To study the effect of Green plum citron double strain fermentation filtrate(DSF)on the proliferation rate of HaCaT keratinocytes by CCK8 assay.The effect of DSF on the mRNA transcription levels of filagolin(FLG),lori...To study the effect of Green plum citron double strain fermentation filtrate(DSF)on the proliferation rate of HaCaT keratinocytes by CCK8 assay.The effect of DSF on the mRNA transcription levels of filagolin(FLG),loricrin(LOR),and occludin 1(CLD1)in HaCaT cells in sodium dodecyl sulfate(SLS)model was investigated by qPCR.The effect of DSF on the content of TNF-αin the supernatant of HaCaT cells in the model was investigated by Elisa.The results showed that DSF had no toxicity to HaCaT cells,but it could increase the mRNA transcription levels of FLG,LOR and CLD1 in HaCaT cells in the model,and reduce the content of TNF-αin the supernatant of HaCaT cells in the model.DSF had a certain effect on skin care of strengthening skin barrier.展开更多
The aim of the study was to consider the suitability of a mixture of juices from jicama, winter melon, and carrot as a raw medium for producing probiotic juice by Lactobacillus strains (Lactobacillus plantarum CICC226...The aim of the study was to consider the suitability of a mixture of juices from jicama, winter melon, and carrot as a raw medium for producing probiotic juice by Lactobacillus strains (Lactobacillus plantarum CICC22696 and Lactobacillus acidophilus CICC20710), as well as evaluate changes of physicochemical and microbiological characteristics during fermentation and cold storage (4°C, 28 days). Both strains grew well in juice mixtures after 24 h of fermentation at 37°C, reaching nearly 9 and 8 log CFU/mL when inoculated with L. plantarum and L. acidophilus respectively. The viability of L. plantarum was near 8 log CFU/mL at the end of storage whereas viability of L. acidophilus only remained 4.57 log CFU/mL. Degradation of total carotenoids was in the range of 12% - 23% in fermentation periods and 16% - 23% during cold storage depending on the strain used. The values of lightness, redness, and yellowness increased during fermentation. However, this tendency was variable during cold storage when the values of redness and yellowness decreased. Sensory acceptability of the products was enhanced by adding sucrose or multi fruit juice (containing mainly tropical fruit juices). The fermented juice with L. plantarum is efficient to produce a functional probiotic beverage.展开更多
Hexanoic acid (HX) is a crucial flavor compound and precursor of ethyl caproate (EA), which determines the quality of Chinese Luzhou-flavor liquor (CLFL). The isolation, purification, identification, and optimization ...Hexanoic acid (HX) is a crucial flavor compound and precursor of ethyl caproate (EA), which determines the quality of Chinese Luzhou-flavor liquor (CLFL). The isolation, purification, identification, and optimization of fermentation conditions of HX-producing bacteria are essential for industrial CLFL production. In this study, one strain of HX-producing bacterium was isolated from six candidate bacterial strains and identified as Clostridium sartagoneforme. Then, the growth characteristics and HX production of C. sartagoneforme were investigated. Sodium acetate medium was identified as the optimal fermentation medium from four candidate media. C. sartagoneforme yielded 800.85 ± 12.87 mg/100mL HX in sodium acetate medium. Then, to further optimize the formula of the fermentation medium, the carbon and nitrogen sources and inorganic salt component of the fermentation medium were investigated using HX yields as an optimization index. Optimization was performed with a single-factor experiment and the Taguchi design method. The single-factor experiment showed that the highest HX outputs were obtained when the sodium acetate medium contained 2.5 g/L yeast extract, 1.8 g/L KCl, 20 g/L sodium acetate, 15 mL/L ethanol, and 1.5 g/L glucose. In the orthogonal experiment designed using the Taguchi design method, HX yields reached 2018.29 ± 46.37 mg/100mL in sodium acetate medium that contained 3.5 g/L yeast extract, 1.8 g/L KCl, 25 g/L sodium acetate, and 15 mL/L ethanol.展开更多
近五年随着消费者对“天然、绿色、安全”化妆品的关注度日益提高,发酵源化妆品的开发得到了长足发展。对于发酵源化妆品原料的开发,中外研究人员从不同角度入手,提高了相关发酵产物的活性、产量以及有效成分的含量。文章基于中国知网(C...近五年随着消费者对“天然、绿色、安全”化妆品的关注度日益提高,发酵源化妆品的开发得到了长足发展。对于发酵源化妆品原料的开发,中外研究人员从不同角度入手,提高了相关发酵产物的活性、产量以及有效成分的含量。文章基于中国知网(CNKI)数据库以及Web of Science核心数据库,借助文献计量方法和知识图谱可视化软件VOSviewer,以“化妆品”、“发酵”、“cosmetic”、“fermentation”或“fermented”为关键词构建近五年发酵源化妆品文献库,根据可视化分析知识图谱中的关键词共现频率分析近期发酵源化妆品领域的研究热点,并对目前化妆品相关的发酵菌种、发酵产物及功效宣称进行了汇总分析,同时对未来发酵源化妆品的发展与研发提出展望,为发酵源化妆品领域研究提供理论基础。展开更多
文摘To study the effect of Green plum citron double strain fermentation filtrate(DSF)on the proliferation rate of HaCaT keratinocytes by CCK8 assay.The effect of DSF on the mRNA transcription levels of filagolin(FLG),loricrin(LOR),and occludin 1(CLD1)in HaCaT cells in sodium dodecyl sulfate(SLS)model was investigated by qPCR.The effect of DSF on the content of TNF-αin the supernatant of HaCaT cells in the model was investigated by Elisa.The results showed that DSF had no toxicity to HaCaT cells,but it could increase the mRNA transcription levels of FLG,LOR and CLD1 in HaCaT cells in the model,and reduce the content of TNF-αin the supernatant of HaCaT cells in the model.DSF had a certain effect on skin care of strengthening skin barrier.
