Department of Microbiology and Immunology, Faculty of Animal Science and Biotechnologies, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca 400372, Romania.
Department of Chemistry and Biochemistry, Faculty of Animal Science and Biotechnologies, University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca 400372, Romania.
Molecules. 2020 Mar 5;25(5):1170. doi: 10.3390/molecules25051170.
L. is an important source of natural antioxidant and antimicrobial agents. Phytochemical compounds, antioxidant and antibacterial properties of berries, and leaf extracts from four Romanian sea buckthorn cultivars were investigated. Large differences in the content of total polyphenols and flavonoids between the varieties were observed. HPLC analysis of the polyphenolic compounds showed greater differences in content in leaves than in berries. This study confirmed that sea buckthorn leaves and berries are a rich source of phenolic compounds, especially quercetin derivatives and hydrocinnamic acid derivatives. Five carotenoid compounds were identified in the berries: lutein, zeaxanthin, β-cryptoxanthin, -β-carotene, and β-carotene. From the results obtained in this study, it can be stated that the varieties whose berries yielded the highest quantities of polyphenols, flavonoids, and antioxidant activity, can be ranked as follows: SF6 > Golden Abundant > Carmen > Colosal, and for leaf extracts the ranked order is SF6 > Golden Abundant > Colosal > Carmen. A strong correlation between the total flavonoid yield and antioxidant activity ( = 0.96), was observed. All extracts showed antibacterial activity against , , and , however extracts from berries were less potent than extracts from leaves.
L. 是天然抗氧化剂和抗菌剂的重要来源。本研究对四种罗马尼亚沙棘品种的浆果和叶提取物中的植物化学化合物、抗氧化和抗菌特性进行了研究。观察到不同品种间总多酚和类黄酮含量存在较大差异。多酚化合物的 HPLC 分析显示，叶片中的含量差异大于浆果。本研究证实，沙棘叶和浆果是酚类化合物的丰富来源，尤其是槲皮素衍生物和肉桂酸衍生物。在浆果中鉴定出五种类胡萝卜素化合物：叶黄素、玉米黄质、β-隐黄质、β-胡萝卜素和β-胡萝卜素。根据本研究的结果，可以得出结论，以下品种的浆果多酚、类黄酮和抗氧化活性含量最高：SF6＞Golden Abundant＞Carmen＞Colosal，而对于叶提取物，排名顺序为 SF6＞Golden Abundant＞Colosal＞Carmen。观察到总类黄酮产量和抗氧化活性之间存在很强的相关性（ = 0.96）。所有提取物均对 、 、 和 具有抗菌活性，然而，浆果提取物的活性不如叶片提取物。
