Banca de QUALIFICAÇÃO: JÉSSICA CAROLINE ARAUJO SILVA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : JÉSSICA CAROLINE ARAUJO SILVA
DATE: 02/07/2024
TIME: 09:00
LOCAL: on line
TITLE:

MICROBIOLOGICAL PREDICTION IN BEVERAGES AND FROZEN FRUIT PUPS SUBMITTED TO ABUSIVE STORAGE CONDITIONS

KEY WORDS:

Predictive microbiology; Food safety; Tropical fruits; Freezing technique; Pathogenic and spoilage microorganisms

PAGES: 32
BIG AREA: Ciências Agrárias
AREA: Ciência e Tecnologia de Alimentos
SUBÁREA: Tecnologia de Alimentos
SPECIALTY: Tecnologia de Produtos de Origem Vegetal
SUMMARY:

Fruits are of great importance in human nutrition due to their constituents. They contain
water, sugars, fiber, mineral salts and antioxidant components, such as phenolic
compounds and vitamins. Fruit pulps and beverages can be exposed to adverse conditions,
which affect their safety and quality. This happens due to the high perishability of vegetal
products against the action of heat, enzymes, oxygen, light, and also microorganisms.
Pathogenic microorganisms, as Escherichia coli, Salmonella spp. and Listeria
monocytogenes cause foodborne illnesses, can be transmitted by beverages and fruit
pulps, degrading the quality and safety of the product. In the present study, fruit beverages
and pulps preserved by freezing will be evaluated for microbial prediction of such food
pathogens, using as models an acid pulp, acerola (Malpighia emarginata), and a less acid
pulp, açaí (Euterpe oleracea), in addition coconut water (Cocos nucifera L.) will be also
evaluated as it is, considered a low acid fruit beverage. Predictive analyzes will also be
applied to verify the of spoilage microorganisms profiles (mesophilic aerobic bacteria,
molds and yeasts). The beverage and fruit pulps will be analyzed under freezing (-20 °C),
refrigerated (5 °C) and abusive storage temperatures (10, 15 e 30 °C), in order to study
the effect of abusive storage conditions in microbial behavior.

COMMITTEE MEMBERS:
Presidente - ***.646.967-** - LOURDES MARIA CORRÊA CABRAL - EMBRAPA
Interno - ***.072.978-** - AMAURI ROSENTHAL - EMBRAPA
Externa ao Programa - ***.106.628-** - RENATA TORREZAN - EMBRAPA