Banca de DEFESA: MARIA CLARA GUIMARÃES

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : MARIA CLARA GUIMARÃES
DATE: 23/05/2024
TIME: 09:00
LOCAL: meet.google.com/nab-uqsz-nbq
TITLE:

DEVELOPMENT OF ACTIVE PACKAGING BASED ON MODIFIED STARCHES AND ENCAPSULATED THYME (T. vulgaris) ESSENTIAL OIL

KEY WORDS:

active packaging; biopolymers; cassava; food preservation. 

PAGES: 134
BIG AREA: Ciências Agrárias
AREA: Ciência e Tecnologia de Alimentos
SUBÁREA: Tecnologia de Alimentos
SPECIALTY: Embalagens de Produtos Alimentares
SUMMARY:

The research addresses the development of active packaging based on modified starch, aiming for more sustainable and effective solutions for the food industry through the encapsulation of thyme essential oil (TEO) in biodegradable materials. Thus, TEO was microencapsulated by complex coacervation. The formed microparticles had a size of 10 µm with an encapsulation efficiency of 90%, carrying 0.29g oil/g dry particle. Subsequently, these microparticles were incorporated into neutral and modified starch films for the characterization of the formed materials. Mechanical resistance, barrier and thermal properties, solubility, chemical composition, antimicrobial, and antioxidant activity were analyzed. The active films formed with the incorporation of TEO, both freely and in microparticles, showed improved water barrier properties as well as antimicrobial and antioxidant activity. However, starch modification combined with microparticle incorporation improved the material's resistance and thermal stability. Additionally, encapsulation provided additional protection to TEO, enhancing antimicrobial activity against E. coli, S. aureus, and Penicillium sp. Thus, this research highlighted the importance of innovation in the field of food packaging, aiming to prolong product shelf life and maintain its quality. The use of modified starches reinforced with microparticles emerges as a promising approach to meet these objectives, promoting a more sustainable and resilient economy.

COMMITTEE MEMBERS:
Presidente - ***.379.796-** - NATHÁLIA RAMOS DE MELO - UFF
Interna - 2311373 - MARIANA TEIXEIRA DA COSTA MACHADO
Externo à Instituição - LUÍS MARANGONI JÚNIOR - UNICAMP
Externa à Instituição - KLICIA ARAUJO SAMPAIO - UNICAMP
Externo à Instituição - MIGUEL ÂNGELO PARENTE RIBEIRO CERQUEIRA