Micheli Nolasco Araujo , Natalia do Carmo Diniz , Fabiane Hamerski , Giuliana Varela Garcia Lesak , Júlio César de Carvalho , Marcos L. Corazza
{"title":"使用压缩丙烷/丁烷，然后用 scCO2 加溶剂萃取法从废咖啡渣中回收有价值的化合物","authors":"Micheli Nolasco Araujo , Natalia do Carmo Diniz , Fabiane Hamerski , Giuliana Varela Garcia Lesak , Júlio César de Carvalho , Marcos L. Corazza","doi":"10.1016/j.supflu.2024.106317","DOIUrl":null,"url":null,"abstract":"<div><p>The sequential extraction of spent coffee grounds (SCG) oil by compressed propane and butane (CPE and CBE) followed by the extraction of phenolic compounds by supercritical CO<sub>2</sub> (scCO<sub>2</sub>) plus solvent was studied. Extraction with CPE and CBE at different conditions of pressure (2 – 10 MPa), temperature (40 – 80 ˚C), particle size (0.356 and 0.867 mm), static extraction time (0, 10, 30 and 60 min), dynamic extraction time (25 and 60 min) and solvent flow rate (1, 2 and 3 g/min) reached the maximum extraction yield around 11.5 wt%, and with similar overall extraction curves. The second step of extraction with scCO<sub>2</sub>+EtOH (2:1) increased the recovery of phenolics (expressed as GAE, gallic acid equivalent) from 0.9 mg GAE/g<sub>SCG</sub> (single-step extraction scCO<sub>2</sub>+EtOH (2:1) to 3.88 mg GAE/g<sub>SCG</sub> (second step of sequential extraction). The results showed the technical feasibility of the extraction of oil and phenolic extracts by the studied approach.</p></div>","PeriodicalId":17078,"journal":{"name":"Journal of Supercritical Fluids","volume":"211 ","pages":"Article 106317"},"PeriodicalIF":3.4000,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Recovery of valuable compounds from spent coffee grounds using compressed propane/butane followed by scCO2 plus solvent extraction\",\"authors\":\"Micheli Nolasco Araujo , Natalia do Carmo Diniz , Fabiane Hamerski , Giuliana Varela Garcia Lesak , Júlio César de Carvalho , Marcos L. Corazza\",\"doi\":\"10.1016/j.supflu.2024.106317\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The sequential extraction of spent coffee grounds (SCG) oil by compressed propane and butane (CPE and CBE) followed by the extraction of phenolic compounds by supercritical CO<sub>2</sub> (scCO<sub>2</sub>) plus solvent was studied. Extraction with CPE and CBE at different conditions of pressure (2 – 10 MPa), temperature (40 – 80 ˚C), particle size (0.356 and 0.867 mm), static extraction time (0, 10, 30 and 60 min), dynamic extraction time (25 and 60 min) and solvent flow rate (1, 2 and 3 g/min) reached the maximum extraction yield around 11.5 wt%, and with similar overall extraction curves. The second step of extraction with scCO<sub>2</sub>+EtOH (2:1) increased the recovery of phenolics (expressed as GAE, gallic acid equivalent) from 0.9 mg GAE/g<sub>SCG</sub> (single-step extraction scCO<sub>2</sub>+EtOH (2:1) to 3.88 mg GAE/g<sub>SCG</sub> (second step of sequential extraction). The results showed the technical feasibility of the extraction of oil and phenolic extracts by the studied approach.</p></div>\",\"PeriodicalId\":17078,\"journal\":{\"name\":\"Journal of Supercritical Fluids\",\"volume\":\"211 \",\"pages\":\"Article 106317\"},\"PeriodicalIF\":3.4000,\"publicationDate\":\"2024-05-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Supercritical Fluids\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0896844624001529\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Supercritical Fluids","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0896844624001529","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Recovery of valuable compounds from spent coffee grounds using compressed propane/butane followed by scCO2 plus solvent extraction
The sequential extraction of spent coffee grounds (SCG) oil by compressed propane and butane (CPE and CBE) followed by the extraction of phenolic compounds by supercritical CO2 (scCO2) plus solvent was studied. Extraction with CPE and CBE at different conditions of pressure (2 – 10 MPa), temperature (40 – 80 ˚C), particle size (0.356 and 0.867 mm), static extraction time (0, 10, 30 and 60 min), dynamic extraction time (25 and 60 min) and solvent flow rate (1, 2 and 3 g/min) reached the maximum extraction yield around 11.5 wt%, and with similar overall extraction curves. The second step of extraction with scCO2+EtOH (2:1) increased the recovery of phenolics (expressed as GAE, gallic acid equivalent) from 0.9 mg GAE/gSCG (single-step extraction scCO2+EtOH (2:1) to 3.88 mg GAE/gSCG (second step of sequential extraction). The results showed the technical feasibility of the extraction of oil and phenolic extracts by the studied approach.
期刊介绍：
The Journal of Supercritical Fluids is an international journal devoted to the fundamental and applied aspects of supercritical fluids and processes. Its aim is to provide a focused platform for academic and industrial researchers to report their findings and to have ready access to the advances in this rapidly growing field. Its coverage is multidisciplinary and includes both basic and applied topics.
Thermodynamics and phase equilibria, reaction kinetics and rate processes, thermal and transport properties, and all topics related to processing such as separations (extraction, fractionation, purification, chromatography) nucleation and impregnation are within the scope. Accounts of specific engineering applications such as those encountered in food, fuel, natural products, minerals, pharmaceuticals and polymer industries are included. Topics related to high pressure equipment design, analytical techniques, sensors, and process control methodologies are also within the scope of the journal.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
