莲房原花青素对60Co-γ射线致免疫器官损伤的防护作用

目的：研究莲房原花青素（LSPC）对^60Co-γ射线致小鼠脏器损伤的影响。方法：给小鼠连续灌胃不同剂量的LSPC15d后，接受剂量4．0Gy ^60Co-γ射线照射后，于第3d处死小鼠，测定脏器增长指数并进行形态学观察。结果：小鼠经4．0Gy ^60Co-γ一次全身辐照后，100、200mg／kg bw LSPC组能使小鼠脾脏和胸腺增长指数明显提高，且与辐射对照组间有显著性差异（分别为P〈0．01和P〈0．05）。LSPC可不同程度的保护或恢复^60Co-γ射线致小鼠的脾脏、胸腺的损伤。结论：LSPC对4．0Gy ^60Co-γ射线亚慢性辐射致免疫器官损伤有一定的保护作用。     

菱灵颗粒有效成分的抗肿瘤作用研究

目的：研究菱灵颗粒有效成分-化合物Ⅰ在体外对Hela细胞的作用及其作用机制。方法：采用四甲基偶氮唑盐（MTT）还原法检测化合物Ⅰ对肿瘤，L长抑制作用，应用光学显微镜、透射电子显微镜观察细胞形态，流式细胞仪检测细胞周期及细胞凋亡情况。结果：化合物Ⅰ对人宫颈癌细胞生长具有明显的抑制作用及诱导细胞凋亡作用，且这种作用有剂量依赖关系，化合物Ⅰ25、12．5、6．25mg／L剂量组30h抑瘤率为52．04％、34．44％、23．72％，100、50、25、12．5、6．25、3．125mg／L剂量组30h抑瘤率显著正相关，相关系数r=0．9860（p〈0．01），IC50值为10．9mg／L。透射电子显微镜对化合物Ⅰ25、12．5、6．25mg／L剂量组受试细胞观察，均出现不同程度细胞凋亡现象，细胞核明显皱缩、染色质趋边凝聚、线粒体空化等特征。流式细胞仪检测发现凋亡峰。结论：化合物Ⅰ对Hela细胞增殖抑制作用明显并且有诱导细胞凋亡作用。     

莲原花青素抗黑色素瘤的研究

目的：探讨莲房和莲子壳中原花青素对黑色素瘤B16 生长的影响。方法：采用MTT 法测定莲房和莲子壳原花青素对B16 细胞的体外抑制作用;并借助显微技术观察B16 细胞形态;以荷黑色素瘤的C57BL/6J 小鼠为体内研究对象,通过瘤体积和瘤重测定,探讨体内抑瘤作用,采用黄嘌呤氧化酶法和硫代巴比妥酸法测定荷瘤鼠血清中超氧化物歧化酶(SOD)和丙二醛(MDA)含量。结果：莲房和莲子壳中原花青素体外对黑色素瘤B16 细胞均有较强的抑制作用,抑制率分别为87.4% 和78.2%,均使细胞的膜破损,细胞形态改变;体内能显著减小瘤体积和减轻瘤重,抑瘤率分别为55.3% 和46.7%,并能有效降低荷瘤小鼠血清中MDA 含量,提高SOD 活力。结论：莲房和莲子壳中原花青素对黑色素瘤均具有较强的抑制作用。     

灰树花菌丝体糖肽GFPSlb体内抗肿瘤作用的研究

采用移植型小鼠黑色素瘤B16模型进行试验,研究灰树花菌丝体糖肽GFPS1b的体内抗肿瘤作用.结果表明,灰树花菌丝体糖肽GFPS1b对移植型小鼠黑色素瘤B16有显著的抑制作用,抑瘤率在30%以上;样品作用组瘤体积生长速率比阴性对照组慢,且瘤体积小;同时能延长荷瘤小鼠的存活期;HE染色结果表明,GFPS1b中、高剂量组能使B16肿瘤细胞呈团索状实性排列或弥漫性分布,并有肿瘤细胞大片坏死,坏死区周围可见凋亡细胞;免疫组化技术进一步显示,GFPS1b能诱导瘤组织中Bax基因蛋白表达,同时也能显著下调Bcl-2蛋白的表达.研究表明,GFPS1b对小鼠移植性肿瘤有显著的抑瘤作用.     

