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Molecules 2015, 20(5), 8560-8573; doi:10.3390/molecules20058560

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
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)
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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. 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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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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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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