title: Recovery of steroidal alkaloids from potato peels using pressurized liquid extraction.
abstract: A higher yield of glycoalkaloids was recovered from potato peels using pressurized liquid extraction (1.92 mg/g dried potato peels) compared to conventional solid-liquid extraction (0.981 mg/g dried potato peels). Response surface methodology deduced the optimal temperature and extracting solvent (methanol) for the pressurized liquid extraction (PLE) of glycoalkaloids as 80 °C in 89% methanol. Using these two optimum PLE conditions, levels of individual steroidal alkaloids obtained were of 597, 873, 374 and 75 µg/g dried potato peel for α-solanine, α-chaconine, solanidine and demissidine respectively. Corresponding values for solid liquid extraction were 59%, 46%, 40% and 52% lower for α-solanine, α-chaconine, solanidine and demissidine respectively.
authors.affiliation: Department of Food Biosciences, Teagasc Food Research Centre, Ashtown, Dublin D15, Ireland. mohammad.hossain@teagasc.ie.
authors.forename: Mohammad B
authors.initials: MB
authors.lastname: Hossain
authors.affiliation: Department of Food Biosciences, Teagasc Food Research Centre, Ashtown, Dublin D15, Ireland. ashishrawson@gmail.com.|Indian Institute of Crop Processing Technology, Thanjavur 613005, TN, India. ashishrawson@gmail.com.
authors.forename: Ashish
authors.initials: A
authors.lastname: Rawson
authors.affiliation: Department of Food Biosciences, Teagasc Food Research Centre, Ashtown, Dublin D15, Ireland. ingrid.aguilo@irta.cat.|IRTA, XaRTA-Postharvest, Edifici Fruitcentre, Parc Científic i Tecnològic Agroalimentari de Lleida, Lleida 25003, Catalonia, Spain. ingrid.aguilo@irta.cat.
authors.forename: Ingrid
authors.initials: I
authors.lastname: Aguiló-Aguayo
authors.affiliation: School of Agriculture and Food Science, University College Dublin, Dublin D4, Ireland. nigel.brunton@ucd.ie.
authors.forename: Nigel P
authors.initials: NP
authors.lastname: Brunton
authors.affiliation: Department of Food Biosciences, Teagasc Food Research Centre, Ashtown, Dublin D15, Ireland. dilip.rai@teagasc.ie.
authors.forename: Dilip K
authors.initials: DK
authors.lastname: Rai
mesh_terms: D000470:Alkaloids / Q000378:metabolism*; D004144:Diosgenin / Q000378:metabolism; D000432:Methanol / Q000737:chemistry; D064209:Phytochemicals / Q000378:metabolism*; D012991:Solanaceous Alkaloids / Q000378:metabolism; D012992:Solanine / Q000031:analogs & derivatives / Q000378:metabolism; D011198:Solanum tuberosum / Q000378:metabolism*; D052616:Solid Phase Extraction / Q000379:methods*
chemical_list: D000470:Alkaloids; D064209:Phytochemicals; D012991:Solanaceous Alkaloids; C514919:alpha-solanine; D012992:Solanine; C011860:alpha-chaconine; D004144:Diosgenin; C015108:demissidine; C013255:solanidine; D000432:Methanol
keywords: glycoalkoids; potato peels; pressurized liquid extraction; response  surface methodology