霍山石斛多糖对Lewis肺癌荷瘤小鼠肿瘤生长的抑制作用

该研究探讨了霍山石斛多糖（cDHP）对Lewis肺癌荷瘤小鼠肿瘤生长的抑制作用。用Lewis肺癌细胞建立肺癌荷瘤小鼠模型,观测cDHP对小鼠生长情况、肿瘤体积、抑瘤率和脾淋巴细胞增殖能力的影响,并测定肿瘤细胞凋亡比例、脾脏免疫细胞（T细胞、Treg细胞、B细胞、树突状细胞和巨噬细胞）比例及血清细胞因子（CEA、IL-1β、IL-10、IL-2、TNF-α、VEGF和TGF-β）含量的变化。cDHP高369.00 mg/(kg•d)、中184.50 mg/(kg•d)、低92.25 mg/(kg•d)剂量组的抑瘤率分别为64.52%、50.47%、37.68%。cDHP的抗肿瘤作用表现在其能够提高荷瘤小鼠肿瘤细胞凋亡比例、改善荷瘤小鼠脾淋巴细胞增殖能力、调节荷瘤小鼠脾脏免疫细胞比例和血清细胞因子的平衡。cDHP可通过不同方式影响肿瘤生长,结果为霍山石斛的开发利用提供了实验依据。     

莲房原花青素抗氧化损伤作用的研究

观察莲房原花青素（LSPC）对肝脂质过氧化损伤的作用。方法（1）体外大鼠肝匀浆温度，Fe^2 ,H2O2衣导引起肝脂质过氧化物（LPO）含量变化；（2）小鼠连续口服不同剂量LSPC7d后，一次性灌胃5％CCl4油溶液10ml/kgbw,24h后检测肝与血浆中超氧化物歧化酶（SOD）和脂质过氧化物（LPO）含量。结果：不同剂量LSPC明显抑制体外肝组织LPO产生；口服中，低剂量LSPC则能显著降低CCl4中毒小鼠体内LPO含量，提高SOD活性。结论：适量LSPC具有抗氧化损伤作用，可能具有护肝功能。     

超临界CO_2流体萃取生姜姜辣素的抗氧化活性研究

本实验用超临界CO2流体萃取的方法从生姜中提取姜辣素,通过三种不同的自由基体系和小鼠B16黑色素瘤细胞模型研究了生姜姜辣素的抗氧化活性。超临界CO2流体萃取制得的生姜油中姜辣素的含量为263.42mg/g。体外抗氧化实验结果表明,在一定浓度范围内,与维生素C相比,生姜姜辣素同样具有较强的抗氧化能力。同时,细胞实验说明,生姜姜辣素能够抑制小鼠B16黑色素瘤细胞的生长。从形态学观察,随着姜辣素浓度的升高,对小鼠B16黑色素瘤细胞的生长抑制情况越明显;MTT实验中,随着姜辣素浓度的升高和时间的延长,其对小鼠B16黑色素细胞的抑制作用越大;流式细胞仪检测浓度为50μg/m L的生姜姜辣素可使小鼠B16黑色素瘤细胞产生凋亡。     

莲房原花青素对小鼠S180肉瘤及其免疫功能影响的研究

目的：探讨莲房原花青素（LSPC）对S180肉瘤小鼠及免疫功能的影响。方法：采用称重方法来讨论LSPC对小鼠S180肉瘤的抑制作用；采用小鼠碳廓清单核巨噬细胞吞噬功能测定法、迟发型超敏反应及血清溶血素测定方法，研究LSPC对荷S180肉瘤小鼠免疫功能的影响；结果：LSPC可抑制小鼠S180肉瘤生长、提高免疫器官的增长指数；能显著增强荷瘤小鼠巨噬细胞的吞噬功能、DNFB所致迟发型超敏反应以及抗体生成的能力。结论：初步证明LSPC对小鼠S180肉瘤的抑制作用与其增强荷瘤小鼠免疫功能有关。     

