Abstract

The extraction and stability of red pigment from grape skin were studied. The optimum extraction conditions of red pigment from grape skin were showed as follows: the ethanol concentration was 70%; the extraction temperature was 70°C; the extraction time was 70 min. Under these conditions, the absorbency of extraction liquid of red pigment from grape skin was about 0.8. The red pigment from grape skin had good resistance to light decomposition and heating. Heating and lighting had little effect on the pigment stability.

Keywords:

Extraction, grape skin, red pigment, stability,

References

1. Escribano-Bailón, M.T., M.T. Guerra, J.C. Rivas-Gonzalo and C. Santos-Buelga, 1995. Proanthocyanidins in skins from different grape varieties. Z. Lebensm. Unters. For., 200(3): 221-224.
   CrossRef    
2. Francis, F.J., 1987. Lesser-known food colorants. Food Technol., 41(4): 62-68.
   
3. Giusti, M.M., L.E. Rodrýguez-Saona, J.R. Bagget, G.L. Reed, R.W. Durst and R.E. Wrolstad, 1999. Color and pigment stability of red radish and red-fleshed potato anthocyanins in juice model systems. J. Food Sci., 64(3): 451-456.
   CrossRef    
4. Maier, T., A. Gáppert, D.R. Kammerer, A. Schieber and R. Carle, 2008. Optimization of a process for enzyme-assisted pigment extraction from grape (Vitis vinifera L.) pomace. Eur. Food Res. Technol., 227(1): 267-275.
   CrossRef    
5. Morais, H., C. Ramos, E. Forgács, T. Cserháti, N. Matos, V. Almeida and J. Oliveira, 2002. Stability of anthocyanins extracted from grape skins. Chromatographia, 56(1): S173-S175.
   CrossRef    
6. Wang, H., Y. Pan, X. Tang and Z. Huang, 2006. Isolation and characterization of melanin from Osmanthus fragrans' seeds. LWT-Food Sci. Technol., 39(5): 496-502.
   
7. Wissgott, U. and K. Bortlik, 1996. Prospects for new natural food colorants. Trends Food Sci. Tech., 7(9): 298-302.
   CrossRef    
8. Wrolstad, R.E., R.W. Durst and J. Lee, 2005. Tracking color and pigment changes in anthocyanin products. Trends Food Sci. Tech., 16(9): 423-428.
   CrossRef    

Competing interests

The authors have no competing interests.

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The authors have no competing interests.