Banca de DEFESA: DAMARIS ALVES DOS SANTOS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : DAMARIS ALVES DOS SANTOS
DATE: 29/09/2023
TIME: 09:00
LOCAL: Remoto - https://meet.google.com/zgw-fzsq-smq
TITLE:

Use of Nile tilapia solid waste for product development: sustainability in action.

KEY WORDS:

Keywords: Cultured fish, Solid waste, Processing, MSM technology.

PAGES: 116
BIG AREA: Ciências Agrárias
AREA: Ciência e Tecnologia de Alimentos
SUBÁREA: Tecnologia de Alimentos
SPECIALTY: Aproveitamento de Subprodutos
SUMMARY:

Fish is a food that stands out for its nutritional value being one of the most consumed proteins by man. With this, the production and consumption of this food have been growing significantly. However, problems arise related to the generation of solid waste in the industry that operates with the processing of frozen fish and canned fish, as in the processing units of farmed fish causing serious environmental impacts. The waste material generated in the processing can be transformed into value-added products. Thus, the aim of the present study was to develop mechanically separated meat products for human consumption and fish silage for animal feed, aiming at adding value and optimizing the use of solid waste generated in processing of Nile tilapia (Oreochromis niloticus, LINNAEUS, 1758). The tilapia CMS was obtained through the passage of the carcass and shavings in the pulpering. And the product was analyzed for the centesimal composition of 18.13% proteins, 77.88% moisture, 0.84% ashes, 6.58% lipids and 0.22% carbohydrate. And the physico-chemical and microbiological characteristics were in accordance with what was established by the current legislation. In order to achieve an optimal formulation for the fish silage product, the Mixture Design was used in 10 trials, whose components were solid fish residue, whey and corn meal, used in different concentrations. The experimental results of the response variables (pH, acidity, humidity and peroxide index), during 42 days of analysis, were evaluated by the Response Surface Methodology. From the best results pointed out by the mathematical model, the formulation was developed: 25% corn bran, 25% solid residue and 50% whey. The formulation was subjected to physical-chemical analysis for 21 days and showed average moisture values of 68.48%, titratable acidity of 50.83%, peroxide value of 6.99% and pH of 3.9. The centesimal composition of in natura residue, cooked residue and whey was evaluated and presented satisfactory results. The silage centesimal composition showed the following moisture values of 68.49%, 6.59% crude protein, 3.16% ash, 17.03% carbohydrate, 8.46% crude fibe, 5.42% lipid and 193.98% caloric value. Microbiological analyzes of Escherichia Coli and fungi and yeasts were performed, showing results of <3.0 MPN/g and <1.0x102 CFU/g, respectively. It is observed that MSM and Nile tilapia silage are alternatives to add value to waste from the industrialization of this species, generating food and work and an extra income for the enterprise, contributing to the sustainability of the activity by reducing disposal inappropriate in the environment.

 

 

COMMITTEE MEMBERS:
Presidente - 3333721 - GESILENE MENDONCA DE OLIVEIRA
Externo ao Programa - 3067308 - MATHEUS PEREIRA DOS SANTOS - UFRRJExterna à Instituição - SILVIA CONCEIÇÃO REIS PEREIRA MELLO - FIPERJ