龙须菜藻红蛋白对Hela细胞增殖抑制及其机制的研究

目的：探讨龙须菜藻红蛋白（PE）对人宫颈癌细胞Hela体外的抑制作用及其作用机制。方法：采用MTT法检测不同浓度的藻红蛋白对Hela细胞增殖抑制效果。流式细胞仪和Annexin V-FITC/PI双荧光染色法观察藻红蛋白对Hela细胞周期及细胞凋亡的影响。结果：PE可显著抑制Hela细胞的生长，并呈剂量-效应关系（p〈0.01，r=0.84），剂量为20μg/ml，作用48h，其抑制率达70.88%，其48h的IC50值为4.12μg/ml。PE可阻滞Hela细胞从G2/M期进入S期，诱导细胞凋亡。结论：PE对Hela细胞有较强的抑制作用，其作用机制部分与诱导Hela细胞调亡有关。     

牛磺酸对顺铂所致H22荷瘤小鼠免疫器官及淋巴细胞损伤的保护作用

目的：研究牛磺酸对顺铂化疗荷瘤小鼠免疫器官和淋巴细胞损伤的保护作用。方法：H22荷瘤小鼠随机分为5 组：模型对照组、顺铂（1.5 mg/（kg·d））化疗组、顺铂＋高剂量（640 mg/（kg·d））牛磺酸组、顺铂＋中剂量（320 mg/（kg·d））牛磺酸组和顺铂＋低剂量（160 mg/（kg·d））牛磺酸组,末次用药24 h后眼球放血处死小鼠,测定小鼠体质量、瘤质量、脾脏指数、胸腺指数以及血清白细胞介素-2（interleukin-2,IL-2）、肿瘤坏死因子-α（tumor necrosis factor-α,TNF-α）、干扰素-γ（interferon-γ,IFN-γ）水平,胸腺依赖性淋巴细胞（thymusdependent lymphocyte,T细胞）、骨髓依赖性淋巴细胞（bone marrow dependent lymphocyte,B细胞）增殖能力的变化情况。结果：顺铂化疗组小鼠体质量和瘤质量均明显低于模型对照组,抑瘤率为36%,顺铂＋中、高剂量牛磺酸组小鼠的体质量显著高于顺铂化疗组,抑瘤率分别达到51%和68%;顺铂化疗组小鼠的脾脏质量和脾脏指数明显低于模型对照组,而顺铂＋各剂量牛磺酸组小鼠的脾脏质量和脾脏指数均高于顺铂化疗组;顺铂化疗组小鼠的胸腺质量和胸腺指数明显低于模型对照组,顺铂＋高剂量牛磺酸组小鼠的胸腺质量和胸腺指数明显高于顺铂化疗组;顺铂化疗组小鼠血清IL-2、IFN-γ和TNF-α的分泌水平明显低于模型对照组（P＜0.01）;而顺铂＋各剂量牛磺酸组血清IL-2、IFN-γ和TNF-α的水平均高于顺铂化疗组;顺铂可明显抑制荷瘤小鼠对丝裂原刺激的T细胞和B细胞的增殖,顺铂＋高剂量牛磺酸组小鼠的T细胞刺激指数明显高于顺铂化疗组（P＜0.05）;而顺铂＋低、中剂量牛磺酸组小鼠的B细胞刺激指数则高于顺铂化疗组。结论：牛磺酸可协同顺铂发挥抑制肿瘤的作用,其机制与保护顺铂导致的动物免疫器官和淋巴细胞功能损伤有关。     

Review of techniques to manufacture micro-hydrogel particles for the food industry and their applications

Microgels are ‘soft’ microscopic cross-linked polymeric particles that are being increasingly exploited in a variety of industries for rheology control, encapsulation and targeted delivery. They are valued because of the ability to tune their functionality to address specific applications in oil recovery, coatings, drug delivery, cosmetics, personal care and foods. Food microgels are typically biopolymer hydrogels in the form of microspheres, nanospheres (also called nanogels), spheroids and fibres. The utilisation of engineered microgels in foods has so far been limited, despite their great potential to address several needs in the food industry, including: satiety control, encapsulation of phytonutrients and prebiotics, texture control for healthier food formulations (e.g. reduced fat products), and targeting delivery to specific areas in the digestive tract. We review the scientific and patent literature on the utilisation and manufacturing methods for producing microgels with an emphasis on micro-hydrogels for food applications.     

