scholarly journals Oxidative Reactions with Nonaqueous Enzymes

2001 ◽  
Author(s):  
Jonathan S. Dordick ◽  
Douglas Clark ◽  
Brian H Davison ◽  
Alexander Klibanov
Keyword(s):  
Oxidative Reactions

Oxidative Halogenation of Arenes, Olefins and Alkynes Mediated by Iodine(III) Reagents

2020 ◽  
Vol 17 ◽  
Author(s):  
Luis A. Segura-Quezada ◽  
Karina R. Torres-Carbajal ◽  
Yuvraj Satkar ◽  
Kevin A. Juárez Ornelas ◽  
Narendra Mali ◽  
...  
Keyword(s):  
Functional Groups ◽  
Oxidative Reactions ◽  
Recent Advances ◽  
Oxidative Halogenation ◽  
Synthetic Transformations

: Iodine(III)-based reagents has been broadly used in oxidative reactions for the structural functionalization with several functional groups. Among the more relevant and useful synthetic transformations using these hypervalent γ 3 -reagents, it can be found the fluorination, chlorination, bromination as well as the iodination protocols. Herein, we present some of the most representatives oxidative halogenation procedures of arenes, olefins and alkynes dating from the oldest to the more recent advances in the area, highlighting the discovery and application of new iodine(III)-based halogenating species.

ChemInform Abstract: Iron-Catalyzed Direct Synthesis of Imines from Amines or Alcohols and Amines via Aerobic Oxidative Reactions under Air.

ChemInform ◽  
2013 ◽  
Vol 44 (39) ◽  
pp. no-no
Author(s):  
Erlei Zhang ◽  
Haiwen Tian ◽  
Sendong Xu ◽  
Xiaochun Yu ◽  
Qing Xu
Keyword(s):  
Direct Synthesis ◽  
Oxidative Reactions

scholarly journals TEMPERATURE AND HEART RATE IN PTEROTRACHEA AND TIEDEMANNIA

1925 ◽  
Vol 9 (2) ◽  
pp. 269-284 ◽  
Author(s):  
Otto Glaser
Keyword(s):  
Heart Rate ◽  
High Temperatures ◽  
Synthetic Process ◽  
Average Value ◽  
Oxidative Reactions ◽  
Limax Maximus ◽  
The One ◽  
Lower Limits ◽  
Co2 Excretion ◽  
Do So

1. For the heart rate in Pterotrachea coronata, intermediate temperatures disclose a thermal increment of 11,200 ±. This value is identical with the one reported by Crozier and Stier for the lamelli-branch, Anodonta. In the pteropod, Tiedemannia neapolitana the same temperatures typically reveal in the heart rate a µ value of 16,200 ± This agrees quantitatively with 16,300 found by Crozier and Stier for the heart of the slug, Limax maximus. 2. At high temperatures the average value of µ for Pterotrachea is 7,300: for Tiedemannia, 7,400. The corresponding averages at the lower limits are 22,000 and 23,000. 3. The great variability found near the edges of the temperature field are explicable in two ways. During intermissions characteristic of high temperatures and occurring also at low, we can assume a restorative process; while at both the upper and lower limits we may, in addition, find that reactions assume control which under ordinary circumstances never do so. Special evidence indicates that the highest temperatures employed, 27°C., and the lowest, 4°C., caused no irreversible changes in mechanism. 4. The theoretical analysis of the experimental facts makes use of Meyerhof's conception of carbohydrate metabolism and projects the cyclical nature of rhythm into the substrate of control. Assuming as a source of energy an original supply of material O, the value of 22,000 ± is assigned provisionally to a mobilization hydrolysis while 11,200 ± and 16,000 ± are attached to oxidative reactions influenced respectively by OH' and possibly Fe, or some other catalyst. The lowest value, 7,300 ± is assumed to indicate a synthetic process (lactic acid → glycogen?), possibly limited by CO2 excretion. In the present state of our knowledge, this distribution and interpretation seems to account reasonably for the experimental facts, but until we know more about the neurogenic controls, is entitled to rank only as an hypothesis.

