Assessment of retention and persistence of copper fungicides on orange fruit and leaves using fluorometry and copper residue analyses

2012 ◽  
Vol 42 ◽  
pp. 1-9 ◽  
Author(s):  
Gerhardus C. Schutte ◽  
Charl Kotze ◽  
J. Gideon van Zyl ◽  
Paul H. Fourie
Keyword(s):  
Copper Fungicides ◽  
Orange Fruit

Efficacy of an antifungal edible coating for the quality maintenance of Tarocco orange fruit during cold storage

2021 ◽  
pp. 105719
Author(s):  
Maria Concetta Strano ◽  
Cristina Restuccia ◽  
Riccardo De Leo ◽  
Solidea Mangiameli ◽  
Elisa Bedin ◽  
...  
Keyword(s):  
Cold Storage ◽  
Edible Coating ◽  
Quality Maintenance ◽  
Orange Fruit

scholarly journals Thermal, Physical and Mechanical Performance of Orange Peel Boards: A New Recycled Material for Building Application

2021 ◽  
Vol 13 (14) ◽  
pp. 7945
Author(s):  
Matteo Vitale ◽  
María del Mar Barbero-Barrera ◽  
Santi Maria Cascone
Keyword(s):  
Thermal Conductivity ◽  
Bending Strength ◽  
Mechanical Performance ◽  
Orange Peel ◽  
Insulation Material ◽  
Orange Peels ◽  
Orange Fruit ◽  
Citrus Waste ◽  
Absorption Thickness ◽  
Loss Of Strength

More than 124 million tons of oranges are consumed in the world annually. Transformation of orange fruit generates a huge quantity of waste, largely composed of peels. Some attempts to reuse by-products derived from citrus waste have been proposed for energy production, nutrient source or pharmaceutical, food and cosmetic industries. However, their use in the building sector had not been researched. In this study, orange peels, in five different ratios, from 100% of wet peels to 75% and from 0% of dry peels to 25%, were submitted to a thermo-compression procedure. They were evaluated according to their physical (bulk density, water absorption, thickness swelling, surface soundness and thermal conductivity) and mechanical properties (bending strength and modulus of elasticity). The results showed that orange peels can be used as thermal insulation material. The addition of dried peels makes the structure of the board heterogeneous and thus increases its porosity and causes the loss of strength. Hence, the board with the sole use of wet peel, whose thermal conductivity is 0.065 W/mK while flexural strength is 0.09 MPa, is recommended.

scholarly journals Physical quality change in orange fruit (RGL variety): effects of different temperatures in storage

2021 ◽  
Vol 653 (1) ◽  
pp. 012142
Author(s):  
W Mikasari ◽  
I Calista ◽  
D Mussadad ◽  
E Fauzi ◽  
N Megawati ◽  
...  
Keyword(s):  
Quality Change ◽  
Physical Quality ◽  
Different Temperatures ◽  
Orange Fruit

Pectin methyl esterase from orange fruit: characterization and localization by in-situ hybridization and immunohistochemistry

Planta ◽  
1998 ◽  
Vol 206 (4) ◽  
pp. 493-503 ◽  
Author(s):  
Tove M. I. E. Christensen ◽  
John E. Nielsen ◽  
Jette D. Kreiberg ◽  
Preben Rasmussen ◽  
Jørn D. Mikkelsen
Keyword(s):  
In Situ Hybridization ◽  
Pectin Methyl Esterase ◽  
Orange Fruit

scholarly journals Development of PCR Assays for the Identification of Species and Pathotypes of Elsinoë Causing Scab on Citrus

Plant Disease ◽  
2007 ◽  
Vol 91 (7) ◽  
pp. 865-870 ◽  
Author(s):  
J. W. Hyun ◽  
N. A. Peres ◽  
S.-Y. Yi ◽  
L. W. Timmer ◽  
K. S. Kim ◽  
...  
Keyword(s):  
Internal Transcribed Spacer ◽  
Sweet Orange ◽  
Random Amplified Polymorphic Dna ◽  
Its Region ◽  
The United States ◽  
Specific Primer ◽  
Identification Of Species ◽  
Orange Fruit ◽  
Pcr Assays ◽  
Primer Sets

