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首页> 外文期刊>Journal of food process engineering >GLOBAL YIELDS, CHEMICAL COMPOSITIONS AND ANTIOXIDANT ACTIVITIES OF CLOVE BASIL (OCIMUM GRATISSIMUM L.) EXTRACTS OBTAINED BY SUPERCRITICAL FLUID EXTRACTION
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GLOBAL YIELDS, CHEMICAL COMPOSITIONS AND ANTIOXIDANT ACTIVITIES OF CLOVE BASIL (OCIMUM GRATISSIMUM L.) EXTRACTS OBTAINED BY SUPERCRITICAL FLUID EXTRACTION

机译：超临界流体萃取获得的小罗勒（OCIMUM GRATISSIMUM L.）提取物的全球产量，化学组成和抗氧化剂活性

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Clove basil (Ocimum gratissimum) extracts were obtained with supercritical CO_2. Clove basil was cultivated using 0, 4, 8 and 12 kg/m~2 of organic fertilizer and was harvested in four seasons: winter, spring, summer and autumn, in the Southern Hemisphere. The extracts' global yields were determined at 40C and 150 bar for samples from all cultivation conditions and harvesting seasons. For selected samples, the extracts' global yields at 40C were determined for pressures of 100, 150, 200, 250 and 300 bar. The extracts were analyzed by gas chromatography-flame ionization detector. Antioxidant activity (AA) was assessed using the coupled reaction of beta-carotene and linolenic acid. The extracts' global yields varied from 0.91 to 1.79% (dry basis), andthe AAs varied from 62 to 84% compared with the control beta-carotene. Eugenol and beta-selinene were the major compounds. The relative proportion of eugenol varied from 35 to 60%, while the content of beta-selinene remained approximately constant (11.5—14.1 %, area). The other substances quantified in the extracts were 1,8 cineole, trans-caryophyllene and alpha-selinene.
机译：用超临界CO_2获得丁香罗勒（Ocimum gratissimum）提取物。丁香罗勒是使用0、4、8和12 kg / m〜2的有机肥栽培的，并在南半球的四个季节（冬季，春季，夏季和秋季）收获。对于所有栽培条件和收获季节的样品，在40℃和150 bar下确定提取物的全球产量。对于选定的样品，在100、150、200、250和300 bar的压力下确定了40℃下提取物的总收率。通过气相色谱-火焰电离检测器分析提取物。使用β-胡萝卜素和亚麻酸的偶联反应评估抗氧化活性（AA）。与对照β-胡萝卜素相比，提取物的全球产率在0.91％至1.79％（干基）之间变化，AA含量在62％至84％之间变化。丁香酚和β-selinene是主要化合物。丁子香酚的相对比例从35％到60％不等，而β-selinene的含量保持大致恒定（11.5-14.1％，面积）。提取物中定量的其他物质是1,8桉树脑，反叶石竹烯和α-selinene。

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