The dipteran parasitoidExorista bombycisinduces pro- and anti-oxidative reactions in the silkwormBombyx mori: Enzymatic and genetic analysis

2017 ◽  
Vol 94 (2) ◽  
pp. e21373 ◽  
Author(s):  
Pooja Makwana ◽  
Appukuttan Nair R. Pradeep ◽  
Shambhavi P. Hungund ◽  
Kangayam M. Ponnuvel ◽  
Kanika Trivedy
Keyword(s):  
Genetic Analysis ◽  
Oxidative Reactions

Visual Disorders and Oxidative Reactions

2019 ◽  
pp. 71-88
Author(s):  
Shambhu D. Varma ◽  
Richard D. Richards
Keyword(s):  
Oxidative Reactions ◽  
Visual Disorders

scholarly journals Silent hyperlipidaemia modulated vascular endothelial markers

Pharmacia ◽  
2021 ◽  
Vol 68 (2) ◽  
pp. 479-484
Author(s):  
Marwan Merkhan ◽  
Jehan Mohammad ◽  
Zainab Fathi ◽  
Zaid Younis ◽  
Samir Mahmood ◽  
...  
Keyword(s):  
Heart Diseases ◽  
Pathological Condition ◽  
Circulatory System ◽  
Vascular Endothelial ◽  
Protein Markers ◽  
Great Role ◽  
Oxidative Reactions ◽  
Concomitant Reduction ◽  
Healthy Control

The aetiology of ischemic heart diseases is mainly based on atherosclerosis of coronary artery. Inflammation and oxidative reactions are initiating and aggravating the illness resulting in pathological remodelling of vasculaturze at site of injury. Endothelium lining of blood vessels participated in the reaction biochemically through releasing some proteins into circulatory system which further complicate the condition. The aim of this study was to determine early diagnosed hyperlipidaemia-associated changes of the plasma level of some of these endothelial biomolecules. Compared to healthy control, hyperlipidaemic patients have significantly increased arginase, metalloendopeptidase, peroxidase, myeloperoxidase, and peroxynitrite with concomitant reduction in arylesterase and nitric oxide. The present study concluded that hyperlipidaemia play a great role in modulation of certain plasma protein markers which might be directly related to patient pathological condition or could be used as a tool for diagnosis or patient follow up indicating the stage of vasculature remodelling, healing, inflammation or resolution.

scholarly journals The Quality of Superior Seedless Bunches during Shelf Life as Determined by Growth on Different Rootstocks

Agriculture ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 990
Author(s):  
A. A. Lo’ay ◽  
Hamed Ismail ◽  
Hazem S. Kassem
Keyword(s):  
Shelf Life ◽  
Soluble Solids ◽  
Ion Leakage ◽  
Soluble Solids Content ◽  
Close Attention ◽  
Oxidative Reactions ◽  
Seedless Grape ◽  
Metabolism Enzyme ◽  
Solids Content

Vineyard rootstocks are an important tool in the local and international market for growing the Superior Seedless grape cultivar, which is highly favored by customers. As a result, it is vital to pay close attention to the quality of clusters during handling. The current study aimed to determine whether Superior Seedless vines can be grown on specific rootstocks, resulting in higher quality during shelf life. Vines of the Superior Seedless vine cultivar that were used were 13 years old and had been grown on sandy soil. These vines were grafted onto four different rootstocks (genotypes), namely Freedom, 1103 Paulsen, SO4, and Own Root. The soluble solids content (SSC%) was selected as 16%. Bunches were subsequently stored in the lab at 27 ± 1 °C with 57 ± 3% air relative humidity for three days. Rootstock 1103 Paulsen’s quality was found to be superior to that of the other rootstocks, according to the results of the study. Rootstock 1103 Paulsen maintained its ascorbic acid (AA) content, which is reflected in its antioxidant capacity, according to the results. In addition, lipid peroxidation accumulation and ion leakage percentages indicated that oxidative reactions were at their lowest levels. The results show that 1103 Paulsen decreases cellular metabolism enzyme activities at the shelf life level and improves the bunch quality of Superior Seedless (scion) grapes within 4 days of application. As a whole, the results show that the 1103 Paulsen rootstock produces Superior Seedless bunches of a high quality that is preserved throughout the shelf life period.

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