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Acid and alkaline hydrolysis extraction of non-extractabke polyphenols in blueberries optimisation by response surface methodology

Author

Listed:
  • Anwei Cheng

    (Institute of Agro-food Science and Technology, Shandong Academy of Agricultural Science, Jinan, P.R. China)

  • Haiqing Yan

    (Institute of Agro-food Science and Technology, Shandong Academy of Agricultural Science, Jinan, P.R. China
    College of Food and Bioengineering, Qilu University of Technology, Jinan, P.R. China)

  • Caijing Han

    (Institute of Agro-food Science and Technology, Shandong Academy of Agricultural Science, Jinan, P.R. China
    College of Food Science and Technology, Jilin Agricultural University, Changchun, P.R. China)

  • Xiangyan Chen

    (Institute of Agro-food Science and Technology, Shandong Academy of Agricultural Science, Jinan, P.R. China)

  • Wenliang Wang

    (Institute of Agro-food Science and Technology, Shandong Academy of Agricultural Science, Jinan, P.R. China)

  • Chunyang Xie

    (College of Food Science and Technology, Jilin Agricultural University, Changchun, P.R. China)

  • Jingran Qu

    (College of Food and Bioengineering, Qilu University of Technology, Jinan, P.R. China)

  • Zhiqing Gong

    (Institute of Agro-food Science and Technology, Shandong Academy of Agricultural Science, Jinan, P.R. China)

  • Xianquan Shi

    (Institute of Agro-food Science and Technology, Shandong Academy of Agricultural Science, Jinan, P.R. China)

Abstract

Polyphenols, including extractable polyphenols (EPP) and non-extractable polyphenols (NEPP), are natural and secondary metabolic substances in plants that have beneficial properties to human health. However, NEPP associated with dietary fiber and protein are not taken into account in most literature data. In this paper, NEPP were released from blueberries with acid or alkaline hydrolysis methods, and the related extraction conditions were determined and optimised by response surface methodology (RSM). The results showed that NEPP yield obtained with alkaline hydrolysis was much higher than that obtained with acid treatment. The NEPP yield in alkaline hydrolysis process was significantly affected by the NaOH concentration and liquid/solid ratio, while in the acid hydrolysis process, the NEPP yield was significantly affected by the temperature, time and liquid/solid ratio. The second order polynomial models were developed for predicting NEPP content in blueberries. The optimisation of the extraction process of NEPP in blueberries would provide a good idea and basis for the application of non-extractable fractions.

Suggested Citation

  • Anwei Cheng & Haiqing Yan & Caijing Han & Xiangyan Chen & Wenliang Wang & Chunyang Xie & Jingran Qu & Zhiqing Gong & Xianquan Shi, 2014. "Acid and alkaline hydrolysis extraction of non-extractabke polyphenols in blueberries optimisation by response surface methodology," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 32(3), pages 218-225.
    • Handle: RePEc:caa:jnlcjf:v:32:y:2014:i:3:id:257-2013-cjfs
    DOI: 10.17221/257/2013-CJFS
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