Paper · 2025 · PLoS ONE

Nano formulation development and antibacterial activity of cinnamon bark extract-chitosan composites against Burkholderia Glumae the causative agent of Bacterial Panicle Blight in rice

Qamar Mohammed-Naji; Dzarifah Zulperi; Khairulmazmi Ahmad; et al.

7
claims
17
verbatim quotes
2
citations
3
research areas
✓
Open access · cc-by

Abstract

Bacterial panicle blight (BPB) disease, caused by Burkholderia glumae, poses a significant threat to rice production. Conventional chemical control methods contribute to environmental concerns and resistance issues, necessitating the development of sustainable alternatives. This study aimed to formulate and evaluate cinnamon bark extract-chitosan (CBE- CS) nano formulations for antibacterial efficacy against Burkholderia glumae. First, the antibacterial activity of cinnamon bark extract (CBE) was assessed, revealing a minimum inhibitory concentration (MIC) of 6.25 μg/mL and a minimum bactericidal concentration (MBC) of 12.5 μg/mL. Morphological analysis using scanning electron microscopy (SEM), confocal laser scanning microscopy (CLSM), and transmission electron microscopy (TEM) showed significant bacterial cell wall damage, cytoplasmic leakage, and structural degradation after treatment. Chemical characterization of CBE using gas chromatography-mass spectrometry (GC-MS) and Fourier transform infrared spectroscopy (FTIR) identified key active compounds, with (Z)-3- phenylacryldehyde as the major component (51.24%). Next, nano formulations of CBE-CS were developed, and their physicochemical properties were characterized, including particle size, zeta potential, encapsulation efficiency (33.9%), and loading capacity (48.78%). Antibacterial assessments demonstrated that the nano formulations effectively inhibited Burkholderia. glumae. Finally, greenhouse trials on rice seedlings confirmed the efficacy of these nano formulations in controlling BPB disease, showing significant bacterial suppression and improved plant health. These findings suggest that CBE-CS nanoparticles offer a promising, eco-friendly alternative for managing bacterial blight in rice, providing both effective antibacterial activity and enhanced plant protection.

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Claims 7

Observationobservedoriginal resultmeasured

Claim · model-written summary

Cinnamon bark extract has a minimum inhibitory concentration of 6.25 μg/mL against Burkholderia glumae.

Interactor
Burkholderia glumaeBurkholderia glumaee0pathogen
Outcome
minimum inhibitory concentratione1
Value
6.25 μg/mLe1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗
Burkholderia glumae
Burkholderia glumae · InteractorFelipeveraruiz · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“revealing a minimum inhibitory concentration (MIC) of 6.25 μg/mL and a minimum bactericidal concentration (MBC) of 12.5 μg/mL”

✓ located verbatim in the source · abstract, characters 512–637 · show in text ↑
e0

“Bacterial panicle blight (BPB) disease, caused by Burkholderia glumae”

✓ located verbatim in the source · abstract, characters 0–69 · show in text ↑
t0

“Bacterial Panicle Blight in rice”

✓ located verbatim in the source · title, characters 152–184 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Cinnamon bark extract has a minimum bactericidal concentration of 12.5 μg/mL against Burkholderia glumae.

Interactor
Burkholderia glumaeBurkholderia glumaee0pathogen
Outcome
minimum bactericidal concentratione1
Value
12.5 μg/mLe1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗
Burkholderia glumae
Burkholderia glumae · InteractorFelipeveraruiz · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“revealing a minimum inhibitory concentration (MIC) of 6.25 μg/mL and a minimum bactericidal concentration (MBC) of 12.5 μg/mL”

✓ located verbatim in the source · abstract, characters 512–637 · show in text ↑
e0

“Bacterial panicle blight (BPB) disease, caused by Burkholderia glumae”

✓ located verbatim in the source · abstract, characters 0–69 · show in text ↑
t0

“Bacterial Panicle Blight in rice”

✓ located verbatim in the source · title, characters 152–184 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Cinnamon bark extract damaged bacterial cell walls of Burkholderia glumae, causing cytoplasmic leakage and structural degradation.

Interactor
Burkholderia glumaeBurkholderia glumaee0pathogen
Outcome
bacterial cell wall damagee6

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗
Burkholderia glumae
Burkholderia glumae · InteractorFelipeveraruiz · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e6

“showed significant bacterial cell wall damage, cytoplasmic leakage, and structural degradation after treatment”

✓ located verbatim in the source · abstract, characters 790–900 · show in text ↑
e0

“Bacterial panicle blight (BPB) disease, caused by Burkholderia glumae”

✓ located verbatim in the source · abstract, characters 0–69 · show in text ↑
t0

“Bacterial Panicle Blight in rice”

✓ located verbatim in the source · title, characters 152–184 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

(Z)-3-phenylacryldehyde was the major component of cinnamon bark extract at 51.24%.

Compound
(Z)-3- phenylacryldehydee3
Outcome
major componente3
Value
51.24%e3

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e3

“with (Z)-3- phenylacryldehyde as the major component (51.24%)”

✓ located verbatim in the source · abstract, characters 1070–1131 · show in text ↑
t0

“Bacterial Panicle Blight in rice”

✓ located verbatim in the source · title, characters 152–184 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

CBE-CS nano formulation has an encapsulation efficiency of 33.9%.

Outcome
encapsulation efficiencye4
Value
33.9%e4

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e4

“including particle size, zeta potential, encapsulation efficiency (33.9%), and loading capacity (48.78%)”

✓ located verbatim in the source · abstract, characters 1240–1344 · show in text ↑
t0

“Bacterial Panicle Blight in rice”

✓ located verbatim in the source · title, characters 152–184 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

CBE-CS nano formulation has a loading capacity of 48.78%.

Outcome
loading capacitye4
Value
48.78%e4

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e4

“including particle size, zeta potential, encapsulation efficiency (33.9%), and loading capacity (48.78%)”

✓ located verbatim in the source · abstract, characters 1240–1344 · show in text ↑
t0

“Bacterial Panicle Blight in rice”

✓ located verbatim in the source · title, characters 152–184 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Greenhouse trials on rice seedlings showed that CBE-CS nano formulations controlled bacterial panicle blight.

Treatment
nano formulationse5
Interactor
Burkholderia glumaeBurkholderia glumaee0pathogen
Outcome
BPB diseasee5
Direction
decreaseinferrede5
Setting
greenhouse trialse5

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗
Burkholderia glumae
Burkholderia glumae · InteractorFelipeveraruiz · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e5

“greenhouse trials on rice seedlings confirmed the efficacy of these nano formulations in controlling BPB disease”

✓ located verbatim in the source · abstract, characters 1465–1577 · show in text ↑
e0

“Bacterial panicle blight (BPB) disease, caused by Burkholderia glumae”

✓ located verbatim in the source · abstract, characters 0–69 · show in text ↑

nanoparticle · Burkholderia glumae · Oryza sativa (rice)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.