Work

Colorimetric ammonia-sensitive potato starch-based smart films containing cellulose nanocrystal and Fe-ICA complex for shrimp freshness monitoring

Year: 2025

Type: article

Abstract: A new dual-functional Fe-ICA complex nanocrystal featuring intrinsic antioxidant and colorimetric ammonia-sensitive functions was designed and then combined with cellulose nanocrystal (CNC) to synergistically fortify potato starch (PS) matrix for developing advanced smart active packaging films. The influence of different Fe-ICA: CNC weight ratios on the structural, physical performances, and functional features of PS film was fully studied. Results revealed that the optimized film (PS/Fe-ICA 2 /CNC 4 ) demonstrated significantly improved mechanical strength (8.26 MPa), ductility (27.11 %), hydrophobicity (94.6°), and water/oxygen barrier performances, due to the synergistic effect of well-dispersed Fe-ICA/CNC. PS/Fe-ICA/CNC film was also endowed with potent UV-screening, antioxidant efficiency, colorimetric ammonia-sensitivity, long-term color stability, and biocompatibility. Besides, the PS/Fe-ICA/CNC film presented clear color alteration in response to shrimp spoilage, affirming its applicability for visually monitoring shrimp freshness. This work offered a new ammonia-sensitive smart packaging strategy by combining functional Fe-based complex and CNC through synergistic effects for freshness monitoring. • New dual-functional Fe-ICA and CNC loaded PS based smart active films were created. • The films gained high mechanical and UV/water/oxygen barrier due to Fe-ICA/CNC synergy. • The films showed outstanding antioxidant and ammonia-sensitive functions. • These smart films were successfully applied for real-time monitoring shrimp freshness. • This work offers a new strategy to develop ammonia-sensitive smart active packaging.

Source: Industrial Crops and Products

DOI: 10.1016/j.indcrop.2025.121940

Authors: Zhanpeng Tian, Shuangyi Li, Shumin Zou, Heping Li, Zhiming Zou, Xiuqing Zhang, Qun Tang

Institutions: Guilin University of Technology, Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, Guangxi Minzu University

Language: English

Topic: Nanocomposite Films for Food Packaging

Subfield: Biomaterials

Field: Materials Science

Domain: Physical Sciences

SDGs: Zero hunger, Responsible consumption and production

Open Access status: gold

Estimated APC paid: $3,720