芦荟、白芷提取物联合应用的抗氧化和美白活性评估

为评估芦荟和白芷的乙醇提取物联合应用在抗氧化和美白方面的协同增效作用,采用乙醇浸提法从芦荟和白芷中提取分离功效成分,应用DPPH和ABTS方法评估其抗氧化活性,酪氨酸酶活性抑制实验评估其美白活性。结果表明,芦荟和白芷提取物联合应用比单独应用具有更强的抗氧化、清除DPPH自由基和抑制酪氨酸酶活性。芦荟和白芷提取物联合应用在抗氧化和美白方面具有协同增效作用。     

丹参挥发油与蒲公英复配物在化妆品中的应用

分别测试丹参挥发油、蒲公英提取物及其复配物的抗氧化、美白、抑菌、细胞毒性和皮肤渗透性等作用，并考察丹参挥发油与蒲公英复配后是否具有协同增效作用。结果表明，复配物的抗氧化性能比二者单独作用效果更强，略高于阳性对照VC；丹参挥发油对酪氨酸酶活性的抑制作用强于阳性对照熊果苷，对酪氨酸酶的抑制类型为竞争性抑制，抑制常数KI为0.0049 mg/L，丹参挥发油与蒲公英两者之间对酪氨酸酶抑制无拮抗作用；复配物对金黄色葡萄球菌的抑制作用好于单一成分，与阳性对照硫酸链霉素效果相当；提取物为100 mg/L浓度时无明显细胞毒性；丹参挥发油与蒲公英复配后，蒲公英提取物的皮肤累计渗透量比单独作用时增大，丹参挥发油可促进蒲公英提取物的透皮吸收，复配物具有协同抗氧化和抑菌功效，无明显细胞毒性，皮肤渗透性较好。     

英红九号红茶乳液的性能研究

以英红九号红茶提取物作为功能性物质,添加到基础乳液制备工艺中,制得的英红九号红茶乳液。乳液呈淡黄色半透明乳液状,香味清淡。将英红九号红茶乳液与市售基础乳液对保湿、美白等性能进行对比检测,发现英红九号红茶乳液保湿功效下降相对较缓、黑色素质量分数下降较快,8 h后保湿率为7.49%、黑色素质量分数为94.99%,其保湿、美白功效均优于市售乳液。其卫生指标、理化指标、稳定性和安全性检验结果表明,英红九号红茶乳液稳定安全,符合各项理化卫生指标、无刺激性,是一款性能较为优越的日用护肤品。     

芦荟花的化学组成与生物活性研究进展

综述了芦荟花的主要化学组成，介绍了芦荟花的抗氧化、抗衰老、皮肤美白、皮肤保湿、抗皮肤刺激和抗皮肤过敏等功效，给出了芦荟花在化妆品中应用建议。     

食用菌的皮肤护理功效以及在化妆品中的应用

食用菌具有丰富的营养价值、保健和药用疗效,含有多糖类、核苷类、多肽氨基酸类和萜类等主要功效成分。重点介绍了食用菌的抗氧化、抗衰老、美白和保湿等功效,同时列举了食用菌在Origins和露得清等化妆品中的应用实例,并对未来食用菌的应用发展趋势进行了展望。     

厚朴在个人护理品中的应用研究

主要介绍了厚朴的主要功效成分和基本功效特性,阐述了厚朴活性成分具有的抗菌、消炎、防晒、美白、抗氧化等多种功效,指出厚朴提取物在口腔健康、祛痘消炎、美白防晒、抗衰老等个人护理品中具有广阔应用前景和潜在经济价值。     

仙人掌提取物在化妆品中的应用

介绍了仙人掌的化学成分及功效,重点阐述了仙人掌在化妆品中的应用情况。对仙人掌提取物在美白、抗过敏、保湿和抗氧化等方面的功效进行了评价。在此基础上研制了一款含仙人掌提取物的护肤类膏霜化妆品,并且已通过相关检测。     

体外称重法测定自制蜂王幼虫美白、抗衰老防皱面霜保湿性能

通过比较透明质酸(HA)对照品与自制蜂王幼虫美白、抗衰老防皱面霜的保湿性能,了解自制蜂王幼虫美白、抗衰老防皱面霜的保湿功效。结果表明自制蜂王幼虫美白、抗衰老防皱面霜中含有一定量的保湿成分,具有更好地保湿功效。     

