Wu Zhaogen, Ameer Kashif, Jiang Guihun
School of Public Health, Jilin Medical University, 5 Jilin Street, FengMan District, Jilin City, 132013 Jilin China.
Institute of Food and Nutritional Sciences, PMAS-Arid Agriculture University, Rawalpindi, 46300 Pakistan.
J Food Sci Technol. 2021 Jan;58(1):62-73. doi: 10.1007/s13197-020-04514-2. Epub 2020 May 7.
Sanchi flowers were traditionally used as functional medicinal ingredient in materials. The study was aimed at evaluating superfine powder product of Sanchi flower, hence in this study, five fractions of dried Sanchi flower powders (SFP) were prepared at variable particle sizes by superfine grinding and evaluated for changes in various properties. Superfine powder with median particle diameter of 25.57 μm was produced through grinding. It was evident from the environmental scanning electron microscopy analysis that during superfine grinding, mechanical shear stress played its crucial role in breakdown of the SFP and causes increases in surface area owing to reduction of particle sizes. Superfine grinding could improve solubility, oil holding capacity, and brightness, but decrease the fluidity of SFP. SFP with smallest particle size exhibited highest saponin, minerals, total phenolic, and flavonoid contents accompanied with the best antioxidant activities. Size reduction beyond M200 and M400 led to increasing tendency in IR signature band patterns and marked differences in peak intensities while the powdered samples showed resemblance with respect to peak shapes. Differential scanning calorimetry indicated the lowest melting temperature for SFP fraction with smallest particle size. Conclusively, superfine SFP due to inherent improvement in properties may render several potential applications in manufacturing of food and pharmaceutical additives to impart improved functionalities of finally finished products with uniformity.
三七花传统上用作材料中的功能性药用成分。本研究旨在评估三七花的超微粉产品，因此在本研究中，通过超微粉碎制备了五种不同粒径的三七花干粉末（SFP），并对各种性质的变化进行了评估。通过研磨制备出了中位粒径为25.57μm的超微粉。环境扫描电子显微镜分析表明，在超微粉碎过程中，机械剪切应力在三七花干粉末的破碎中起关键作用，并且由于粒径减小导致表面积增加。超微粉碎可以提高溶解度、持油能力和亮度，但会降低三七花干粉末的流动性。粒径最小的三七花干粉末表现出最高的皂苷、矿物质、总酚和黄酮含量以及最佳的抗氧化活性。粒径减小超过M200和M400导致红外特征带模式有增加趋势，且峰强度存在明显差异，而粉末样品在峰形方面相似。差示扫描量热法表明粒径最小的三七花干粉末部分的熔点最低。总之，由于性能的固有改善，超微三七花干粉末可能在食品和药物添加剂制造中具有多种潜在应用，以均匀赋予最终成品改善的功能。
