Banca de QUALIFICAÇÃO: THAÍS DE SOUZA SANTOS

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : THAÍS DE SOUZA SANTOS
DATA : 09/04/2021
HORA: 17:00
LOCAL: Faculdade de Farmácia
TÍTULO:

Alternative Production of Xanthan Gum in Waste Water from the Oil Industry and Cassava Waste 

PALAVRAS-CHAVES:

Produced water, bipolymer, cassava residue, Xanthomonas campestris

PÁGINAS: 30
GRANDE ÁREA: Ciências Agrárias
ÁREA: Ciência e Tecnologia de Alimentos
SUBÁREA: Ciência de Alimentos
ESPECIALIDADE: Química, Física, Fisico-Química e Bioquímica dos Alim. e das Mat-Primas Alimentares
RESUMO:

Due to its excellent rheological properties, xanthan gum has wide application in several sectors of the food, pharmaceutical and petrochemical industry. Thus, the objective of this study was to evaluate the production and characterization of xanthan gum in residual water from the petrochemical industry supplemented with cassava residue as an alternative substrate. For the production, the strain Xanthomonas campestris 1182 was used in two fermentation times 72-96 hours. The water produced was evaluated for the parameters of physical-chemical composition and metals, as well as cassava residue evaluated physically-chemically. The apparent viscosity analyzes; emulsifying index; infrared spectroscopy (FTIR); molecular mass (HPLC) and thermal stability (TGA / dTGA), were carried out in order to characterize the gums produced. Maximum production was obtained in 72 hours of fermentation (6.80 g L-1). All samples showed pseudoplastic behavior and an emulsification index after 24 h equal to or greater than 50%. The samples showed two thermal winds characteristic of xanthan gum and demonstrated good stability when compared to commercial gum. Thus, Xanthomonas is capable of producing xanthan gum amidst the produced water and cassava residue efficiently.

MEMBROS DA BANCA:
Presidente - 4725209 - CAROLINA OLIVEIRA DE SOUZA
Externo(a) à Instituição - DENILSON DE JESUS ASSIS - UNIFACS
Externo(a) à Instituição - GLEICE VALERIA PACHECO GOMES - IFBA