摘要
目的:优选铁皮石斛鲜品的性状评价指标,揭示其性状与成分之间的关联性,并对其进行综合评价。方法:测定不同批次铁皮石斛鲜品的外观性状指标(中部节间长、色度值等)及内在品质指标(粗纤维、多糖等),并通过Excel和SPSS 21.0软件进行数据统计与分析。结果:中部茎粗、中部节间长可作为优选铁皮石斛鲜品的性状指标;铁皮石斛鲜品糖类成分中多糖和半乳糖醛酸、葡萄糖和半乳糖醛酸及半乳糖、甘露糖和半乳糖醛酸、半乳糖和阿拉伯糖之间存在显著性差异(P<0.05或P<0.01)。根据主成分分析-聚类分析可将12批铁皮石斛鲜品分为3类,第1类品质较优,包括修水、余干大棚,龙虎山、修水挂树附生及修水崖壁仿野生种植的铁皮石斛;第2类品质居中,包括龙虎山、余江、鄱阳大棚和广丰、横峰崖壁仿野生种植的铁皮石斛;第3类品质相对较差,包括德安大棚和德兴挂树附生种植的铁皮石斛。结论:通过主成分分析-聚类分析建立多指标、多成分铁皮石斛鲜品品质评价体系,有助于建立铁皮石斛鲜品品质评价标准和规格等级划分。
Objective:To optimize the trait evaluation indicators of fresh Tiepishihu(Dendrobii Caulis),to the correlation between its traits and components,and to comprehensively evaluate them.Methods:The appearance trait indicators(middle internode length,color value,etc.)and their intrinsic quality indicators(crude fiber,polysaccharides,etc.)were determined for different batches of fresh Tiepishihu and the data were statistically analyzed by Excel and SPSS 21.0 software.Results:The middle stem diameter and the middle internode length could be used as the trait indicators for optimizing fresh Tiepishihu.There were significant differences between polysaccharide and galacturonic acid,glucose,galacturonic acid and galactose,mannose and galacturonic acid,galactose and arabinose in saccharides components of fresh Tiepishihu(P<0.05 or P<0.01).According to the principal component analysis and cluster analysis,12 batches of fresh Tiepishihu could be divided into 3 categories:the first category with superior quality,including fresh Tiepishihu from Xiushui,Yugan greenhouses,Longhu Mountain,Xiushui tree-attached cultivation and Xiushui cliff imitating wild cultivation;the second category with intermediate quality,including fresh Tiepishihu from Longhu Mountain,Yujiang,Poyang greenhouses,and Guangfeng and Hengfeng cliff imitating wild cultivation;the third category with relatively poor quality,including fresh Tiepishihu from De’an greenhouses and Dexing tree-attached cultivation.Conclusion:The quality evaluation system of fresh Tiepishihu with multi-indicator and multi-component was established based on principal component analysis and cluster analysis,which was helpful to establish the fresh quality evaluation standard and specification classification of fresh Tiepishihu.
作者
郑亚倩
曾慧婷
余炅
王小青
李晶
陈超
何小群
虞金宝
ZHENG Yaqian;ZENG Huiting;YU Jiong;WANG Xiaoqing;LI Jing;CHEN Chao;HE Xiaoqun;YUJinbao(Jiangxi University of Chinese Medicine,Nanchang 330004,China;Jiangxi Provincial Institute of Traditional Chinese Medicine,Nanchang 330006,China)
出处
《山东中医药大学学报》
2024年第4期467-477,共11页
Journal of Shandong University of Traditional Chinese Medicine
基金
江西省重大科技研发专项(编号:20203ABC28W019)
江西省中医药标准化研究项目(编号:2021A18)
国家中药材产业技术体系建设专项(编号:CARS-21)。
关键词
铁皮石斛鲜品
性状
糖类成分
品质评价
相关性分析
主成分分析
聚类分析
fresh Tiepishihu(Dendrobii Caulis)
trait
saccharides components
quality evaluation
correlation analysis
principal component analysis
cluster analysis
