Eugenunilones A-H: Rearranged Sesquiterpenoids from Eugenia uniflora

2022 ◽  
Author(s):  
Mu Chen ◽  
Jia-Qing Cao ◽  
Song Ang ◽  
Ting-Ni Zeng ◽  
Ni-Ping Li ◽  
...  
Keyword(s):  
Eugenia Uniflora

Six rearranged sesquiterpenoid dimers and monomers with four kinds of new skeletons, meso-eugenunilone A (meso-1), (+)- and (-)-eugenunilones B-F [(+)-and (-)-2-6], along with two new biogenetically related members (+)- and...

Evaluation of Antibacterial and Antidiabetic Potential of Silver Nanoparticles using Eugenia Uniflora L. Seed Extract

2020 ◽  
Vol 13 (6) ◽  
pp. 5217-5225
Author(s):  
Guru Kumar Dugganaboyana ◽  
Chethankumar Mukunda ◽  
Suresh Darshini Inakanally
Keyword(s):  
Biomedical Applications ◽  
Pathogenic Bacteria ◽  
Seed Extract ◽  
Drug Formulation ◽  
Visible Spectroscopy ◽  
Plant Materials ◽  
X Ray ◽  
Eugenia Uniflora ◽  
Uv Visible

In recent years, green nanotechnology-based approaches using plant materials have been accepted as an environmentally friendly and cost-effective approach with various biomedical applications. In the current study, AgNPs were synthesized using the seed extract of the Eugenia uniflora L. (E.uniflora). Characterization was done using UV-Visible spectroscopy, X-ray diffraction (XRD), scanning electronic microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX) analyses. The formation of AgNPs has confirmed through UV-Visible spectroscopy (at 466 nm) by the change of color owing to surface Plasmon resonance. Based on the XRD pattern, the crystalline property of AgNPs was established. The functional group existing in seed of E.uniflora extract accountable for the reduction of Ag+ ion and the stabilization of AgNPs was investigated. The morphological structures and elemental composition was determined by SEM and EDX analysis. With the growing application of AgNPs in biomedical perspectives, the biosynthesized AgNPs were evaluated for their antibacterial and along with their antidiabetic potential. The results showed that AgNPs are extremely effective with potent antidiabetic potential at a very low concentration. It also exhibited potential antibacterial activity against the three tested human pathogenic bacteria. Overall, the results highlight the effectiveness and potential applications of AgNPs in biomedical fields such as in the treatment of acute illnesses as well as in drug formulation for treating various diseases such as cancer and diabetes. It could be concluded that E. uniflora seed extract AgNPs can be used efficiently for in vitro evaluation of their antibacterial and antidiabetic effects with potent biomedical applications.

Cell wall break down of pitanga fruit ( Eugenia uniflora L.) is associated to pectic solubilization and softening

2021 ◽  
Author(s):  
Ana Lázara Matos de Oliveira ◽  
Daiana Ribeiro Vilela ◽  
Elídio Zaidine Maurício Zitha ◽  
Hanna Elisia Araújo de Barros ◽  
Rafael Carvalho do Lago ◽  
...  
Keyword(s):  
Cell Wall ◽  
Eugenia Uniflora

Metabolic and physiological alterations indicate that the tropical broadleaf tree Eugenia uniflora L. is sensitive to ozone

2021 ◽  
Vol 769 ◽  
pp. 145080
Author(s):  
Marcela Regina Gonçalves da Silva Engela ◽  
Claudia Maria Furlan ◽  
Marisia Pannia Esposito ◽  
Francine Faia Fernandes ◽  
Elisa Carrari ◽  
...  
Keyword(s):  
Eugenia Uniflora ◽  
Physiological Alterations ◽  
Broadleaf Tree

Advances in the purple-fruited pitanga (Eugenia uniflora) long-term breeding program in Hawai’I, USA

2018 ◽  
pp. 931-940 ◽  
Author(s):  
J.L. Griffis ◽  
T.G. McDonald ◽  
M.M. Manners ◽  
Ö. Tuncay
Keyword(s):  
Breeding Program ◽  
Eugenia Uniflora

scholarly journals Adjustment of the methodology of the tetrazolium test for estimating viability of Eugenia uniflora L. seeds during storage

2014 ◽  
Vol 36 (3) ◽  
pp. 344-351 ◽  
Author(s):  
Daiana Karoline Kaiser ◽  
Laura Cristiane Nascimento de Freitas ◽  
Rubia Priscila Biron ◽  
Simone Cristina Simonato ◽  
Michele Fernanda Bortolini
Keyword(s):  
Seed Viability ◽  
Germination Test ◽  
Preparation Methods ◽  
Eugenia Uniflora ◽  
Paper Towel ◽  
Plastic Bags ◽  
Longitudinal Cutting ◽  
Direct Immersion ◽  
Tetrazolium Test

The study aimed to adjust the methodology of the tetrazolium test to estimate seed viability of Eugenia uniflora L. (Surinam Cherry). Seeds were collected in September 2012 and divided into four lots: freshly harvested (Lot I); stored in plastic bags in a refrigerator at 10 °C for: 15 days (Lot II); 30 days (Lot III); and 45 days (Lot IV). The freshly harvested seeds were preconditioned with direct immersion in water and wet paper towel, followed or not by longitudinal cutting. The seeds were immersed in a 0.1% tetrazolium solution for 4 hours at 30 °C. Appropriate soaking and preparation methods were applied to the seeds lots using three tetrazolium concentrations: 0.1; 0.5; and 1.0%; and four preconditioning periods (2, 4, 6 and 8 hours) at 30 °C. The viability results obtained by the tetrazolium test were compared with those of the germination test. Direct immersion of seeds in water for 24 hours at 25 °C, followed by a longitudinal cut was efficient for preconditioning the seeds. Seed staining with tetrazolium solution at a concentration of 0.5% for 2 hours at 30 °C can be used to estimate the viability of freshly harvested and stored Surinam Cherry seeds.

scholarly journals New gall midges (Diptera, Cecidomyiidae) associated with Eugenia uniflora and Psidium cattleianum (Myrtaceae)

2011 ◽  
Vol 101 (1-2) ◽  
pp. 69-74 ◽  
Author(s):  
Valéria C Maia ◽  
Dori E Nava
Keyword(s):  
New Species ◽  
New Genus ◽  
Gall Midges ◽  
Eugenia Uniflora ◽  
Psidium Cattleianum ◽  
Two New Species

Two new species and a new genus of gall midges (Diptera, Cecidomyiidae) are described and illustrated. Both species induce leaf galls on Myrtaceae, the former on Eugenia uniflora and the latter on Psidium cattleianum.

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