scholarly journals Chemical Characterization of Oleaster, Olea europaea var. sylvestris (Mill.) Lehr., Oils from Different Locations of Northeast Portugal

2020 ◽  
Vol 10 (18) ◽  
pp. 6414
Author(s):  
Nuno Rodrigues ◽  
Teresa Pinho ◽  
Susana Casal ◽  
António M. Peres ◽  
Paula Baptista ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Olea Europaea ◽  
Genetic Material ◽  
Chemical Characterization ◽  
Olive Tree ◽  
Tocopherol Content ◽  
Oil Composition ◽  
Breeding Programs ◽  
Olea Europaéa

Oleaster (Olea europaea var. sylvestris), or the wild olive tree, has great interest as a source of genetic material for olive breeding programs. Nevertheless, information about its oil composition is scarce. In the present work, the characterization of oleaster fruit morphology and oil chemical composition from three different tree populations in Northeastern Portugal (Moncorvo, Alijó and Vila Nova de Foz Côa) was performed. The three studied populations presented some morphological differences in the fruits, but similar oil chemical composition. Oleic acid (68.9–70.6%) was the most abundant fatty acid. High variability was observed in total tocopherol content, ranging between 263 and 503 mg/kg. Additionally, high amounts of total sterols were found, from 1742 to 2198 mg/kg of oil. A rich composition in phenols was found with 14 phenolic compounds identified. The evaluated parameters for oleander oils allowed discriminating the oils according to the geographical origin and were consistent with those commonly found in olive oil, showing that they are particularly rich in antioxidants and can be exploited in breeding programs to increase the amounts of bioactive compounds in cultivated oils.

scholarly journals Chemical characterization of an Ipecac active germplasm bank – a Brazilian endangered medicinal species

2021 ◽  
Vol 10 (15) ◽  
Author(s):  
Nádia Elígia Nunes Pinto Paracampo ◽  
Luiz Ricardo Santos de Souza ◽  
Jéssica Caporal Almeida ◽  
Osmar Alves Lameira
Keyword(s):  
High Performance ◽  
Genetic Material ◽  
Chemical Characterization ◽  
Array Detector ◽  
Germplasm Bank ◽  
Medicinal Species ◽  
Breeding Programs ◽  
The City ◽  
Selection Of

The active germplasm bank (AGB) of Carapichea ipecacuanha (Brot.) L. Andersson at Embrapa Eastern Amazon, in the city of Belém, PA, was the first of its kind to be opened in Brazil for this endangered medicinal species and holds important accessions for agricultural and reproductive research, including the production of active principles. This study aimed to chemically characterize 42 accessions from that AGB by simultaneously quantifying cephaeline and emetine contents in roots using high-performance liquid chromatography with a diode-array detector (HPLC-DAD). Cephaeline concentrations ranged from ‘undetected’ to 1.76%, whereas emetine concentrations were found between 0.64% and 2.49%. The overall emetine/cephaeline ratio varied from 0.43 to 3.52. The differences among mean concentrations of alkaloids observed by comparing the Scott-Knott test at 5% probability suggest the chemical variation among the samples assessed. Therefore, it is concluded such chemical differences may favor the selection of genetic material for commercial purposes based on the production of emetine and/or cephaeline, likewise may contribute to breeding programs.

GENETIC CHARACTERIZATION OF OLIVE TREE (OLEA EUROPAEA L.) INTENDED FOR OIL PRODUCTION IN CORSICA

2002 ◽  
pp. 163-166 ◽  
Author(s):  
V. Bronzini de Caraffa ◽  
J. Maury ◽  
D. de Rocca Serra ◽  
J. Giannettini ◽  
G. Besnard
Keyword(s):  
Olea Europaea ◽  
Genetic Characterization ◽  
Oil Production ◽  
Olive Tree ◽  
Olea Europaea L ◽  
Olea Europaéa

scholarly journals Achievements and Challenges towards a Sustainable Conservation and Use of ‘Galega vulgar’ Olea europaea Variety

Agronomy ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1467
Author(s):  
Hélia Sales ◽  
João Nunes ◽  
Maria Carlota Vaz Patto
Keyword(s):  
Olive Oil ◽  
Olea Europaea ◽  
Production Systems ◽  
Oil Quality ◽  
Olive Tree ◽  
Life Cycle Thinking ◽  
Mediterranean Countries ◽  
Sustainable Conservation ◽  
Olea Europaéa

The cultivated Olea europaea L., or olive tree, is an ancient crop extremely relevant for the bioeconomy of Mediterranean countries, especially for Portugal. With orchard modernization, Portugal has the potential to become the third-largest producer of olive oil over the next decade. In this country, the main national variety is ‘Galega vulgar,’ characterized by an excellent olive oil quality, rusticity and tolerance to drought. Nevertheless, its production has suffered a reduction due to replacement by foreign varieties. The present narrative review offers an overall perspective of present gaps and challenges to the conservation and use of ‘Galega vulgar.’ Existing information about traditional and innovative olive production systems, and the importance of life cycle thinking approaches for a sustainable olive chain were synthesized, focusing particularly in the last 10 years. Furthermore, the olive molecular characterization advances and their breeding importance were also evaluated considering their application to this Portuguese variety. To ensure an efficient and sustainable exploitation of the ‘Galega vulgar,’ we propose that efforts should concentrate on the characterization of the existing variability and development of genotype to phenotype prediction tools, integrating detailed molecular marker genotypic and environmental characterization, to support better informed conservation and breeding decisions in a multi-environment context.

