2026-04-14T17:51:43Zhttps://uvadoc.uva.es/oai/request

oai:uvadoc.uva.es:10324/708142025-05-26T07:17:07Zcom_10324_39910com_10324_894col_10324_39911

Recovering rhamnogalacturonan-I pectin from sugar beet pulp using a sequential ultrasound and microwave-assisted extraction: Study on extraction optimization and membrane purification (dataset) Amo Mateos, Esther Del Cáceres, Berta Coca Sanz, Mónica García Cubero, María Teresa Lucas Yagüe, Susana Universidad de Valladolid, Instituto de Procesos Sostenibles This research focuses on the integrated recovery of rhamnogalacturonan-I (RG-I) pectin from sugar beet pulp (SBP). First, the extraction of RG-I pectin through sequential ultrasound-assisted extraction (UAE) and microwave-assisted extraction (MAE) was assessed. Optimization using a response surface methodology identified the optimal conditions as initial pH 4, 10 minutes of UAE, and 157 °C for MAE, achieving a 66.0 % recovery of pectooligosaccharides (POS). Additionally, purification through continuous diafiltration and concentration via ultrafiltration of the POS using membranes with different molecular weight cut-offs (MWCO) was explored. In contrast to previous research using discontinuous diafiltration, the use of continuous diafiltration allowed a decrease in the extract viscosity and obtained higher yields using a higher MWCO membrane. The refined RG-I pectin solids exhibited a high global yield (39 – 40 g pectin/100 g SBP), and high-methoxyl characteristics, as well as purity levels (70 – 80 %) similar to commercial prebiotics. 2024-10-14T18:28:08Z 2024-10-14T18:28:08Z 2023-09-14 2024 dataset Bioresource Technology, 2024, 394, 130263. https://uvadoc.uva.es/handle/10324/70814 10.71569/ew90-e566 eng Estrategias para la valorización efectiva de residuos hortofrutícolas: producción de compuestos bioactivos y biocombustibles avanzados. VALORFRUIT (2021-2024) info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-nd/4.0/ Attribution-NonCommercial-NoDerivatives 4.0 Internacional