Chemical constituents from Rhodiola wallichiana var. cholaensis (I) Conversion mechanism of 5-hydroxymethylfurfural in process of bran-fried Atractylodes lancea Chemical Constituents from the Seeds of Prunus domestica L. Study on liposoluble compounds in rhizome of Dioscoreae hypoglaucae Studies on separation,appraisal and the biological activity of 5HMF in Cornus officinalis Chemical constituents from berries of Physalis pubescens