scholarly journals Development of EST-SSR annotated database in olive (Olea europaea)

2015 ◽  
Author(s):  
sami said adawy ◽  
morad mokhtar mokhtar ◽  
Alsamman Mahmoud Alsamman ◽  
Mahmoud m Sakr
Keyword(s):  
Olea Europaea ◽  
Carbon Fixation ◽  
Olive Tree ◽  
Genetic Identification ◽  
Set Cover ◽  
Dinucleotide Repeats ◽  
Breeding Programs ◽  
Polymorphism Detection ◽  
Photosynthetic Organism ◽  
Olea Europaéa

Olive tree (Olea europaea L.) is one of the most important oil producing crops in the world and the genetic identification of several genotypes by using molecular markers is the first step in its breeding programs. A set of 1,801 well-informative EST-SSR primers targeting specific Olive genes included in different biological processes and pathways were generated using 11,215 Olive EST sequences acquired from the NCBI database. Our bioinformatics analytical procedure showed that 8295 SSR motifs were detected which belonged to different motif types with occurrences of 77.6%, 11.84%, 8.62%, 0.84%, 0.77% and 0.29% for Mononucleotide, trinucleotide, dinucleotide, hexanucleotide, pentanucleotide and tetranucleotide respectively. The appearance of the AAG/CTT repeat was highly represented in trinucleotide and the representation of AG/CT was high in dinucleotide repeats. Results obtained from functional annotation of olives EST sequences targeted with our primers set indicated that 78.5% of these sequences having homology with known proteins, while 4.2% was homologous to hypothetical, predicted, unnamed or uncharacterized proteins and the 17.3% sequences did not possess homology with any known proteins. Our EST-SSR primer set cover a total of 92 biological pathways such as carbohydrate metabolism pathway, energy metabolism & carbon fixation in photosynthetic organism pathway including 11 pathways associated with lipid metabolism .A twenty five randomly selected primers were applied to 9 Egyptian cultivated olive accessions to test its amplification and polymorphism detection efficacy. All tested primers were successfully amplified and only 10 exhibited detectable polymorphism.

Identification and characterization of Alternaria alternata causing leaf spot of olive tree ( Olea europaea ) in Turkey

2017 ◽  
Vol 92 ◽  
pp. 79-88 ◽  
Author(s):  
Esin Basım ◽  
Hüseyin Basım ◽  
Muntala Abdulai ◽  
Derya Baki ◽  
Nurhan Öztürk
Keyword(s):  
Alternaria Alternata ◽  
Leaf Spot ◽  
Olea Europaea ◽  
Olive Tree ◽  
Identification And Characterization ◽  
Olea Europaéa

scholarly journals Nanotechnology in Roman Opaque Red Glass from the 2nd Century AD. Archaeometric Investigation in Red Sectilia from the Decoration of the Lucius Verus Villa in Rome

Heritage ◽  
2019 ◽  
Vol 2 (3) ◽  
pp. 2597-2611 ◽  
Author(s):  
Mario Bandiera ◽  
Patrice Lehuédé ◽  
Marco Verità ◽  
Luis Alves ◽  
Isabelle Biron ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Chemical Characterization ◽  
Second Step ◽  
Colorimetric Analysis ◽  
Historical Sources ◽  
Pixe Analysis ◽  
X Ray ◽  
Colorimetric Measurements ◽  
Shed Light

This work aims to characterise the chemical composition of Roman opaque red glass sectilia dated to the 2nd century A.D and to shed light on Roman glassmaking production of different shades of red, from red to reddish-brown. Due to the lack of technical historical sources for this period many questions about technological aspects still remain. In this project a multi-disciplinary approach is in progress to investigate the red glass sectilia with several red hues from the Imperial Villa of Lucius Verus (161–169 A.D.) in Rome. First, colorimetric measurements were taken to identify the various red hues. The second step was chemical characterization of the samples and the identification of crystalline colouring phases. Particle Induced X-Ray Emission (PIXE) analysis was used to investigate the chemical composition of these glass samples, while the crystalline phases were identified by Raman Spectroscopy and Scanning Electrons Microscope with Energy Dispersive X-ray Spectrometry (SEM-EDS). Using SEM-EDS nanoparticles were detected as a colouring agent, the chemical composition and the morphology of which has been studied in depth. This information has been compared with the colorimetric analysis to establish any correlation with the different colour hues.

EFFECT OF DIFFERENT IRRIGATION REGIMES ON OLIVE TREE (OLEA EUROPAEA L., 'KORONEIKI') PHYSIOLOGY, YIELD AND FRUIT QUALITY

2011 ◽  
pp. 89-94 ◽  
Author(s):  
G. Psarras ◽  
I. Kasapakis ◽  
E. Stefanoudaki ◽  
I. Papadakis ◽  
K.S. Chartzoulakis
Keyword(s):  
Fruit Quality ◽  
Olea Europaea ◽  
Olive Tree ◽  
Olea Europaea L ◽  
Irrigation Regimes ◽  
Olea Europaéa
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