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Apple pulps (AP) were obtained as a side product in fruit juice factories and contains valuable phenolic compounds. The dried AP was subjected to extraction with water, ethyl acetate (APEA) and n-butanol (APBU), respectively. 5-Hydroxymaltol (5-HM) was isolated and confirmed by NMR techniques. The HPLC-TOF/MS analysis revealed the presence of 16 components including major components of morine, gentisic,...
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