scholarly journals Semi-volatile compounds variation among Brazilian populations of Ilex paraguariensis St. Hil.

2008 ◽  
Vol 51 (1) ◽  
pp. 175-181 ◽  
Author(s):  
Rogério Luis Cansian ◽  
Altemir José Mossi ◽  
Márcio Mazutti ◽  
José Vladimir Oliveira ◽  
Natalia Paroul ◽  
...  
Keyword(s):  
Volatile Compounds ◽  
Geographical Origin ◽  
New Products ◽  
Ilex Paraguariensis ◽  
Food Industries ◽  
Carbon Dioxide Extraction ◽  
Native Populations ◽  
Different Populations ◽  
Chemical Distribution ◽  
Brazilian Populations

The use of compressed carbon towards extracting semi-volatile compounds present in maté leaves (Ilex paraguariensis St. Hil.) is due to the growing interest in mate constituents to develop new products in the cosmetic, pharmaceutical and food industries. The objective of this work was to assess the chemical distribution of semi-volatile compounds in 20 native populations of maté collected all over Brazil. The extracts of bulk samples (30 plants) of each population were obtained by the high-pressure carbon dioxide extraction technique, and analyzed by GC/MSD. The quantification of compounds (caffeine, theobromine, phytol, squalene, vitamin E, eicosane, pentatriacontane, and stigmasterol) showed significant variations within the different populations and compounds analyzed, which are not related to geographical origin or macroclimate characteristics. The results pointed out to the importance of genetic and local environmental factors on the chemical composition of this species.

scholarly journals The role of host promiscuity in the invasion process of a seaweed holobiont

2021 ◽  
Author(s):  
Guido Bonthond ◽  
Till Bayer ◽  
Stacy A. Krueger-Hadfield ◽  
Nadja Stärck ◽  
Gaoge Wang ◽  
...  
Keyword(s):  
Microbial Communities ◽  
Beta Diversity ◽  
Common Garden ◽  
Plant Invasions ◽  
Invasion Process ◽  
Microbial Succession ◽  
Invasive Seaweed ◽  
Native Populations ◽  
Important Trait ◽  
Different Populations

AbstractInvasive species are co-introduced with microbiota from their native range and also interact with microbiota found in the novel environment to which they are introduced. Host flexibility toward microbiota, or host promiscuity, is an important trait underlying terrestrial plant invasions. To test whether host promiscuity may be important in macroalgal invasions, we experimentally simulated an invasion in a common garden setting, using the widespread invasive macroalga Agarophyton vermiculophyllum as a model invasive seaweed holobiont. After disturbing the microbiota of individuals from native and non-native populations with antibiotics, we monitored the microbial succession trajectories in the presence of a new source of microbes. Microbial communities were strongly impacted by the treatment and changed compositionally and in terms of diversity but recovered functionally by the end of the experiment in most respects. Beta-diversity in disturbed holobionts strongly decreased, indicating that different populations configure more similar –or more common– microbial communities when exposed to the same conditions. This decline in beta-diversity occurred not only more rapidly, but was also more pronounced in non-native populations, while individuals from native populations retained communities more similar to those observed in the field. This study demonstrates that microbial communities of non-native A. vermiculophyllum are more flexibly adjusted to the environment and suggests that an intraspecific increase in host promiscuity has promoted the invasion process of A. vermiculophyllum. This phenomenon may be important among invasive macroalgal holobionts in general.

Geographical origin of Chinese wolfberry (goji) determined by carbon isotope analysis of specific volatile compounds

2019 ◽  
Vol 1105 ◽  
pp. 104-112 ◽  
Author(s):  
Jing Meng ◽  
Zhi Liu ◽  
Chun-Lin Gou ◽  
Karyne M. Rogers ◽  
Wen-Juan Yu ◽  
...  
Keyword(s):  
Volatile Compounds ◽  
Carbon Isotope ◽  
Geographical Origin ◽  
Isotope Analysis ◽  
Carbon Isotope Analysis

scholarly journals Genetic diversity in Brazilian tall coconut populations by microsatellite markers

2013 ◽  
Vol 13 (4) ◽  
pp. 356-362 ◽  
Author(s):  
Francisco Elias Ribeiro ◽  
Luc Baudouin ◽  
Patricia Lebrun ◽  
Lázaro José Chaves ◽  
Claudio Brondani ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Microsatellite Markers ◽  
Cape Verde ◽  
Coconut Palm ◽  
Different Populations ◽  
The Mean ◽  
High Level ◽  
Brazilian Populations

The tall coconut palm was introduced in Brazil in 1553, originating from the island of Cape Verde. The aim of the present study was to evaluate the genetic diversity of ten populations of Brazilian tall coconut by 13 microsatellite markers. Samples were collected from 195 individuals of 10 different populations. A total of 68 alleles were detected, with an average of 5.23 alleles per locus. The mean expected and observed heterozygosity value was 0.459 and 0.443, respectively. The number of alleles per population ranged from 36 to 48, with a mean of 40.9 alleles. We observed the formation of two groups, the first formed by the populations of Baía Formosa, Georgino Avelino and São José do Mipibu, and the second by the populations of Japoatã, Pacatuba and Praia do Forte. These results reveal a high level of genetic diversity in the Brazilian populations.

