Trans-2-hexenal/β-cyclodextrin effectively reduces green mold in citrus fruit

Zhang, Yonghua; Ouyang, Qi; Duan, Bin; Reymick, Okwong Oketch; Chen, Yue; Tan, Yuanzhen; Zhu, X.; Su, Donglin; Li, Gaoyang; Tao, Nengguo

doi:10.1016/j.postharvbio.2022.111871

Cited by 17 publications

(8 citation statements)

References 49 publications

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“…During the formation of inclusion complex (OCEO/βCD, OCEO/K-βCD-MOFs), the absorption bands of the host (βCD and K-βCD-MOFs) were changed either in position, intensity, and shape; also, the C-H stretching band was altered as shown in Figure 4. Similar studies [12,28] were indeed the procedure for inclusion of OCEO within βCD and K-βCD-MOFs.…”

Section: 22mentioning

confidence: 56%

Encapsulation of Origanum compactum Essential Oil in Beta-Cyclodextrin Metal Organic Frameworks: Characterization, Optimization, and Antioxidant Activity

Ez-zoubi

Annemer

Amrani

et al. 2023

Journal of Food Processing and Preservation

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The study is aimed at enhancing the physicochemical and antioxidant properties of encapsulated Origanum compactum essential oil (OCEO). In this context, a Clevenger apparatus was operated in the hydrodistillation process for O. compactum extraction, and the aroma profile of essential oil was investigated using GC/MS and GC/FID. The encapsulation process was based on beta-cyclodextrin (βCD) and metal organic frameworks (K-βCD-MOFs), analyzed by several techniques. Furthermore, the response surface design allows for improved encapsulation efficiency by optimizing OCEO/K-βCD-MOFs ( w / w ) and water/ethanol ratios ( v / v ). The antioxidant activity of the essential oil, both before and after the encapsulation, was evaluated through 1,1-diphenyl-2-picrylhydrazyl. As a result, the highest EE ( 35.34 ± 1.23 % ) was achieved in 1/12 and 4/5 for OCEO/K-βCD-MOFs and water/ethanol, respectively. The increase in thermal stability also occurred along with the encapsulation of O. compactum essential oil. Compared with the free form, the O. compactum essential oil encapsulated in K-βCD-MOFs gradually showed higher antioxidant activity.

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Section: 22mentioning

confidence: 56%

Encapsulation of Origanum compactum Essential Oil in Beta-Cyclodextrin Metal Organic Frameworks: Characterization, Optimization, and Antioxidant Activity

Ez-zoubi

Annemer

Amrani

et al. 2023

Journal of Food Processing and Preservation

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Section: Introductionmentioning

confidence: 99%

“…The search for alternative antifungal agents for the control of Penicillium digitatum in citrus fruits has recently focused on the use of plant essential oil components, such as cinnamaldehyde, citral, trans‐2‐hexenal, citronellal, octanal, decanal, α ‐terpineol, nonanal, limonene, γ ‐terpinene, and linalool (OuYang et al., 2020; Tao et al., 2014a, 2014b; Wu et al., 2016; Yuan et al., 2023; Zhang et al., 2022; Zheng et al., 2015). The essential oil components are believed to be safe, highly effective, and with limited ability to induce emergence of disease resistance (OuYang et al., 2020; Wu et al., 2016; Zhang et al., 2022). Their antifungal mechanisms against P. digitatum are diverse and include perturbation of the lipid fraction of plasma membrane to alter membrane permeability, downregulation of specific ergosterol genes, triggering oxidative stress, damaging mitochondrial membrane permeability, and disruption of energy metabolism processes (Ouyang et al., 2021; Reymick et al., 2022; Yuan et al., 2023; Zheng et al., 2015).…”

Section: Introductionmentioning

confidence: 99%

Cuminaldehyde downregulates folate metabolism and membrane proteins to inhibit growth of Penicillium digitatum in citrus fruit

