Recovery of Steroidal Alkaloids from Potato Peels Using Pressurized Liquid Extraction

Molecules

Mohammad B. Hossain²  Ashish Rawson²  Ingrid Aguiló-Aguayo²  Nigel P. Brunton¹  Dilip K. Rai² 

[1] School of Agriculture and Food Science, University College Dublin, Dublin D4, Ireland;Department of Food Biosciences, Teagasc Food Research Centre, Ashtown, Dublin D15, Ireland; E-Mails:

关键词: glycoalkoids;    potato peels;    pressurized liquid extraction;    response surface methodology;   

DOI  :  10.3390/molecules20058560

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.