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Protective effect of whey protein hydrolysates against hydrogen peroxide-induced oxidative stress on PC12 cells

Abstract

The protective effect of whey protein hydrolysates (WPHs) against H2O2-induced oxidative damage on rat pheochromocytoma line 12 (PC12) cells was studied. Whey protein was hydrolyzed by pepsin and trypsin and purified by macrospore absorption resins. PC12 cells were pretreated with WPHs (from 369 to 1,980 Da) at different concentrations for 2 h, then washed and incubated with 100 μM H2O2 in the presence of WPHs for another 24 h. With 100–400 μg WPH/ml the viable cells increased by 20–30 % when incubated with H2O2 suggesting that they may play a role as antioxidant in foods.

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Acknowledgments

We are grateful for the financial support by the State Natural Sciences Foundation Monumental Projects (Nos. 31071491 and 30870727), Program for New Century Excellent Talents in University (NCET-09-0436) from the People’s Republic of China, and the Natural Science Foundation of Jiangsu Province (No. BK2010156).

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Correspondence to Rong-Rong Lu.

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Zhang, QX., Ling, YF., Sun, Z. et al. Protective effect of whey protein hydrolysates against hydrogen peroxide-induced oxidative stress on PC12 cells. Biotechnol Lett 34, 2001–2006 (2012). https://doi.org/10.1007/s10529-012-1017-1

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  • DOI: https://doi.org/10.1007/s10529-012-1017-1

Keywords

  • Antioxidant peptide
  • Hydrogen peroxide
  • Radical scavenging activity
  • PC12 cells
  • Reactive oxygen species