Reymick,

Liu,

Tan

et al. 2024

Future Postharvest and Food

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In our previous study, cuminaldehyde triggered oxidative stress to inhibit growth of Penicillium digitatum in citrus fruit. Here, we examined the molecular mechanism by which it inhibited growth of P. digitatum. Results revealed a decline in content of glutathione and catalase activity from 10 and 20 min, respectively. Transcriptome and proteome data disclosed downregulation of proteins integral to mitochondrial electron transport chain (mETC) complexes I, IV, V, and transmembrane transporters. Catalase, regulators of transcription and replication, and biosynthesis of glutathione and folate were also downregulated. These were confirmed by RT‐qPCR analysis. Reduced expression of proteins integral to mETC complexes signaled possible damage to inner mitochondrial membrane. This was confirmed by decline in mitochondrial membrane potential with a concomitant decline in cellular ATP levels. mETC Complex I activity increased from 10 min which corresponded to the onset of rise in superoxide dismutase activity. The results suggest that cuminaldehyde instigated superoxide anion radicle production initially from mitochondrial complex I, while limiting the ability of the cells to scavenge the accumulating ROS by reducing the expression of glutathione and catalase. This was possibly achieved by downregulation of folate metabolism with the associated reduced expression of transcription regulators and proteins involved in glutathione biosynthesis.

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“…Previous studies have shown that plant essential oils and their antimicrobial components have significant inhibitory effects on many postharvest pathogenic fungi of citrus, such as G. citri - aurantii , Penicillium digitatum , and P. italicum , and that they have the advantages of safety, high efficiency, and low residue, which means they have the potential to control postharvest diseases in citrus [ 8 , 9 ]. Trans -2-hexenal is a volatile component of plant essential oil, which naturally exists in citronella oil, camphor oil, apples, and grapes.…”

Section: Introductionmentioning

confidence: 99%

“…Some studies have shown that trans -2-hexenal has good inhibitory effects against Colletotrichum acutatum , Alternaria alternata , P. cyclopium , P. expansum, and Botrytis cinerea [ 10 , 11 , 12 , 13 ]. In addition, trans -2-hexenal was also successfully applied in order to control postharvest diseases such as gray mold in tomato fruits, green mold in citrus fruits, and black rot in ‘Zaosu’ pears [ 9 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

Inhibitory Mechanisms of trans-2-Hexenal on the Growth of Geotrichum citri-aurantii

Ouyang,

Shi,

Liu

et al. 2023

JoF

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Geotrichum citri-aurantii (G. citri-aurantii) is one of the most important postharvest pathogens leading to a postharvest loss of citrus by causing sour rot. In this study, the antifungal activity of trans-2-hexenal, a natural component of essential oil, against G. citri-aurantii was evaluated. Trans-2-hexenal treatment inhibited the mycelia growth of G. citri-aurantii with a minimum inhibitory concentration and minimum fungicidal concentration of trans-2-hexenal at 0.50 and 1.00 μL/mL, respectively. Moreover, trans-2-hexenal efficiently reduced the incidence of sour rot of Satsuma fruit inoculated with G. citri-aurantii. Ultrastructural observations and Fourier transform infrared (FT−IR) results showed that trans-2-hexenal treatment affected the cell wall and cell membrane instructions of G. citri-aurantii. The content of β-1,3-glucan was significantly decreased after trans-2-hexenal treatment, but the cell wall permeability was not changed. The decrease in lipid and ergosterol contents might be responsible for this antifungal activity. Several important genes, FKS1, ERG1, ERG7, and ERG11, showed decreasing expression levels after trans-2-hexenal treatment. Molecule-docking results also indicated that trans-2-hexenal could join with the protein of FKS1, ERG1, ERG7, and ERG11 to impact enzyme activities. These results demonstrated that trans-2-hexenal is a promising fungicide for controlling sour rot of harvested citrus fruit by damaging the membrane integrity of G. citri-aurantii.

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Trans-2-hexenal/β-cyclodextrin effectively reduces green mold in citrus fruit

Cited by 17 publications

References 49 publications

Encapsulation of Origanum compactum Essential Oil in Beta-Cyclodextrin Metal Organic Frameworks: Characterization, Optimization, and Antioxidant Activity

Encapsulation of Origanum compactum Essential Oil in Beta-Cyclodextrin Metal Organic Frameworks: Characterization, Optimization, and Antioxidant Activity

Cuminaldehyde downregulates folate metabolism and membrane proteins to inhibit growth of Penicillium digitatum in citrus fruit

Inhibitory Mechanisms of trans-2-Hexenal on the Growth of Geotrichum citri-aurantii

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