12—A CRITIQUE OF SOME HYPOTHESES RELATING TO THE HETEROGENEITY OF THE HIGH-SULPHUR PROTEINS OF WOOL

Joubert and Burns prepared a large number of fractions from the high-sulphur proteins of wool and estimated their molecular weights and amino-acid compositions. Their data have been re-examined in order to look for statistically significant interrelations between amino acids and between the proportion of various amino acids and molecular weight. Statistical analysis of the data is also used to examine the credibility of some hypotheses concerning the mechanism of keratin biosynthesis and to provide further evidence for the existence of families of proteins within the high-sulphur fractions of wool.     

Announcing a new international peer-reviewed journal:Food Science and Human Wellness now accepting manuscript submission in English

<正>We are pleased to announce the launch of a new international peer-reviewed journal-Food Science and Human Wellness,ISSN 2213-4530,which is an open access journal,produced and hosted by Elsevier B.V.on behalf of Beijing Academy of Food Sciences.Food Science and Human Wellness is an international peer-reviewed English journal that provides a forum for the dissemination of     

The Latest Data about Development of Chinese Printing Industry in 2013

In the 2014 China（Shanghai）International Printing Week,Director Wang Yanbin released the latest data about development of Chinese printing industry in 2013.According to statistics,in 2013,the total output value of Chinese printing industry exceeded 1trillion Yuan for the first time,reaching 1.03985 trillion Yuan.There were 105,000 printing enterprises in China,employees were 3.415 million.The total asset was 1.06247 trillion Yuan;     

The State Council Issued "Directory of Government Approved Investment Projects(2013 Edition)"

正On December 2nd,2013,the State Council issued the notification of"Directory of Government Approved Investment Projects(2013 Edition)"(hereafter referred to as"notification").It is pointed out in the"notification"that in order to further deepen reforms in investment systems and administrative examination and approval systems,simplify administrative procedures and delegate powers to lower levels,earnestly     

China textile machinery: taking off in progress

正Among the 1600 exhibitors who take apart in the ITMA ASIA+CITME2014 2/3 are Chinese manufactures.If the numerous figures failed to attract your attention,the increase of quality should draw your focus.To adopt the demand of developing textile machine market,domestic textile machinery enterprises now follow the slogan of"technology drives development"to enhance product competitiveness.Our domestic sellers will showcase product ranging from spinning,weaving,dyeing and printing,     

Top Ten News of China's Paper Industry 2013

On December 24th, 2013, the meeting on the selection of top 10 news of China＇s paper industry 2013 sponsored by 〈China Paper Newsletters〉 was held in Beijing. The yearly selection of the top l0 news, which began in 2000, has become a brand activity widely recognized in the industry thanks to the support from the authorities at all levels and public participation.     

National Development and Reform Commission Issued Announcement for Selection of Major Preliminary Research Projects for the "13~(th) Five-Year Plan"

In Apri Commi major p Plan＂ （h 2014, the National Development and Reform ssion issued an announcement for selection of reliminary research projects for the ＂13th Five-Year ereafter referred to as ＂The Announcement＂）     

Announcing a new international peer-reviewed journal:Food Science and Human Wellness now accepting manuscript submission in English

<正>We are pleased to announce the launch of a new international peer-reviewed journal-Food Science and Human Wellness,ISSN 2213-4530,which is an open access journal,produced and hosted by Elsevier B.V.on behalf of Beijing Academy of Food Sciences.Food Science and Human Wellness is an international peer-reviewed English journal that provides a forum for the dissemination of the latest scientific     

Contamination of animal feed and food from animal origin with mineral oil hydrocarbons

Oils and fats used for the production of animal feed can become contaminated with mineral oil material originating from gas oils (C₁₈-C₃₅) or synthetic oils (poly alpha olefins, C₂₅ to beyond C₄₅). An important cause is assumed to be the discharge of waste oils, such as motor oil and hydraulic oils. Mineral oil material was analysed by on-line LC-GC-FID directly in the fat or in a raw extract from animal feed or foodstuffs. In Switzerland in summer/autumn 1999 concentrations in oils and fats for feed production were often found to be between 100 and 1000mg/kg. In the feeds, the average concentration was around 100mg/kg with values ranging up to a maximum of 1000mg/kg; few samples were free of contamination. In animal body fat, the average concentration determined in summer 1999 was 25mg/kg, with a maximum of 150mg/kg, although in samples from December 1999, contamination was substantially lower. In the fat phase of eggs, the average concentration was 30mg/kg, with a maximum of 80mg/kg. Paraffin oil is used for feed production, which may account for part of the contamination problem (e.g. eggs).