Biomass propagation for the production of active dry yeasts (ADY) is an economically important industrial process where cellular oxidative stress significantly limits yield and fermentative capacity in the final product. Oxidative stress affects macromolecular cell components, such as lipid and proteins, thus impairing many different cellular processes. Its detrimental effect is prevented and alleviated by complex signalling, detoxifying and protein protecting systems, which can be induced by antioxidant treatments. Here we validate the general beneficial effect of argan oil treatment in bench-top simulations of industrial yeast biomass propagation as an effective technological strategy to improve the biomass yield and fermentative capacity of ADY for subsequent wine making in grape must. We also identify biochemical and metabolic clues, and protein and enzymatic targets which contribute to the improved performance of yeasts in ADY production, which is relevant for future food industry applications.

生产活性干酵母（ADY）的生物质繁殖是一个经济上重要的工业过程，其中细胞氧化应激会显着限制最终产品的产量和发酵能力。氧化应激影响大分子细胞成分，例如脂质和蛋白质，从而损害许多不同的细胞过程。复杂的信号传导，解毒和蛋白质保护系统可预防和减轻其有害作用，而抗氧化处理可诱导这种作用。在这里，我们在工业酵母生物量繁殖的台式模拟中验证了摩洛哥坚果油处理的一般有益效果，这是一种有效的技术策略，可提高ADY的生物量产量和ADY发酵能力，以用于随后的葡萄汁酿酒。我们还确定了生化和代谢线索，