紫苏保健饮料的研制与抗氧化功能研究

目的：研制含紫苏功能成分的保健饮料并评价其抗氧化功能。方法：市购新鲜紫苏叶经搅拌、打碎、酶解、酸浸、过滤、高压等处理获紫苏提取液,以此提取液配制饮料,通过正交设计与感官评分,确定出最佳配方。用不同剂量的紫苏饮料分别喂饮小鼠28d,摘眼球取血,用试剂盒测血清丙二醛(MDA)含量与超氧化物歧化酶(SOD)活力。结果：紫苏保健饮料能明显降低剂量组小鼠血清MDA 水平(p ＜ 0.05),提高血清SOD 酶活性(p ＜ 0.05)。结论：紫苏保健饮料具有抗氧化功能,可能具有延缓衰老的作用。     

紫苏油对大鼠降血脂的量效时效研究

为了研究紫苏油对大鼠降血脂功能的量效和时效,实验以高脂饲料造型高血脂大鼠,饲喂不同剂量的紫苏油饲料,分别建立血清甘油三酯值(TG)和血清总胆固醇值(TC)随时间(t)变化的函数,求解其降脂极限临界值TGlimit、TClimit,再利用求得的理论值与对应的剂量建立量效函数关系,并分别对求得的各组半数有效时间(即拐点时间tc)对应剂量的变化关系进行定性分析.结果发现,紫苏油能显著降低SD大鼠血清甘油三酯(TG)和胆固醇(TC),函数TC-t、TG-t符合S形曲线.但各组TG、TC均不能降低到空白组的水平.利用函数TC-t、TG-t求得的极限值TGlimit、TClimit分别建立它们与紫苏油剂量的经验方程,结果TGlimit-C符合Logistic方程,TClimit-C符合线性关系.同时对紫苏油降血脂的时效关系进行了探讨.     

紫苏油及大豆多肽合剂对高血脂症患者血脂的调节作用研究

本文研究含紫苏油88%和大豆多肽12%的降脂合剂对高血脂人群血脂的调节作用。实验结果表明:62例高血脂症患者服用紫苏油、大豆多肽降脂合剂30天后,血清总胆固醇(TC)含量显著降低(P<0.01);甘油三酯(TG)和低密度脂蛋白胆固醇(LDL-C)含量明显降低(P<0.05);高密度脂蛋白胆固醇(HDL-C)含量明显升高(P<0.05);LDL-C/HDL-C值降低。由此可知:紫苏油、大豆多肽降脂合剂具有降血脂功能。     

蛋黄油体内降血脂生物活性研究

目的:研究蛋黄油对小鼠血清中总甘油三酯(TG)、总胆固醇(TC)和高密度脂蛋白胆固醇(HDL-C)含量的影响;方法:采用不同剂量的蛋黄油灌服雄性昆明种小鼠;结果:与正常对照组相比,蛋黄油能显著降低小鼠血清中总甘油三酯(TG)和总胆固醇(TC)的含量,提高小鼠血清中高密度脂蛋白胆固醇(HDL-C)含量;结论:蛋黄油具有降血脂的作用.     

降胆固醇乳酸菌的筛选及其降胆固醇活性研究

为了得到一株高效降胆固醇的乳酸菌并研究其降胆固醇的特性,本研究通过体外筛选得到一株降胆固醇能力为41.87%的乳酸乳球菌乳亚种Q,并用该乳酸菌发酵酸奶饲喂高脂模型大鼠,研究其对血清总胆固醇(TC)、血清甘油三酯(TG)、血清高密度脂蛋白(HDL-C)、血清总胆酸(TBA)、肝脏总胆固醇(TC)、粪便总胆固醇(TC)、粪便总胆酸(TBA)以及体重和肝、肾、脾重量的影响.结果发现28d后,实验组大鼠血清中TC、TG、TBA和肝脏中TC含量明显下降(P＜0.05),粪便中TC和TBA含量也降低.各组间大鼠的HDL-C、体重、肝重/体重、肾重/体重、脾重/体重无显著差异.     

