Antioxidant efficiency of metal-containing and ashless additives based on bis(alkylphenyl)dithiophosphoric acid

1979 ◽  
Vol 15 (9) ◽  
pp. 678-680
Author(s):  
E. A. Ivanova ◽  
G. F. Bogdanova ◽  
G. A. Trofimov ◽  
A. Ya. Levin
Keyword(s):  
Dithiophosphoric Acid ◽  
Antioxidant Efficiency ◽  
Ashless Additives

Syntheses, spectral properties and pesticide activity of O-ethyl-S-propyl-O-(1-alkyl, phenyl-5-chloro, alkoxy-6-oxo-1H-pyridazine-4-yl)esters of dithiophosphoric acid

1980 ◽  
Vol 45 (8) ◽  
pp. 2247-2253 ◽  
Author(s):  
Václav Konečný ◽  
Štefan Varkonda ◽  
Vojtech Kubala
Keyword(s):  
Spectral Properties ◽  
Uv Spectra ◽  
Dithiophosphoric Acid ◽  
Insecticide Activity ◽  
Ir And Uv Spectra

Syntheses of O-ethyl-S-propyl-O-(1-alkyl, phenyl-5-chloro, alkoxy-6-oxo-1H-pyridazine-4-yl) esters of dithiophosphoric acid are described. The compounds were investigated for their IR and UV spectra and for their contact and system activities as insecticides, acaricides, ovicides, fungicides and herbicides. Some of the compounds proved efficient acaricides; compound VIII also had an insecticide activity.

scholarly journals Effect of Propagation Method and Ploidy Level of Various Rootstocks on the Response of the Common Clementine (Citrus clementina Hort. ex Tan) to a Mild Water Deficit

Agriculture ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 321 ◽  
Author(s):  
Julie Oustric ◽  
Radia Lourkisti ◽  
Stéphane Herbette ◽  
Raphaël Morillon ◽  
Gilles Paolacci ◽  
...  
Keyword(s):  
Water Deficit ◽  
Ploidy Level ◽  
Fruit Size ◽  
Redox Balance ◽  
Fruit Production ◽  
Photosynthetic Parameters ◽  
Trifoliate Orange ◽  
Antioxidant Efficiency ◽  
Diploid Genotype ◽  
Propagation Methods

Current climatic upheavals reduce water availability which impacts the growth and fruit quality of plants. In citrus crops, scion/rootstock combinations are used to ensure high fruit production and quality and a stress tolerance/resistance. Our objective was to assess the effect on the clementine scion (C) under natural mild water deficit of (i) polyploid rootstocks by comparing the allotetraploid FlhorAG1 (C/4xFLs; trifoliate orange + Willowleaf mandarin) with its diploid parents, trifoliate orange (C/2xTOs), and Willowleaf mandarin (C/2xWLs), and with a diploid genotype used as reference (Carrizo citrange, C/2xCCs), (ii) rootstock propagation methods by comparing trifoliate orange seedling (C/2xTOs) with cutting (C/2xTOc). A mild water deficit observed under orchard conditions during the summer period (July–August) induced a significant change in yield (except in C/2xTOs), fruit size, and quality. C/2xCCs, C/2xTOs, and C/2xWLs appeared less affected by water deficit as indicated by their lower reduction of predawn leaf water potential (Ψpd), relative water content (RWC), transpiration (E), and photosynthetic parameters (Pnet and gs). Their greater redox balance was probably due to their better antioxidant efficiency. Seedling rootstocks lead to a better adaptation of clementine scions to water deficit than cutting or allotetraploid rootstock. Improving the tolerance to water deficit requires taking into consideration the rootstock genotype, propagation method, and ploidy level.

Optically Active S-Esters of Dithiophosphoric Acid on the Basis of (1S)-endo-(-)-Borneol

2013 ◽  
Vol 24 (6) ◽  
pp. 490-494 ◽  
Author(s):  
Ilyas S. Nizamov ◽  
Gulnara T. Gabdullina ◽  
Almaz R. Nurmukhametov ◽  
Ilnar D. Nizamov ◽  
Rafael A. Cherkasov
Keyword(s):  
Optically Active ◽  
Dithiophosphoric Acid

Structure−Antioxidant Efficiency Relationships of Phenolic Compounds and Their Contribution to the Antioxidant Activity of Sea Buckthorn Juice

2003 ◽  
Vol 51 (15) ◽  
pp. 4233-4239 ◽  
Author(s):  
Daniel Rösch ◽  
Meike Bergmann ◽  
Dietrich Knorr ◽  
Lothar W. Kroh
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Sea Buckthorn ◽  
Antioxidant Efficiency

