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The Effects of Temperature and Ethanol on Proanthocyanidin Adsorption to Grape Cell Wall Material in the Presence of Anthocyanins.
Molecules. 2020 Sep 10; 25(18)M

Abstract

The quantitative and qualitative impacts of anthocyanins on proanthocyanidin adsorption to grape-derived cell wall material were investigated in fifteen unique systems of varying temperatures, ethanol concentrations, and proanthocyanidin concentrations. Proanthocyanidin solutions were exposed to cell wall material and monitored for changes in concentration over 24 h. Increases in both temperature and ethanol resulted in a larger retention of proanthocyanidins in solution and typically faster adsorption kinetics. Analysis of the solution after exposure to cell wall revealed a significant reduction in the molecular weight of proanthocyanidins present in solution, suggesting that anthocyanins do not alter a previously described mechanism of preferentially binding large molecular weight molecules. Additionally, a reduction in polymeric pigment abundance was noted in most conditions, suggesting rapid formation of polymeric pigment in the model solution and preferential adsorption of the polymeric pigment to cell wall material. Compared to a previous study of proanthocyanidin adsorption in the absence of anthocyanins, a significantly larger percentage of proanthocyanidin material was lost via adsorption-up to 70% of available material. In a winemaking context, this may suggest a preferential loss of polymeric pigment via adsorption to cap cell wall material compared to non-pigmented proanthocyanidins and free anthocyanins.

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Authors+Show Affiliations

Beaver JW
Department of Viticulture and Enology, University of California, One Shields Avenue, Davis, CA 95616, USA. Department of Chemistry and Biochemistry, University of Texas at Tyler, 3900 University Blvd, Tyler, TX 75707, USA.
Miller KV
Department of Viticulture and Enology, University of California, One Shields Avenue, Davis, CA 95616, USA.
Medina-Plaza C
Department of Viticulture and Enology, University of California, One Shields Avenue, Davis, CA 95616, USA.
Dokoozlian N
E&J Gallo Winery, 600 Yosemite Blvd, Modesto, CA 95354, USA.
Ponangi R
E&J Gallo Winery, 600 Yosemite Blvd, Modesto, CA 95354, USA.
Blair T
E&J Gallo Winery, 600 Yosemite Blvd, Modesto, CA 95354, USA.
Block D
Department of Viticulture and Enology, University of California, One Shields Avenue, Davis, CA 95616, USA.
Oberholster A
Department of Viticulture and Enology, University of California, One Shields Avenue, Davis, CA 95616, USA.

MeSH

AdsorptionAnthocyaninsCell WallEthanolFruitKineticsMolecular WeightPigments, BiologicalProanthocyanidinsTemperatureVitisWine

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32927698

Citation

Beaver, Jordan W., et al. "The Effects of Temperature and Ethanol On Proanthocyanidin Adsorption to Grape Cell Wall Material in the Presence of Anthocyanins." Molecules (Basel, Switzerland), vol. 25, no. 18, 2020.
Beaver JW, Miller KV, Medina-Plaza C, et al. The Effects of Temperature and Ethanol on Proanthocyanidin Adsorption to Grape Cell Wall Material in the Presence of Anthocyanins. Molecules. 2020;25(18).
Beaver, J. W., Miller, K. V., Medina-Plaza, C., Dokoozlian, N., Ponangi, R., Blair, T., Block, D., & Oberholster, A. (2020). The Effects of Temperature and Ethanol on Proanthocyanidin Adsorption to Grape Cell Wall Material in the Presence of Anthocyanins. Molecules (Basel, Switzerland), 25(18). https://doi.org/10.3390/molecules25184139
Beaver JW, et al. The Effects of Temperature and Ethanol On Proanthocyanidin Adsorption to Grape Cell Wall Material in the Presence of Anthocyanins. Molecules. 2020 Sep 10;25(18) PubMed PMID: 32927698.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The Effects of Temperature and Ethanol on Proanthocyanidin Adsorption to Grape Cell Wall Material in the Presence of Anthocyanins. AU - Beaver,Jordan W, AU - Miller,Konrad V, AU - Medina-Plaza,Cristina, AU - Dokoozlian,Nick, AU - Ponangi,Ravi, AU - Blair,Thomas, AU - Block,David, AU - Oberholster,Anita, Y1 - 2020/09/10/ PY - 2020/08/08/received PY - 2020/08/30/revised PY - 2020/09/07/accepted PY - 2020/9/15/entrez PY - 2020/9/16/pubmed PY - 2021/3/16/medline KW - adsorption KW - anthocyanins KW - cell wall material KW - grape KW - isotherm KW - kinetics KW - modeling KW - proanthocyanidins KW - wine JF - Molecules (Basel, Switzerland) JO - Molecules VL - 25 IS - 18 N2 - The quantitative and qualitative impacts of anthocyanins on proanthocyanidin adsorption to grape-derived cell wall material were investigated in fifteen unique systems of varying temperatures, ethanol concentrations, and proanthocyanidin concentrations. Proanthocyanidin solutions were exposed to cell wall material and monitored for changes in concentration over 24 h. Increases in both temperature and ethanol resulted in a larger retention of proanthocyanidins in solution and typically faster adsorption kinetics. Analysis of the solution after exposure to cell wall revealed a significant reduction in the molecular weight of proanthocyanidins present in solution, suggesting that anthocyanins do not alter a previously described mechanism of preferentially binding large molecular weight molecules. Additionally, a reduction in polymeric pigment abundance was noted in most conditions, suggesting rapid formation of polymeric pigment in the model solution and preferential adsorption of the polymeric pigment to cell wall material. Compared to a previous study of proanthocyanidin adsorption in the absence of anthocyanins, a significantly larger percentage of proanthocyanidin material was lost via adsorption-up to 70% of available material. In a winemaking context, this may suggest a preferential loss of polymeric pigment via adsorption to cap cell wall material compared to non-pigmented proanthocyanidins and free anthocyanins. SN - 1420-3049 UR - https://www.unboundmedicine.com/medline/citation/32927698/The_Effects_of_Temperature_and_Ethanol_on_Proanthocyanidin_Adsorption_to_Grape_Cell_Wall_Material_in_the_Presence_of_Anthocyanins_ DB - PRIME DP - Unbound Medicine ER -