Department of Agriculture, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada.
Bioresour Technol. 2011 Jul;102(13):6920-7. doi: 10.1016/j.biortech.2011.03.075. Epub 2011 Mar 30.
This study focused on the detection of value-added co-products in dried distiller's grain plus soluble (DDGS), a possibility that could open new avenues for further processing and marketing of DDGS and improving economic sustainability of ethanol industry. Varieties of triticale, wheat and two benchmarks, CPS wheat and Pioneer Hi-Bred corn, were fermented using two very high gravity (VHG) fermentation approaches: jet-cooking and raw starch processing (STARGEN fermentation). DDGS from STARGEN fermentation could be promising sources of value-added co-products. Pronghorn triticale DDGS (STARGEN fermentation) had the highest concentration of sterols (3.7 mg/g), phenolic compounds (13.61 mg GAE/g), and β-glucan (2.07%). CDC Ptarmigan DDGS (STARGEN fermentation) had the highest concentration of tocopherols and tocotrienols (107.0 μg/g), 1.93% of β-glucan, and 53.0mg/g of fatty acids. AC Reed DDGS (STARGEN method) showed 1.97% of β-glucan. This study shows that proper choice of fermentation approach and feedstock for ethanol production could improve commercial quality of DDGS.
本研究专注于检测干酒糟及其可溶物（DDGS）中的增值联产物，这可能为进一步加工和销售 DDGS 开辟新途径，并提高乙醇行业的经济可持续性。黑小麦、小麦和两个基准品种（CPS 小麦和先锋高油玉米）分别采用两种超高浓度（VHG）发酵方法：喷射蒸煮和生淀粉加工（STARGEN 发酵）进行发酵。来自 STARGEN 发酵的 DDGS 可能是增值联产物的有前景的来源。叉角羚黑小麦 DDGS（STARGEN 发酵）的甾醇（3.7mg/g）、酚类化合物（13.61mgGAE/g）和β-葡聚糖（2.07%）浓度最高。CDC 雪鸡黑小麦 DDGS（STARGEN 发酵）的生育酚和三烯生育酚（107.0μg/g）、β-葡聚糖（1.93%）和脂肪酸（53.0mg/g）浓度最高。AC Reed DDGS（STARGEN 法）的β-葡聚糖含量为 1.97%。本研究表明，选择适当的发酵方法和乙醇生产原料可以提高 DDGS 的商业质量。