纳米脂质体在包裹植物化学提取物技术中的应用

现如今，随着生活水平得到了提高，女性对化妆品的需求量越来越多，对化妆品品质的要求已从单一护理性化妆品转向具有高保湿、抗衰老、防晒、美白和祛斑等功能性护肤品。本文着重对植物化学提取物、植物化学提取物的功效作用、纳米脂质体的结构功能和载植物化学提取物纳米脂质体作为功能性成分的载体在化妆品制剂中的作用进行阐述。     

金银花多酚与红豆越橘乙醇提取物协同护肤

以金银花多酚和红豆越橘乙醇提取物为原料，采用称重法、稀释透过率法、2,2′-联氮-二(3-乙基-苯并噻唑-6-磺酸)二铵盐（ABTS）和1,1-二苯基-2-三硝基苯肼（DPPH）自由基清除实验、酪氨酸酶抑制实验、弹性蛋白酶抑制实验、联合指数（CI）考察了金银花多酚与红豆越橘乙醇提取物单独及不同质量比联合应用在保湿、防晒、抗氧化、抑制黑色素和抗衰老方面的功效。结果显示，m(金银花多酚)∶m(红豆越橘乙醇提取物)=1∶2、1∶4在保湿性能方面具有协同作用；m(金银花多酚)∶m(红豆越橘乙醇提取物)=4∶1、2∶1和1∶1时在抗UVB性能方面具有协同作用；5个复配比例在清除ABTS和DPPH自由基方面均有协同作用，CI值分别为0.79±0.036、0.83±0.041、0.85±0.026、0.96±0.03、0.98±0.027和0.69±0.046、0.67±0.039、0.78±0.031、0.89±0.018、0.97±0.029；除m(金银花多酚)∶m(红豆越橘乙醇提取物)=4∶1外，其他复配比例在抑制酪氨酸酶活性方面均表现出协同作用，m(金银花多酚)∶m(红豆越橘乙醇提取物)=2...     

Changes of constituents and activity to apoptosis and cell cycle during fermentation of tea

Tea is believed to be beneficial for health, and the effects of the fermentation process on its contributions to apoptosis and cell cycle arrest of gastric cancer cells have not been completely investigated. In this study, the chemical components in green tea, black tea and pu-erh tea aqueous extracts were analyzed and compared. The polysaccharide and caffeine levels were substantially higher in the fermented black tea and pu-erh tea, while the polyphenol level was higher in the unfermented green tea. Hence, a treatment of tea aqueous extract and the components, which are emerging as promising anticancer agents, were pursued to determine whether this treatment could lead to enhance apoptosis and cell cycle arrest. In the human gastric cancer cell line SGC-7901, the cell viability and flow cytometry analysis for apoptotic cells indicated effects in a dose-dependent inhibition manner for the three tea treatment groups. The apoptosis rates were found to be elevated after 48 h of treatment with 31.2, 125, and 500 μg/mL of green tea extract, the higher catechins content may be involved in the mechanism. Cell cycle was arrested in S phase in the fermented black tea and pu-erh tea, and the populations were significantly decreased in G2/M phases, possibly due to the oxidation of tea polyphenols, which causes an increase of theabrownins. CCC-HEL-1 normal cells were not sensitive to tea extract. These findings suggest that the fermentation process causes changes of the compounds which might be involved in the changes of cell proliferation inhibition, apoptosis induction and cell cycle arrest.     

茶多酚、茶多糖和茶氨酸的联合提取工艺研究

以日照绿茶为实验原料,利用水溶剂提取法,通过正交实验及单因素平行实验的方案,分析了料液质量比、浸提时间和浸提温度对茶多酚、茶多糖和茶氨酸联合萃取效果的影响;通过对萃取剂选择以及离子交换树脂的吸附性能研究,确定了茶多酚、茶多糖和茶氨酸联合分离提取的工艺。实验结果表明:该工艺可有效地从茶叶中提取茶多酚、茶多糖和茶氨酸,茶多酚的提取率为13.85%;茶多糖的提取率为1.76%;茶氨酸的提取率为0.19%。     

Furan fatty acid concentrations in tea infusions prepared from green,black, and herbal teas

