基于液相色谱-质谱代谢组学方法辨别两种泰国籼稻冷榨米糠油(英文)

来源 :色谱 | 被引量 : 0次 | 上传用户:greenlandfun
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
A newly developed liquid chromatography-mass spectrometry(LC-MS)method for the analysis of cold pressed rice bran oil(RBO)was established and used to discriminate between RBOs produced from two different cultivars of major Thai fragrant rice species.The cold pressed RBO was prepared using the screw compression method.The LC-MS data were preprocessed with MZmine 2.10 program before evaluating with principal component analysis using SIMCA 13 software.The LC-MS method was able to detect and quantify several kinds of valuable constituents such as fatty acids,vitamin E,andγ-oryzanol.The chromatographic condition was feasible;short time for analysis and simple method were achieved.From score plot and loading plot of principle component analysis(PCA),two rice cultivar samples were clearly separated,and it was revealed that Khao-Hom-Pathum was more suitable than Khao-Hom-Mali for cold pressed RBO production since it contained high totalγ-oryzanol and less saturated free fatty acids.As with the fixed price of all the rice brans,this information can be used in order to,if possible,preserve the price of rice brans from different cultivars. A newly developed liquid chromatography-mass spectrometry (LC-MS) method for the analysis of cold pressed rice bran oil (RBO) was established and used to discriminate between RBOs produced from two different cultivars of major Thai fragrant rice species. was prepared using the screw compression method. LC-MS data were preprocessed with MZmine 2.10 program before evaluating with principal component analysis using SIMCA 13 software. LC-MS method was able to detect and quantify several kinds of valuable constituents such as fatty acids , vitamin E, and γ-oryzanol. The chromatographic condition was feasible; short time for analysis and simple method were achieved. Fc score plot and loading plot of principle component analysis (PCA), two rice cultivar samples were clearly separated, and it was revealed that Khao-Hom-Pathum was more suitable than Khao-Hom-Mali for cold pressed RBO production since it contained high total γ-oryzanol and less saturated free fatty acids. As with t he fixed price of all the rice brans, this information can be used in order to, if possible, preserve the price of rice brans from different cultivars.
其他文献
日前,农业部在山东省东营市召开全国蝗虫绿色防控现场会议,在展示我国蝗虫应急防控能力和绿色防控技术,交流部分省区今年蝗虫发生与防治工作进展和绿色防控工作经验后,会议要
结构性财政危机使晚清政府处于严重收不敷支的不平衡状态,而各衙门则各显神通以求满足自身的需要。本文以三成船钞作为考察对象,以求揭示晚清财政开支的另一面相。同文馆倚靠
著名旅美华裔科学家何大一近日在出席一项研讨会时透露,他从事的最新动物试验显示,人体免疫系统T细胞中的CD8可以有效对抗艾滋病病毒。据报道,以往医学界都是靠测定T细胞中的CD4来了解艾
患儿女,9个月。因出生后进行性腹部肿大9个月、加重半个月于2006年6月入院。体格检查:体重12kg,精神好,发育正常,营养良好。全腹膨隆,腹壁静脉显露,全腹叩诊呈浊音,肠鸣音正
宋代瓷器生产有官窑与民窑之分。宫廷所需瓷器由官办瓷窑生产,简称为官窑。宋官窑创烧于北宋徽宗时期,南渡后,“袭故京遗制”重建官窑。据文献记载北宋官窑有汝窑、钧窑;南
[Objective] The paper was to explore the herbicidal effects of Periconia heveae culture filtrate on Mikania micrantha. [Method] Through indoor bioassay method,
Metaflumizone is a novel sodium channel blocker insecticide, which has been registered for controling the diamondback moth (DBM), Plutella xylostella (Lepidopte
发展了首例烯丙型醇与取代肼的对映专一性烯丙型烷基化反应.在钯/外消旋2,2’-双(二苯膦基)-1,1’-联萘(BINAP)/硼酸的催化下,一系列高度对映富集的烯丙型醇与取代肼于室温进
随着我国经济的发展,公民之间的收入差距在拉大,个人所得税作为我国调整贫富差距的重要手段,却没有发挥其应有的调控作用,究其原因,个人所得税法律制度规定中存在很多不足之
我科自1995-03以来,采用动态血压监测(ABPM)方法,对50例健康老年人进行了不同活动量的进餐前、后血压波动情况的观察分析,现报道如下:1 对象与方法1.1 对象 选择50例住院疗养的健康老年人为观察对象