以小球藻为底物材料,利用植物乳杆菌,发酵制备了小球藻发酵产物化妆品原料。以小球藻发酵产物为研究对象,通过人成纤维细胞增殖试验、Ⅰ型胶原蛋白含量检测试验以及ABTS自由基清除试验等,对其体外抗衰老功效进行了研究,并通过人体封闭式斑贴试验对其安全性进行评价。结果显示,体积分数为10%的小球藻发酵产物能够提高人皮肤成纤维细胞的存活率,可达到185.71%±2.25%(P<0.01),同时能够提高该细胞合成Ⅰ型胶原蛋白的能力,是阴性对照的(4.43±0.34)倍(P<0.01);小球藻发酵产物能有效清除ABTS自由基,且呈剂量依赖性模型,当体积分数达到40.5%时,对ABTS自由基的清除率达到62.73%±1.4%(P<0.01);人体封闭式斑贴试验结果显示小球藻发酵产物具有较好的皮肤安全性。实验表明,小球藻发酵产物具有较好的抗衰老功效且对人体具有较好的安全性。
Chlorella is a kind of single-celled green algae, which is rich in high-quality protein, linolenic acid, polysaccharides, nucleotides, peptides, vitamins, trace elements and other substances, showing anti-virus, anti-cancer, anti-oxidation, anti-inflammatory functions, etc. Its nutrient composition and biological activity are becoming a research hotspot in recent years. Herein, Chlorella was used as a substrate material to produce Chlorella ferment for cosmetics by fermentation with Lactobacillus plantarum. Taking the Chlorella fermentation product as the research object, the study on its anti-aging effect in vitro and evaluation of its safety were carried out through a variety of methods such as human fibroblast proliferation test, type Ⅰ collagen content test (ELISA), ABTS free radical scavenging test and the human body closed patch test. The results showed that the Chlorella fermentation product with a volume fraction of 10% could increase the survival rate of human skin fibroblasts, reaching 185.71%±2.25% (P<0.01), and meanwhile the ability of human skin fibroblasts to synthesize type I collagen was improved, which was 4.43±0.34 times of the negative control (P<0.01). The Chlorella fermentation product could effectively scavenge ABTS free radicals in a dose-dependent model. When the volume fraction reached 40.5%, the scavenging rate against ABTS free radicals reached 62.73%±1.4% (P<0.01). The results of the human closed patch test showed that the Chlorella fermentation product had good skin safety. In summary, the Chlorella fermentation product can promote the proliferation of human fibroblasts, increase the content of type I collagen, and scavenge ABTS free radicals, thereby exhibiting good anti-aging effects and good safety to the human body. This provides a better basis for the development and utilization of Chlorella in the field of cosmetics.