包装与食品机械2025，Vol.43Issue(3)：22-34,13.DOI:10.3969/j.issn.1005-1295.2025.03.003
枇杷叶精油微胶囊的制备、表征及生物活性评价
Preparation,characterization and bioactivity evaluation of loquat leaf essential oil microcapsules
摘要
Abstract
To achieve controlled release of loquat leaf essential oil(LLEO),microencapsulated LLEO(M-LLEO)was prepared via complex coacervation.The feasibility of microencapsulation was evaluated by measuring encapsulation efficiency and physicochemical indices combined with characterization techniques.Bioactivity was comprehensively assessed through storage stability,release kinetics,free radical scavenging,and antibacterial tests,followed by preservation trials on blueberries.Results showed encapsulation efficiency and yield of M-LLEO reached 86.39%and 62.02%,M-LLEO exhibited spherical particle morphologies with diverse size distributions.There were no signs of cracking on the wall material.LLEO was successfully embedded by physical adsorption.Microcapsules demonstrated high thermal stability.M-LLEO was suitable for storage at low temperature,darkness,anaerobic,and low-humidity conditions.At elevated temperatures,release kinetics best fitted the first-order model(R2>0.99).On day 10,M-LLEO increased DPPH and ABTS+·scavenging rates by 40%and 35.93%versus free LLEO.Inhibition zone diameters against E.coli and Bacillus megaterium increased by 5.49 mm and 4.29 mm at 72 h versus 24 h.This indicated that the sustained-release effect of microcapsules maked the antioxidant and antibacterial effects of essential oils more lasting.Low-temperature combined with M-LLEO treatment reduced blueberry weight loss rate while delaying declines in hardness and titratable acid.After 10 days storage,soluble solids content of treated blueberries exceeded room-temperature controls by 41.9%.This study provides theoretical and practical foundations for LLEO applications.关键词
枇杷叶精油/微胶囊/表征/生物活性/蓝莓保鲜Key words
loquat leaf essential oil/microencapsulation/characterization/bioactivity/blueberry preservation分类
轻工纺织引用本文复制引用
方超逸,沈建东,邓仕彬,周凤超,马逸芬..枇杷叶精油微胶囊的制备、表征及生物活性评价[J].包装与食品机械,2025,43(3):22-34,13.基金项目
福建省自然科学基金项目(2023J011005,2022J011161) （2023J011005,2022J011161）
福建省教育厅中青年教师教育科研项目(JAT200506) （JAT200506）