文摘The aim of the study was to consider the suitability of a mixture of juices from jicama, winter melon, and carrot as a raw medium for producing probiotic juice by Lactobacillus strains (Lactobacillus plantarum CICC22696 and Lactobacillus acidophilus CICC20710), as well as evaluate changes of physicochemical and microbiological characteristics during fermentation and cold storage (4°C, 28 days). Both strains grew well in juice mixtures after 24 h of fermentation at 37°C, reaching nearly 9 and 8 log CFU/mL when inoculated with L. plantarum and L. acidophilus respectively. The viability of L. plantarum was near 8 log CFU/mL at the end of storage whereas viability of L. acidophilus only remained 4.57 log CFU/mL. Degradation of total carotenoids was in the range of 12% - 23% in fermentation periods and 16% - 23% during cold storage depending on the strain used. The values of lightness, redness, and yellowness increased during fermentation. However, this tendency was variable during cold storage when the values of redness and yellowness decreased. Sensory acceptability of the products was enhanced by adding sucrose or multi fruit juice (containing mainly tropical fruit juices). The fermented juice with L. plantarum is efficient to produce a functional probiotic beverage.
文摘Hexanoic acid (HX) is a crucial flavor compound and precursor of ethyl caproate (EA), which determines the quality of Chinese Luzhou-flavor liquor (CLFL). The isolation, purification, identification, and optimization of fermentation conditions of HX-producing bacteria are essential for industrial CLFL production. In this study, one strain of HX-producing bacterium was isolated from six candidate bacterial strains and identified as Clostridium sartagoneforme. Then, the growth characteristics and HX production of C. sartagoneforme were investigated. Sodium acetate medium was identified as the optimal fermentation medium from four candidate media. C. sartagoneforme yielded 800.85 ± 12.87 mg/100mL HX in sodium acetate medium. Then, to further optimize the formula of the fermentation medium, the carbon and nitrogen sources and inorganic salt component of the fermentation medium were investigated using HX yields as an optimization index. Optimization was performed with a single-factor experiment and the Taguchi design method. The single-factor experiment showed that the highest HX outputs were obtained when the sodium acetate medium contained 2.5 g/L yeast extract, 1.8 g/L KCl, 20 g/L sodium acetate, 15 mL/L ethanol, and 1.5 g/L glucose. In the orthogonal experiment designed using the Taguchi design method, HX yields reached 2018.29 ± 46.37 mg/100mL in sodium acetate medium that contained 3.5 g/L yeast extract, 1.8 g/L KCl, 25 g/L sodium acetate, and 15 mL/L ethanol.
文摘近五年随着消费者对“天然、绿色、安全”化妆品的关注度日益提高,发酵源化妆品的开发得到了长足发展。对于发酵源化妆品原料的开发,中外研究人员从不同角度入手,提高了相关发酵产物的活性、产量以及有效成分的含量。文章基于中国知网(CNKI)数据库以及Web of Science核心数据库,借助文献计量方法和知识图谱可视化软件VOSviewer,以“化妆品”、“发酵”、“cosmetic”、“fermentation”或“fermented”为关键词构建近五年发酵源化妆品文献库,根据可视化分析知识图谱中的关键词共现频率分析近期发酵源化妆品领域的研究热点,并对目前化妆品相关的发酵菌种、发酵产物及功效宣称进行了汇总分析,同时对未来发酵源化妆品的发展与研发提出展望,为发酵源化妆品领域研究提供理论基础。
