主 讲 人：闵甜甜  农生学院食品科学与工程系 博士后

时    间：2024年11月27日 (星期三) 12:40-14:00

地    点：农生学院A楼0-103会议室

主办单位：农生学院学科与科技办、农生学院青年教师联谊会

报告题目：刺激响应控释型活性包装系统构建及其保鲜应用研究

报告摘要：

新鲜果蔬营养丰富、水分活度大，由于采后旺盛的生理代谢、机械损伤及微生物侵染，极易发生品质恶化和腐烂。天然植物精油及其活性成分具有广谱抗菌、抗氧化、抗炎等生物活性，是最具应用前景的生物保鲜剂。然而,游离的精油分子挥发性极强，难以匹配病原菌的生长速率和食品品质劣变，且受光和热易分解，气味刺激，严重制约了其在果蔬保鲜中的应用。开发精油包埋和控释技术，提高精油的稳定性和生物利用度，是突破精油应用瓶颈的关键途径。报告人主要针对果蔬贮藏环境中湿度、pH、酶等条件的变化，开发刺激响应控释型活性包装系统，使精油分子在特定刺激因素下从载体中可控或按需释放，实现长效保鲜作用。

报告人简介：

闵甜甜，博士毕业于北京科技大学化学专业，2022年8月在bat365在线平台官网食品系从事博士后研究。主要从事材料学、化学、微生物、食品等交叉学科研究，研究方向为食品活性包装与食品保鲜、刺激响应控释活性包装系统开发与应用，主持国家自然科学青年基金项目1项，参与国家自然科学基金面上项目、国家重点研发计划项目、四川省重点研发项目等课题7项，共发表SCI论文25篇，以第一/共一作者在Chemical Engineering Journal、Carbohydrate Polymers、Food Hydrocolloids、Food Chemistry等期刊发表SCI论文10篇，其中一区论文9篇，高被引论文4篇，申请国家发明专利4项，已授权1项。 

【所在学科研究组研究方向】：

（1）可降解食品活性包装材料开发与生鲜食品保鲜研究；

（2）植物基食品增值加工与副产物资源利用及食品安全评价。

【代表性著作】

1. Tiantian Min, Jin Yue*, Chuanxiang Cheng, Xiaoyun Ma, Shihan Weng, Yuwan Luo, Yujie Lei, & Yangyang Long. ZIF-8/TOCNF carrier coated with pectin “gatekeeper” for pH/enzyme dual-responsive releasing of carvacrol and its preservation effect on fruits. Chemical Engineering Journal, 2024, 496, 153686.

2. Tiantian Min, Yujie Lei, Chuanxiang Cheng, Yuwan Luo, Yushan Zhang, & Jin Yue*. Highly efficient anchoring of γ-cyclodextrin-MOFs on chitosan/cellulose film by in situ growth to enhance encapsulation and controlled release of carvacrol. Food Hydrocolloids, 2024, 150, 109633.

3. Tiantian Min, Xiaoli Sun, Liping Zhou, Haiyu Du, Zhu Zhu, & Yongqiang Wen*. Electrospun pullulan/PVA nanofibers integrated with thymol-loaded porphyrin metal−organic framework for antibacterial food packaging. Carbohydrate Polymers, 2021, 270, 118391.

4. Tiantian Min, Liping Zhou, Xiaoli Sun, Haiyu Du, Zhu Zhu*, & Yongqiang Wen*. Electrospun functional polymeric nanofibers for active food packaging: A review. Food Chemistry, 2022, 391, 133239.

5. Tiantian Min, Liping Zhou, Haiyu Du, Xiaochun Bian, Xiaoli Sun, Zhu Zhu*, & Yongqiang Wen*. Enzyme-responsive membranes based on pectin-coated PLA porous nanofibers for active food packaging. Food Research International, 2022, 157, 111256.

6. Tiantian Min, Zhu Zhu, Xiaoli Sun, Zhipeng Yuan, Junwei Zha, Yongqiang Wen*. Highly efficient antifogging and antibacterial food packaging film fabricated by novel quaternary ammonium chitosan composite. Food Chemistry, 2020, 308, 125682.

ACADEMIC SALON (59)

SPEAKER: Tiantian Min

                  Post doctor, Ph.D.  Department of Food Science & Engineering, SAB

TIME ：12:40-14:00 November 27, 2024 (Wed)

VENUE：Room 0-103, Building A, SAB

ORGANIZER：Office of Discipline and Science & Technology, SAB

                        Young Teachers Association, SAB

TITLE： Construction of stimuli-responsive controlled-release active packaging systems and their preservation applications

ABSTRACT：

Fresh fruits and vegetables are rich in nutrition and have high water activity. Due to vigorous postharvest physiological metabolism, mechanical damage and microbial infection during postharvest storage, fresh fruits and vegetables are prone to quality deterioration and decay. Natural plant essential oils and their active ingredients have broad-spectrum antibacterial, antioxidant, anti-inflammatory and other biological activities, which have been become the most promising biological preservatives. However, free essential oil molecules are highly volatile, which is difficult to match the growth velocity of pathogenic bacteria and food quality deterioration. In addition, they are easy to decompose by light and heat, and possess odor stimulation, which seriously restricts their applications in fruit and vegetable preservation. Developing embedding and controlled release technologies to improve the stability and bioavailability of essential oils is a vital pathway to break through the application bottleneck of essential oil. The author mainly aiming at developing stimuli-responsive controlled-release active packaging systems according to the environmental changes such as humidity, pH and enzymes during fruit and vegetable storage, so that essential oil molecules could be controlled and on demand release from the carriers under specific stimulus, so as to achieve long-term preservation.