RESUMOAmostras de uva (Vitis labrusca L.) cv Patrícia, produzidos na região de Primavera do Leste no Estado de Mato Grosso, foram analisadas pelos parâmetros químicos segundo a legislação: pH, sólidos solúveis (ºBrix), acidez titulável, vitamina C e atividade enzimática das enzimas polifenoloxidase (PPO); peroxidase (POD); pectinametilesterase (PME); e poligalacturonase (PG). O valor de sólidos solúveis (SS) das amostras analisadas foi de 17,69 ºBrix. O valor de pH encontrado foi de 3,69. A acidez titulável (AT) apresentou valor de 0,8 g de ácido tartárico/100 mL de suco. O valor de vitamina C foi de 17,54 mg/mL. A atividade enzimática da polifenoloxidase (PPO) foi de 22,15 U/g/min. As atividades enzimáticas para as enzimas peroxidase (POD) e poligalacturonase apresentaram valores de: 11,59 U/g/min e 3778,61 U/g/min, respectivamente. Não foram detectados valores para a atividade enzimática da pectinametilesterase (PME), nas amostras analisadas. Os parâmetros químicos analisados se encontram dentro dos padrões estabelecidos pela legislação. Pelos resultados apresentados a cultivar Patrícia apresenta um valor elevado de vitamina C e, quando em estado de maturação, apresenta valores elevados da atividade enzimática da poligalacturonase (PG). Termos para indexação:Vitis labrusca, ácido tartárico, enzima. ABSTRACTGrape samples (Vitis labrusca L.) Patrícia , produced in the area of Primavera do Leste in the State of Mato Grosso, were analyzed by the chemical parameters according to the legislation: pH, soluble solids (ºBrix), titrable acidity, vitamin C and enzymatic activity of the polyfenoloxidase (PPO); peroxydase (POD); pectinmetylesterase (PME); and polygalacturonase (PG). The value of soluble solids (SS) of the analyzed samples it was of 17.69 ºBrix. The value of found pH was of 3.69. The titrable acidity (AT) showed value of 0.8 g of acid tartaric/100 mL juice. The vitamin C value was 17.54 mg/mL. The enzymatic activity of the polyfenoloxidase (PPO) was 22.15 U/g/min. The enzymatic activities for the enzymes peroxidase (POD) and polygalacturonase presented values of: 11.59 U/g/min and 3778.61 U/g/min, respectively. Values were not detected for the enzymatic activity of the pectinmetylesterase (PME) in the analyzed samples. The values of chemical analysis found in this research were in agreement with legislation. For the results presented to Patrícia cultivar a high value of vitamin C was found and when in maturation stage it presents elevated values of the enzymatic activity of the polygalacturonase (PG).
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.