Barańska-Dołomisiewicz Alicja, Żubernik Joanna, Samborska Katarzyna, Jedlińska Aleksandra, Witrowa-Rajchert Dorota
Department of Food Engineering and Process Management, Institute of Food Sciences, Warsaw University of Life Sciences (WULS-SGGW), 02-776 Warsaw, Poland.
Foods. 2025 May 8;14(10):1663. doi: 10.3390/foods14101663.
Young barley leaves have been proven to distinguish themselves as highly potent in antioxidant activity, resulting from a high content of bioactive compounds. Due to their short storage time, it is crucial to prolong their shelf life. One of the methods that can be used is spray-drying, as it enables the production of powders that are highly valued in the food industry. This paper aimed to analyze the possibility of producing young barley leaf juice with improved properties. Juices were spray-dried with and without carriers at 100/60 °C inlet/outlet temperature using air of 1.5 g/m humidity as the drying medium. Maltodextrin (MD), Nutriose (N), and Arabic gum (AG) were used in a ratio 1:3 carrier/juice solids. The results proved that dehumidified air application enabled the production of young barley leaf juice powder, that was free of the carriers, of high retention coefficient (RC) of chlorophyll A and B (80.84 ± 6.56% and 87.05 ± 5.21%, respectively). No statistical difference was noted between variants with maltodextrin (chlorophyll A: 91.22 ± 5.07%, chlorophyll B: 71.72 ± 5.44%), Nutriose (chlorophyll A: 72.24 ± 5.32%, chlorophyll B: 67.04 ± 12.41%), and carrier-free powder; thus, the elimination of a carrier can be considered to effectively produce a "clean" label, functional product. The highest degradation among the tested bioactive compounds was noted for vitamin C.
嫩大麦叶已被证明具有很强的抗氧化活性，这归因于其高含量的生物活性化合物。由于其储存时间短，延长其保质期至关重要。喷雾干燥是一种可行的方法，因为它能够生产在食品工业中具有很高价值的粉末。本文旨在分析生产具有改良特性的嫩大麦叶汁的可能性。以1.5 g/m湿度的空气作为干燥介质，在100/60 °C的进/出口温度下，对有无载体的嫩大麦叶汁进行喷雾干燥。麦芽糊精（MD）、Nutriose（N）和阿拉伯胶（AG）按载体/果汁固体1:3的比例使用。结果表明，使用除湿空气能够生产不含载体的嫩大麦叶汁粉，叶绿素A和B的保留系数（RC）很高（分别为80.84±6.56%和87.05±5.21%）。使用麦芽糊精的变体（叶绿素A：91.22±5.07%，叶绿素B：71.72±5.44%）、Nutriose（叶绿素A：72.24±5.32%，叶绿素B：67.04±12.41%）和无载体粉末之间未观察到统计学差异；因此，可以认为去除载体能够有效生产“清洁”标签的功能性产品。在所测试的生物活性化合物中，维生素C的降解最为明显。
