碳酸钠脱色对木耳可溶性膳食纤维性质的影响

Effects of sodium carbonated decolorization on the properties of Auricularia auricula soluble dietary fiber

中文关键词:  碳酸钠  木耳  可溶性膳食纤维  性质

英文关键词:sodium carbonated  Auricularia auricular  soluble dietary fiber  property

中文摘要:

      目的 通过对木耳可溶性膳食纤维理化性质的研究, 分析碳酸钠脱色对木耳可溶性膳食纤维性质的影响。方法 测定脱色前后可溶性膳食纤维的水合能力(持水力、结合水力、膨胀性)、吸附性(持油力、吸附胆固醇能力、吸附亚硝酸根离子能力)、扫描电镜和红外光谱图, 确定碳酸钠处理对可溶性膳食纤维性质的影响。结果 碳酸钠脱色处理使木耳可溶性膳食纤维表面变得疏松多孔、层次分明, 与未脱色木耳可溶性膳食纤维相比化学组成基本相同, 结合水能力略有降低, 但吸附性有所增强。结论 碳酸钠处理改变了木耳可溶性膳食纤维的表面结构, 减少了亲水基团的数量, 但其基本性质变化较小, 不影响木耳膳食纤维的正常应用。

英文摘要:

      Objective To investigate the physicochemical properties of Auricularia auricula soluble dietary fiber, and analyze the effects of sodium carbonated decolorization on the properties of Auricularia auricula soluble dietary fiber (SDF). Methods The effects of sodium carbonated decolorization on the properties of Auricularia auricula soluble dietary fiber were confirmed by determinations of hydration capacities (water absorption, water holding capacity, swelling capacity), adsorption capacities (oil-holding capacity, cholesterol and nitrite ion adsorption capacity), and scanning electron microscope. Results Compared with Auricularia auricula soluble dietary fiber, the sodium carbonated decolorization treatments slightly decreased the hydration capacity, enhanced the adsorption capacity. The surface became porous structured, and the chemical composition was similar. Conclusion The sodium carbonate treatment changes the surface structure of Auricularia auricula soluble dietary fiber, and reduces the number of hydrophilic groups, but the overall nature have a small change, which can be used in normal production.