白葡萄酒中的新型蛋白质稳定:对热处理的-复合材料的研究
Daniela Silva-Barbieri1, Néstor Escalona1, Fernando N Salazar2
1Chemical and Bioprocess Engineering Department, School of Engineering, Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, P.O. Box 306, Santiago 7820436, Chile.
Food research international (Ottawa, Ont.)
|May 10, 2024
概括
一种新的环氧浸材质通过去除导致雾的蛋白质,有效地稳定白葡萄酒. 高温处理提高了其效率,为传统方法提供了具有成本效益和可持续性的替代方案.
科学领域:
- 食品科学 食品科学 食品科学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 蛋白质不稳定导致白葡萄酒中的雾,影响质量.
- 传统的托尼特处理有缺点,如改变葡萄酒的特性和浪费.
- 氧化 (ZrO2) 对蛋白质去除有希望,但具有成本效益的生产具有挑战性.
研究的目的:
- 开发和评估一种具有成本效益的,浸氧化 (ZrO2) 的多孔材料,以有效地去除白酒中的蛋白质.
- 研究烧温度对材料蛋白质吸附能力的影响.
- 评估材料在降低葡萄酒度和蛋白质含量方面的性能.
主要方法:
- 制备化 (Al2O3) 支和化 (ZrO2/Al2O3) 浸的化.
- 将材料置于各种化温度下,包括高温 (750°C).
- 评估葡萄酒的稳定性,度降低 (ΔNTU) 和蛋白质吸附能力.
主要成果:
- 高温处理 (750°C) 显著提高了葡萄酒的稳定性和蛋白质吸附.
- 最佳的ZrO2/Al2O3吸附剂可以将度从42 DNTU降低到18 DNTU.
- 总蛋白质含量减少了44%,目标蛋白质在10-70kDa之间.
结论:
- 多孔ZrO2/Al2O3材料,特别是经过高温处理后,对白葡萄酒中的蛋白质稳定是有效的.
- 这种方法提供了一个有希望的,成本高效的,环境可持续的替代品,比本托尼特处理.
- 优化的纹理特性,包括毛孔大小和减少酸性部位,有助于增强蛋白质的去除.
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