da Silva Braian Saimon Frota, Ferreira Nelson Rosa, Gil Fábio Dos Santos, Pereira Simone de Fátima Pinheiro, Maciel Alana Coêlho, Alves Claúdio Nahum
Graduate Programs in Chemistry (PPGQ), Federal University of Pará (UFPA), Belém 66075-110, Pará, Brazil.
Graduate Program in Food Science and Technology (PPGCTA), Institute of Technology (ITEC), Federal University of Pará (UFPA), Belém 66075-110, Pará, Brazil.
Foods. 2025 Apr 30;14(9):1585. doi: 10.3390/foods14091585.
L.f. oil has high added value due to its antioxidant activity. This study evaluated the quality of 50 samples from eight regions of Pará, using analytical and chemometric methods. Total carotenoids, polyphenols, flavonoids, vitamin C, acidity, peroxide, saponification, and fatty acid indices were analyzed. Samples with higher residual load were identified by the Mahalanobis distance. Principal component analysis (PCA) highlighted total carotenoids as the most relevant parameter, identifying three groups with different levels of biological activity (low, medium, and high) and significant cumulative variance. ANOVA did not indicate significant differences between groups regarding fatty acids, but oleic acid was predominant in five regions. Nine samples are suitable for the food sector, while the others can be directed to different applications. The maximum concentrations of carotenoids, polyphenols, flavonoids, and vitamin C were 1899 μg/g, 161.69 GAE/100 g, 125.02 mg EC/100 g, and 24.17 mg/100 g, respectively. This study demonstrated the usefulness of chemometric tools in the quality control of this bioinput, facing the local bioeconomy.
罗勒叶油因其抗氧化活性而具有较高的附加值。本研究采用分析和化学计量学方法对来自帕拉州八个地区的50个样品的质量进行了评估。分析了总类胡萝卜素、多酚、黄酮类化合物、维生素C、酸度、过氧化物、皂化值和脂肪酸指数。通过马氏距离确定了残留量较高的样品。主成分分析（PCA）突出了总类胡萝卜素是最相关的参数，确定了具有不同生物活性水平（低、中、高）和显著累积方差的三组。方差分析未表明各组在脂肪酸方面存在显著差异，但油酸在五个地区占主导地位。九个样品适用于食品行业，而其他样品可用于不同的应用。类胡萝卜素、多酚、黄酮类化合物和维生素C的最大浓度分别为1899μg/g、161.69 GAE/100 g、125.02 mg EC/100 g和24.17 mg/100 g。本研究证明了化学计量工具在面对当地生物经济时对这种生物投入品质量控制的有用性。
