[目的]本文對(duì)埃及產(chǎn)的百里香(Thymus vulgaris L.)和牛至(Origanum vulgare L.)的化學(xué)成分、抗氧化和抗菌活性進(jìn)行了研究。[方法]本文采用GC-MS法和福林酚方法對(duì)樣品中的化學(xué)成分和多酚物質(zhì)進(jìn)行了分析,同時(shí)使用DPPH試劑和抑菌圈實(shí)驗(yàn)評(píng)價(jià)樣品的抗氧化和抗菌效果。[結(jié)果]埃及產(chǎn)百里香精油中主要含有百里香酚(45.19%)、p-傘花烴(13.59%)、香芹酚(7.65%)和松油烯(6.82%),牛至精油中主要有香芹酚(52.46%)、松油烯-4-醇(7.43%)、順-β-萜品醇(5.64%)和松油烯(4.73%)。百里香和牛至的精油中的多酚含量分別為228.78 mg/g和129.43 mg/g,表現(xiàn)出顯著的DPPH自由基清除能力,而殘?jiān)械亩喾雍肯鄬?duì)較少(123.68 mg/g和138.26 mg/g),但抗氧化能力要更強(qiáng)。在抗菌能力方面,兩種提取物均對(duì)Klebsiella pneumonia(35.8±0.89)mm和(37±0.47)mm的抑制能力最強(qiáng),而百里香和牛至的精油則分別對(duì)Rhodotorula mucilaginosa(25.7±0.27...

【文章頁(yè)數(shù)】：14 頁(yè)

【文章目錄】：
0 Introduction
1 Materials and Methods
    1.1 Plant Materials
    1.2 Extraction of essential oil
    1.3 Gas chromatography/mass spectrometry analysis of oils
    1.4 Preparation of plants extracts (PEs)
    1.5 DPPH radical scavenging assay
    1.6 Determination of total phenolic contents (TPC)
    1.7 Antimicrobial activity
        1.7.1 Selected microorganisms
        1.7.2 Antimicrobial test
    1.8 Statistical analysis
2 Results and Discussion
    2.1 Chemical composition of Essential Oils
    2.2 Total Phenolic Content and Antioxidant Activity of Essential Oils (EOs)
    2.3 Total Phenolic Content and Antioxidant Activitiy of plants extracts (PEs)
    2.4 Antimicrobial activity
3 Conclusions



本文編號(hào)：4033813