姜黄素乳液的研究进展

姜黄素是一种具有多种功能活性的天然多酚类色素,制备乳液对其进行包封,在解决其溶解度低、稳定性差、生物利用度低等问题上显示出较大的优势,并逐步扩大其在食品、医药领域的应用。本文介绍了姜黄素的基本性质以及姜黄素乳液的制备方法和稳定性,并对姜黄素的生物利用度进行综述,最后对其发展前景作出展望。     

内源乳化法制备海藻酸盐微胶囊的研究进展

内源乳化法是近年来兴起的一种海藻酸盐微胶囊制备方法,在制备过程中使用的都是无毒试剂和溶剂,可在生物、食品、医药等行业中用于包埋生物活性物质。本文着重介绍了内源乳化法制备海藻酸盐微胶囊的原理,比较了内源乳化法与外源乳化法的异同,分析了制备过程中影响微胶囊性质的因素,归纳了近年来其在生物活性物质包埋中的应用,并展望了内源乳化法制备海藻酸盐微胶囊的发展前景。      

姜黄素纳米载体的制备与应用研究进展

姜黄素是从姜黄中提取出来的一种具有抑菌、抗氧化、抗肿瘤、预防及治疗神经性疾病的天然多酚类化合物,被广泛应用于食品工业与医药领域中,具有较高的研究价值和广阔的应用前景。由于姜黄素水溶性、稳定性差等缺点,使其在实际应用中受到一定限制,因此,通过利用超声法、溶剂挥发法、乳化法、透析法、超临界流体等方法构建姜黄素的纳米传递体系来改善,还使其具有缓控释的特点,并提高作用效果。对姜黄素纳米递送体系的构建、作用机理、纳米载体的制备方法、载体负载和缓释的机制及姜黄素纳米载体在食品和医药领域的应用进行综述,以期为姜黄素的高效生物利用和产品研发提供理论基础和技术支撑。     

蛋白基姜黄素纳米颗粒递送体系研究进展

姜黄素是一种具有抗氧化、抗菌以及抗癌等多种生物活性的疏水性植物多酚。因存在水溶性差、不稳定、易分解以及在体内代谢快和生物利用度低的问题,姜黄素作为功能性食品配料的应用受到了限制。食品胶体递送体系是一种利用食品组分间相互作用,通过构建食品胶体微结构实现对食品功能因子包埋、保护及控释的技术。以蛋白质为载体构建的姜黄素复合纳米颗粒胶体递送系统能够为姜黄素在功能食品中的应用提供一种有效途径。该文介绍当前蛋白基姜黄素复合纳米颗粒的制备方法,并详细阐述不同蛋白质（动物蛋白、植物蛋白以及蛋白水解物）在构建姜黄素复合纳米颗粒中的应用,以期为姜黄素在功能性食品中的应用提供参考。     

食品运载体系包埋姜黄素的研究进展

姜黄素具有抗氧化、抗肿瘤、降血脂和预防老年痴呆等多种生理功能,还可以用作天然着色剂、食品防腐剂、抗氧化剂等;然而水溶性差、不稳定、代谢速度快、生物利用率低等缺陷限制了其在食品领域中的应用。利用食品运载体系,以天然生物分子为材料制备姜黄素的传递载体可以解决上述问题。本文介绍了姜黄素的结构特征和理化性质,以及限制其利用的主要因素和原理,对现有的运载体系及其在提高姜黄素生物利用度方面的研究现状进行综述,最后针对目前研究中存在的问题对未来姜黄素运载体系的研究方向提出合理建议。     

不同壁材对大豆生物解离乳状液微胶囊品质的影响

为拓宽大豆生物解离乳状液的综合应用,有效解决破乳困难问题,本文采用喷雾干燥法制备大豆生物解离乳状液微胶囊,以乳液的乳化活性、乳化稳定性、粒径分布、流变学性质和喷雾干燥制得的微胶囊包埋率、热稳定性、表面微观结构为指标,研究5种复合壁材对大豆生物解离乳状液微胶囊品质的影响。结果表明,喷雾干燥前,CMC-MD为壁材的混合乳液的黏度最高,为39.18 mPa·s,且乳化性较好,粒径分布向较小粒径方向移动至0.6~2.0 μm。CMC-MD复合壁材制备的微胶囊包埋率最高,达到90.3%,热稳定性最好,结构变化起始温度最高,为98.3℃。扫描电镜图(SEM)显示不同壁材包埋的微胶囊呈现规则的球形或椭球形颗粒,颗粒直径有一定的差异,以CMC-MD为壁材的微胶囊大小均一,结构致密,具有良好的包埋结构,说明CMC-MD能够作为大豆生物解离乳状液微胶囊的壁材,制备出的微胶囊具有良好的包埋率、热稳定性及表面微观结构,对于生物解离乳状液加工应用领域的拓展和产业化的发展具有重大意义。     

