包装与食品机械2025，Vol.43Issue(4)：39-48,10.DOI:10.3969/j.issn.1005-1295.2025.04.005
CMC-Na/浒苔水提物复合膜的特性及保鲜效果研究
Study on properties and preservation effect of CMC-Na/water extract of enteromorpha prolifera composite film
摘要
Abstract
To enhance the performance of sodium carboxymethyl cellulose(CMC-Na)films,composite films were prepared using CMC-Na as the film-forming matrix,Water extract of enteromorpha prolifera and sorbitol as functional components.Single-factor experiments combined with response surface methodology optimized the composite ratio.Mechanical strength,barrier properties(water vapor and oxygen permeability),and microstructure(SEM,XRD)of the films were analyzed,followed by preservation tests on plum fruits.Results showed the optimal composition:CMC-Na 2.726 g/(100 mL),Water extract of enteromorpha prolifera 0.523 g/(100 mL),sorbitol 0.386 g/(100 mL).The film exhibited tensile strength of 31.09 MPa,water vapor permeability of 2.55×10⁻¹2 g/(m⋅s⋅Pa),and oxygen permeability of 5.19×10⁻⁷ g/(m⋅s).Preservation tests indicated that,with day 0 hardness as baseline(100%),the coated group maintained 57.1%hardness retention on day 4,significantly higher than the CK group(14.8%).On day 10,soluble solids content of the treated group(1.30%)exceeded CK group(0.933 33%)by 39.3%;titratable acid reduction was 26.1%(vs.37.8%in CK group).From day 0 to 10,malondialdehyde content in treated group was 24.8%～55.9%lower than CK group.This study provides theoretical support for high-value utilization of algal resources.关键词
浒苔/羧甲基纤维素钠/复合膜/李子/绿色保鲜Key words
enteromorpha prolifera/sodium carboxymethyl cellulose(CMC-Na)/composite film/plum/green preservation分类
轻工纺织引用本文复制引用
李静,邵朋,蒋茹萍,谭孙景,陆芽春..CMC-Na/浒苔水提物复合膜的特性及保鲜效果研究[J].包装与食品机械,2025,43(4):39-48,10.基金项目
国家自然科学基金项目(31860251) （31860251）
广西科技计划项目(桂科AD19245040) （桂科AD19245040）
广西果实贮藏与加工新技术重点实验室开放课题项目(GXKLFVSPT202202) （GXKLFVSPT202202）
