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פותח על ידי קלירמאש פתרונות בע"מ -
Single cell encapsulation in a Pickering emulsion stabilized by TiO 2 nanoparticles provides protection against UV radiation for a biopesticide
Year:
2021
Authors :
אננט מאני, קרטיק
;
.
בלאוסוב, אדוארד
;
.
יעקב, נוגה
;
.
מחרז, גיא
;
.
מטבייב, סבינה
;
.
מנט, דנה
;
.
פלדבאום, רעות
;
.
קולטאי, חננית
;
.
Volume :
Co-Authors:

Reut Amar Feldbaum
Noga Yaakov
Ananth Mani
Eden Yossef 
Sabina Metbeev 
Einat Zelinger 
Eduard Belausov 
Hinanit Koltai 
Dana Ment 
Guy Mechrez                

Facilitators :
From page:
0
To page:
0
(
Total pages:
1
)
Abstract:

A new formulation for biological pest control with significant UV protection capability has been developed in this research. The formulation is based on individual encapsulation of fungal conidia in an oil/water Pickering emulsion. The droplets size of the emulsions was tuned to meet the demands of single conidia encapsulation in the oil droplets. The emulsions are stabilized by amine-functionalized TiO2 (titania) nanoparticles (NPs). The droplet size, stability, and structure of the emulsions were investigated at different TiO2 contents and oil/water phase ratios. Most of the emulsions remained stable for 6 months. The structural properties of the Pickering emulsions were characterized by confocal microscopy and high-resolution cryogenic scanning electron microscopy (cryo-HRSEM). The presence of the TiO2 particles at the interface was confirmed by both confocal microscopy and cryo-HRSEM. Metarhizium brunneum-7 (Mb7) conidia were added to the emulsions. The successful encapsulation of individual conidia in the oil droplets was confirmed by confocal microscopy. The individual encapsulation of the conidia in the emulsions was significantly improved by dispersing the conidia in a 0.02 % Triton X-100 solution prior to emulsification. In addition, the bioassay results have shown, that exposure of the encapsulated conidia to natural UV light did not change their germination rates, however, the unprotected conidia demonstrated a dramatic decrease in their germination rates. These results confirm the UV protection capability of the studied emulsions.

Note:
Related Files :
Biopesticides
Conidia
Metarhizium brunneum
Pickering emulsions
Single-cell encapsulation
TiO(2)
UV radiation
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/j.colsurfb.2021.111958
Article number:
0
Affiliations:
Database:
PubMed
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
55524
Last updated date:
02/03/2022 17:27
Creation date:
11/07/2021 17:21
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Scientific Publication
Single cell encapsulation in a Pickering emulsion stabilized by TiO 2 nanoparticles provides protection against UV radiation for a biopesticide

Reut Amar Feldbaum
Noga Yaakov
Ananth Mani
Eden Yossef 
Sabina Metbeev 
Einat Zelinger 
Eduard Belausov 
Hinanit Koltai 
Dana Ment 
Guy Mechrez                

Single cell encapsulation in a Pickering emulsion stabilized by TiO 2 nanoparticles provides protection against UV radiation for a biopesticide

A new formulation for biological pest control with significant UV protection capability has been developed in this research. The formulation is based on individual encapsulation of fungal conidia in an oil/water Pickering emulsion. The droplets size of the emulsions was tuned to meet the demands of single conidia encapsulation in the oil droplets. The emulsions are stabilized by amine-functionalized TiO2 (titania) nanoparticles (NPs). The droplet size, stability, and structure of the emulsions were investigated at different TiO2 contents and oil/water phase ratios. Most of the emulsions remained stable for 6 months. The structural properties of the Pickering emulsions were characterized by confocal microscopy and high-resolution cryogenic scanning electron microscopy (cryo-HRSEM). The presence of the TiO2 particles at the interface was confirmed by both confocal microscopy and cryo-HRSEM. Metarhizium brunneum-7 (Mb7) conidia were added to the emulsions. The successful encapsulation of individual conidia in the oil droplets was confirmed by confocal microscopy. The individual encapsulation of the conidia in the emulsions was significantly improved by dispersing the conidia in a 0.02 % Triton X-100 solution prior to emulsification. In addition, the bioassay results have shown, that exposure of the encapsulated conidia to natural UV light did not change their germination rates, however, the unprotected conidia demonstrated a dramatic decrease in their germination rates. These results confirm the UV protection capability of the studied emulsions.

Scientific Publication
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