降胆固醇乳酸菌的筛选及其降胆固醇活性研究

为了得到一株高效降胆固醇的乳酸菌并研究其降胆固醇的特性,本研究通过体外筛选得到一株降胆固醇能力为41.87%的乳酸乳球菌乳亚种LQ-12,并用该乳酸菌发酵酸奶饲喂高脂模型大鼠,研究其对血清总胆固醇(TC)、血清甘油三酯(TG)、血清高密度脂蛋白(HDL-C)、血清总胆酸(TBA)、肝脏总胆固醇(TC)、粪便总胆固醇(TC)、粪便总胆酸(TBA)以及体重和肝、肾、脾重量的影响。结果发现28d后,与高脂模型组相比,实验组大鼠血清中TC、TG和TBA含量明显下降(p<0.05);粪便中TC含量升高,而TBA含量降低;肝重/体重显著降低。各组间大鼠的HDL-C、体重、肾重/体重、脾重/体重无显著差异。     

岩藻黄素微囊粉对C57BL/6J小鼠胆固醇代谢的影响

本实验以C57BL/6J小鼠为实验对象,通过建立高血脂模型,喂食不同剂量的岩藻黄素微囊粉,测定了小鼠血清和肝脏中总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL-C)和低密度脂蛋白胆固醇(LDL-C)的含量,并利用RT-PCR法探讨了岩藻黄素微囊粉对小鼠体内胆固醇代谢的调控作用机制。结果表明岩藻黄素微囊粉能有效降低肝脏中的TC、TG和LDL-C的含量,增加HDL-C的含量;降低血清中TG的含量,增加清血清中HDL-C的含量,同时增加了小鼠粪便中粗脂肪和胆固醇的含量,但在代谢过程中却并没有降低血清中的TC含量。RT-PCR结果显示岩藻黄素微囊粉调节胆固醇代谢的作用机制可能与其能够抑制HMG-COA-R、CYP7A1、LXRα、ABCA1和ACAT2等基因的表达,促进SREBP2、LCAT以及LDLR等基因的表达有关。     

红花籽油和紫苏籽油不同配比降血脂作用研究

探讨红花籽油和紫苏籽油不同配比的降血脂作用。将正常小鼠60只随机分为空白组、红花籽油、紫苏籽油、红花籽油与紫苏籽油配比1. 18∶1、2. 59∶1、5. 42∶1组;将正常大鼠48只随机分为空白组、红花籽油与紫苏籽油配比0. 47∶1、2. 59∶1、4. 01∶1、5. 42∶1、8. 25∶1组;空白组给予生理盐水,其余组给予对应配比的油,灌胃量10 mL/kg。灌胃30 d后,小鼠取血,大鼠取血及肝脏,检测总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)含量。结果表明:与空白组比,小鼠TG、TC含量红花籽油与紫苏籽油配比2. 59∶1组、5. 42∶1组均显著降低,2. 59∶1组LDL-C含量显著降低,2. 59∶1组、5. 42∶1组HDL-C含量显著升高。与空白组相比,大鼠血清TG、TC含量红花籽油与紫苏籽油配比0. 47∶1组、2. 59∶1组显著或极显著降低,0. 47∶1组、2. 59∶1组LDL-C含量显著降低,2. 59∶1组HDL-C含量显著升高。与空白组相比,大鼠肝脏TC含量红花籽油与紫苏籽油配比0. 47∶1组、2. 59∶1组显著或极显著降低,2. 59∶1组和4. 01∶1组TG含量极显著或显著降低,0. 47∶1组、2. 59∶1组LDL-C含量显著降低。红花籽油和紫苏籽油不同配比对正常动物血脂具有降低作用,其中红花籽油与紫苏籽油配比2. 59∶1组降血脂作用最明显。     

不同燕麦品种对大鼠胆固醇代谢的影响

为研究不同燕麦品种对饲喂高脂饲料大鼠胆固醇代谢的影响,将40只雄性Wistar大鼠按照平均血脂水平和平均体重分为4组,即高脂对照组和3个燕麦组。喂食第0、10、20和30 d时分别测定大鼠血清总胆固醇(TC)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)和三酰甘油(TG)水平;试验结束时测定大鼠肝脏TC、胆固醇酯(CE)、游离胆固醇(FC)、TG和粪便TC、胆汁酸(BA)、脂肪含量。β-葡聚糖含量不同的燕麦品种都显著降低了血清和肝脏TC含量(P0.05),并促进了粪便胆汁酸排泄,而对血清HDL-C、TG和肝脏TG含量没有显著影响。以上结果表明摄入不同品种燕麦均能够通过促进粪便中胆汁酸的排泄来降低大鼠血清TC和LDL-C水平,及肝脏中TC和CE水平。     

