摘要
本文综合对比了同产区同生长周期湖北贝母与浙贝母的总酚、总黄酮、游离氨基酸、微量元素、核苷与核碱基等成分组成及其抗氧化性能、溶解度、溶胀度和糊化特性等理化性质。与湖北贝母相比,浙贝母成熟鳞茎具有较优的抗氧化活性及较高的总酚、总黄酮、DPPH值、FRAP值和ABTS值。另一方面,湖北贝母成熟鳞茎中的核苷、核碱基以及氨基酸总含量显著高于浙贝母(P<0.05),并且湖北贝母成熟鳞茎对人体必需微量元素的累积能力显著优于浙贝母(P<0.05)。DSC数据显示浙贝母鳞茎粉末具有较低的T_(0)、T_(p)、T_(c)值和较高相变焓值ΔH,结合其高直链淀粉含量,推测浙贝母成熟鳞茎淀粉分子双螺旋结构比湖北贝母更加紧密有序。总之,湖北贝母与浙贝母成熟鳞茎的成分含量和理化性质之间存在较大差异,本研究可为贝母在功能食品中的加工应用提供参考。
In this paper,the samples of Fritillaria hupehensis and Fritillaria thunbergii were collected from the same area with identical growth cycle,and their compositions of TPC(total phenolics content),TFC(total flavonoids content),free amino acids,trace elements,nucleosides and nucleobases were comprehensively compared.Besides that,their corresponding physicochemical properties of antioxidant ability,solubility,swelling and gelatinization characteristic were also discussed.Compared with Fritillaria hupehensis,the Fritillaria thunbergii showed higher antioxidant activities in mature bulb due to its higher TPC,TFC,DPPH,FRAP and ABTS values.On the other hand,the contents of total nucleosides,nucleobases,amino acids in bulb of Fritillaria hupehensis were significantly higher than those of Fritillaria thunbergii(P<0.05),and larger amounts of essential trace elements were also accumulated in Fritillaria hupehensis(P<0.05).DSC data showed that the powder of Fritillaria thunbergii bulb had lower T_(0),T_(p)and T_(c)values and higher phase enthalpy valueΔH.Besides that,the higher amylose content was also found in Fritillaria thunbergii bulb.It can be concluded that the helix structure of starch molecular in Fritillaria thunbergii bulb might be more compact and ordered than that of Fritillaria hupehensis.In conclusion,the compositions and physicochemical properties were significant different between the mature bulbs of Fritillaria hupehensis and Fritillaria thunbergii.This study can provide a valuable reference for the processing and application of Fritillary as functional foods.
作者
卢琪
薛淑静
杨德
李露
LU Qi;XUE Shujing;YANG De;LI Lu(Institute of Agro-Products Processing and Nuclear-Agricultural Technology,Hubei Academy of Agricultural Science,Wuhan 430064,China)
出处
《食品工业科技》
CAS
北大核心
2023年第3期49-55,共7页
Science and Technology of Food Industry
基金
道地药材安全高效生产关键技术研究与示范(2020-620-000-002-03)
湖北省农业科技创新中心2020年重大科技研发项目。
关键词
湖北贝母
浙贝母
成分含量
理化性质
对比分析
Fritillaria hupehensis
Fritillaria thunbergii
ingredient composition
physicochemical properties
comparison
