This experiment evaluated the effect of soil management systems (bare fallow, sawdust mulch and black plastic mulch) on the contents of phenolic compounds (total phenolics, flavonoids, gallotannins and condensed tannins), antioxidant activity (DPPH free radical scavenging activity, hydroxyl radical scavenging activity, lipid peroxidation) and cytotoxic activity in berry and leaf extracts of seven black currant cultivars. Soil management systems and cultivars showed highly significant differences in the content of phenolic compounds, antioxidant and cytotoxic activity. Sawdust mulch and bare fallow treatments had a significant positive effect on the synthesis of phenolic compounds and antioxidant activity in both berries and leaves. On the other hand, black currants grown on black plastic mulch had the highest cytotoxic activity. The tested extracts showed strong antioxidant and cytotoxic potential. Antioxidant activity expressed as the 50% inhibition concentration (IC50 value) ranged from 31.62 to 59.13 µg/mL and from 64.06 to 81.90 µg/mL, while cytotoxic activity varied from 15.91 to 37.89 µg/mL and from 26.28 to 38.18 µg/mL for berries and leaves extracts, respectively. Generally, the results suggested that black currants grow well under varied soil management systems, and indicated that soil management systems had a significant effect on the synthesis and accumulation of the tested parameters.

中文翻译：

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土壤管理系统对黑加仑（Ribes nigrum L.）浆果和叶片提取物中酚类化合物，抗氧化和细胞毒活性的影响

该实验评估了土壤管理系统（裸露的休耕地，锯末覆盖物和黑色塑料覆盖物）对酚类化合物（总酚，类黄酮，没食子鞣质和缩合单宁酸）含量，抗氧化活性（DPPH自由基清除活性，羟基自由基清除）的影响。活性，脂质过氧化作用）和七个黑加仑品种的浆果和叶片提取物中的细胞毒活性。土壤管理系统和品种在酚类化合物含量，抗氧化剂和细胞毒性活性方面显示出极大的差异。木屑覆盖物和裸露的休耕处理对浆果和叶片中酚类化合物的合成和抗氧化活性均具有显着的积极作用。另一方面，在黑塑料覆盖物上生长的黑加仑具有最高的细胞毒性活性。测试的提取物显示出强大的抗氧化剂和细胞毒性潜力。以50％抑制浓度（IC50值）表示的抗氧化活性范围为31.62至59.13 µg / mL，范围为64.06至81.90 µg / mL，而细胞毒活性的变化范围分别为15.91至37.89 µg / mL和26.28至38.18 µg / mL。浆果和叶提取物分别。通常，结果表明黑加仑子在各种土壤管理系统下生长良好，并表明土壤管理系统对测试参数的合成和累积具有显着影响。浆果和叶提取物分别为18 µg / mL。通常，结果表明黑加仑子在各种土壤管理系统下生长良好，并表明土壤管理系统对测试参数的合成和累积具有显着影响。浆果和叶提取物分别为18 µg / mL。通常，结果表明黑加仑子在各种土壤管理系统下生长良好，并表明土壤管理系统对测试参数的合成和累积具有显着影响。