罗静 杨伟 伍娇琪 任青媛 黄毅


摘要[目的] 分析炭角菌科药食真菌纵条纹炭角菌(Xylaria striata Pat.1887)子实体石油醚萃取物的化学成分。[方法] 采用气相色谱-质谱联用技术(GC-MS)对纵条纹炭角菌乙醇提取石油醚萃取物进行测定,使用NIST谱图库自动检索结合人工比对确定其化学成分,并利用峰面积归一法计算各成分相对百分含量。
[结果] 共分离出37个色谱峰,经文献与标准图谱对照分析,鉴定出30个化合物,鉴定成分占流出峰总面积的98.43%。纵条纹炭角菌石油醚萃取物主要包括脂肪酸及其酯类(77.58%),以及甾体类化合物(19.44%)。含量最高的是反式-亚油酸甲酯(38.23%),其次为棕榈酸甲酯(19.12%)、麦角甾醇(17.06%)、9顺,12反-亚油酸甲酯(5.15%)、油酸甲酯(4.43%)以及硬脂酸甲酯(3.3%)等。[结论]研究结果为该食药用真菌在农业和医药等领域的开发利用提供了理论依据。
关键词纵条纹炭角菌;石油醚萃取物;气相色谱-质谱联用;化学成分分析
中图分类号S567.3文献标识码
A文章编号0517-6611(2017)17-0001-03
Abstract[Objective] To analyze the chemical constituents of petroleum fraction from the fruiting body of Xylaria striata.[Method] The petroleum extracts from X.striata were extracted by ethanol and then the petroleum fraction was analyzed by GCMS.After using NIST spectrum database and artificial comparison,the chemical composition was confirmed.And relative percentage of each component was calculated by peak area normalization method.[Result] 37 peaks were separated,and 30 compounds were identified based on NIST spectral library and corresponding literature information,which took 98.43% of total peaks.Most of them were fat acids and their esters (77.58%),steroids (19.44%).The content of methyl linoleate was the highest(38.23%),followed by methyl palmitate(19.12%),9cis,12trans,methyl linoleate (5.15%),methyl oleate (4.43%)and methyl stearate(3.3%).[Conclusion] The research can provide some theoretical basis for the exploration and utilization of X.striata.
Key wordsXylaria striata;Petroleum fraction;GCMS;Chemical constituents
基金项目
国家自然科学基金项目(21272189);西南科技大学大学生创新基金项目(CX16-064)。
作者简介罗静(1996—),女,四川南充人,本科生,专业:制药工程。*通讯作者,讲师,博士,从事真菌天然产物开发研究。
收稿日期2017-04-14
纵条纹炭角菌(Xylaria striata Pat.1887),隶属子囊菌门盘菌亚门粪壳菌纲炭角菌亚纲炭角菌目炭角菌科炭角菌属(Xylaria Hill ex Schrank)。该菌是一种植物内生菌,夏季埋生或表生于阔叶树的腐朽树皮和活树根上,民间将其作为药用菌使用,幼嫩子实体还可直接食用,味道鲜美[1]。现有文献已报道同属其他炭角菌的多种生物学功效[2-5]和分离获得的一系列活性化合物[6-9],表明炭角菌屬具有较高的科研开发价值。……