H. Rajha, N. Darra, Z. Hobaika, N. Boussetta, E. Vorobiev, R. Maroun and N. Louka, "Extraction of Total Phenolic Compounds, Flavonoids, Anthocyanins and Tannins from Grape Byproducts by Response Surface Methodology. Influence of Solid-Liquid Ratio, Particle Size, Time, Temperature and Solvent Mixtures on the Optimization Process,"
Food and Nutrition Sciences, Vol. 5 No. 4, 2014, pp. 397-409. doi:
10.4236/fns.2014.54048.