Two scab pathogens of citrus, Elsinoë fawcettii and E. australis, cause citrus scab and sweet orange scab, respectively, and pathotypes of each species have been described. The two species cannot be readily distinguished by morphological or cultural characteristics and can be distinguished only by host range and the sequence of the internal transcribed spacer (ITS) region. In this study, random amplified polymorphic DNA (RAPD) assays clearly distinguished E. fawcettii and E. australis, and the sweet orange and natsudaidai pathotypes within E. australis also could be differentiated. We developed specific primer sets, Efaw-1 for E. fawcettii; Eaut-1, Eaut-2, Eaut-3, and Eaut-4 for E. australis; and EaNat-1 and EaNat-2 for the natsudaidai pathotype within E. australis using RAPD products unique to each species or pathotype. Other primer sets, Efaw-2 and Eaut-5, which were specific for E. fawcettii and E. australis, respectively, were designed from previously determined ITS sequences. The Efaw-1 and Efaw-2 primer sets successfully identified E. fawcettii isolates from Korea, Australia, and the United States (Florida) and the Eaut-1 to Eaut-5 primer sets identified both the sweet orange pathotype isolates of E. australis from Argentina and the natsudaidai pathotype isolates from Korea. The EaNat-1 and EaNat-2 primer sets were specific for isolates of the natsudaidai pathotype. The Efaw-1 and Efaw-2 primer sets successfully detected E. fawcettii from lesions on diseased leaves and fruit from Korea and primer pairs Eaut-1, Eaut-2, Eaut-3, Eaut-4, and Eaut-5 detected E. australis from lesions on sweet orange fruit from Brazil.

scholarly journals Biochemical Changes in Orange Fruit Due to Plant – Penicillium italicum – Antagonism Interactions

2015 ◽  
Vol 43 (2) ◽  
pp. 413-419
Author(s):  
Rahil GHASEMI ◽  
Hasan Reza ETEBARIAN ◽  
Navazallah SAHEBANI ◽  
Heshmatolah AMINIAN
Keyword(s):  
Initial Result ◽  
Biochemical Changes ◽  
Economic Losses ◽  
Total Phenolic ◽  
Conidial Suspension ◽  
Penicillium Italicum ◽  
Orange Fruit ◽  
Pichia Kluyveri ◽  
Yeast Interactions ◽  
And Control

One of the most important orange fruit diseases is blue mold which cause by Penicillium italicum that is responsible for important economic losses. This study investigated biochemical changes in exo-mesocarp layers of orange fruits related to host- pathogen- yeast interactions. Initial result showed that among eight strains isolated, the most effective antagonist were belonged to two species of Pichia kluyveri (M45) and Rhodotorula mucilaginosa (M61). These isolates were selected for biochemical evaluation. In order to assessment of biochemical changes, the orange fruits were inoculated with 40 µl of yeast cell suspension and after 24 h, the wounds were inoculated with 20 µl of conidial suspension of P. italicum. The analysis of variance showed that all of the measured biochemical characterises were significant in both layers by treatments (yeast isolates; pathogen; yeast isolates + pathogen and control) (P ≤ 0.01), including POD, CAT and β-1, 3-glucanase activities and total phenolic compounds. Also result showed that when the yeast isolates (M45 or M54) were inoculated into wounds with the pathogen, it stimulated the orange to increase produce of total phenol and enzymes activity (POD, CAT and β-1, 3-glucanase) and these changes were related to incubation time. The result showed that understanding biochemical mechanism derived from plant-pathogen-antagonist interactions is essential for investigating the dynamics of infectious processes.

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