Bin Dong, Yijie Wang, Lili Han, Guirong Cui, Yuna Wang, Zhiwei Su
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Active ingredients in waste of distillers’ grains and their resource utilization
During the preparation of alcohol from grains, substantial amounts of value-added byproducts, known as distillers' grains, are generated. These byproducts are rich in nutrients, including dietary fiber (hemicellulose, cellulose, and lignin), protein, simple sugars (glucose, xylose, and arabinose), minerals, vitamins, and lipids. However, the rapid global expansion of the alcohol industry has resulted in tens of thousands of tons of distillers' grains remaining without appropriate disposal methods. Therefore, it is essential to identify innovative solutions that reintegrate waste and byproducts into the production cycle, thereby yielding high-quality products. In this review, we first summarize the classification, sources, and components of distillers' grains. We then analyze and compare their utilization value and extraction technologies, as well as their development and market status. Additionally, we summarize the categories of active substances found in distillers' grains and assess the current status and potential applications for resource recycling. Ultimately, this review aims to provide insights into the reuse of various active ingredients in different types of distillers' grains, contributing to the reduction of carbon emissions and achieving a balance of economic, environmental, and social benefits worldwide.
期刊介绍:
Reviews in Environmental Science and Bio/Technology is a publication that offers easily comprehensible, reliable, and well-rounded perspectives and evaluations in the realm of environmental science and (bio)technology. It disseminates the most recent progressions and timely compilations of groundbreaking scientific discoveries, technological advancements, practical applications, policy developments, and societal concerns encompassing all facets of environmental science and (bio)technology. Furthermore, it tackles broader aspects beyond the natural sciences, incorporating subjects such as education, funding, policy-making, intellectual property, and societal influence.