FOOD SCIENCE ›› 2017, Vol. 38 ›› Issue (13): 90-95.doi: 10.7506/spkx1002-6630-201713015

• Basic Research • Previous Articles     Next Articles

Effect of Glycation Combined with Pulsed Electric Field Pretreatment on Allergenicity and Functional Properties of β-Lactoglobulin

TIAN Ming, TU Zongcai, WANG Hui, YANG Wenhua, LI Xue, SONG Qidong   

  1. 1. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China; 2. College of Life Science, Jiangxi Normal University, Nanchang 330022, China
  • Online:2017-07-15 Published:2017-07-11

Abstract: This research aimed to investigate the effect of pulsed electric field (PEF) pretreatment combined with glycation on the allergenicity and functional properties of β-lactoglobulin (β-Lg). After being subjected to PEF treatment at different electric intensities, β-Lg solution was added with galactose at a ratio of 1:2 and then they were allowed to react at pH 7.4 and 60 ℃ for 3 h. The results showed that glycation after PEF pretreatment significantly reduced the free amino group content of β-Lg and decreased the allergenicity. The lowest allergenicity of β-LG was observed by PEF pretreatment at 15 kV/cm for 90 μs, accompanied by a significant improvement in the solubility, emulsifying property, emulsion stability and antioxidant activity (P < 0.05). Therefore, glycation combined with PEF pretreatment will have potential application for producing β-Lg with low allergenicity and favorable functional properties.

Key words: pulsed electric field, glycation, β-lactoglobulin, allergenicity, functional properties

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