基于β-环糊精的姜黄素传递载体的研究进展

姜黄素是一种重要的天然色素和调味品,具有抗氧化、抗肿瘤、降血脂和预防老年痴呆等生理功能,但是水溶性差、理化性质不稳定、生物利用率低等缺点限制了其在食品和调味品中的应用。以β-环糊精为基质制备姜黄素的传递载体,可有效解决上述问题。文章结合国内外的研究文献,系统总结了β-环糊精的结构和性质、传递载体的制备方法、β-环糊精对姜黄素的运载及其在食品和调味品中的应用等方面的内容,最后对基于β-环糊精的姜黄素传递载体的现状进行了分析,并对其在食品和调味品中的发展前景进行了展望。     

十二烯基琥珀酸淀粉酯性质的研究

十二烯基酯化淀粉是一种优良的增稠和乳化剂.作者研究了其力学性质和乳化稳定性,并进行了微胶囊包埋实验,实验证明其包埋效果比传统的壁材更好.     

不同壁材对水酶法提取油茶籽油乳化相微胶囊的影响

以水酶法提取油茶籽油所制得的乳化相为芯材,分别以明胶-阿拉伯胶、明胶-海藻酸钠、乳清蛋白-阿拉伯胶、乳清蛋白-海藻酸钠为壁材,制备4种油茶籽油乳化相微胶囊,并分析4种微胶囊的性质。结果表明：在4种微胶囊中,以明胶-海藻酸钠为壁材制备的油茶籽油乳化相微胶囊包埋效果最好,包埋率高达93.96%;以明胶-阿拉伯胶为壁材制备的油茶籽油乳化相微胶囊具有最小的平均粒径,更好的溶解性和热稳定性,可以制备出具有更好性能的油茶籽油乳化相微胶囊产品。     

姜黄素生理活性、代谢以及生物利用度的研究进展

姜黄素是一种多酚类化合物,着色能力强,是世界上销量最大的七大天然食用色素之一,是被WHO和FDA公认的天然食品添加剂。除此之外,姜黄素因其具有分子中含有多个双键,同时还有酚羟基和羰基等活性基团,在抗肿瘤、抗炎、抗氧化、清除自由基、抗微生物以及对心血管系统、消化系统等多方面均有疗效,但其生物利用度低限制了在医药方面的应用,因此如何提高姜黄素的生物利用度成为国内外研究者共同关注的课题。该文从国内外研究现状出发,对姜黄素的生理活性及应用进行概括,并对姜黄素体内代谢途径进行综述,分析指出姜黄素生物利用度低的原因,并介绍研究姜黄素生物利用度的模型和提高其生物利用度的方法,为全面系统研究姜黄素生物利用度打下基础。     

姜黄素脂质体的研究进展

姜黄素具有多种药理活性,但其不稳定性、低水溶性以及较低的生物利用率极大限制了姜黄素的临床应用。为改善其理化特性和提高其生理功能,研究者对姜黄素剂型进行了广泛研究,其中姜黄素脂质体的研究已取得一定进展,本文综述了近年来姜黄素脂质体的制备技术、质量评价及其生理特性,为进一步开发利用姜黄素脂质体提供一定的参考。      

高分子材料在姜黄素改性中的应用

姜黄素是姜黄的主要化学成分之一,具有抗氧化、抗肿瘤和抗菌等生物活性,在食品工业、医药工业有广阔的应用前景。然而,溶解性和稳定性差以及生物利用度低限制了姜黄素的应用。新剂型和新高分子材料的开发为姜黄素的改性奠定了基础,高分子材料在改善姜黄素水溶性和稳定性,调节释放速率,提高生物利用度等方面起到了非常重要的作用。本文综述了聚乙二醇类、聚乙烯吡咯烷酮类、聚氧乙烯类聚乳酸类、卡波姆、聚氰基丙烯酸酯、环糊精及其衍生物、壳聚糖及其衍生物、淀粉以及蛋白质类高分子材料在姜黄素改性中的应用,不同高分子材料在改善姜黄素性能方面的作用是不同的。对应用中可能存在的问题进行了概述。药用高分子材料的加入改善了姜黄素的性能,拓宽了姜黄素的应用领域。     

Encapsulation of curcumin in electrosprayed gelatin microspheres enhances its bioaccessibility and widens its uses in food applications

Curcumin has uses as a food colorant and functional ingredient, these uses being restrained owing to its low solubility in water, which limits its dispersion in food matrices and its bioaccessibility. Curcumin–gelatin microparticles produced by electrohydrodynamic atomization were developed to overcome these problems. Microparticles with a size up to 1.2 μm in diameter, in which curcumin was in the amorphous state, were obtained. Both curcumin water solubility and bioaccessibility were significantly improved by encapsulation (38.6 and 11.3-fold higher than commercial curcumin, respectively). A gellified fish product was used to evaluate the coloring capacity of microencapsulated curcumin, finding a better dispersion for microencapsulated curcumin than for commercial one. However, curcumin bioaccessibility was similar owing to curcumin solubilization into the protein matrix. In spite of this, a protective effect of curcumin was observed, as the antioxidant activity of the bioaccessible fraction of the gel supplemented with microencapsulated curcumin was higher.Industrial relevanceCurcumin is a potential natural food coloring and functional ingredient which impairs an attractive yellowish-orange color to food and possesses a wide range of biological activities. However its use in food is restrained owing to its low solubility in water. Curcumin encapsulation using a soluble polymer is a promising strategy to widen the use of curcumin as an ingredient in the food industry.     

