New value‐adding applications of spent grain, a co‐product of brewhouse operations, are considered in the context of a sustainable circular economy. Previous studies have focused on the compounds remaining in the solid phase of the spent grain. However, depending on the dewatering process, the separated water also contains relevant fractions of nutritionally and physiologically valuable compounds including proteins, carbohydrates and polyphenols. Accordingly, the work reported here considers the two fractions and presents a detailed view of relevant substances especially those from liquor. The reported mass balance is the result of these investigations, supplemented by values from the literature. The potential value of these compounds for industrial biotechnology is examined in an economic assessment. ? 2022 The Authors. Journal of the Institute of Brewing published by John Wiley Sons Ltd on behalf of The Institute of Brewing Distilling.
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机译：在可持续循环经济的背景下，考虑了废谷物（糖化厂运营的副产品）的新增值应用。以前的研究主要集中在废谷物固相中残留的化合物上。然而，根据脱水过程的不同，分离出的水还含有营养和生理价值化合物的相关部分，包括蛋白质、碳水化合物和多酚。因此，这里报告的工作考虑了这两个部分，并详细介绍了相关物质，尤其是来自酒的物质。报告的质量平衡是这些研究的结果，并辅以文献中的值。这些化合物对工业生物技术的潜在价值在经济评估中进行了研究。?2022 作者。《酿造研究所杂志》（Journal of the Institute of Brewing）由John Wiley & Sons Ltd代表酿造与蒸馏研究所（The Institute of Brewing & Distilling）出版。
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