Banca de QUALIFICAÇÃO: ANDREIA APARECIDA DOS ANJOS CHAGAS

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : ANDREIA APARECIDA DOS ANJOS CHAGAS
DATE: 09/05/2022
TIME: 09:00
LOCAL: Sala de Videoconferência (2º andar - Prédio Principal do CSL)
TITLE:

EFFECT OF MATURATION STAGE ON BIOACTIVE COMPOUNDS, ANTIOXIDANT ACTIVITY AND PHYSICOCHEMICAL CHARACTERISTICS OF GRAPE TYPE TOMATOES

KEY WORDS:

Lycopersicon esculentum, harvest, quality

PAGES: 62
BIG AREA: Ciências Agrárias
AREA: Ciência e Tecnologia de Alimentos
SUBÁREA: Ciência de Alimentos
SPECIALTY: Avaliação e Controle de Qualidade de Alimentos
SUMMARY:

The quality of the tomato is directly related to the degree of maturation of the fruit, since, throughout this process, several physiological and biochemical changes occur that lead to changes in color, flavor, texture and aroma. Therefore, the objective of this work was to evaluate the physicochemical characteristics, bioactive compounds and the antioxidant capacity of tomato fruits as a function of the harvest at five stages of maturation. Cherry tomatoes of the sweet heaven variety were used for the experiment, grown in a protected environment at the Ostrich site in the Cerrado, located in the rural area of Araçaí. The experiment was carried out in a completely randomized design (DIC), with five stages of maturation (treatments) and five replications. The contents of the bioactive compounds (total phenolic compounds, total carotenoids, lycopene, anthocyanins and flavonoids) and the physicochemical characteristics (instrumental color, pH, total soluble solids, total titratable acidity and SST/ATT ratio) were evaluated. The data were submitted to the Shapiro-Wilk and Bartlett normality test and to the homogeneity test, and for those that did not fit, the BoxCox transformation was performed, but if the assumptions persisted, the non-parametric Kruskall Wallis equivalent was used. of ANOVA, followed by Dunn's test. There was a significant effect on almost all variables analyzed, except for the chroma parameter (C). The results show a reduction in the total titratable acidity and luminosity content; and an increase in a* coordinate, pH, total soluble solids and SST/ATT ratio, with advancing maturation. The samples collected in the mature stage, showed the highest concentrations of bioactive compounds and antioxidant capacity. Although they presented superior characteristics in relation to the other stages, the harvest of tomatoes at this stage becomes compromised due to their perishability to handling. Therefore, joint assessment of quality attributes can improve the identification of maturation stages, in order to ensure the delivery of a product that satisfies consumer demands.

BANKING MEMBERS:
Interna - 1778682 - ANA PAULA COELHO MADEIRA SILVA
Externa ao Programa - 1005005 - CINTIA NANCI KOBORI
Presidente - 1756428 - LANAMAR DE ALMEIDA CARLOS