Beijing Key Laboratory for Food Non-thermal Processing, College of Food Science and Nutritional Engineering, China Agricultural University, P. O. Box 40, No. 17 Qinghuadonglu, Haidian, Beijing 100083, PR China; Eastern Regional Research Center, Agricultural Research Service, US Department of Agricultural, 600 East Mermaid Lane, Wyndmoor, PA 19038, USA.
Eastern Regional Research Center, Agricultural Research Service, US Department of Agricultural, 600 East Mermaid Lane, Wyndmoor, PA 19038, USA.
Food Chem. 2017 Sep 1;230:225-233. doi: 10.1016/j.foodchem.2017.03.028. Epub 2017 Mar 7.
This study was undertaken to isolate and characterize three carbohydrate-rich fractions: Hemicellulose A (Hemi. A), Hemicellulose B (Hemi. B) and cellulose-rich residue (CRF) from sorghum bran (SBR), sorghum bagasse (SBA) and sorghum biomass (SBI). The monosaccharide composition of the Hemi. A and Hemi. B fractions was determined, indicating that SBR has a highly branched structure. The analysis of insoluble dietary fiber (IDF), soluble dietary fiber (SDF) and total dietary fiber (TDF) showed that TDF and IDF contents in original sorghum materials were in the following order: SBA˃SBI˃SBR. CRF from SBA was rich in IDF. Hemi. B fractions were completely soluble in water and so they were rich in SDF. CRFs from all sorghum sources show high water holding capacity (22.76 to 35.27g water/g CRF). The emulsion stability study showed that the Hemi. B from all sorghum sources had a better emulsion stability than the well-studied corn fiber gum (CFG).
本研究旨在从高粱糠（SBR）、高粱蔗渣（SBA）和高粱生物质（SBI）中分离和鉴定三种富含碳水化合物的组分：半纤维素 A（Hemi. A）、半纤维素 B（Hemi. B）和富含纤维素的残渣（CRF）。测定了 Hemi. A 和 Hemi. B 级分的单糖组成，表明 SBR 具有高度支化的结构。不溶性膳食纤维（IDF）、可溶性膳食纤维（SDF）和总膳食纤维（TDF）的分析表明，原始高粱材料中的 TDF 和 IDF 含量按以下顺序排列：SBA>SBI>SBR。SBA 的 CRF 富含 IDF。Hemi. B 级分完全溶于水，因此富含 SDF。所有高粱来源的 CRFs 均具有高持水力（22.76 至 35.27g 水/g CRF）。乳液稳定性研究表明，所有高粱来源的 Hemi. B 的乳液稳定性均优于研究充分的玉米纤维胶（CFG）。
