Sung-Min Kim, Yun Hyeok Choi, Tae In Kim, Cho Rok Lee, Dong Wook Chae*, Jong-Young Jeon*, Jae-Woo Choi*, Bong-Seob Shin*, Min Hee Kim*,† , and Won Ho Park†
Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, Korea
*Department of Textile Engineering, Kyungpook National University, Sangju 37224, Korea
김성민 · 최윤혁 · 김태인 · 이초록 · 채동욱* · 전종영* · 최재우* · 신봉섭* · 김민희*,† · 박원호†
충남대학교 유기응용재료공학과, *경북대학교 섬유패션디자인학부(섬유공학전공)
Reproduction, stored in a retrieval system, or transmitted in any form of any part of this publication is permitted only by written permission from the Polymer Society of Korea.
The challenge for the food industry is to maintain or improve the quality of food products throughout the entire process of transportation, storage and consumption of foods. Hence, smart packaging technologies are actively studied in the food packaging industry. For instance, biomaterial-based food packaging technologies have been attempted in recent years owing to the abundance, biocompatibility, biodegradability, and non-toxicity of biopolymers. In this study, an active packaging film that can extend the shelf life of food was developed by blending tannic acid (TA), a natural polyphenolic compound with antioxidant and antibacterial activities, with poly(vinyl alcohol) (PVA), which is eco-friendly and has an excellent film-forming ability. The blend film was prepared via a simple solution-casting method, and its antioxidant and antibacterial properties, which can delay food spoilage, were evaluated. In addition, the anti-spoilage ability was evaluated in terms of browning and weight loss by packaging bananas, which are easily discolored during storage. Therefore, the PVA/TA blend film was found to extend the storage period of food.
식품산업의 당면 과제는 식품의 운송, 보관 및 소비의 전 과정에서 기존 식품의 품질을 유지하거나 향상시키는 것이다. 따라서, 식품 포장업계에서는 스마트 패키징 기술에 대한 연구가 활발하게 이루어지고 있다. 한 예로 최근 바이오고분자의 접근성, 생체적합성, 생분해성, 무독성 등의 특성을 활용하여 바이오소재 기반 식품 패키징 기술이 시도되고 있다. 본 연구에서는 환경친화적이며 필름형성능이 우수한 poly(vinyl alcohol) (PVA)에 항산화 및 항균 활성을 가지는 천연 폴리페놀 화합물인 tannic acid (TA)를 혼합하여, 식품의 유통기한을 연장할 수 있는 능동형 식품 포장 필름을 개발하였다. 블렌드 필름은 간단한 용액 성형방식으로 제조되었으며, 식품의 부패방지에 도움이 될 수 있는 항산화 및 항균 특성을 분석한 다음, 실제 변색이 쉽게 일어나는 바나나를 포장하여 식품 부패방지 특성을 갈변 현상과 중량 감소를 통해 평가하여 식품 보관능력이 향상되었음을 확인하였다.
Keywords: poly(vinyl alcohol), tannic acid, solution casting, active food packaging films.
2024; 48(5): 536-542
Published online Sep 25, 2024
Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, Korea
*Department of Textile Engineering, Kyungpook National University, Sangju 37224, Korea