Yield Optimization and Functionality of an Extract of Water-soluble Dietary Fiber and Solids from Opuntia ficus-indica Stems

Autor:	Kim Byung Yong, Baik Moo-Yeol, Byung Wook Yang
Rok vydání:	2019
Předmět:	Ethanol biology Vitamin C DPPH Extraction (chemistry) biology.organism_classification chemistry.chemical_compound Cereus chemistry Distilled water Yield (chemistry) Dietary fiber Food science Food Science
Zdroj:	Food Engineering Progress. 23:81-86
ISSN:	2288-1247 1226-4768
Popis:	The purpose of this study is to optimize the extraction conditions (time, pH, and temperature) for water-soluble dietary fiber (SDF) and solids from Opuntia ficus-indica (OFI) stems and to evaluate the functionality of the optimized extract. The maximum extraction yield was obtained when 100% distilled water was used, indicating that ethanol hampered the extraction. The extraction yields were lower at higher temperatures and lower pHs. The maximum extraction of SDF (27.92%) and solids (5.6 g) was achieved with a 7-h extraction at 50oC and pH 7.0, with desirability being 0.958. The stem extract obtained under the optimum extraction conditions had an antioxidant capacity of 118.10 mg vitamin C equivalents (VCE) using the 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay. In a medium containing 30% extract, the growth of E. coli was reduced by 34%, while that of B. cereus was reduced by 23%. These results suggest that OFI stems can be used as a functional resource.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::cfcb18daa12979b24767f8d522631ab7 https://doi.org/10.13050/foodengprog.2019.23.2.81 Zobrazit plný text záznamu