The adsorption of polyphenols from apples, a good source of polyphenols in the human diet, onto β-glucan, a soluble dietary fibre were studied. Polyphenols were extracted from the flesh and peel of two apple varieties (wild apple and Slavonska srčika) and adsorbed onto β-glucan for 16 hours. The adsorption capacities (mg/g) and equilibrium polyphenol concentrations (mg/l) were modelled with Freundlich and Langmuir isotherms. Polyphenols from the flesh and peel showed different behaviours – flesh polyphenols exhibited greater affinity and peel polyphenols greater theoretical adsorption capacity. The analysis of individual polyphenols with high-performance liquid chromatography revealed that the composition of the flesh and peel differed (flesh was rich in phenolic acids, peel in flavonols) which could explain the contrasting adsorption behaviour. This study shows that polyphenols from apples can be adsorbed onto β-glucan, that the flesh and peel exhibit distinct adsorption behaviours and that the polyphenol composition can affect the adsorption mechanism.
Gao Ruiping, Liu Hui, Peng Zhen, Wu Zhen, Wang Yuxue, Zhao Guohua (2012): Adsorption of (−)-epigallocatechin-3-gallate (EGCG) onto oat β-glucan. Food Chemistry, 132, 1936-1943 https://doi.org/10.1016/j.foodchem.2011.12.029
Gorelik Shlomit, Ligumsky Moshe, Kohen Ron, Kanner Joseph (2008): The Stomach as a “Bioreactor”: When Red Meat Meets Red Wine. Journal of Agricultural and Food Chemistry, 56, 5002-5007 https://doi.org/10.1021/jf703700d
Jakobek Lidija (2015): Interactions of polyphenols with carbohydrates, lipids and proteins. Food Chemistry, 175, 556-567 https://doi.org/10.1016/j.foodchem.2014.12.013
Jakobek Lidija, García-Villalba Rocio, Tomás-Barberán Francisco A. (2013): Polyphenolic characterisation of old local apple varieties from Southeastern European region. Journal of Food Composition and Analysis, 31, 199-211 https://doi.org/10.1016/j.jfca.2013.05.012
Jakobek Lidija, Boc Martina, Barron Andrew R. (2015): Optimization of Ultrasonic-Assisted Extraction of Phenolic Compounds from Apples. Food Analytical Methods, 8, 2612-2625 https://doi.org/10.1007/s12161-015-0161-3
Kammerer Dietmar R., Saleh Zaid S., Carle Reinhold, Stanley Roger A. (2007): Adsorptive recovery of phenolic compounds from apple juice. European Food Research and Technology, 224, 605-613 https://doi.org/10.1007/s00217-006-0346-5
Kanner Joseph, Gorelik Shlomit, Roman Sirota, Kohen Ron (2012): Protection by Polyphenols of Postprandial Human Plasma and Low-Density Lipoprotein Modification: The Stomach as a Bioreactor. Journal of Agricultural and Food Chemistry, 60, 8790-8796 https://doi.org/10.1021/jf300193g
Le Bourvellec C., Bouchet B., Renard C.M.G.C. (2005): Non-covalent interaction between procyanidins and apple cell wall material. Part III: Study on model polysaccharides. Biochimica et Biophysica Acta, 1725: 10–18.
Le Bourvellec C., Renard C.M.G.C. (2012): Interactions between Polyphenols and Macromolecules: Quantification Methods and Mechanisms. Critical Reviews in Food Science and Nutrition, 52, 213-248 https://doi.org/10.1080/10408398.2010.499808
Mekoue Nguela J., Poncet-Legrand C., Sieczkowski N., Vernhet A. (2016): Interactions of grape tannins and wine polyphenols with a yeast protein extract, mannoproteins and β-glucan. Food Chemistry, 210, 671-682 https://doi.org/10.1016/j.foodchem.2016.04.050
Renard Catherine M.G.C, Baron A, Guyot S, Drilleau J.-F (2001): Interactions between apple cell walls and native apple polyphenols: quantification and some consequences. International Journal of Biological Macromolecules, 29, 115-125 https://doi.org/10.1016/S0141-8130(01)00155-6
Soto María Luisa, Moure Andrés, Domínguez Herminia, Parajó Juan Carlos (2011): Recovery, concentration and purification of phenolic compounds by adsorption: A review. Journal of Food Engineering, 105, 1-27 https://doi.org/10.1016/j.jfoodeng.2011.02.010
Tsao Rong, Yang Raymond, Young J. Christopher, Zhu Honghui (2003): Polyphenolic Profiles in Eight Apple Cultivars Using High-Performance Liquid Chromatography (HPLC). Journal of Agricultural and Food Chemistry, 51, 6347-6353 https://doi.org/10.1021/jf0346298
Veverka Miroslav, Dubaj Tibor, Gallovič Ján, Jorík Vladimír, Veverková Eva, Mičušík Matej, Šimon Peter (2014): Beta-glucan complexes with selected nutraceuticals: Synthesis, characterization, and stability. Journal of Functional Foods, 8, 309-318 https://doi.org/10.1016/j.jff.2014.03.032
Wang Yuxue, Liu Jia, Chen Fang, Zhao Guohua (2013): Effects of Molecular Structure of Polyphenols on Their Noncovalent Interactions with Oat β-glucan. Journal of Agricultural and Food Chemistry, 61, 4533-4538 https://doi.org/10.1021/jf400471u
Waterhouse A. (2016): Folin-Ciocalteau micro-method for total phenol in wine. Available at http://waterhouse.ucdavis.edu/faqs/folin-ciocalteau-micro-method-for-total-phenol-in-wine (accessed April 16, 2016).
Wojdyło Aneta, Oszmiański Jan, Laskowski Piotr (2008): Polyphenolic Compounds and Antioxidant Activity of New and Old Apple Varieties. Journal of Agricultural and Food Chemistry, 56, 6520-6530 https://doi.org/10.1021/jf800510j
Wu Zhen, Li Hong, Ming Jian, Zhao Guohua (2011): Optimization of Adsorption of Tea Polyphenols into Oat β-Glucan Using Response Surface Methodology. Journal of Agricultural and Food Chemistry, 59, 378-385 https://doi.org/10.1021/jf103003q