Antioxidant Efficiency of Oxovitisin, a New Class of Red Wine Pyranoanthocyanins, Revealed through Quantum Mechanical Investigations

2013 ◽  
Vol 53 (1) ◽  
pp. 66-75 ◽  
Author(s):  
Stefano Alcaro ◽  
Sandro Giuseppe Chiodo ◽  
Monica Leopoldini ◽  
Francesco Ortuso
Keyword(s):  
Red Wine ◽  
Quantum Mechanical ◽  
Antioxidant Efficiency ◽  
New Class

scholarly journals Effect of the natural antioxidant eugenol on quality preservation of commercial biodiesels produced with soybean oil or waste frying oil during storage at different temperatures

2018 ◽  
Vol 40 ◽  
pp. 61
Author(s):  
Eliane Ferreira de Souza ◽  
Talita Cuenca Pina Moreira Ramos ◽  
Mikaelly Nayara Santos ◽  
Juliana Rodrigues Ferraz ◽  
Margarete Soares da Silva ◽  
...  
Keyword(s):  
Soybean Oil ◽  
Oxidation Stability ◽  
Oxidative Degradation ◽  
Acid Number ◽  
Natural Antioxidant ◽  
Waste Frying Oil ◽  
Antioxidant Efficiency ◽  
Accelerated Oxidation ◽  
Oxidation Test ◽  
Rancimat Method

The objetive of this study was to evaluate the eugenol antioxidant efficiency on the oxidation stability of commercial biodiesel synthesized from soybean oil (SB) and wast fring oil (ORB) by determining induction period (IP) and acid number (AN) during storage at 10 °C or in accelerated oxidation test at 85 °C. For the oxidation stability evaluation, the Rancimat method (EN 14112) and AN (ASTM D664) analyses were used. The initial studies showed that the antioxidants eugenol and TBHQ when added separately increased IP values for the two types of biodiesel analyzed. During the storage at 10 °C, the IP was reduced for all samples. However, the lowest reduction percentages were for samples containing eugenol (-2.07 and -11.30% for SB and ORB, respectively). In relation to AN, the samples with the antioxidant eugenol led a greater decrease of this index, with the 10000 mg kg-1 concentration being the most efficient in the conservation of biodiesel. In the accelerated oxidation test in oven at 85 °C, pure BS presented higher susceptibility to degradation than the sample containing 10000 mg kg-1 of eugenol. In both storage studies, the eugenol natural antioxidant efficiency in the control of oxidative degradation of biodiesel becomes evident. 

scholarly journals EFFECTIVENESS OF CERTAIN STABILIZERS ON THE AGEING OF POLYETHYLENE FILMS

1998 ◽  
Vol 6 (6) ◽  
pp. 71-76
Author(s):  
S. JIPA ◽  
R. SETNESCU ◽  
T. SETNESCU ◽  
C. PODINA ◽  
J. MIHALCEA
Keyword(s):  
High Density Polyethylene ◽  
High Density ◽  
Low Density Polyethylene ◽  
Phenolic Antioxidants ◽  
Low Density ◽  
Chemiluminescence Method ◽  
Antioxidant Efficiency ◽  
Polyethylene Films

The effectiveness of different phenolic antioxidants on high-density polyethylene (HDPE) and low-density polyethylene (LDPE) has been studied by the Isothermal chemiluminescence method. The decreasing order of the antioxidant efficiency for these polymers Is as follows: lrganox 1010 >> Etanox 330 > lrganox 1076 (Hostanox 016) > Topanol OC

Synthesis and antioxidant efficiency of a new amphiphilic spin-trap derived from PBN and lipoic acid

2003 ◽  
Vol 13 (16) ◽  
pp. 2673-2676 ◽  
Author(s):  
G. Durand ◽  
A. Polidori ◽  
J.P. Salles ◽  
M. Prost ◽  
P. Durand ◽  
...  
Keyword(s):  
Lipoic Acid ◽  
Spin Trap ◽  
Antioxidant Efficiency

Anthocyanin composition, antioxidant efficiency, and α-amylase inhibitor activity of different Hungarian sour cherry varieties (Prunus cerasus L.)

2016 ◽  
Vol 194 ◽  
pp. 222-229 ◽  
Author(s):  
Judit R. Homoki ◽  
Andrea Nemes ◽  
Erika Fazekas ◽  
Gyöngyi Gyémánt ◽  
Péter Balogh ◽  
...  
Keyword(s):  
Sour Cherry ◽  
Prunus Cerasus ◽  
Inhibitor Activity ◽  
Antioxidant Efficiency ◽  
Amylase Inhibitor ◽  
Anthocyanin Composition
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