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  5. 開發二氧化鈦改質發泡細菌纖維素與其於活性包裝之應用
 
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開發二氧化鈦改質發泡細菌纖維素與其於活性包裝之應用

Other Title
Development of titanium dioxide altered foaming bacterial cellulose for active packaging application
Type
thesis
Date Issued
2026-07-13
Author(s)
陳詩甯
Advisor
林欣平
Subjects
系所名稱:食品安全學系碩士班
Publisher
食品安全學系碩士班
Description
學位別:碩士
語文別:中文
指導教授:林欣平
口試委員:林欣平; 鄭光成; 莊永坤; 蕭伊倫
授權範圍:網際網路,開放日期為2026-07-27
電子論文連結:https://handle.ncl.edu.tw/11296/64yd4j
Abstract
受到 COVID-19 疫情衝擊與冷鏈流通擴張的影響,消費者對冷藏與生鮮食品長期保存需求上升,因此追求更具效率與功能性之保鮮技術遂成為食品產業關注焦點。細菌性纖維素 (bacterial cellulose, BC) 具有良好的生物相容性及機械性質,具發展為活性食品包裝材料之潛力,然而其缺乏抗菌活性,限制了實際保鮮之應用。為了將其開發成為抗菌包材,本研究首先製備發泡型細菌性纖維 (foaming bacterial cellulose, FBC),並以原位修飾導入二氧化鈦 (titanium dioxide, TiO2) 以形成抗菌包材,後評估其材料特性、光催化能力、抗菌活性、生物相容性及於金目鱸魚片冷藏保鮮之應用潛力。結果顯示,TiO2 可成功導入 FBC 中,且於特定濃度添加組別可提升其熱穩定性,但過高濃度之組別則會導致 FBC 結構過於柔軟且易碎。於光催化活性上,0.5% TiO2/FBC 可於紫外光照射下有效降解甲基橙達 28.6%。於抗菌性上,其對大腸桿菌 (Escherichia coli) 及金黃色葡萄球菌(Staphylococcus aureus)具有顯著抗菌效果,其抑菌率分別為 58.54%及 98.33%。此外,各組複合薄膜萃取液之細胞存活率皆高於 80% ,顯示其具有良好的生物相容性。 應用於金目鱸魚片冷藏保鮮時, 0.5% TiO2/FBC 複合薄膜可延緩總生菌數 、總揮發性鹽基態氮及脂質氧化之增加, 第 3 天總生菌數降低約 1.17 log CFU/mL,第 9 天 TVBN 及 TBARS 分別較對照組降低約 79.58%及 27.13%。綜合上述之結果,0.5% TiO2/FBC 展現優異之光催化、抗菌及冷藏保鮮效果,具食品活性包裝材料之應用潛力。
URI
https://handle.ncl.edu.tw/11296/64yd4j
https://203.71.86.71/handle/123456789/74496

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