Journal of Integrative Agriculture ›› 2011, Vol. 10 ›› Issue (12): 1992-1997.DOI: 10.1016/S1671-2927(11)60201-0

• 论文 • 上一篇    

Thermal Degradation Kinetics of Anthocyanins and Visual Color of Blood Orange Juice

 CAO Shao-qian, LIU Liang , PAN Si-yi   

  1. 1. College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, P.R.China
    2. Department of Applied Biology, Zhejiang Pharmaceutical College, Ningbo 315100, P.R.China
    3. College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, P.R.China
  • 收稿日期:2010-06-17 出版日期:2011-12-01 发布日期:2011-12-19
  • 通讯作者: Correspondence PAN Si-yi, Tel: +86-27-87283778, Fax: +86-27-87288373, E-mail: pansiyi@mail.hzau.edu.cn
  • 作者简介:CAO Shao-qian, Tel: +86-574-88222773, E-mail: shaoqiancao@yahoo.com.cn
  • 基金资助:

    We thank Hubei Wangchunhua Co. Ltd., China, for providing plant materials. This work was funded by the Natural Science Foundation of Hubei Province, China(2006ABA168).

Thermal Degradation Kinetics of Anthocyanins and Visual Color of Blood Orange Juice

 CAO Shao-qian, LIU Liang , PAN Si-yi   

  1. 1. College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, P.R.China
    2. Department of Applied Biology, Zhejiang Pharmaceutical College, Ningbo 315100, P.R.China
    3. College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, P.R.China
  • Received:2010-06-17 Online:2011-12-01 Published:2011-12-19
  • Contact: Correspondence PAN Si-yi, Tel: +86-27-87283778, Fax: +86-27-87288373, E-mail: pansiyi@mail.hzau.edu.cn
  • About author:CAO Shao-qian, Tel: +86-574-88222773, E-mail: shaoqiancao@yahoo.com.cn;
  • Supported by:

    We thank Hubei Wangchunhua Co. Ltd., China, for providing plant materials. This work was funded by the Natural Science Foundation of Hubei Province, China(2006ABA168).

摘要: Thermal degradation kinetics of anthocyanins and visual color (Hunter a* value) of blood orange juice were studied at selected temperatures (70-90°C). Results indicated that both the thermal degradation of anthocyanin and visual color all followed first-order reaction kinetics, and they could be expressed by Arrhenius equation. The activation energy values for the anthocyanins degradation and visual color degradation were 55.81 and 47.51 kJ mol-1, respectively. The linear relationship between visual color and anthocyanin content was obtained. Furthermore, during thermal processing of blood orange juice, the formulas about the linear relationships showed no significant difference at selected temperatures. So, the relationships between visual color and anthocyanins content during thermal processing at selected temperatures could be described by the same equation: a*/a0 *=0.559(C/C0)+0.43. It might be inferred that visual color measured instantaneously by tristimulus colorimeters for on-line quality control, could be used to predict the anthocyanins degradation during thermal processing of blood orange juice.

关键词: blood orange juice, anthocyanins, visual color, degradation kinetics, relationship

Abstract: Thermal degradation kinetics of anthocyanins and visual color (Hunter a* value) of blood orange juice were studied at selected temperatures (70-90°C). Results indicated that both the thermal degradation of anthocyanin and visual color all followed first-order reaction kinetics, and they could be expressed by Arrhenius equation. The activation energy values for the anthocyanins degradation and visual color degradation were 55.81 and 47.51 kJ mol-1, respectively. The linear relationship between visual color and anthocyanin content was obtained. Furthermore, during thermal processing of blood orange juice, the formulas about the linear relationships showed no significant difference at selected temperatures. So, the relationships between visual color and anthocyanins content during thermal processing at selected temperatures could be described by the same equation: a*/a0 *=0.559(C/C0)+0.43. It might be inferred that visual color measured instantaneously by tristimulus colorimeters for on-line quality control, could be used to predict the anthocyanins degradation during thermal processing of blood orange juice.

Key words: blood orange juice, anthocyanins, visual color, degradation kinetics, relationship