Yeast-based by-products are greatly available, have a rich nutritional composition and functional properties. The spent brewer’s yeast (SBY) cells after enzymatic hydrolysis may be a sustainable and low-cost alternative as carrier material for encapsulation processes by spray drying. Our work had as main purpose to characterize the hydrolyzed SBY cell debris after the Maillard reaction and to study their potential as a microencapsulation wall material. SBY-based Maillard reaction products (MRPs) were used to encapsulate ascorbic acid (AA) by spray drying. The Maillard Reaction was able to improve the solubility of solids and proteins by 15% and promoted brown color development (230% higher Browning Index). SBY-based MRPs resulted in particles of a high encapsulation yield of AA (101.90 $\pm$ 5.5%), a moisture content of about 3.4%, water activity of 0.15, hygroscopicity values ranging from 13.8 to 19.3 g_H2O/100g and a glass transition temperature around 71 $°$C. The shape and microstructure of the produced particles were confirmed by scanning electron microscopy (MEV), indicating very similar structure for control and AA encapsulated particles. Fourier Transform Infrared Spectroscopy (FT-IR) results confirmed the presence of yeast cell debris in the surface of particles.[Ascorbic acid was successfully encapsulated in Maillard conjugates of hydrolyzed yeast cell debris of Saccharomyces pastorianus and maltodextrin as confirmed by optical microscopy, differential scanning calorimetry, MEV and FT-IR.

以酵母为基础的副产品非常多，具有丰富的营养成分和功能特性。酶水解后的啤酒废酵母（SBY）细胞可以作为可持续的，低成本的替代品，用作喷雾干燥封装工艺的载体材料。我们的工作的主要目的是表征美拉德反应后水解的SBY细胞碎片，并研究其作为微囊壁材料的潜力。基于SBY的美拉德反应产物（MRP）用于通过喷雾干燥来封装抗坏血酸（AA）。美拉德反应能够将固体和蛋白质的溶解度提高15％，并促进褐色发展（褐变指数提高230％）。基于SBY的MRP导致颗粒的AA封装率很高（101.90$\pm$5.5％），约3.4％的水分含量，0.15的水活度，13.8至19.3 g _{H 2 O} / 100g的吸湿度值和71左右的玻璃化温度$°$C.通过扫描电子显微镜（MEV）证实了产生的颗粒的形状和微观结构，表明对照和AA包封的颗粒的结构非常相似。傅里叶变换红外光谱（FT-IR）结果证实酵母细胞碎片的存在下，在颗粒的表面。[抗坏血酸成功包封在的水解酵母细胞碎片的美拉德缀合物酿酒巴斯德酵母和麦芽糖糊精通过光学显微镜，差示扫描证实量热法，MEV和FT-IR。