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首页> 外文期刊>Phytochemical Analysis >Chemical composition of South American Burseraceae non-volatile oleoresins and preliminary solubility assessment of their commercial blend.
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Chemical composition of South American Burseraceae non-volatile oleoresins and preliminary solubility assessment of their commercial blend.

机译：南美金枪鱼科非挥发性油性树脂的化学组成及其商业混合物的初步溶解度评估。

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Introduction - Non-volatile oleoresins from neotropical Burseraceae are traditionally used for craft, technological and medicinal purposes. The crude resin is usually sold in popular markets of the forest communities. Adding value to this rainforest raw material requires establishing its composition. Objective - To analyse the resin composition from different Burseraceae species and establish a minimally reproducible profile by gas chromatography, in order to parameterise its quality control. Methodology - Crude oleoresin samples of 10 Protium and Trattinnickia species and a commercial blend were subjected to hydrodistillation to remove volatile compounds. The chloroform-soluble residues were methylated, analysed by GC-FID (flame ionisation detection), and individual components were identified by analysing their mass fragmentation pattern in GC-MS and comparison with data from the literature. The blend solubility was assayed in 30 non-chlorinated solvents at three different proportions. Results - The resins consisted exclusively of triterpenes, showing a common predominance of four major compounds in all the samples, corresponding to alpha -amyrin, beta -amyrin, alpha -amyrenone and beta -amyrenone. This profile was complemented with minor amounts of the tetracyclic beta -elemolic and alpha -elemolic acids, maniladiol, brein and other oxidised trace compounds. The better solvents for the resin were those chemically bearing more than four carbon atoms, as n-butyl acetate, 2-ethoxyethanol and isopropanol. The crude resin blend sold contained around 10% of insoluble material that was constituted by up to 70% inorganic residues mixed with humic acid derivatives, as attested by ash analysis and IR spectroscopy, respectively. Conclusion - The experimental results, complemented by a general inspection of the literature, demonstrated a systematically reproducible triterpene profile in Protium and Trattinnickia species.
机译：简介-新热带金鸡科的非挥发性油脂树脂传统上用于手工艺，技术和医药用途。粗树脂通常在森林社区的受欢迎市场上出售。要增加这种雨林原材料的价值，就必须确定其成分。目的-分析不同马齿Bur科植物的树脂成分，并通过气相色谱法建立最低限度可重现的图谱，以对其质量控制进行参数化。方法-对10种Pro和Trattinnickia物种的粗制油树脂样品和市售混合物进行加氢蒸馏以除去挥发性化合物。将可溶于氯仿的残基甲基化，通过GC-FID（火焰离子化检测）进行分析，并通过在GC-MS中分析其质量碎片化模式并与文献数据进行比较来鉴定各个组分。共混物的溶解度在30种非氯化溶剂中以三种不同的比例进行测定。结果-该树脂仅由三萜烯组成，在所有样品中显示出四种主要化合物的共同优势，分别对应于α-锚蛋白，β-锚蛋白，α-戊烯酮和β-戊烯酮。此轮廓还辅以少量的四环β-电动酸和α-电动酸，马尼拉二醇，布雷宁和其他氧化的痕量化合物。对于树脂而言，较好的溶剂是化学上带有四个以上碳原子的那些溶剂，例如乙酸正丁酯，2-乙氧基乙醇和异丙醇。分别通过灰分分析和红外光谱法证明，出售的粗制树脂共混物包含约10％的不溶物，其中不溶物由最多70％的腐殖酸衍生物与无机残渣混合而成。结论-实验结果，再加上对文献的一般检查，证明了Pro和Trattinnickia物种中三萜的系统可再现性。

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