芦荟甙提取及检测技术研究进展

本文主要介绍芦荟甙的提取方法;各种样品中芦荟甙的不同检测方法,并进行检测方法比较,探讨芦荟甙的检测方法的准确性和可靠性,为开发芦荟甙产品检测打下基础。     

库拉索芦荟花的抗氧化功效研究

通过观察研究库拉索芦荟花提取物对斑马鱼体内ROS水平影响,测试库拉索芦荟花提取物的抗氧化功效,实验结果表明,芦荟花提取物在低浓度下对LPS刺激产生的ROS分泌量均具有显著的抑制作用,研究证明芦荟花提取物在化妆品应用中具备显著的抗氧化功效。     

芦荟在化妆品中的应用

芦荟亦称“油葱”。有消炎、抗菌止痒、抗过敏作用、软化皮肤、防粉刺、防肥胖、抑汗防臭、生发等功效,已在化妆品中应用和推广。芦荟中含有一种对人体有用的成分──芦荟大黄素,这是一种蒽醌甙类物质,蒽醌甙与头发中某些氨基酸作用能产生荧光物     

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。     

天然物中防晒成分的提取及稳定性研究

从天然物槐米、黄芩、芦荟中提取有效成分芸香甙(芦丁)、黄芩甙,芦荟甙,考察它们的紫外吸收特性,并对提取条件及稳定性进行了研究。     

几种天然防晒成分的提取及稳定性研究

分别从槐米、黄芩、芦荟中提取天然防晒成分芸香甙（芦丁）、黄芩甙、芦荟甙，考察它们的紫外吸收特性，并对提取条件及稳定性进行了研究。     

芦荟

介绍了芦荟的主要成分和功效、基础作用 ,并对芦荟的研究开发现状、我国目前的主要芦荟制品进行了阐述。与美国、日本和韩国相比 ,我国芦荟产业还处于初级阶段 ,产品的形式单一、附加值低     

芦荟化学成分的研究进展

芦荟是一种集药用、美容、营养于一身的神奇植物.芦荟产业属中国一个新兴产业,芦荟产品广泛应用于食品、化妆品、医药领域.芦荟主要化学成分及营养成分有糖类、蛋自质与氨基酸、矿物质、蒽醌类化合物、有机酸等.文章主要介绍了这些成分的主要种类及其常用的分析方法,为开发芦荟产品提供了有效的检测方法,有效促进芦荟产业的发展.     

植物提取纯化物全效美白、防晒、保湿性能研究

通过提取得到了芦荟、三七茎叶及制何首乌的纯化物,并研究了三种植物提取物对酪氨酸的抑制作用、防晒及保湿功效。实验结果表明,三七茎叶纯化物浓度为0.6 mg/mL,采用紫外分光光度法所得的抑制率最大为88.1%;分段和整体法比较所得的防晒功效最好的物质为芦荟;通过检测三种植物提取物在一定时间内的失水量比较所得制何首乌纯化物的保湿效果最好,失水率为92.6%。总的来讲,具有美白、防晒、保湿三重功效较好的物质是三七茎叶。     

印度化妆品生产概述

一、简要回顾 印度富有化妆品用天然产物,如芦荟、郁金香、指甲花、柠檬皮、葫芦巴、檀香水、印度楝树、玫瑰花瓣、芳香须芒草和蓖麻油、椰子油等.这些天然产物,因为发现他们有护肤、护体、护发染发和对一些皮肤病有治疗的功效,而被以粉状和提取物形式或其他适合的形式用于各种化妆品中.在现代化妆品引进印度市场以前,印度人使用的就是用这些天然产物生产的本地产品.他们认为,这些本地产品的特有功效是独一无二的,现代化妆品里的合成成份不能和他们比较.     

膜分离技术在芦荟原汁加工中的应用

利用膜分离技术将芦荟原汁分成三部分：芦荟水、芦荟苷浓缩液、芦荟多糖浓缩液。芦荟水可作饮料：芦荟苷浓缩液作药用原料;芦荟多糖浓缩液作食品、化妆品添加剂。     

Emodin voltammetric sensor based on molecularly imprinted polymer membrane‐modified electrode using a multiple hydrogen bonds strategy

Similar to those in complementary nucleotides' base pairs, we present a novel molecularly imprinted electrochemical sensor for emodin, constructed using a multiple hydrogen bonds strategy. We obtained the sensor by in situ photopolymerization, using allobarbital as a new functional monomer. We optimized the conditions of membrane imprinting and the composition of adsorption solvent. This artificial receptor exhibits high selectivity for the template in comparison with closely related analogs, aloin A and simetryne. The sensor was successfully applied in determination of emodin levels in one of the traditional Chinese medicines, the content of emodin in Sanhuang tablets detected using the voltammetric sensor and high performance liquid chromatography (HPLC) were 0.249 ± 0.009 (mg/tablet) and 0.246 ± 0.007 (mg/tablet), respectively. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012     

