Department of Traditional Chinese Medicine, College of Agronomy, Henan Agricultural University, Zhengzhou 450001, China.
Baiyunmugang Biological Technology Company, Dengfeng 452471, China.
Molecules. 2019 Jun 14;24(12):2232. doi: 10.3390/molecules24122232.
Starches from the bulbils of Thunb. cv. Tiegun were isolated by aqueous steeping (SBS), enzyme extraction (EBS), and alkaline extraction (ABS) methods, respectively. The physicochemical, mineral composition, thermal and morphological characteristics of these starches were investigated. The starch granules were oval, spherical and kidney-shaped and its crystal type is a mixture of A-type and B-type patterns. The starches having larger average granule size showed more amylose and phosphorus contents than those with smaller average granule size. Differential scanning calorimetry (DSC) showed that the SBS had an endothermic transition ranging from 65.8 °C to 76.3 °C with an enthalpy of 2.0 J/g. The endothermic transitions of ABS and EBS showed the regions of 67.9 °C to 73.0 °C, and 66.8 °C to 82.0 °C, respectively. The gelationization enthalpies of ABS and EBS were 13.8 and 11.5 J/g, respectively. Additionally, ABS presented greater clarity in comparison with EBS and SBS. Pasting properties indicated that ABS had the highest peak viscosity, breakdown, but SBS had the lowest trough, final viscosity, setback, and pasting temperature. Generally, ABS and EBS could be used as food thickener or frozen food additives. SBS and EBS were potential technological alternatives in quality preservation of frozen starch-based products and other industrial applications.
采用水浸提(SBS)、酶提取(EBS)和碱提取(ABS)方法分别从百合科百合属 Tiegun 珠芽中提取淀粉。研究了这些淀粉的理化性质、矿物质组成、热特性和形态特征。淀粉颗粒呈椭圆形、球形和肾形,其晶体类型为 A 型和 B 型的混合物。平均粒径较大的淀粉颗粒具有较高的直链淀粉和磷含量。差示扫描量热法(DSC)表明,SBS 的热焓为 2.0 J/g,具有 65.8°C 至 76.3°C 的吸热转变。ABS 和 EBS 的吸热转变分别在 67.9°C 至 73.0°C 和 66.8°C 至 82.0°C 范围内。ABS 和 EBS 的凝胶化焓分别为 13.8 和 11.5 J/g。此外,与 EBS 和 SBS 相比,ABS 的透明度更高。糊化特性表明,ABS 具有最高的峰值黏度、下降值,但 SBS 具有最低的低谷黏度、最终黏度、回生值和糊化温度。一般来说,ABS 和 EBS 可用作食品增稠剂或冷冻食品添加剂。SBS 和 EBS 可能是冷冻淀粉基产品质量保持和其他工业应用的潜在技术替代品。