A coccoid green microalga, namely Chlorococcum minutum NIOF17/002, was isolated from the Delta region of Egypt, and further extracted with solvents both sequentially and individually to study antimicrobial and antioxidant activities of this microalga. The acetone extract gave maximum antimicrobial activity against the 5 bacterial pathogens and showed the lowest minimum inhibitory concentration against Salmonella typhi, while the methanol extract showed the highest reducing activity and total antioxidant capacity (3.92 and 9.83 mg ascorbic acid equivalents g⁻¹, respectively) among the extracts. The total phenolic content (TPC) in methanol extract was found to be 6.65 mg gallic acid equivalents g⁻¹, which was the highest TPC of the extracts. Acetone and methanol extracts were subsequently characterized using gas chromatography–mass spectrometry for identifying chemical compounds. The former was found to be enriched with palmitic and linolenic acids, and the latter contained mostly eugenol and methylated fatty acids. The presence of these bioactive compounds in C. minutum NIOF17/002 might make it beneficial as a source of antimicrobial and antioxidant agents.

从埃及三角洲地区分离出球状绿微藻，即Minlorum minutum NIOF17 / 002 ，然后依次和分别用溶剂萃取，以研究该微藻的抗微生物和抗氧化活性。丙酮提取物对5种细菌病原体具有最大的抗菌活性，对伤寒沙门氏菌的最低抑菌浓度最低，而甲醇提取物则具有最高的还原活性和总抗氧化能力（分别为3.92和9.83 mg抗坏血酸当量g ^-1）。在提取物中。发现甲醇提取物中的总酚含量（TPC）为6.65 mg没食子酸当量g ^-1，这是提取物中最高的TPC。随后使用气相色谱-质谱法对丙酮和甲醇提取物进行表征，以鉴定化合物。发现前者富含棕榈酸和亚麻酸，后者主要含有丁子香酚和甲基化脂肪酸。在这些生物活性化合物的存在下藻NIOF17 / 002可能使其有益的，因为抗微生物剂和抗氧化剂的来源。