期刊名称：Croatian Journal of Food Science and Technology
印刷版ISSN：1847-3466
出版年度：2010
卷号：2.
期号：2.
页码：11-15
出版社：Prehrambeno-tehnološki fakultet Osijek
摘要：In this work influence of preparation on 5-hydroxymethylfurfural (HMF) and colour of bitter orange jams and sweet orange jams was investigated. Samples were prepared without and with treatment of oranges with ascorbic acid in order to investigate the influence on prevention of browning in jams. Samples were stored for 365 days at 4 °C and at room temperature and formation of HMF and colour change during storage were measured. After jam preparation bitter orange jams had higher HMF content than sweet orange jams (231 mg/kg and 58.3 mg/kg, respectively). Treatment of oranges with ascorbic acid increased formation of HMF during preparation of jams (261 mg/kg and 95 mg/kg for bitter and sweet orange jams). During storage the same tendency was observed. Also, difference in colour between sweet and bitter orange jams was observed. The highest colour change was observed in bitter orange jams (ΔE* = 5.66) with addition of ascorbic acid. In this work the importance of pH value of jams and storage temperature for HMF formation and colour was emphasised.
