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Particle size of ginseng (Panax ginseng Meyer) insoluble dietary fiber and its effect on physicochemical properties and antioxidant activities
Applied Biological Chemistry ( IF 3.2 ) Pub Date : 2020-11-04 , DOI: 10.1186/s13765-020-00558-2
Guihun Jiang , Zhaogen Wu , Kashif Ameer , Shanji Li , Karna Ramachandraiah

Dietary fibers (DFs) and associated phytochemicals in ginseng species are known to provide various functional and health benefits. The incorporation of ginseng insoluble dietary fiber (IDF) in food products often result in undesirable physicochemical properties. Thus, to overcome such demerits, micronization of IDF has been considered. This study investigated the effect of particle size on the physicochemical properties, antioxidant activities, structure and thermal analysis of ginseng IDF. Micronized IDF powder with median particle diameter of 15.83 μm was produced through fine grinding. Reduction of ginseng IDF resulted in increased brightness, water holding capacity and solubility. Decreasing particle sizes also lowered bulk, tapped density, Carr index and Hausner ratio. Reduction of particle size caused greater extractability of mineral and phenolic content and thereby increasing the DPPH radical scavenging activity and ferric reducing antioxidant power. Increased polyphenol extraction with smaller particle size also lowered the mice erythrocytes hemolysis percentage while the hemolysis inhibition rate was increased. Particle size also influenced the thermal stability of ginseng IDF powders. FTIR spectra revealed lack of impact on the major phenolic structures due to superfine grinding. Hence,micronized ginseng IDF powders with improved physicochemical properties and antioxidant activities possess the potential to be used in food and pharmaceutical industries.

中文翻译:

人参不溶性膳食纤维的粒径及其对理化性质和抗氧化活性的影响

已知人参中的膳食纤维(DFs)和相关的植物化学物质可提供各种功能和健康益处。人参不溶性膳食纤维(IDF)在食品中的掺入常常导致不良的理化特性。因此,为了克服这些缺点,已经考虑了IDF的微粉化。本研究调查了粒径对人参IDF的理化性质,抗氧化活性,结构和热分析的影响。通过精细研磨制备中值粒径为15.83μm的微粉化IDF粉末。人参IDF的减少导致亮度,保水能力和溶解度增加。减小粒度还降低了体积,堆积密度,卡尔指数和豪斯纳比。粒径的减小导致矿物质和酚含量的可萃取性提高,从而增加了DPPH自由基清除活性并降低了三氧化二铁的抗氧化能力。增加的多酚提取物的粒径越小,小鼠的红细胞溶血百分比也越低,而溶血抑制率则越高。粒度还影响人参IDF粉末的热稳定性。FTIR光谱表明,由于进行超细研磨,对主要酚类结构没有影响。因此,具有改善的理化性质和抗氧化活性的人参IDF微粉具有在食品和制药工业中使用的潜力。增加的多酚提取物的粒径越小,小鼠的红细胞溶血百分比也越低,而溶血抑制率则越高。粒度还影响人参IDF粉末的热稳定性。FTIR光谱表明,由于进行超细研磨,对主要酚类结构没有影响。因此,具有改善的理化性质和抗氧化活性的人参IDF微粉具有在食品和制药工业中使用的潜力。增加的多酚提取物的粒径越小,小鼠的红细胞溶血百分比也越低,而溶血抑制率则越高。粒度还影响人参IDF粉末的热稳定性。FTIR光谱表明,由于进行超细研磨,对主要酚类结构没有影响。因此,具有改善的理化性质和抗氧化活性的人参IDF微粉具有在食品和制药工业中使用的潜力。
更新日期:2020-11-04
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