Beeswax-modified halloysite nanotube composite aerogels as intelligent packaging materials for colorimetric monitoring of shrimp freshness in high-humidity environments.

Food Chem

State Key Laboratory Basis of Xinjiang Indigenous Medicinal Plants Resource Utilization, Key Laboratory of Plants Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 40-1 Beijing Road, Urumqi 830011, Xinjiang, PR China. Electronic

Published: September 2025


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Article Abstract

This study describes a hydrophobic, structurally reinforced composite aerogel for intelligent packaging, prepared by incorporating beeswax-modified halloysite nanotubes and black rice anthocyanin as a pH indicator. The resulting aerogel exhibited a water contact angle of 121.35° ± 1.60°, a water absorption of 52.11 %, and a hardness of 15,605.2 N. Additionally, the composite maintained a low density of 44.27 kg/m and high porosity (94.70 %). This composite aerogel responds rapidly to ammonia gas and exhibits a significant change in color within 60 s, and shrimp freshness was successfully monitored in real time via colorimetry after storage at 25 °C and 4 °C. This study provides theoretical guidance for the selection and structural design of high-performance intelligent packaging materials and offers additional solutions for monitoring the freshness of protein-rich foods.

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http://dx.doi.org/10.1016/j.foodchem.2025.146160DOI Listing

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