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Article

Seagrass-Derived Cellulose/Collagen Composite Coating for Enhanced Tomato Shelf Life and Postharvest Quality

by
Senthilkumar Palanisamy
1,*,
Kokila Saravanan
2,
Jishna Jabbar
2,
Rahul Jacob Michael
2,
Barani Kumar Saravana Kumar
2,
Jintae Lee
3 and
Devaraj Bharathi
3,*
1
Sabanci University Nanotechnology Research and Application Center (SUNUM), Istanbul 34956, Turkey
2
School of Biotechnology, Dr. G R Damodaran College of Science, Coimbatore 641014, India
3
School of Chemical Engineering, Yeungnam University, 280 Daehak-Ro, Gyeongsan 38541, Republic of Korea
*
Authors to whom correspondence should be addressed.
Polymers 2026, 18(1), 76; https://doi.org/10.3390/polym18010076 (registering DOI)
Submission received: 4 November 2025 / Revised: 15 December 2025 / Accepted: 24 December 2025 / Published: 26 December 2025
(This article belongs to the Special Issue Biodegradable and Biobased Polymers for Sustainable Food Applications)

Abstract

This study explored an eco-friendly coating system combining seagrass-derived cellulose fiber (SCF) from Cymodocea rotundata with marine type I collagen (MC) for tomato preservation. The SCF/MC composite was prepared through enzymatic and natural crosslinking processes and subsequently characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM), and thermogravimetric analysis (TGA). The results demonstrated that SCF/MC possessed a compact morphology, strong hydrogen bonding interactions, high crystallinity, and excellent thermal stability. When applied as a coating, SCF/MC composite significantly reduced weight loss in tomatoes, preserved firmness (>39 Units), regulated acidity, maintained moisture levels (~90%), and delayed increase in pH compared to the uncoated control. Additionally, the SCF/MC coating sustained ascorbic acid and moderated lycopene accumulation, indicating delayed ripening. At 0.5% of SCF/MC composite, spoilage was limited to 22% versus ~80% in control samples, demonstrating a substantial reduction in decay. Antifungal assay showed strong inhibition of Aspergillus flavus, with the highest suppression of mycelial growth observed at 0.5% of SCF/MC. Overall, the SCF/MC coating effectively enhanced fungal safety and maintained the physicochemical quality of tomatoes, thereby extending shelf life while valorizing seagrass biomass as a sustainable postharvest resource.
Keywords: seagrass cellulose; collagen; tomato shelf life; antifungal activity; sustainable packaging seagrass cellulose; collagen; tomato shelf life; antifungal activity; sustainable packaging
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MDPI and ACS Style

Palanisamy, S.; Saravanan, K.; Jabbar, J.; Jacob Michael, R.; Saravana Kumar, B.K.; Lee, J.; Bharathi, D. Seagrass-Derived Cellulose/Collagen Composite Coating for Enhanced Tomato Shelf Life and Postharvest Quality. Polymers 2026, 18, 76. https://doi.org/10.3390/polym18010076

AMA Style

Palanisamy S, Saravanan K, Jabbar J, Jacob Michael R, Saravana Kumar BK, Lee J, Bharathi D. Seagrass-Derived Cellulose/Collagen Composite Coating for Enhanced Tomato Shelf Life and Postharvest Quality. Polymers. 2026; 18(1):76. https://doi.org/10.3390/polym18010076

Chicago/Turabian Style

Palanisamy, Senthilkumar, Kokila Saravanan, Jishna Jabbar, Rahul Jacob Michael, Barani Kumar Saravana Kumar, Jintae Lee, and Devaraj Bharathi. 2026. "Seagrass-Derived Cellulose/Collagen Composite Coating for Enhanced Tomato Shelf Life and Postharvest Quality" Polymers 18, no. 1: 76. https://doi.org/10.3390/polym18010076

APA Style

Palanisamy, S., Saravanan, K., Jabbar, J., Jacob Michael, R., Saravana Kumar, B. K., Lee, J., & Bharathi, D. (2026). Seagrass-Derived Cellulose/Collagen Composite Coating for Enhanced Tomato Shelf Life and Postharvest Quality. Polymers, 18(1), 76. https://doi.org/10.3390/polym18010076

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