摘要
为探究不同附生树种栽培对铁皮石斛营养成分及硒含量的影响,以安龙县青冈、板栗、枫香、木荷、杨梅、合欢、冬瓜和核桃8个树种附生铁皮石斛及相应树皮为研究对象,测定铁皮石斛中4种营养成分及硒元素、树皮中11种矿物质元素含量,并进行相关性分析。采用SPSS软件对铁皮石斛药材中4种营养成分及硒元素进行主成分分析,以反映不同附生树种铁皮石斛药材品质的差异性。结果表明,树皮不同矿质元素对铁皮石斛营养成分影响差异较大,8个树种附生铁皮石斛硒元素含量为20.3~49.7μg/kg,浸出物含量为7.2%~11.5%,多糖含量为23.7%~36.8%,总黄酮含量为23.6~49.9 mg/g,游离氨基酸含量为0.3~6.8 mg/g。主成分分析结果显示,对铁皮石斛药材品质影响较大的3个主要成分分别为硒元素、多糖和氨基酸。综合评分显示,8个铁皮石斛药材品质优劣顺序(按附生树种排)为木荷、板栗、合欢、枫香、杨梅、核桃、冬瓜、青冈。研究结果可为铁皮石斛的品质评价及其附生树种选择提供科学依据。
To explore the impact of different epiphytic tree species on the nutritional composition of Dendrobium officinale,this study focused on epiphytic D.officinale from eight tree species(i.e.Quercus glauca,Castanea spp.,Liquidambar formosana,Schima superba,Myrica rubra,Albizia julibrissin,Benincasa hispida,and Juglans regia)as well as their corresponding barks from Anlong.In addition,four essential nutrients and selenium content in D.officinale,as well as eleven mineral elements in the barks,were measured and subjected to correlation analysis.Through the SPSS software,principal component analysis(PCA)was performed on the four nutrients and selenium elements in D.officinale medicinal materials to reflect the differences in the quality of D.officinale medicinal materials cultivated in different epiphytic tree species.As shown by the results,there were significant variations in the influence of different mineral elements in the barks on the nutritional composition of D.officinale.The contents of Se was 20.3-49.7μg/kg,extract was 7.2%-11.5%,polysaccharide was 23.7%-36.8%,total flavonoid was 23.6-49.9 mg/g,free amino acid was 0.3-6.8 mg/g,respectively in 8 species of epiphytic D.officinale.The results of principal component analysis showed that the three main components which had great influence on the quality of D.officinale were Se,polysaccharide and free amino acid.The comprehensive scores from PCA indicated the quality ranking of the eight D.officinale medicinal materials as follows:Schima superba,Castanea spp.,Albizia julibrissin,Liquidambar formosana,Myrica rubra,Juglans regia,Benincasa hispida,and Quercus glauca.Overall,the results of this study can provide scientific basis for the quality evaluation of D.officinale and the selection of its epiphytic tree species.
作者
周美
魏福晓
廖秀
胡恩明
罗鸣
钱薇竹
骆衡
潘卫东
王道平
ZHOU Mei;WEI Fuxiao;LIAO Xiu;HU Enming;LUO Ming;QIAN Weizhu;LUO Heng;PAN Weidong;WANG Daoping(Natural Products Research Center of Guizhou Province(Guizhou Medical University),Guiyang Guizhou 550014,China;State Key Laboratory of Functions and Applications of Medicinal Plants(Guizhou Medical Vniversity),Guizhou Medical University,Guiyang Guizhou 550014,China;Guizhou Institute of Crop Germplasm Resources,Guizhou Academy of Agricultural Sciences,Guiyang Guizhou 550025,China;Anlong Herbal Biotechnology Co.,Ltd of Guizhou,Anlong Guizhou 552400,China)
出处
《广西师范大学学报（自然科学版）》
CAS
北大核心
2024年第5期174-183,共10页
Journal of Guangxi Normal University:Natural Science Edition
基金
贵州省科技支撑计划项目(黔科合支撑〔2020〕4Y067,黔科合支撑〔2020〕4Y068,黔科合成果〔2022〕一般071,黔科合支撑〔2023〕一般363)。
关键词
铁皮石斛
附生植物
营养成分
硒
矿物元素
Dendrobium officinale
epiphytic plant
nutritional components
selenium
mineral elements
