Banca de QUALIFICAÇÃO: HANSHEYS MÉNARD

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : HANSHEYS MÉNARD
DATE: 30/12/2024
TIME: 10:00
LOCAL: Online via Google Meet
TITLE:

Development and effect of essential oil nanoparticles on the zootechnical parameters of Nile Tilapia (Oreochromis niloticus)

KEY WORDS:

Nanotechnology; nanoparticle; essential oils; zootechnical parameters; tilapia

PAGES: 53
BIG AREA: Ciências Biológicas
AREA: Farmacologia
SUMMARY:

Fish farming is considered a very important sector due to the high demand for its products and also for its contribution to job creation. In Brazil, in 2023, fish farming produced approximately 887,029 tons of fish and generated a very substantial income of US$ 24,755,687. Tilapia is one of the species that made this increase in production possible in Brazil. It represents 88% of Brazilian fish exports in 2023. With tilapia production constantly growing, the country ranks fourth among producers of this fish. One of the crucial factors for sustainable industrial fish farming is to provide fish with efficient and quality feed, with carefully developed formulations for each stage of production. For this purpose, essential oils are widely used and are considered one of the natural products that can be used as feed additives. However, to facilitate their handling and improve their absorption, using oils as nanoparticles can increase their effectiveness. For this purpose, the main objective of our work is to develop and analyze the effect of essential oil nanoparticles on the zootechnical parameters of tilapia (Oreochromis niloticus). Thus, two oils were chosen: Sicilian lemon essential oil and tangerine essential oil. The development of the nanoparticles was initially carried out through the formulation of the nanoemulsion to find the ideal amounts of water and surfactant. Then, the nanoparticle solutions were formulated. After the formulation, several preliminary stability tests were performed at different temperatures, and the organoleptic and physicochemical characterization of the particles. Following the results of the obtained formulations, some formulations were stored for 30 days. After storage, the results showed that there was no organoleptic alteration at 25, 35, and 5 °C, and the physicochemical parameters of NPCL and NPCR were significantly decreased at all temperatures. However, these variations were less significant at 25°C, with particle sizes ranging from 40.43 to 35.08 for NPCL and from 42.28 to 38.12 for NPCR, a decrease in PDI from 0.518 to 0.275; 0.477 to 0.268 respectively, a zeta potential of -26.9 to -10.77 and -22.57 to -16.43 and a pH of 5.2 to 5.1 and 5.1 to 4.9 respectively. We, therefore, conclude that this product can be stored for 30 days at an ambient temperature of 25 ± 2 °C and can be incorporated as a food additive in a commercial feed to test it in the species Oreochromis niloticus.

COMMITTEE MEMBERS:
Interno - PABYTON GONCALVES CADENA
Externo ao Programa - 2654735 - DIJACI ARAUJO FERREIRA - UFRPEExterno à Instituição - YURI MATEUS LIMA DE ALBUQUERQUE - UFRPE