姜黄素的临床研究进展

姜黄素具有广泛的药理活性,其作为治疗多种疾病的潜力药物的研究正越来越多的引起关注。多个临床Ⅰ期试验已证实,姜黄素口服安全且耐受性好;药动学表明,姜黄素口服不易吸收,生物利用度低。研究显示,姜黄素治疗乳腺癌、结肠癌、肠易激综合征、风湿性关节炎及动脉粥样硬化等有疗效。现总结了姜黄素临床研究的报道,以冀为姜黄素的应用研究提供参考。     

花青素与姜黄素在食品包装领域的应用

花青素和姜黄素对于活性包装至关重要,探讨其内在机理,可为花青素、姜黄素智能包装膜的相关研究提供理论参考。本文综述了花青素、姜黄素的结构和性质、提取方法、抗氧化活性、花青素和姜黄素在食品包装上的应用以及两种色素混合在食品包装上的应用。花青素和姜黄素由于其自身结构特点,在不同的pH下有不同的颜色,花青素作为颜色指示剂变色范围广,但性质不稳定,易受到外界因素影响。姜黄素稳定性高于花青素,但变色范围窄。此外,两者均具有很好的抗氧化活性,可作为颜色指示剂与抗氧化剂应用在食品包装中。花青素和姜黄素的变色特点、稳定性以及功能活性对食品新鲜度指示包装的性能具有显著的影响,将两种色素混合作为指示剂添加到食品包装中,有助于提高花青素的稳定性,从而获得更好的指示效果。     

Bidirectional interactions between dietary curcumin and gut microbiota

Abstract

Curcumin is a polyphenolic compound with a long history of use as an herbal remedy, dietary spice, and food-coloring agent. Despite curcumin possesses a wide range of biological and pharmacological activities, it exhibits extremely poor bioavailability, which makes its pharmacology intriguing and also hinders its clinical application. In recent years, there is ample evidence supporting the associations between the alteration of gut microbiota and many diseases. Interestingly, after oral administration, curcumin shows its preferential distribution and accumulation in the intestine. In view of the above aspects, we reviewed the updated knowledge regarding the bidirectional interactions between curcumin and gut microbiota from two perspectives: (1) gut microbiota regulation by curcumin and (2) curcumin biotransformation by digestive microbiota. Besides the study deals with 3 potential pharmacological implications: (1) identification of metabolites being more active and bioavaliable than parent curcumin; (2) assessment of contribution of gut microbiota regulation of curcumin to its pharmacological effects and (3) development of gut microbiota regulation-based disease prevention/treatment strategy for curcumin in view of its clinical safety. This review is important to deepen our understanding of the mechanisms of action of curcumin and to provide future directions about how to use this natural compound to combat human diseases.     

Study on microencapsulation of curcumin pigments by spray drying

Curcumin has strong coloring power, safety and innocuity, comprehensive pharmacological function, but its low stability and water insoluble limit its application. Curcumin microcapsules were prepared by spray-drying process using porous starch and gelatin as wall material here. Results showed optimal condition as follows: the ratio of core and wall material of 1/30, embedding temperature of 70 °C, embedding time 2 h, inlet gas temperature of 190 °C, feed flow rate 70 mL/min and drying air flow 70 m³/h, at which the microencapsules had good encapsulation efficiency. The stability of microencapsulation curcumin against light, heat, pH was effectively improved and its solubility was increased greatly. This study would be helpful to the industrial application of curcumin.     

产品开发与应用技术--开启姜黄色素市场的"钥匙"

姜黄色素作为传统的食品着色剂应不断开发高档系列产品:高含量姜黄素、水/油溶姜黄色素、高档姜黄粉等,同时与食品企业紧密配合,搞好应用开发,方能不断扩大市场。     

Antimutagenicity of curcumin and related compounds against genotoxic heterocyclic amines from cooked food: The structural requirement

Curcumin (a major constituent of widely-used spice and colouring agent, turmeric) was found to be very effective in antagonising the S9-mediated mutagenicity of several food-derived heterocyclic amines. In order to understand the chemical basis of antimutagenic properties of curcumin against these mutagens, we have studied the structure–activity relationship between curcumin and its naturally-occurring derivatives, namely demethoxycurcumin and bisdemethoxycurcumin, and other structurally-related natural and synthetic analogues of curcumin, namely tetrahydrocurcumin, dibenzoylmethane, dibenzoylpropane, vanillin, ferulic acid, isoferulic acid and caffeic acid, using Ames Salmonella/reversion assay, against different classes of cooked food mutagens. We conclude that unsaturation in the side chain, a methoxy group on the benzene ring and a central β-diketone moiety in the curcumin molecule are the important structural requirements responsible for high antimutagenic potential of curcumin against cooked food heterocyclic amines.