摘要
元宝枫为我国特有木本油料树种,选育高含油优质种源是其产业发展急需解决问题。采用野外单株采样和室内分析相结合的方法,测定了科尔沁沙地代钦塔拉自然保护区元宝枫不同年龄古树种仁脂肪酸及其组成的含量。结果表明,元宝枫古树种仁具有高含油特点,且不同树龄古树种仁脂肪酸及其组成含量差异不显著。元宝枫古树种仁油脂质量分数为46.76%~49.97%,平均质量分数48.19%;元宝枫古树种仁脂肪酸组成以油酸、亚油酸为主,平均质量分数分别为26.23%、34.91%;棕榈酸、顺-11-二十碳烯酸、13-二十二碳酸和二十四碳烯酸平均质量分数分别为4.44%、8.18%、14.54%和4.60%。脂肪酸随着古树年龄增加,脂肪酸含量总体呈现出增加趋势,神经酸含量总体呈现出降低的趋势。代钦塔拉自然保护区百年以上元宝枫古树具有相对稳定的高含油特征,树龄差异不是影响元宝枫种仁脂肪酸及其各组成含量的主要因素。
Purpleblow maple(Acer truncatum Bunge)is a unique woody oil tree species in China,therefore,breeding provenances of high fatty acids is an urgent problem for development of the industry.In this paper,The contents of fatty acids and their compositions in purpleblow maple seeds of different ages in Deqintala Nature Reserve in Horqin sandy land were determined by combining field sampling and indoor analysis.The results indicated that the seed kernel of purpleblow maple had the characteristics of high oil content.There was no significant difference of fatty acids and their composition in ancient trees kernel at different ages.Seed kernel contains oil mass fraction of purpleblow maple ancient trees were 46.76%-49.97%,and the average content oil mass fraction was 48.19%.Oleic acid and linoleic acid were the main fatty acids in seed kernel of purpleblow maple,average content oil mass fraction was 26.23%and 34.91%,respectively.The average content mass fraction of the palmitic acid,cil-11-eicosenoic acid,13-docobicarbonate and tetracosenoic acid were 4.44%,8.18%,14.54%and 4.60%,respectively.Fatty acid content showed an increasing trend with the increase of age of ancient trees.The content of nervonic acid showed a decreasing trend with the increase of age of ancient trees.The old purpleblow maple trees more than 100 years had relatively stable characteristics of high oil content.The difference of tree age was not the main factor affecting the contents of fatty acids and their components in purpleblow maple kernel.
作者
闫婷
鲁敏
孟显悦
乌日恒
师鹏飞
海龙
杨宏伟
Yan Ting;Lu Min;Meng Xianyue;Wu Riheng;Shi Pengfei;Hai Long;Yang Hongwei(Inner Mongolia Academy of Forestry Sciences,Key Laboratory of Conservation and Cultivation of Desert Biological Resources of State Forestry Administration,Huhehaote 010010)
出处
《中国粮油学报》
CAS
CSCD
北大核心
2024年第6期146-150,共5页
Journal of the Chinese Cereals and Oils Association
基金
内蒙古自治区科技计划项目(2022YFDZ0054)。
关键词
科尔沁沙地
元宝枫
古树
脂肪酸
神经酸
Horqin sandy land
purpleblow maple
ancient trees
fatty acids
nervonic acid
