Nano-TiO₂ enhanced fruit storage chambers: unveiling the potential for prolonging banana shelf life

ABSTRACT

This manuscript focuses on the development of Fruit Storage Chamber (FSC) equipped with nano-TiO₂ and its modular prototype to improve the value of bamboo-based FSC by its photocatalytic and feasibility aspects. Its effects on fruit shelf life and ripening-related gene expression were studied. Cavendish bananas were stored in FSC equipped with nano-TiO₂ and modular FSC for treatments. Relative expression level of ethylene biosynthesis-related (MaACS1, MaACO1) and polyphenol oxidase (MaPPO4, MaPPO5) genes were examined. The dynamics of ripening variables throughout the storage period were illustrated in regression lines, followed with hypothesis testing. Banana quantity showed no significant changes upon storage in FSC equipped with nano-TiO₂. Physical appearance indicated a ripening delay of up to two days on nano-TiO₂ treatments compared to control. Ethylene production rate and ethylene related gene expression were not significantly altered. Browning index was more maintained in nano-TiO₂ treated samples, supported by the observation of slower increase of MaPPO4 and MaPPO5 relative expressions compared to control. The findings highlight the suppression of fruit ripening related gene expression and the maintenance of fruit quality in treated samples compared to control, indicating the potential use of nano-TiO₂ to prolong banana shelf life.

KEYWORDS:

• Enzymatic browning
• ethylene biosynthesis
• fruit storage chamber
• polyphenol oxidase
• postharvest technology
• titanium dioxide

Acknowledgements

The authors thank PT. Sewu Segar Nusantara for their help in providing banana samples and Muhammad Naufal Hakim for his assistance in statistical analysis.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Data availability statement

The data that support the findings of this study are available from the corresponding author, FMD, upon reasonable request.

Supplementary material

Supplemental data for this article can be accessed online at https://doi.org/10.1080/14620316.2024.2354778

Additional information

Funding

This work was supported by The Ministry of Research and Technology/National Research and Innovation Agency, Republic of Indonesia through Penelitian Terapan Unggulan Perguruan Tinggi 2021 programme under Grant Number 2/E1/KP.PTNBH/2021.