食品科学 ›› 2011, Vol. 32 ›› Issue (12): 24-28.doi: 10.7506/spkx1002-6630-201112006

• 工艺技术 • 上一篇    下一篇

赣南脐橙果汁脱苦工艺对糖、Vc及有机酸的影响

王科军,吴笑臣,钟金莲,罗序中*   

  1. 赣南师范学院化学与生命科学学院
  • 出版日期:2011-06-25 发布日期:2011-06-10
  • 基金资助:
    江西省科技支撑计划项目(2010BNB1400);江西省教育厅科学技术研究项目(GJJ10587); 赣州市果业基金项目(GZGY2008-1);赣南师范学院自然科学研究课题(09kyz10)

Effects of Different Debittering Technologies on the Contents of Sugar, Vitamin C and Organic Acids in Gannan Navel Juice

WANG Ke-jun,WU Xiao-chen,ZHONG Jin-lian,LUO Xu-zhong*   

  1. College of Chemistry and Life Science, Gannan Normal University, Ganzhou 341000, China
  • Online:2011-06-25 Published:2011-06-10

摘要: 研究硅酸镁、大孔径树脂、β-环糊精对赣南脐橙果汁的脱苦工艺条件,并用国标法探讨各种脱苦条件对橙汁中糖、VC、有机酸的变化影响。结果表明,用硅酸镁脱苦时,其较佳的工艺条件为:活化温度120℃,吸附剂用量1.0%,吸附时间1h,吸附温度20℃,此时脱苦率可达64%,而橙汁中的糖、VC、有机酸损失率分别达到11%、4%、61%;用大孔径树脂脱苦时,较好的树脂型号是HP-20,它的较佳工艺条件为:树脂用量1.0%、吸附时间14h、吸附温度20℃时,脱苦率达73%,此时橙汁中的糖、VC、有机酸损失率分别为5%、1%、7%左右;用β-环糊精脱苦时,得到较佳的工艺条件为β-环糊精用量0.6%、包埋温度20℃、包埋时间60min,此时脱苦率达52%,而橙汁中的糖、VC、有机酸损失很少。可为赣南脐橙果汁生产和产品质量监控提供操作参考指导。

关键词: 脐橙汁, 脱苦技术, 损失, 糖, Vc, 有机酸

Abstract: The debittering of Gannan navel juice with magnesium silicate, macroporous resin or β-cyclodextrin was studied with respect to the effects of major process parameters on the contents of sugar, vitamin C and organic acids. The optimum conditions for debittering Gannan navel juice with magnesium silicate were activation temperature 120 ℃, magnesium silicate addition 1.0%, and adsorption at 20 ℃ for 1 h, and under these conditions, the debittering rate and the loss rates of sugar, vitamin C and organic acids were 64%, 11%, 4% and 61%, respectively. Among 6 investigated types of macroporous resin, HP-20 was best for debittering Gannan navel juice, and its optimum adsorption conditions for debittering Gannan navel juice were 1.0% HP-20 addition , 14 h adsorption time and 20 ℃ adsorption temperature, resulting in a debittering rate of 73% and respective loss rates of sugar, vitamin C and organic acids of 5%, 1% and 7%. The optimum conditions for debittering Gannan navel juice with β-cyclodextrin were 0.6%, 20 ℃ and 1 h for β-cyclodextrin addition, temperature and embedding time, respectively, and the resulting debettering rate was 52% and sugar, vitamin C and organic acids were little lost.

Key words: navel juice, debittering technology, loss, sugar, vitamin C, organic acid

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