Furan fatty acids (FuFAs) are valuable antioxidants with highly effective radical scavenging properties which are widely distributed at low levels in food. Previous research indicated that tea is a valuable source of FuFAs. However, tea is only consumed in form of infusions. To fill this gap, we prepared infusions from different herbal, green, and black teas. Initial measurements with GC-MSMS of tea verified previous findings that 11-(3,4-dimethyl-5-penylfuran-2-yl)-undecanoic acid (11D5) was the prevalent FuFA in tea matrix. Therefore, 11D5 was quantified in tea infusions by means of UHPLC-MSMS equipment after mild alkaline hydrolysis. While herbal tea infusions were low or free of FuFAs, 11D5 was detectable in all samples of green and black tea infusions. Amounts of 11D5 were higher in green tea than in black tea. Moreover, Darjeeling tea infusions were by ~30% richer in 11D5 than black and green teas from other regions. Each cup of green and black tea infusion may provide 20–60 μg 11D5, which is about 5% of the amounts found in tea samples. Spread over the day, regular tea consumption may contribute to the intake of valuable FuFAs.     

茶叶提取物在牙膏中的应用

茶叶中含有茶多酚、生物碱、糖类、氨基酸、茶色素、皂苷、氟以及维生素等多种功能成分,茶叶提取物具有抑菌抗炎、清热解毒、回甘生津、防龋抗蛀、抗过敏质和祛除烟毒等功效,已广泛应用于医药、化妆品、保健品和食品添加剂等领域。含茶叶提取物的牙膏具有抗菌消炎、预防龋齿、生津回甘和分解烟毒等作用。     

Antioxidant activity of tea extracts in lipids and correlation with polyphenol content

The present study examined the antioxidative activity of water and ethanol extracts of green and black tea leaves against the oxidation of heated sunflower oil and lard. Oxidation was conducted at 110 °C in the Rancimat test. Total polyphenols and catechin contents in tea extracts were measured. The research showed that the total polyphenol content in green and black tea leaves was 205.2 and 148.7 mg/g, respectively. In tea leaves extracts, it ranged between 245.9 mg/g and 837.7 mg/g and depended on the extraction solvent and the kind of tea used (p <0.001). The highest polyphenol content was observed in samples extracted with 95% ethanol, lower contents were found with the use of water. Results showed that the highest antioxidant activity, measured as an induction period, with 1000 ppm green tea ethanol extract, was comparable to á‐tocopherol activity in sunflower oil. In lard, the longest induction period was measured with 500 and 1000 ppm of green tea ethanol extract. Other tea extract concentrations were significantly less active. Statistical analysis of the tea extract antioxidant activity in lipids in the Rancimat test showed an essential influence of the catechin contents. Further statistical analysis also showed an influence of (?)‐epicatechin gallate (ECG), (?)‐epicatechin (EC), and (+)‐catechin (C) contents in the tea extracts on the antioxidant activity in lipids. It was stated that the antioxidant activity was higher in tea extracts containing high levels of ECG, EC, and C.     

绿茶洗发香波的制备及性能研究

研究通过热水浸提的方式得到绿茶提取液,将绿茶提取液添加到洗发香波中,找到了绿茶提取液对洗发香波性能的影响因素,成功得到了绿茶洗发香波的最佳配方和制备的工艺流程。通过实验检测,绿茶洗发香波的各项性能指标均符合行业标准,并通过自愿受试者对不同洗发液的使用情况的反馈,说明绿茶洗发液是集清洗、去屑、调理、药理、黑发于一体的高级洗发香波。绿茶洗发香波的制备工艺简单、性价比高,适合大小工厂、企业的生产。     

茶多酚的制备新方法

阐述了茶多酚制备的传统方法及存在的问题。报道了运用超临界CO2 萃取技术与溶剂萃取相结合生产茶多酚的方法。实验结果表明 :运用超临界CO2 萃取技术与溶剂萃取相结合的方法生产的茶多酚 ,其含量可大于 90 % ,咖啡因含量小于 2 % ,收率大于 9% (以茶叶计 ) ,残留溶剂为零     

一种复方中草药提取液的护肤功效研究

采用体外实验和人体实验相结合方法,对5种中草药为原料制成的复方提取液进行美白、抗衰老、抗敏舒缓功效研究,并对其刺激性进行评价。结果表明,复方提取液的刺激性分级为无刺激性,具有较强的抑制酪氨酸酶活性、清除DPPH/羟基/超氧阴离子自由基及抑制透明质酸酶活性的能力;使用含复方提取液的乳液4周后,能显著减少皮肤黑色素含量和降低皮肤紫外斑、黄褐斑、皱纹、纹理分值;此外,含复方提取液的乳液能够降低乳酸刺痛程度。上述结果说明该复方中草药提取液使用安全性高,具有较好的美白、抗衰老、抗敏舒缓功效。