海豹油对高脂血症大鼠和正常大鼠血脂的影响

分别建立高胆固醇血症和高甘油三酯血症大鼠模型,经口给予海豹油,研究海豹油对两种模型大鼠血脂的干预作用,同时研究海豹油对正常大鼠血脂的影响。结果表明:对于高胆固醇血症大鼠,海豹油降低了大鼠血清TG、TC和LDL-C含量,高剂量组(0.67 g/kg)大鼠血清HDL-C含量显著升高(p <0.05),各剂量组大鼠血清HDL-C与TC比值均极显著升高(p <0.01);对于高甘油三酯血症大鼠,海豹油降低了大鼠血清TG和TC含量,并使血清HDL-C与TC比值极显著升高(p <0.01);对于正常饲养的大鼠,海豹油对大鼠的体重、食物利用率、脏器系数以及血清生化指标均无显著影响。综上,经口给予高胆固醇血症或高甘油三酯血症大鼠海豹油,可有效降低两种模型大鼠血清TC和TG含量,而经口给予正常饲养大鼠海豹油,不会对正常大鼠的体重、摄食、血清生化指标以及各种脏器造成影响。     

蛋白质水解度测定方法综述

对目前国内外常用的蛋白质水解度测定方法进行了综述，其中pH—state方法是通过滴定水解过程中释放的质子测定DH；OPA、TNBS及国内常用的水合茚三酮和甲醛等测定方法是利用游离氨基的反应测定DH。     

SEROLOGIC IDENTIFICATION OF SPECIES OF ORIGIN OF SAUSAGE MEATS

SUMMARY: A partially purified immunoglobulin G (lgG) solution prepared from the serum of species to be tested was heated to the specifications for sausages. The resulting supernatant fluid was decanted and the precipitate washed with saline and used to immunize rabbits. The supernatant fluid was used to sensitize tanned sheep red blood cells. The immune serum was rendered monospecific by absorptions with heterologous, heated lgG precipitates. A sample of monospecific immune serum was absorbed with a washed homogenate of sausage. Aliquots of the monospecific immune serum, both untreated and sausage absorbed, were tested with cells sensitized with the homologous heated lgG supematant fluid. A significant reduction of titer by sausage absorption indicated that the sausages contained the meat homologous to the immune serum.     

聚多元羧酸盐的合成及应用

研究了聚多元羧酸盐的合成方法及反应机理,将其应用于洗涤剂和PVC制品中分别代替三聚磷酸钠和邻苯二甲酸二丁酯,证明有良好效果。     

BASIS OF STABILITY OF AMINE SALTS OF LINOLEIC ACID

SUMMARY— The mechanism and generality of the known stabilization against autoxidation conferred on linoleic acid by certain basic amino acids, such as lysine and arginine, was investigated. Basic amino acids were the only class of compounds found to confer the effect. However, the smallest basic amino acid, 2,3-diaminopropionic acid, was not effective, nor was αβω-diaminc acid, 3,6-diaminohexanoic acid, although a simple isomer of lysine. The stabilization was observed only in the solid phase. Inclusion of sodium chloride in the solid matrix was deleterious to the effect. A large number of physical and chemical observations were made and correlated but it has not been possible to draw detailed conclusions about the mechanism of stabilization, nor can a detailed structure of the stabilized complex be suggested. The cause of the phenomenon appears to be closely associated with the physical arrangement of the ions in the crystal lattice.     

STABILITY OF AQUEOUS EMULSIONS OF THE ESSENTIAL OIL OF HOPS

Hop oil emulsions prepared from different varieties of hops have been found to exhibit enhanced physical stability on the addition of blends of the emulsifiers Span 20/Tween 80 or Span 60/Tween 60. Examination of the particle size and volume distributions of an emulsion by use of a Coulter Counter was found to be an excellent method of monitoring its stability. An indication as to the relative efficiency of emulsifiers can be obtained from Coulter Counter measurements on hop oil emulsions after storage for 4 days. The use of an ultracentrifuge provies a rapid means of testing emulsion stability and hence the effectiveness of emulsion stabilizers.     