Testing mate recognition through reciprocal crosses of two native populations of the whitefly Bemisia tabaci (Gennadius) in Australia

2019 ◽  
Vol 110 (3) ◽  
pp. 328-339 ◽  
Author(s):  
W. Wongnikong ◽  
S. L. van Brunschot ◽  
J. P. Hereward ◽  
P. J. De Barro ◽  
G. H. Walter
Keyword(s):  
Bemisia Tabaci ◽  
Critical Role ◽  
Mate Recognition ◽  
Distinct Species ◽  
Species Status ◽  
Female Progeny ◽  
Native Populations ◽  
Different Populations ◽  
The Individual ◽  
Mating Tests

AbstractBemisia tabaci (Gennadius) represents a relatively large cryptic species complex. Australia has at least two native populations of B. tabaci sensu lato and these were first found on different host plants in different parts of Australia. The species status of these populations has not been resolved, although their mitochondrial sequences differ by 3.82–4.20%. We addressed the question of whether these AUSI and AUSII B. tabaci populations are distinct species. We used reciprocal cross-mating tests to establish whether the insects from these different populations recognize one another as potential mating partners. The results show that the two native Australian populations of B. tabaci have a mating sequence with four phases, each of which is described. Not all pairs in the control crosses mated and the frequency of mating differed across them. Some pairs in the AUSI-M × AUSII-F did mate (15%) and did produce female progeny, but the frequency was extremely low relative to controls. Microsatellite genotyping of the female progeny produced in the crosses showed these matings were successful. None of the AUSII-M × AUSI-F crosses mated although some of the males did search for females. These results demonstrate the critical role of the mate recognition process and the need to assess this directly in cross-mating tests if the species status of different populations is to be tested realistically. In short, AUSI and AUSII B. tabaci populations are distinct species because the individual males and females do not recognize individuals of the alternative population as potential mating partners.

scholarly journals Valorization of Prickly Pear Juice Geographical Origin Based on Mineral and Volatile Compound Contents Using LDA

Foods ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 123 ◽  
Author(s):  
Vassilios K. Karabagias ◽  
Ioannis K. Karabagias ◽  
Artemis Louppis ◽  
Anastasia Badeka ◽  
Michael G. Kontominas ◽  
...  
Keyword(s):  
Volatile Compounds ◽  
Inductively Coupled Plasma ◽  
Mineral Content ◽  
Geographical Origin ◽  
Solid Phase ◽  
Atomic Emission ◽  
Prickly Pear ◽  
Gas Chromatography Mass Spectrometry ◽  
Icp Oes ◽  
Pear Juice

In the present work the mineral content and volatile profile of prickly pear juice prepared from wild cultivars was investigated. Fruits used in the study originated from three areas of the Peloponnese Peninsula. Twenty-five macro- and micro-minerals (K, Na, P, Ca, Mg, Al, B, Ba, Be, Co, Cr, Cu, Fe, Li, Mn, Mo, Ni, Sb, Se, Si, Sn, Ti, Tl, V, Zn) were determined using inductively coupled plasma atomic emission spectroscopy (ICP-OES). Furthermore, analysis of the mineral content of soil samples with ICP-OES showed a perfect correlation with those of fruit juices. Volatile compounds (alcohols, aldehydes, hydrocarbons, terpenoids, and others) were identified using an optimized headspace solid phase microextraction coupled to gas chromatography mass spectrometry (HS-SPME/GC-MS) method. Multivariate analysis showed significant differences (p < 0.05) among the investigated parameters with respect to juice geographical origin. Prickly pear juice samples were classified according to geographical origin by 85.7% and 88.9% using 7 minerals and 21 volatile compounds, respectively.

