Autor(es):
de Carvalho Tavares, Iasnaia Maria [UNESP] ; Umsza-Guez, Marcelo Andrés [UNESP] ; Martin, Natália [UNESP] ; Tobal, Thaise Mariá ; Boscolo, Maurício [UNESP] ; Gomes, Eleni [UNESP] ; Da-Silva, Roberto [UNESP] ; Lago-Vanzela, Ellen Silva [UNESP]
Data: 2020
Identificador Persistente: http://hdl.handle.net/11449/201372
Origem: Oasisbr
Assunto(s): Grape; Juice; Methanol; Pectinolytic enzyme; Phenolic content; Grape; Grape; Juice; Juice; Methanol; Methanol; Pectinolytic enzyme; Pectinolytic enzyme; Phenolic content; Phenolic content
Descrição
Made available in DSpace on 2020-12-12T02:30:49Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-04-01
The effect of pectinolytic enzyme preparation (PEP) produced by the fungus Thermomucor indicae-seudaticae-N31 (PEP-N31) on total phenolic content, concentrations of methanol and color of grape juice was studied. Positive results were found when PEP-N31 was used to extract phenolic compounds after the grapes had been blanched for 3 min and macerated for 1 h. The resulting juice had better yield, color characteristics and higher phenolic content (1637.21 mg.L-1, as gallic acid equivalent, or GAE) than the conventionally prepared juice (1422.59 mg GAE.L-1), and it was very similar to the juice obtained through the treatment with a commercial enzyme (1682.10 mg GAE.L-1). The concentration of methanol in the juice produced with the PEP-N31 was less than 200 mg.L-1. These results encourage the use of PEP produced by Thermomucor indicae-seudaticae-N31 by the grape-processing industry.
Department of Food Engineering and Technology São Paulo State University – UNESP
Department of Biotechnology Federal University of Bahia – UFBA
Unilago - Union of the Great Lakes Colleges
Faculty of Health Sciences Federal University of Grande Dourados – UFGD
Department of Chemistry and Environmental Sciences São Paulo State University - UNESP
Department of Biology São Paulo State University - UNESP
Department of Food Engineering and Technology São Paulo State University – UNESP
Department of Chemistry and Environmental Sciences São Paulo State University - UNESP
Department of Biology São Paulo State University - UNESP
