食品科学 ›› 2009, Vol. 30 ›› Issue (9): 109-112.doi: 10.7506/spkx1002-6630-200909025

• 基础研究 • 上一篇    下一篇

超声波强化硫藏橄榄脱硫机理研究

黄苇1,宋贤良1,李爱军2,付光亮1,叶盛英1,罗树灿1   

  1. 1.华南农业大学食品学院 2.暨南大学食品科学与工程系
  • 收稿日期:2009-02-18 修回日期:2008-12-06 出版日期:2009-05-01 发布日期:2010-12-29
  • 通讯作者: 黄苇 E-mail:weihscau@163.com
  • 基金资助:

    广东省科技计划项目(2006B20401009;2005A40101003)

Mechanism Study on Ultrasonic-enhanced Desulfurization of Sulfited Chinese Olive

HUANG Wei1 SONG Xian-liang1 LI Ai-jun2 FU Guang-liang1 YE Sheng-ying 1 LUO Shu-can1   

  1. 1. College of Food Science, South China Agricultural University, Guangzhou 510642, China
    2. Department of Food Science and Engineering , Jinan University, Guangzhou 510632, China
  • Received:2009-02-18 Revised:2008-12-06 Online:2009-05-01 Published:2010-12-29
  • Contact: HUANG Wei E-mail:weihscau@163.com

摘要:

本实验以硫藏橄榄为对象,研究超声波强化脱硫效果的机理。扫描电镜照片显示,超声空化对橄榄表皮和果肉组织产生侵蚀和破碎作用,增大了传质速率,强化了脱硫效果。利用碘释放法证实超声处理会产生声化学效应,并且表现出功率越高,频率越低,声化学效应越强的趋势,超声辐射下产生的H2O2可能是其强化脱硫的重要原因。研究结果表明,超声波处理过程中产热能帮助提高脱硫效果。

关键词: 硫藏橄榄, 脱硫机理, 超声波

Abstract:

In the present study, the mechanism of ultrasonic enhancement in desulfurization of sulfited Chinese olive was discussed from the following aspects: (1) effects of ultrasonic on pericarp and pulp structures of Chinese olive, (2) heating effect of ultrasonic, and (3) sonochemical effect of ultrasonic. Results from scanning electron microscope (SEM) indicated that the pericarp and pulp structures of Chinese olive were ruptured and broken by ultrasonic. Hence, the dispersion of sulfur dioxide increased and the effect of desulfurization was enhanced. Ultrasonic would generate sonochemical effect on Chinese olive by iodine release assay and this effect elevated with the power of ulstrasonic rising and the frequency decreasing. Generation of hydrogen peroxide (H2O2) induced by ulstrasonic might be the main cause of enhancing desulfurization. In addition, our results also demonstrated that heating effect of ultrasonic is favorable to enhance desulfurization.

Key words: sulfited Chinese olive, desulfurization, ultrasonic, mechanism

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