Cécile Chenot, Margaux Simon, Alexandre Dusart, S. Collin
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引用次数: 0
摘要
虽然Saaz芳香品种仍然被归类为富含总黄酮的品种，但当双重用途品种Citra, CTZ, Amarillo, Eureka!比如，Mandarina Bavaria, Mosaic, Polaris和Sabro。酒花黄烷-3-醇单体、二聚体和三聚体的含量(HPLC-MS/MS定量)受品种和收获年份的影响较大。另一方面，在连续两个收获年份中，同一品种的儿茶素/表儿茶素比值(以及B3/B2比值)保持稳定。在9个品种中，柑橘和雪桔的儿茶素/表儿茶素含量显著高于其他品种(均<1.6)，而北极星的单体含量最低(均小于800 mg/kg)。这些独特的轮廓会影响啤酒花啤酒的胶体和颜色稳定性。
Exploring Hop Varieties with Discriminating Flavan-3-ol Profiles Likely to Improve Color and Colloidal Stability of Beers
While the Saaz aromatic variety remains classified as a total-flavanoid-rich cultivar, no inverse correlation was found between total flavanoids and the α-acid content when the dual-purpose varieties Citra, CTZ, Amarillo, Eureka!, Mandarina Bavaria, Mosaic, Polaris, and Sabro were considered. The levels of hop flavan-3-ol monomers, dimers, and trimers (quantitated by HPLC-MS/MS) appeared strongly influenced by variety and harvest year. On the other hand, the catechin/epicatechin ratio (and B3/B2 ratio) proved stable within the same variety through two successive harvest years. Among the nine herein-investigated varieties, Citra and Saaz displayed notable catechin/epicatechin ratios (>3.7 compared to <1.6 for the others), whereas Polaris exhibited the lowest monomer content (less than 800 mg/kg). These distinctive profiles could impact the colloidal and color stability of hop-forward beers.
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