{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["13"],"submitter":["Rajapaksha S"],"pubmed_abstract":["Spent black tea (SBT) is a residue from tea beverage production and considered as a potential source of active polyphenols. This study aimed to develop a pilot-scale process on semi-continuous subcritical solvent extraction (SSE) of polyphenols from SBT by exploiting the lab-scale knowledge. Treatment of SBT with ethanol-water (50% w/w) as solvent at 125 °C and 0.3 MPa achieved a significantly higher yield of polyphenols (80.82 g gallic acid equivalents/kg black tea) with antioxidant activity (64.20 g gallic acid equivalents/kg black tea), compared to hot water extraction (HWE). SSE increased the soluble matter content in extracts than HWE. Based on the results of LC-MS, theaflavin-3,3'-digallate was the most abundant polyphenol from a total of 12 compounds to be extracted by SBT with 50% "],"journal":["Food chemistry: X"],"pagination":["100200"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC9039883"],"repository":["biostudies-literature"],"pubmed_title":["Pilot-scale extraction of polyphenols from spent black tea by semi-continuous subcritical solvent extraction."],"pmcid":["PMC9039883"],"pubmed_authors":["Shimizu N","Rajapaksha S"],"additional_accession":[]},"is_claimable":false,"name":"Pilot-scale extraction of polyphenols from spent black tea by semi-continuous subcritical solvent extraction.","description":"Spent black tea (SBT) is a residue from tea beverage production and considered as a potential source of active polyphenols. This study aimed to develop a pilot-scale process on semi-continuous subcritical solvent extraction (SSE) of polyphenols from SBT by exploiting the lab-scale knowledge. Treatment of SBT with ethanol-water (50% w/w) as solvent at 125 °C and 0.3 MPa achieved a significantly higher yield of polyphenols (80.82 g gallic acid equivalents/kg black tea) with antioxidant activity (64.20 g gallic acid equivalents/kg black tea), compared to hot water extraction (HWE). SSE increased the soluble matter content in extracts than HWE. Based on the results of LC-MS, theaflavin-3,3'-digallate was the most abundant polyphenol from a total of 12 compounds to be extracted by SBT with 50% ","dates":{"release":"2022-01-01T00:00:00Z","publication":"2022 Mar","modification":"2025-04-19T08:39:39.765Z","creation":"2025-02-19T04:20:51.241Z"},"accession":"S-EPMC9039883","cross_references":{"pubmed":["35498997"],"doi":["10.1016/j.fochx.2021.100200"]}}