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Abstract Title:

Biochemical and biophysical characterization of water-soluble pectin from Opuntia ficus-indica and its potential cytotoxic activity.

Abstract Source:

Phytochemistry. 2018 Oct ;154:47-55. Epub 2018 Jun 30. PMID: 30006087

Abstract Author(s):

Khalef Lefsih, Daniela Giacomazza, Rosa Passantino, Maria Assunta Costa, Donatella Bulone, Maria Rosalia Mangione, Valeria Guarrasi, Francesco Mingoia, Pier Luigi San Biagio, Khodir Madani

Article Affiliation:

Khalef Lefsih

Abstract:

This work aims to fill the gap in the present knowledge about the structure of pectin from Opuntia ficus-indica. The water-soluble pectin (WSP) fraction, extracted with the Microwave Assisted Extraction (MAE), was further deproteinated (dWSP) and analyzed through several biophysical and biochemical techniques. HPSEC, light scattering and FTIR data showed that dWSP is low methylated high molecular weight pectin. The biochemical structure of dWSP, after methanolysis, silylation, carboxyl reduction showed that dWSP belongs to rhamnogalacturonan I class. Then, dWSP was heat-modified (HM) to obtain small-molecular weight deproteinated fraction (HM-dWSP). Both species, dWSP and HM-dWSP, were tested in LAN5 and NIH 3T3 model cells to study their biological effect. Results indicated that both dWSP and HM-dWSP exerted cytotoxic activity affecting selectively LAN5 cancer cells, without any effect on NIH 3T3 normal cells.

Study Type : In Vitro Study

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