The structure andlevel of glucosylceramide in apple pomace

Abstract

A large amount of apple pomace is discharged as industrial waste. Apple pomace contains glucosylceramides, details of which remain unclear. In this study, we examined the structure and level of the major glucosylceramide in apple pomace and compared its structure with those of glucosylceramides from other plants. Glucosylceramide from apple pomace was principally composed of 2-hydroxypalmitic acid, 4-hydroxy-cis-8-sphingenine, and glucose. These major components were different from those in glucosylceramides from other marketed plants. Moreover, the structures of pomace glucosylceramides from 10 varieties of apple were similar. The glucosylceramide level in 'Akane' was the highest among the 10 varieties at 1.00 mg/g dry weight.