Although a vast number of Aloe species are known, only the Aloe vera and Aloe arborescens species are currently used by cosmetic and pharmaceutical industries. Therefore, the current study aims to complete the existent literature data with new information on the phytochemical composition of some lesser-known Aloe species, with the main focus on carotenoids and fatty acids. Among the analyzed species, Aloe aculeata and Aloe ferox had the highest content in carotenoids, the major pigments being lutein and β-carotene (according to HPLC analysis). The fatty acid profile of each Aloe species was analysed by GC–MS. Linolenic and linoleic acids were the major polyunsaturated fatty acids found in higher percent in Aloe ferox, Aloe spectabilis and Aloe marlothii. Instead, Aloe aculeata proved to have a distinct fatty acid profile, rich in monounsaturated fatty acids. Species such as Aloe arborescens and Aloe marlothii proved to have the highest antioxidant potential according to data of DPPH, ORAC, HPS assays, even if the richest one in vitamin C was found to be Aloe spectabilis. Though the scientific research is mainly focused on the common species Aloe barbadensis, the current data suggests that other Aloe species could receive more attention from industry part, being great sources of bioactive compounds.

中文翻译：

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不同芦荟叶片中某些生物活性化合物的比较分析

尽管已知许多芦荟物种，但是化妆品和制药工业目前仅使用芦荟和木本芦荟物种。因此，本研究旨在利用一些鲜为人知的芦荟物种的植物化学组成方面的新信息来完善现有文献资料，主要集中在类胡萝卜素和脂肪酸上。在所分析的物种中，芦荟和库拉索芦荟中的类胡萝卜素含量最高，主要色素为叶黄素和β-胡萝卜素（根据HPLC分析）。通过GC-MS分析了每种芦荟的脂肪酸谱。亚麻酸和亚油酸是芦荟中的主要多不饱和脂肪酸，在较高的比例中存在于ferox，oxa spectabilis和aloe marlothii中。相反，事实证明，芦荟具有独特的脂肪酸谱，富含单不饱和脂肪酸。根据DPPH，ORAC，HPS分析数据，即使发现维生素C中最丰富的一种是壮观的芦荟，也证明了诸如芦荟和马洛芦荟等物种具有最高的抗氧化潜力。尽管科学研究主要集中在常见的巴巴芦荟物种上，但目前的数据表明，其他芦荟物种可能会受到工业界的更多关注，因为它们是生物活性化合物的重要来源。