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Quaternized chitosan as a biopolymer sanitizer for leafy vegetables: synthesis, characteristics, and traditional vs. dry nano-aerosol applications
Year:
2022
Source of publication :
Food Chemistry
Authors :
Fallik, Elazar
;
.
Poverenov, Elena
;
.
Rodov, Victor
;
.
Volume :
378
Co-Authors:

Yael Cohen
Esther Mwangi
Nimrod Tish
Jie Xu
Nachiket D. Vaze
Tal Klingbell
Elazar Fallik
Yaguang Luo
Philip Demokritou
Victor Rodov
Elena Poverenov

Facilitators :
From page:
1
To page:
11
(
Total pages:
11
)
Abstract:

A series of quaternary dimethyl-(alkyl)-ammonium chitosan derivatives (QACs) was synthesized and studied for physicochemical properties and bioactivity. The QACs tended to spontaneously self-assembly into nanoaggregates. Antimicrobial activity was examined in vitro on Gram-negative Escherichia coli (E. coli) and Gram-positive Listeria innocua (L. innocua) bacteria as well as phytopathogenic fungus Botrytis cinerea. The hexyl chain-substituted QAC-6 demonstrated the highest potency causing 3.0- and 4.5-log CFU mL-1 reduction of E. coli and L. innocua, respectively. QAC-6 was tested for antimicrobial activity on stainless steel coupons and fresh spinach leaves. A traditional ‘wet’ application (spray) and dry Engineered Water Nanostructure (EWNS) approach were used for spinach decontamination. With both approaches, significant reduction of microbial load on the treated produce was achieved. The wet application showed a greater reduction of microbial load, while the advantages of EWNS were reaching the antimicrobial effect with miniscule dose of active agent leaving treated surface visibly dry.

Note:
Related Files :
Botrytis cinerea
Chitosan
Engineered Water Nanostructures
Escherichia coli
Listeria innocua
spinach
Show More
Related Content
More details
DOI :
10.1016/j.foodchem.2022.132056
Article number:
132056
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
57912
Last updated date:
02/03/2022 17:27
Creation date:
14/02/2022 14:46
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Scientific Publication
Quaternized chitosan as a biopolymer sanitizer for leafy vegetables: synthesis, characteristics, and traditional vs. dry nano-aerosol applications
378

Yael Cohen
Esther Mwangi
Nimrod Tish
Jie Xu
Nachiket D. Vaze
Tal Klingbell
Elazar Fallik
Yaguang Luo
Philip Demokritou
Victor Rodov
Elena Poverenov

Quaternized chitosan as a biopolymer sanitizer for leafy vegetables: synthesis, characteristics, and traditional vs. dry nano-aerosol applications

A series of quaternary dimethyl-(alkyl)-ammonium chitosan derivatives (QACs) was synthesized and studied for physicochemical properties and bioactivity. The QACs tended to spontaneously self-assembly into nanoaggregates. Antimicrobial activity was examined in vitro on Gram-negative Escherichia coli (E. coli) and Gram-positive Listeria innocua (L. innocua) bacteria as well as phytopathogenic fungus Botrytis cinerea. The hexyl chain-substituted QAC-6 demonstrated the highest potency causing 3.0- and 4.5-log CFU mL-1 reduction of E. coli and L. innocua, respectively. QAC-6 was tested for antimicrobial activity on stainless steel coupons and fresh spinach leaves. A traditional ‘wet’ application (spray) and dry Engineered Water Nanostructure (EWNS) approach were used for spinach decontamination. With both approaches, significant reduction of microbial load on the treated produce was achieved. The wet application showed a greater reduction of microbial load, while the advantages of EWNS were reaching the antimicrobial effect with miniscule dose of active agent leaving treated surface visibly dry.

Scientific Publication
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