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首页> 外文期刊>RSC Advances >A targeted metabolomics approach to characterize acetogenin profiles in avocado fruit (Persea americana Mill.)
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A targeted metabolomics approach to characterize acetogenin profiles in avocado fruit (Persea americana Mill.)

机译：一种有针对性的代谢组合方法，以表征牛油果果蔬（Persea Americana Mill）的丙酮糖素谱。

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摘要

Lauraceous acetogenins are fatty acid derivatives with an odd-carbon aliphatic chain found in avocado (Persea americana Mill.). These compounds display a wide range of bioactivities that makes them candidates for use as antimicrobial and proapoptotic agents in the food industry and against cancer cells respectively. Existing knowledge about its metabolism in planta is scarce. This work quantifies eight different acetogenins accumulated in fruit tissues (peel, seed, and pulp) from 22 avocado cultivars to sample the existing variation using a targeted metabolomics approach. Multivariate analyses uncovered correlations among acetogenins present in fruit tissues and their chemical backbone that allowed a proposal for classifying them in three families (Avocatins, Pahuatins and Persenins). The seed acetogenin profile differed from that of the pulp and peel, which while different in concentration (peel accumulated low acetogenin amounts), had the same profile. Acetogenins from samples of known origin were also separated by variety using descriptive Linear Discriminant Analysis (LDA), and a chemotaxonomic model was generated via predictive LDA and was tested on samples from unknown origin. This work effectively sampled acetogenin contents and profile variability in seed (1.09-8.33 mg per g FW), peel (0.22-12.5 mg per g FW), and pulp (0.49-9.58 mg per g FW) from avocado fruit, as well as provides a putative classification to seven avocado cultivars. Results from this work show that the eight acetogenins followed are produced in all 22 avocado cultivars, which points to conserved metabolism among avocado plants.
机译：Lauraceous acetogenins是脂肪酸衍生物，鳄梨（Persea Americana Mill）中发现的奇数碳脂族链。这些化合物显示出广泛的生物活像性，使其成为食品工业中的抗菌药物和癌细胞中的抗菌药物和癌细胞的候选物。关于在Planta中新陈代谢的现有知识是稀缺的。这项工作量化了八种不同的醋酸纤维素，累积在水果组织（剥皮，种子和纸浆）中，从22种鳄梨栽培品种中使用目标代谢组种方法来对现有的变化进行采样。多变量分析果组织中存在的丙酮蛋白的相关性及其化学骨干，允许提案在三个家庭（禽类，巴瓦林和持粒）中对它们进行分类。种子丙酮素曲线与纸浆和剥离的种子分布不同，而浓度不同（剥离累积的低丙酮素量），具有相同的概况。来自已知起源样品的丙酮蛋白也通过使用描述性线性判别分析（LDA）分离，并且通过预测LDA产生趋化学模型，并在从未知来源的样品上进行测试。这项工作有效地采样了种子（每G / G FW的1.09-8.33mg），剥离（每G FW 0.22-12.5mg），以及来自牛油果水果的纸浆（0.49-9.58mg）的丙酮糖素含量和轮廓变异性，以及为七种鳄梨栽培品种提供规定的分类。本作作品的结果表明，八种丙酮蛋白素在所有22种鳄梨栽培品种中产生，这些品种在鳄梨植物中寻求保守的代谢。

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