用于化妆品中的常见天然中草药及其功效

介绍了黄芩、芦荟、沙棘以及何首乌等20多种可应用于美容护肤类及护发乌发类化妆品中的常见天然中草药及其功效,并结合中医药理论简单分析了皮肤老化原因,指出天然中草药中含有很多的活性成分,将这些功效成分合理利用,有针对性地应用于化妆品中,对植物资源的开发利用以及功能化妆品的研制具有重要意义。     

兔毛纤维混纺工艺及产品性能研究

对兔毛纤维的基本性能进行测试、分析研究,选择适当的混纺比和纺纱工艺路线,将兔毛与腈纶、锦纶、芦荟纤维进行混纺,在电脑横机上分别采用3种不同混纺比的兔毛混纺纱编织纬平组织,最后对织物的外观、基本物理性能及服用性能进行对比研究。     

The Intervention and Mechanism of Action for Aloin against Subchronic Aflatoxin B1 Induced Hepatic Injury in Rats

As a class of difurancoumarin compounds with similar structures, aflatoxins (AF) are commonly found in the environment, soil, and food crops. AF pose a serious threat to the health of humans, poultry, and livestock. This study aimed to investigate the neuroprotective effect and detailed mechanism of aloin on hepatic injury induced by subchronic AFB1 in rats. The result showed that aloin could significantly inhibit the decrease in food intake, body weight growth, immune organ index, and serum albumin content caused by long-term AFB1 exposure. Meanwhile, aloin reduced the level of serum liver function and improved renal swelling and pathological changes of liver tissue. Aloin could also inhibit liver lipid peroxidation and improve liver antioxidant capacity. Further investigation revealed that aloin inhibited the activity and expression of hepatic CYP1A2 and CYP3A4 and down-regulated IL-1β expression in subchronic AFB1-induced liver injury rats. The above study demonstrated that aloin played an important role in blocking or delaying the development process of subchronic AFB1-induced hepatotoxicity. Therefore, aloin is considered to have a potential role as a protective agent against AFB1.     

Development of polysaccharide-based membranes incorporating the bioactive compound aloin

Chitosan-alginate (CA) and chitosan-xanthan (CX) membranes containing aloin were developed for use as wound dressings. The effects of aloin-to-biopolymer ratio on membranes morphology, aspect, liquid uptake, mass loss, mechanical properties, thermal behavior, aloin incorporation efficiency, and release kinetics were analyzed. CA membranes showed higher stability in liquid media and greater elongation at break. CX membranes had more homogeneous microstructure and slightly higher tensile strength. The opacity and color intensity of both formulations increased with aloin incorporation. Maximum aloin incorporation efficiencies were 56.0% and 79.5% in CA and CX membranes, respectively, and slower aloin release was observed for CA membranes.     

Cell Metabolomics Reveals the Potential Mechanism of Aloe Emodin and Emodin Inhibiting Breast Cancer Metastasis

Metastasis is one of the main obstacles for the treatment and prognosis of breast cancer. In this study, the effects and possible mechanisms of aloe emodin (AE) and emodin (EMD) for inhibiting breast cancer metastasis were investigated via cell metabolomics. First, a co-culture model of MCF-7 and HUVEC cells was established and compared with a traditional single culture of MCF-7 cells. The results showed that HUVEC cells could promote the development of cancer cells to a malignant phenotype. Moreover, AE and EMD could inhibit adhesion, invasion, and angiogenesis and induce anoikis of MCF-7 cells in co-culture model. Then, the potential mechanisms behind AE and EMD inhibition of MCF-7 cell metastasis were explored using a metabolomics method based on UPLC-Q-TOF/MS multivariate statistical analysis. Consequently, 27 and 13 biomarkers were identified in AE and EMD groups, respectively, including polyamine metabolism, methionine cycle, TCA cycle, glutathione metabolism, purine metabolism, and aspartate synthesis. The typical metabolites were quantitatively analyzed, and the results showed that the inhibitory effect of AE was significantly better than EMD. All results confirmed that AE and EMD could inhibit metastasis of breast cancer cells through different pathways. Our study provides an overall view of the underlying mechanisms of AE and EMD against breast cancer metastasis.     

中国芦荟与库拉索芦荟的化学成份比较研究

本文对云南省元江县引种的产于云南元江河谷的野生中国芦荟 (简称元江芦荟 )及库拉索芦荟进行了比较研究。研究结果表明 ,二种芦荟的主要化学成份基本一致 ,分布部位也相同。均含有芦荟中具有生理活性的特征化合物、氨基酸、维生素、矿物质等成份 ,但是某些成份的含量有差异。元江芦荟是一种具有发展潜力的芦荟品种。目前这方面的研究未见报导     

火焰原子吸收光谱法测定芦荟中的钙、镁含量

建立了火焰原子吸收光谱法测定芦荟中钙、镁含量的方法。该方法的检出限量：钙为０－３μｇ／ｇ,镁为０－０２ μｇ／ｇ;平均加标回收率：钙为９９－１％ ,镁为９９－７ ％ ;相对标准偏差：钙为０－６６％ ,镁为０－５２％ 。本方法已用于芦荟鲜叶及芦荟制品中钙、镁含量的测定,结果令人满意。