Crosslinking strategies and functionalization modification approaches for chitosan-based hydrogels in food preservation applications: A review - Zehao Huang; Shuang Tian; Yingying Yang; Jiacheng Zhang; Chunxiao Lan; Yuelu Li; Lijie Huang; Chongxing Huang; Hui Zhao; Qingshan Duan (Food Hydrocolloids, 2026)