scholarly journals Characterization of antioxidant olive oil biophenols by spectroscopic methods

2010 ◽  
Vol 91 (2) ◽  
pp. 309-314 ◽  
Author(s):  
Fátima Paiva-Martins ◽  
Vera Rodrigues ◽  
Rita Calheiros ◽  
Maria PM Marques
Keyword(s):  
Olive Oil ◽  
Spectroscopic Methods

Measurement of Dysprosium Stark Width and the Electron Impact Width Parameter

2018 ◽  
Vol 73 (2) ◽  
pp. 203-213 ◽  
Author(s):  
Jhonatha R. dos Santos ◽  
Jonas Jakutis Neto ◽  
N. Rodrigues ◽  
M.G. Destro ◽  
José W. Neri ◽  
...  
Keyword(s):  
Electron Density ◽  
Impact Parameter ◽  
Plasma Temperature ◽  
Spectral Lines ◽  
Emission Lines ◽  
Spectroscopic Methods ◽  
Species Concentration ◽  
The Impact ◽  
Stark Width

In this work, we suggest a methodology to determine the impact parameter for neutral dysprosium emission lines from the characterization of the plasma generated by laser ablation in a sealed chamber filled with argon. The procedure is a combination of known consistent spectroscopic methods for plasma temperature determination, electron density, and species concentration. With an electron density of 3.1 × 1018 cm–3 and temperature close to 104 K, we estimated the impact electron parameter for nine spectral lines of the neutral dysprosium atom. The gaps in the impact parameter data in the literature, mainly for heavy elements, stress the importance of the proposed method.

scholarly journals Physico-chemical and quality characterization of pulp oil from two varieties of pili (Canarium ovatum Engl.) from Bicol, Philippines

Food Research ◽  
2020 ◽  
Vol 4 (6) ◽  
pp. 1937-1946
Author(s):  
M.M.D.R. Tugay ◽  
L.E. Mopera ◽  
E.B. Esguerra ◽  
K.A.T. Castillo-Israel
Keyword(s):  
Fatty Acid ◽  
Olive Oil ◽  
Virgin Olive Oil ◽  
Coconut Oil ◽  
Acid Value ◽  
Extra Virgin Olive Oil ◽  
Quality Characteristics ◽  
Physico Chemical ◽  
Dark Color

This study aimed to characterize and compare pili (Canarium ovatum Engl.) pulp oil from two different varieties of pili fruits in Bicol, Philippines namely M. Orolfo and Orbase varieties for possible utilization into oil-based products. The effects of varietal differences in pili fruits on physical, chemical and quality characteristics of its pulp oil were determined. These two oils were also compared with control oils, commercially available coconut oil and extra virgin olive oil. Pili pulp oil from M. Orolfo had dark color while Orbase had color close to extra virgin olive oil. The two varieties did not significantly differ from each other in terms of refractive index, moisture and volatile matters, acid value, iodine value, saponification number and percent unsaponifiable matter but significantly differed from coconut oil and extra virgin olive oil. On the other hand, the two varieties significantly differed from each other in terms of peroxide value, Vitamin A and α-tocopherol contents. In terms of fatty acid profile, high amounts of palmitic acid were determined in both pili varieties (19-25%) compared with coconut oil (6.34%). Oleic acid in Orbase was 71.5% while M. Orolfo had 58.1%, which are comparable with extra virgin olive oil (77.9%). Pili pulp oils from M. Orolfo and Orbase can be utilized into oilbased products because its chemical and quality characteristics are within the standard. Both can be stored for a longer period of time and healthier in terms of fatty acid composition and natural antioxidant content.

Characterization of chemical perfection of YAG:Nd crystals with absorption spectroscopic methods

1987 ◽  
Vol 22 (4) ◽  
pp. 599-605 ◽  
Author(s):  
Hj. Bernhardt ◽  
R. Rauch ◽  
K. Toepfer ◽  
G. Wehrhan
Keyword(s):  
Spectroscopic Methods

scholarly journals Synthesis and characterization of nickel-doped ceria nanoparticles with improved surface reducibility

RSC Advances ◽  
2018 ◽  
Vol 8 (71) ◽  
pp. 40712-40719 ◽  
Author(s):  
Wassila Derafa ◽  
Fotios Paloukis ◽  
Basma Mewafy ◽  
Walid Baaziz ◽  
Ovidiu Ersen ◽  
...  
Keyword(s):  
Schiff Base ◽  
Schiff Base Complexes ◽  
Synthesis And Characterization ◽  
Spectroscopic Methods ◽  
Ceria Nanoparticles ◽  
Doped Ceria

Nickel-doped ceria nanoparticles (Ni0.1Ce0.9O2−x NPs) were fabricated from Schiff-base complexes and characterized by various microscopic and spectroscopic methods.

Characterization of phenolic and volatile composition of extra virgin olive oil extracted from six Italian cultivars using a cooling treatment of olive paste

LWT ◽  
2018 ◽  
Vol 87 ◽  
pp. 523-528 ◽  
Author(s):  
Gianluca Veneziani ◽  
Sonia Esposto ◽  
Agnese Taticchi ◽  
Stefania Urbani ◽  
Roberto Selvaggini ◽  
...  
Keyword(s):  
Olive Oil ◽  
Virgin Olive Oil ◽  
Extra Virgin Olive Oil ◽  
Volatile Composition
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