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Open AccessArticle

Recovery of Steroidal Alkaloids from Potato Peels Using Pressurized Liquid Extraction

1
Department of Food Biosciences, Teagasc Food Research Centre, Ashtown, Dublin D15, Ireland
2
Indian Institute of Crop Processing Technology, Thanjavur 613005, TN, India
3
IRTA, XaRTA-Postharvest, Edifici Fruitcentre, Parc Científic i Tecnològic Agroalimentari de Lleida, Lleida 25003, Catalonia, Spain
4
School of Agriculture and Food Science, University College Dublin, Dublin D4, Ireland
*
Authors to whom correspondence should be addressed.
Academic Editor: Derek J. McPhee
Molecules 2015, 20(5), 8560-8573; https://doi.org/10.3390/molecules20058560
Received: 20 January 2015 / Revised: 29 April 2015 / Accepted: 5 May 2015 / Published: 13 May 2015
(This article belongs to the Special Issue New Technologies for the Recovery of Natural Products)
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. View Full-Text
Keywords: glycoalkoids; potato peels; pressurized liquid extraction; response surface methodology glycoalkoids; potato peels; pressurized liquid extraction; response surface methodology
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MDPI and ACS Style

Hossain, M.B.; Rawson, A.; Aguiló-Aguayo, I.; Brunton, N.P.; Rai, D.K. Recovery of Steroidal Alkaloids from Potato Peels Using Pressurized Liquid Extraction. Molecules 2015, 20, 8560-8573.

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