its ability to take off any molecules of oxidative initiation. Total antioxidant capacity (TAC) level evaluation can be classified into a direct method and indirect method. Indirect method or in vitro method consists of DPPH radical scavenging activity assay, Trolox equivalent antioxidant capacity (TEAC) and oxygen radical absorbance capacity (ORAC) while direct method or in vivo…

Both complete and incomplete combustion have had a detrimental impact on both the environment and human health. In particular, the Greenhouse Effect, acid rain and photochemical smog, have come to light as a significant issue in recent years. When hydrocarbons, known more commonly as fossil fuels, are combusted, there are unintended waste products and they cause harm to human health and the environment. These waste products have social, economic and environmental implications. The effects…

products, such as eggs, red meat, liver, or dairy products (Guardiola et al., 2002). The oxysterol content in these products is influenced by ambient conditions (Zanardi et al., 2002; Soupas et al., 2004), e.g., temperature, light, or presence of oxygen in the place, where the food is stored. The saturation of lipid content in cell membrane also influences the sterol oxidation extent (Soupas et al., 2004). Oxysterols enter the human body also through the skin. Tonello and Polli showed, that…