Banca de DEFESA: CAMILA NUNES CARNEIRO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : CAMILA NUNES CARNEIRO
DATE: 27/02/2024
TIME: 09:00
LOCAL: Programa de Pós-Graduação em Ciência de Materiais
TITLE:

UTILIZATION OF SHRIMP WASTE IN BACTERIAL CELLULOSE PRODUCTION

KEY WORDS:

Bacterial Cellulose. Shrimp Farming. Natural Antioxidant. Active Packaging.

PAGES: 89
BIG AREA: Outra
AREA: Multidisciplinar
SUMMARY:

The significant growth of shrimp farming in tropical and developing countries has brought about challenges in waste and byproduct management. Shrimp waste is a valuable source of carbon and other biomolecules, with astaxanthin standing out due to its antioxidant and antimicrobial properties. Antioxidants play a crucial role in inhibiting oxidative chemical reactions and hold significant value for the food industry as essential substances to ensure food quality. On the other hand, antimicrobial properties work to inhibit or delay the growth of microorganisms, extending the shelf life of food products. When these additives are incorporated into packaging formulations and interact with the food, they function as active agents, providing the packaging with antioxidant and antimicrobial properties. For this reason, the objective of this work was to manufacture bacterial cellulose (BC) films using shrimp waste flour from the Litopenaeus vannamei species in situ as a substrate to develop biodegradable active packaging. To produce BC, the bacterium Gluconacetobacter hansenii was cultured in a pure saline medium with the addition of waste at concentrations of 5 g/L, 10 g/L, and 20 g/L, as well as through glucose at the same concentrations, compared to the standard HS medium. The study involved analyzing Water Retention Capacity (WRC), porosity, Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), antimicrobial activity, and antioxidant activity. The saline medium demonstrated better yield. The waste particle load exhibited a uniform distribution on the film, and the material showed low porosity. Additionally, higher thermal stability of the saline medium was observed. Antimicrobial and antioxidant activities were confirmed, along with characteristic carotenoid bands in FTIR. Based on the results obtained, it is concluded that the addition of shrimp waste is a natural antioxidant and has the potential for the development of active packaging.

COMMITTEE MEMBERS:
Externo à Instituição - ETELINO JOSÉ MONTEIRO VERA CRUZ FEIJÓ DE MELO - IFPE
Presidente - 2572606 - GLORIA MARIA VINHAS
Interna - 2330165 - MARIA GORETI CARVALHO PEREIRA