百年风尚

一场流光溢彩、赏心悦目的展览,一段百年风尚演进的传奇旅程,一次东西方文化艺术的完美对话。2013年9月13日,“博萃臻艺一中西方珍宝艺术展”在辽宁省博物馆举行了隆重的开幕仪式,法兰西共和国驻华大使白林女士、辽宁省文物局局长丁辉先生、辽宁省博物馆馆长马宝杰先生、卡地亚全球总裁兼首席执行官邓阁仕先生、卡地亚区域行政总裁（北亚洲）陆慧全先生、卡地亚中国区首席执行官陆意斯先生、辽宁省文物店总经理张春鹰先生,以及众多文化界与文博界的贵宾齐聚一堂,共同见证了这场文化艺术盛事。     

ANALYTICAL CHARACTERIZATION OF THE PRODUCTS OF NONENZYMATIC GLYCOSYLATION OF LYSOZYME

The quantitative analysis of the reaction products of the water activity dependent nonenzymatic glycosylation of lysozyme was not straightforward. Difficulties arose in the determination of the number of bound glucose molecules because glycosylation leads to glucose mediated protein aggregation, and the likely presence of a mixture of relatively labile Schiff-base intermediates, and the more stable ketoamine products generated by Amadori rearrangement. Polyacrylamide gel electrophoresis was used to monitor protein aggregation; periodate oxidation, nuclear magnetic resonance (NMR), and oxalic acid hydrolysis combined with HPLC, emerged as the most promising methods to quantitate the degree of glycosylation. Possible interpretations are advanced to explain the apparent discrepancies in degree of glycosylation suggested by the different analytical methods evaluated.     

EFFECTS OF TYPES OF FAT AND OF RATES AND TEMPERATURES OF COMMINUTION ON DISPERSION OF LIPIDS IN FRANKFURTERS

ABSTRACT— The effect of time, temperature and rpm of comminution of emulsions was determined on the dispersion of approximately 25% of beef fat, pork fat or cottonseed oil in frankfurters. The numbers of lipid particles 5 μ or less in diameter increased in frankfurters containing either beef or pork fat as comminution was continued to higher temperatures, with pork fat dispersed more thoroughly. Fat tended to separate from frankfurters containing beef fat in particles 200 μ or more in diameter. In contrast, no specific degree of dispersion of particles 5 μ or less in diameter consistently indicated emulsion stability, or its lack. Increased rpm during comminution produced an increased dispersion of beef or pork fat. Under the same conditions pork fat was dispersed more finely than beef fat. Dispersion of cottonseed oil produced finely dispersed particles beyond the resolution of light microscopy, as was confirmed by electron microscopy which showed a substantial number of particles to be less than 1 μ in diameter.     

DEVELOPMENT OF CHAINS OF CELLS OF SACCHAROMYCES CEREVISIAE DURING FERMENTATION

The lengths of chains of cells of Saccharomyces cerevisiae were studied during fermentation. Pitching yeast generally contained about half of the total number of cells as two-celled chains. The chain lengths varied during the subsequent fermentation and the variations were characteristic of the strain. Electronic counting assessments of chain length were unreliable.     

矩阵乘积的行式,列式

给出了ｍ×ｍ矩阵与ｍ×ｎ矩阵的行（列）式的表达式．若Ａ＝ａ１１ａ１２…ａ１ｍａ２１ａ２２…ａ２ｍ……ａｍ１ａｍ２…ａｍｍＢ＝ｂ１１ｂ１２…ｂ１ｎｂ２１ｂ２２…ｂ２ｎ……ｂｍ１ｂｍ２…ｂｍｎ分别是ｍ×ｍ，ｍ×ｎ矩阵，则｜Ａ｜｜Ｂ｜＝｜ＡＢ｜＋∑ｉ１＜ｉ２＜…＜ｉｔｊ１＜ｊ２＜…＜ｊｔ１≤ｔ≤ｍｎ－ｔ≥ｍＮＢｉ１ｉ２…ｉｔｊ１ｊ２…ｊｔＮＡＢ１…ｍ（－１）ｓｔ＋１ｊｔ＋１…（－１）ｓｎｊｎ其中ｉ１，ｉ２，…，ｉｔ是１，２，…，ｍ中ｔ个数码；ｊ１，ｊ２，…，ｊｔ，ｊｔ＋１，…，ｊｎ是１，２，…，ｎ的一个排列；ｓｒ＝π（ｊ１，ｊ２，…，ｊｔ，ｊｒ）（ｒ＝１，２，…，ｎ）是排列ｊ１，ｊ２，…，ｊｔ，ｊｒ的反序数．