Banca de DEFESA: MAELY PETRY

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : MAELY PETRY
DATE: 11/12/2020
TIME: 09:00
LOCAL: Web Conferência via xxx - xxxx
TITLE:

Physico-chemical, sensory and microbiological profile of Blue Shark (Prionace glauca) eviscerated on board.

KEY WORDS:

Volatile bases; Handling on board; Mercury; Fish quality.

PAGES: 45
BIG AREA: Ciências Agrárias
AREA: Medicina Veterinária
SUMMARY:

The quality of the fish is directly related to the handling of the fish in the capture vessels and the time they remain stored until they are processed in the industry. The project aimed to determine the quality profile of the Prionace glauca eviscerated on board. Three treatments were applied with 16 repetitions: captured and stored for up to 5 days; captured and stored from 6 to 10 days; and captured and stored for more than 11 days. All samples collected were from the same vessel and cruise. An average of 900 g of muscle per individual was collected, and these were fractionated, stored in plastic bags, and frozen for later delivery to the laboratory. These samples were subjected to physical-chemical, microbiological and sensory analyzes, the results being compared with what is recommended by the laws that support the quality of the fish. It was observed that the pH in all groups was above allowed by the legislation. The level of mercury in all samples was significantly below the maximum allowed limit. Only one sample was positive for Salmonella spp., indicative of contamination at the time of evisceration. As for the levels of total volatile bases, the results obtained showed that this index is not a trustworthy criterion for indicating degrees of freshness. Sensory parameters were different in all groups evaluated. Based on the results we concluded that the quality of the meat of P. glauca is influenced by the storage time, by the good handling practices on board, and that the concentration of mercury in this species that inhabits brazilian waters is minimal, when compared to other catch regions in the world.

BANKING MEMBERS:
Presidente - 2356802 - ROBILSON ANTONIO WEBER
Interno - 1830781 - ADOLFO JATOBA MEDEIROS BEZERRA
Externo à Instituição - GILBERTO CAETANO MANZONI