Extraction of polyphenols and antioxidants from pomegranate peel using ultrasound: influence of temperature, frequency and operation mode

Autor(es)

Da Fonseca Machado, Ana Paula ^[1] ; Sumere, Beatriz Rocchetti ^[2] ; Mekaru, Carolina ^[1] ; Martinez, Julian ^[1] ; Neves Bezerra, Rosangela Maria ^[2] ; Rostagno, Mauricio Ariel ^[2]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Food Engn, 80 Monteiro Lobato St, BR-13083862 Campinas, SP - Brazil

^[2] Univ Estadual Campinas, Sch Appl Sci, 1300 Pedro Zaccaria St, BR-13484350 Limeira, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY; v. 54, n. 9, p. 2792-2801, SEP 2019.
• Citações Web of Science: 0

Resumo

The objective of this research was to investigate the effects of temperature (40-70 degrees C), frequency (37 and 80 kHz) and ultrasonic operation mode (normal, pulse and sweep), and their interactions on the recovery of phenolic compounds and antioxidants present in pomegranate peel using ultrasound-assisted extraction. The content of individual phenolic compounds, total phenolic compounds (TPC), antioxidant capacity (AC) and total extract yield (X-0) were analysed. Significant effects were observed between some sources of variation in recovery of individual compounds at TPC and X-0, and no significant effect was observed for AC. The process and conditions studied shown to be interesting to extract antioxidants, since a high antioxidant capacity was verified in the extracts. Temperatures around 50-60 degrees C, using 37 kHz frequency, and normal or pulse modes were the conditions that provided better yields of phenolic compounds and X-0. Regarding AC, the best condition observed was at 70 degrees C, 80 kHz frequency and continuous mode. (AU)

• Processo FAPESP: 15/11932-7 - Integração de processos de extração a alta pressão com operações de separação para o aproveitamento de subprodutos do processamento de frutas
• Beneficiário: Julian Martínez
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/04304-4 - Desenvolvimento de sistemas integrados para a análise de compostos bioativos em produtos naturais utilizando tecnologia supercrítica
• Beneficiário: Maurício Ariel Rostagno
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores