Banca de QUALIFICAÇÃO: MAHYRA DA PAIXÃO E SILVA ALVES

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
STUDENT : MAHYRA DA PAIXÃO E SILVA ALVES
DATE: 08/04/2026
TIME: 14:00
LOCAL: Remota https://meet.google.com/yjn-iwkw-jhm
TITLE:

IMPROVING THE OVERALL POST-HARVEST QUALITY AND SAFETY OF FRESH APPLES SUBMITED TO UV-C LIGHT

KEY WORDS:

ultraviolet c, irradiation, microbial inactivation., postharvest conservation 

PAGES: 20
BIG AREA: Ciências Agrárias
AREA: Ciência e Tecnologia de Alimentos
SUBÁREA: Ciência de Alimentos
SPECIALTY: Avaliação e Controle de Qualidade de Alimentos
SUMMARY:

Widely cultivated and consumed worldwide, the apple (Malus domestica) stands out both for its gustatory qualities and potential nutritional value. However, it is subject to considerable post-harvest losses, mainly due to rot, which can account for up to 70% discards. Hence, there is a need for technologies that contribute to extending shelf life after harvest. We evaluated the post-harvest quality parameters and microbiological safety of fresh apples after they had been subjected to UV-C radiation. The fruit was exposed to UV-C for two pre-established periods (5 and 10 minutes) and then stored at 7 ˚C for 14 days. The physicochemical parameters analyzed were color, texture, ATT, TSS, phenolics and antioxidant capacity. In the microbiological evaluation (Salmonella, E. coli, mesophilic bacteria, molds and yeasts), the irradiated apples (10 minutes) showed microbial control during the days of storage, as well as higher values of firmness, ATT, phenolic compounds and preservation of red color. Exposure to UV-C did not cause any changes in the quality parameters of the irradiated fruit.

 

 

COMMITTEE MEMBERS:
Presidente - ***.726.462-** - OTNIEL FREITAS SILVA - EMBRAPA
Externa ao Programa - 1488978 - CRISTIANE HESS DE AZEVEDO MELEIRO - UFRRJExterna à Instituição - IZABELA ALVES GOMES