Holopainen Ulla R M, Pihlava Juha-Matti, Serenius Marjo, Hietaniemi Veli, Wilhelmson Annika, Poutanen Kaisa, Lehtinen Pekka
VTT Technical Research Centre of Finland, P.O. Box 1000, FI-02044 VTT, Finland.
J Agric Food Chem. 2014 Sep 3;62(35):8875-82. doi: 10.1021/jf500857e. Epub 2014 Aug 19.
Milling properties, water uptake, and modification in malting were studied in 14 barley (Hordeum vulgare L.) lots from two consecutive crop years. In all barley lots studied, grains with lower β-glucan and protein content and higher starch content produced finer flours upon milling. Grains with lower β-glucan content also hydrated more rapidly during steeping. A detailed study of two cultivars from two crop years indicated that similar environmental conditions could induce a higher β-glucan content and concentration of aggregated B hordein in the peripheral endosperm and a lower proportion of C hordein entrapped among aggregated hordeins deeper within the endosperm. These characteristics were associated with production of coarser flours during milling as well as with slower water uptake and lower modification. However, the data do not distinguish between the effect of β-glucan content and that of hordein localization. Distribution of β-glucan or total protein within the kernel was not linked to hydration or modification.
对来自连续两个作物年度的14个大麦（Hordeum vulgare L.）批次的制粉特性、吸水率和麦芽制备过程中的变化进行了研究。在所有研究的大麦批次中，β-葡聚糖和蛋白质含量较低且淀粉含量较高的籽粒在研磨时能产生更细的面粉。β-葡聚糖含量较低的籽粒在浸泡过程中也能更快地吸水。对两个作物年度的两个品种进行的详细研究表明，相似的环境条件会导致外周胚乳中β-葡聚糖含量和聚集的B醇溶蛋白浓度升高，而胚乳内部更深层聚集的醇溶蛋白中截留的C醇溶蛋白比例降低。这些特性与研磨过程中产生较粗的面粉以及吸水较慢和麦芽制备程度较低有关。然而，这些数据并未区分β-葡聚糖含量的影响和醇溶蛋白定位的影响。籽粒内β-葡聚糖或总蛋白的分布与吸水或麦芽制备程度无关。
