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  • Title: Selective extraction and determination of steroidal glycoalkaloids in potato tissues by electromembrane extraction combined with LC-MS/MS.
    Author: Wan L, Gao H, Gao H, Du R, Wang F, Wang Y, Chen M.
    Journal: Food Chem; 2022 Jan 15; 367():130724. PubMed ID: 34352691.
    Abstract:
    For the first time, electromembrane extraction (EME) combined LC-MS/MS was applied to extract and determine α-solanine and α-chaconine in different potato tissues using NPOE containing 20% (v/v) DEHP as supported liquid membrane (SLM). Under the optimal conditions, the proposed EME-LC-MS/MS method was evaluated using spiked fresh potato peel sample. The linear range for α-solanine and α-chaconine was 5-1000 ng mL-1 (R2 > 0.9991), with LOD and LOQ of 1.2-1.5 ng mL-1 and 4.1-5.2 ng mL-1, respectively. Repeatability for α-solanine and α-chaconine at three concentration levels was satisfactory (<4.9%), and recoveries ranged from 73% to 106%. Finally, the EME-LC-MS/MS method has been successfully employed to determine α-solanine and α-chaconine in sprouted potato peel and tuber samples, indicating that EME exhibited high selectivity and efficient sample clean-up capability. Consequently, EME showed great potential for extraction and purification of toxic and bioactive basic compounds from complex plant tissues.
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