珍稀琴叶风吹楠种子主要脂肪酸成分变化规律研究  

Variation Tendency for Percentages of Main Fatty Acids from Horsfieldia pandurifolia Seed

作　　者：毛常丽[1] 张凤良[1] 杨晓玲[1] 许玉兰[2] 段安安[2] 吴裕[1] 张辉[1,2] 

机构地区：[1]云南省热带作物科学研究所,云南景洪666100 [2]西南林业大学林学院,昆明650224

出　　处：《西南大学学报（自然科学版）》2017年第1期76-82,共7页Journal of Southwest University(Natural Science Edition)

基　　金：国家自然科学基金项目(31560214;30872046);云南省热带作物科技创新体系建设专项资金项目(RF2014-18)

摘　　要：为探明琴叶风吹楠种子油中各脂肪酸百分比的变化规律,对澜沧江流域5个县40株大树采集种子,测定脂肪酸成分及百分比,结果表明共53份种子样本都含有17种脂肪酸.针对4株树,不成熟种子十四碳烯酸的百分比为22.12%~28.61%,十四烷酸为62.31%~67.27%,总十四碳酸为85.40%~89.99%,种子完全成熟后分别为18.63%~21.93%,68.57%~71.38%和88.87%~90.24%;5株树十四碳酸总百分比年际差异在1.49%~4.26%之间;不同地点39株树的成熟种子十四碳酸总百分比为88.14%~92.82%之间,平均值为90.60%.琴叶风吹楠成熟种子十四碳酸相对百分比群体变异和年际差异极小,在种子成熟过程中,十四碳烯酸不断转化成十四烷酸,但是在单株间和同株年际间的转化程度不一致.总十四碳酸百分比占绝对优势,且具良好稳定性,可以作为琴叶风吹楠化学分类学的重要依据.In order to understand the variation tendency of fatty acids from the seeds of Horsfieldia pandurifolia,a rare plant species in China,53 sample seeds from 40 individuals in the Lancang River Valley were collected.The components and percentage of fatty acids of all sample seeds were tested.The results showed that all the 53 sample seeds contained 17 kinds of fatty acid.The percentage variations of myristoleic acid,myristic acid and total C14 fatty acids were,respectively,in the range of 22.12%-28.61%,62.31%-67.27% and 85.40%-89.99% in unripe seeds,and in the range of 18.63%-21.93%,68.57%-71.38% and 88.87%-90.24% in fully ripe seeds from 4appointed individuals.Variable quantities of total C14 fatty acid percentages were 1.49%-4.26% in different years from 5 appointed individuals.The percentage variations of total C14 fatty acids were in the range of 88.14%-92.82% from the sample seeds of 39 individuals,the average being 90.60%.Population variation and interannual variation of total C14 fatty acids in the ripe seeds were very small.During the course of seed maturation,myristoleic acid was steadily translating into myristic acid,but the conversion degrees were inconsistent among individuals and different years.Total C14 fatty acids were shown to be predominant in seed fatty acids of H.pandurifolia and showed good stability and,therefore,this component is recommended as an important indicator of plant chemotaxonomy for the species.

关 键 词：琴叶风吹楠 种子 脂肪酸 变化规律 

分 类 号：Q949.93[生物学—植物学]