Screening of Phytochemical, Antimicrobial and Antioxidant Activities in Extracts of Some Fruits and Vegetables Consumed in Turkey

Celal Bayar Universitesi Fen Bilimleri Dergisi Pub Date : 2018-03-30 DOI:10.18466/CBAYARFBE.363384

Aliye Gediz Erturk, Ö. Ertürk, M. C. Ayvaz, E. Ertürk

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引用次数: 9

Abstract

Antioxidant and antimicrobial activities of ethanol extracts of leaves, seeds and roots of 48 fruits and vegetables belonging to different families were investigated. Also, the phytochemical constituents were established in samples. Antimicrobial activity tests were carried out using agar disc diffusion methods with ten microbial species and only two fungi strains. The extracts showed high antibacterial activity against all the strains tested. It was observed that the plant extracts were more active against Gram-negative bacteria than against Gram-positive bacteria. The antioxidant properties of extracts were appraised by means of different antioxidant tests, including total phenolic content, 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging and metal chelating activities. Phytochemical analysis revealed the presence of carbohydrates, saponins, flavonoids, glycosides, tannins, phenols and alkaloids in the extracts. When the protein content in samples was analyzed, the largest values were obtained at 36.80% and 34.89% for Brassica oleracea acephala (Black Cabbage) and Corylus avellana (Hazelnut), respectively.

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土耳其食用的一些水果和蔬菜提取物的植物化学、抗菌和抗氧化活性的筛选

研究了48种不同科蔬菜的叶、种子和根乙醇提取物的抗氧化和抑菌活性。同时，对样品中的植物化学成分进行了鉴定。采用琼脂盘扩散法对10种微生物和2株真菌进行抑菌活性试验。提取物对所有菌株均有较高的抑菌活性。结果表明，植物提取物对革兰氏阴性菌的抑菌活性高于革兰氏阳性菌。通过总酚含量、清除2,2-二苯基-1-苦味酰肼(DPPH)自由基和金属螯合活性等抗氧化指标对提取物的抗氧化性能进行了评价。植物化学分析显示，提取物中含有碳水化合物、皂苷、黄酮类、糖苷、单宁、酚类和生物碱。对样品进行蛋白质含量分析时，黑白菜和榛果的蛋白质含量最高，分别为36.80%和34.89%。

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Celal Bayar Universitesi Fen Bilimleri Dergisi

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