Tracing the geographical origin of honeys based on volatile compounds profiles assessment using pattern recognition techniques

2010 ◽  
Vol 118 (1) ◽  
pp. 171-176 ◽  
Author(s):  
I. Stanimirova ◽  
B. Üstün ◽  
T. Cajka ◽  
K. Riddelova ◽  
J. Hajslova ◽  
...  
Keyword(s):  
Pattern Recognition ◽  
Volatile Compounds ◽  
Geographical Origin ◽  
Pattern Recognition Techniques

scholarly journals Applicability of bolton’s tooth size ratios among mediterranean, japanese and japanese-brazilian populations

2017 ◽  
Vol 15 (4) ◽  
pp. 269 ◽  
Author(s):  
Karine Laskos Sakoda ◽  
Arnaldo Pinzan ◽  
Guilherme Janson ◽  
Sérgio Elias Neves Cury
Keyword(s):  
T Test ◽  
Brazilian Population ◽  
Tooth Size ◽  
Normal Occlusion ◽  
Different Populations ◽  
Untreated Individuals ◽  
Dental Cast ◽  
Japanese Ancestry ◽  
Digital Caliper ◽  
Brazilian Populations

Objective: The aim of this study was to determine if Bolton’s tooth size ratios can be applied to Mediterranean, Japanese and Japanese-Brazilian populations. Materials and methods: The sample comprised 90 pairs of dental casts of untreated individuals with normal occlusion, divided into 3 groups according to ethnical characteristics: White (30 Mediterranean descendant subjects, with a mean age of 13.64 years), Japanese (30 subjects with Japanese ancestry, with a mean age of 15.63 years)  and Japanese-Brazilian (30 Japanese-Brazilian subjects, with a mean age of 13.96 years). A digital caliper was used to measure the maxillary and mandibular mesiodistal widths from first molar to first molar on each dental cast. The anterior and overall tooth size ratios were calculated. T test was applied for comparisons between Bolton standards and the ethnical groups for anterior and overall ratios. Results: Only the Japanese-Brazilian group showed significantly greater ratios than Bolton standards. Conclusion: It was concluded that Bolton’s ratios are not applicable to the Japanese-Brazilian population. Therefore, it is suggested that Bolton’s ratios may not be suitable for different populations.

scholarly journals Compositional analysis of malanga (Xanthosoma sagittifolium), Chinese potato (Colocasia esculenta) and potato (Solanum tuberosum) for the utilization in the snack’s elaboration by conventional fried

Bionatura ◽  
2019 ◽  
Vol 4 (4) ◽  
pp. 983-985
Author(s):  
Romero Alisson ◽  
Herrera Byron A. ◽  
Moposita Diego D. ◽  
Palacios Dayana S. ◽  
Núñez Darwin A ◽  
...  
Keyword(s):  
Solanum Tuberosum ◽  
Protein Content ◽  
New Products ◽  
Compositional Analysis ◽  
Colocasia Esculenta ◽  
Food Industries ◽  
Tukey Test ◽  
Xanthosoma Sagittifolium

The objective of the present study was to compare the compositional analyze of three types of tubers, like traditional potatoes (Solanum tuberosum) and two of them that come from untraditional like Malanga (Xanthosoma saggitifolium) and papa china (Colocasia esculenta), crops that in Ecuador aren’t used for the snacks making. The evaluated components in the primordial matter and finished material were: protein content, grease, ashes, humidity, fiber, and carbohydrates, all of them were evaluated by official methods of analyze. The experiment was realized three times for each prove. It was used a program SPSS version 23, applying a variance followed by a Tukey test (p<0,05) with the objective of determinate some meaning statistics for deviation of tubers ways of Malanga that has a significant content of protein and carbohydrates and energetic adds were higher in comparison of the traditional snacks, these results are an alternative for the consumer and the development of new products for the food industries.

scholarly journals Hesitant or Not Hesitant? A Systematic Review on Global COVID-19 Vaccine Acceptance in Different Populations

Vaccines ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 873
Author(s):  
Maria Giulia Salomoni ◽  
Zeno Di Valerio ◽  
Elisa Gabrielli ◽  
Marco Montalti ◽  
Dario Tedesco ◽  
...  
Keyword(s):  
Systematic Review ◽  
Geographical Origin ◽  
Vaccine Hesitancy ◽  
Vaccine Acceptance ◽  
Public Health Systems ◽  
Pubmed Database ◽  
Collection Data ◽  
Different Populations ◽  
Acceptance Rates ◽  
Study Setting

Vaccination currently appears to be the only strategy to contain the spread of COVID-19. At the same time, vaccine hesitancy (VH) could limit its efficacy and has, therefore, attracted the attention of Public Health Systems. This systematic review aimed at assessing anti-COVID-19 vaccine acceptance rates worldwide and at identifying populations more prone to vaccine hesitancy, for which specific interventions should be planned. PubMed database was searched using a purposely formulated string. One hundred out of the 9243 studies retrieved were considered pertinent and thus included in the analyses. VH rate was analyzed according to patient geographical origin, ethnicity, age, study setting, and method used for data collection; data from specific populations were separately analyzed. Overall, this study demonstrated significant differences in terms of VH in the general population and in the specific subgroups examined according to geographical, demographic factors, as well as associated comorbidities, underlining the need for purposely designed studies in specific populations from the different countries, to design targeted programs aimed at increasing awareness for confidence and complacency toward COVID-19 vaccines.

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