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首页> 美国卫生研究院文献>3 Biotech >Photo-fermentation of purple sweet potato (Ipomoea batatas L.) using probiotic bacteria and LED lights to yield functionalized bioactive compounds
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Photo-fermentation of purple sweet potato (Ipomoea batatas L.) using probiotic bacteria and LED lights to yield functionalized bioactive compounds

机译：使用益生菌和LED灯对紫色甘薯（Ipomoea batatas L.）进行光发酵以产生功能化的生物活性化合物

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The purpose of this study was to examine if fermentation of purple sweet potato (Ipomoea batatas L.) powder (PSP) by Lactobacillus brevis under green, red, blue, white light-emitting diode (LED) illumination or sunlight might yield functionalized products with good antibacterial, antioxidant activity, and/or cytotoxic activity. The Purple sweet potato (PSP) powder fermented with probiotic bacteria L. brevis under white LED light (1.9 ± 1.80/1.6 ± 0.52), blue LED light (1.4 ± 1.32/1.8 ± 0.83), or sunlight (1.2 ± 1.26/1.5 ± 1.83) for Propionibacterium acne and Staphylococcus epidermidis displayed good to moderate antibacterial activity based on minimum inhibitory concentration (MIC) red, blue, white LED lights and sunlight (80 µg/mL) for P. acne and S. epidermidis, minimum bactericidal concentration red, blue LED lights and sunlight shows (46/48, 61/70, 50/48 µg/mL) for P. acne and S. epidermidis. Antioxidant activity for dark, white, blue and green LED lights for ABTS and white, blue and green Led for DPPH assay resulted in lower activity. Fourier transform infrared spectroscopy was performed to determine the functional groups in the non-fermented (control) and fermented products of PSP powders obtained using different light sources. Sunlight, white, and blue LED light-fermented extracts contained alcohol, acid, and phenol groups, as well as aliphatic amines. The results of this study clearly indicate that fermentation of purple sweet potato with probiotic bacteria under various LED light sources can yield compounds that can be used in cosmetic and value-added food products.
机译：这项研究的目的是检验在绿色，红色，蓝色，白色发光二极管（LED）或阳光下，短乳杆菌在短时间内通过短乳杆菌发酵紫色甘薯（Ipomoea batatas L.）粉末（PSP）能否产生功能化的产品。良好的抗菌，抗氧化活性和/或细胞毒性活性。在白色LED灯（1.9±1.80 / 1.6±0.52），蓝色LED灯（1.4±1.32 / 1.8±0.83）或日光（1.2±1.26 / 1.5）下，用益生菌L.brevis发酵的紫甘薯（PSP）粉基于痤疮丙酸杆菌和表皮葡萄球菌的最低抑制浓度（MIC）红色，蓝色，白色LED灯和阳光（80 µg / mL），对痤疮丙酸杆菌和表皮葡萄球菌显示出良好至中等的抗菌活性（±1.83）红色，蓝色LED灯和阳光显示痤疮丙酸杆菌和表皮葡萄球菌（46 / 48、61 / 70、50 / 48 µg / mL）。对于ABTS的深色，白色，蓝色和绿色LED灯以及用于DPPH分析的白色，蓝色和绿色Led灯的抗氧化活性导致活性降低。进行傅里叶变换红外光谱法以确定使用不同光源获得的PSP粉末的非发酵（对照）和发酵产物中的官能团。阳光，白色和蓝色LED光发酵提取物含有醇，酸和酚基团以及脂肪族胺。这项研究的结果清楚地表明，在各种LED光源下用益生菌发酵紫色甘薯可以产生可用于化妆品和增值食品的化合物。

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