Preparation and characterization of chitosan derivatives modified with quaternary ammonium salt and quaternary phosphate salt and its effect on tropical fruit preservation. (1st September 2022)

• Record Type: Journal Article
• Authors: Pan, Qingyan; Zhou, Chuang; Yang, Ziming; He, Zuyu; Wang, Chao; Liu, Yunhao; Song, Shuhui; Gu, Hui; Hong, Keqian; Yu, Lijuan; Qu, Yunhui; Li, Puwang
• Is Part Of: Food chemistry. Volume 387(2022)
• Publication Date: 2022-09-01
• Subjects: HACC -- Quaternary phosphonium modification -- Food packaging -- Antibacterial -- Composite films; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2022.132878
• Languages: English
• ISSNs: 0308-8146

Abstract

Graphical abstract: Highlights: HACC modified with quaternary phosphonium salt was synthesized. A multifunctional film with good thermal and mechanical properties was designed. The composite coating against bacteria can prolong the shelf life of fruits. Abstract: In this paper, HACC modified with (5-Carboxypentyl) (triphenyl) phosphonium bromide (HA-CS-NP) was synthesized. Then, a multifunctional food packaging composite film with good thermal stability and antibacterial functions was fabricated by HA-CS-NP and poly (vinyl alcohol) (PVA). The tensile strength and elongation at break of HA-CS-NP/PVA composite film at the weight ratio of 3/7 were 20.32 ± 1.02 MPa and 65.73 ± 3.29%, respectively. And, the inhibition rates of HA-CS-NP (0.5%) on Mango C. lagenarium and Papaya C. gloeosporioides on day 6 were up to 80.92 ± 4.12%. Compared with CK group, the weight loss of experimental groups were 23.96 ± 2.46 g/206 ± 7.25 g (mangoes) and 59.45 ± 3.06 g/496 ± 6.37 g (papaya), reduced by 35.76 ± 1.15%. Moreover, the final hardness value of the fruits coated with composite films was 4.94 ± 0.23 kg/cm 3 and increased by 20.79 ± 1.04%, and the rot index was reduced by 71.43 ± 3.24%. The multifunctional HA-CS-NP/PVA coating has broad prospects in the application of food packaging.