Abstract:研究了油茶肉质果和肉质叶营养成分及食用安全性。成熟的肉质果（叶）各成分质量分数分别为：水分91．36％（91．58％）、蛋白质7．81％（6．56％）、脂肪3．7％（2．90％）、还原糖30．41％（21．83％）、总糖37．23％（29．28％）、茶皂素2．44％（1．46％）、灰分3．45％。（4．55％）、酸度0．35％（0．46％）。测定的矿物元素中，肉质叶、果的钙含量分别为411．3mg、359mg；锰的含量分别为31．35mg和33．06mg；含有16种氨基酸；所测的6种维生素中，维生素C和叶酸含量较高。毒性试验结果显示，样品为无毒野生果。微核试验和致畸试验结果表明：小鼠微核率与对照组比较，差异不显著（P〉0．05）。小鼠精子致畸率与阳性对照组比较无显著差异（P〉0．05）。样品对金黄色葡萄球菌抑制效果明显。该野生果基本无毒、无致突变物质，证明油茶肉质果、肉质叶是一种食用安全的野生果和食品资源。

Abstract:Diffusion reflectance FTIR spectroscopy in the mid-IR region combined with principal component analysis have been applied for classification tea from different cultural area,including two green teas(Biluochun from Suzhou and Longjing from Zhejiang),one bl

Abstract:用毛细管电泳-电化学检测的方法分析了苦荞麦芽中黄酮类物质,测定了表儿茶素、芦丁、槲皮素的含量。以直径为300μm的碳圆盘电极为工作电极,50 mmol/L硼砂溶液(pH=8.5)为运行缓冲液,对上述3组分的分离检测条件进行优化研究。在优化条件下,3组分可在12 min内完全分离,检出限分别为1.83×10-7,2.9×10-8,1.00×10-7g/L。并运用此法对自助生产的两种苦荞麦芽样品中的黄酮类物质进行跟踪测定,研究了萌发时间对其中营养成分的影响。

Abstract:利用连续式酶反应器(CSTR)、固定化脂肪酶催化合成麦芽糖月桂酸酯。确定了连续生产工艺的最佳条件:在丙酮介质中,起始反应器中麦芽糖的浓度为50 mmol/L,月桂酸浓度为200mmol/L,加酶量为10 g,每天添加4 g麦芽糖,200 mmol/L的月桂酸丙酮溶液以0.15 mL/min进入反应器。本反应器的麦芽糖酯产量可以达到12.32 g/(L.d),麦芽糖的转化率为58%,高于间歇式生产,而且在生产中不需要添加分子筛。研究了产物的分离纯化方法,利用正己烷对产物进行3次洗涤、离心处理,得到的产物麦芽糖月桂酸酯纯度达到94.16%。

Abstract:纯化的黑曲霉Aspergillus niger WM20-11所产的酸性β-甘露聚糖酶经Sephadex G-100凝胶过滤层析和SDS-PAGE分别测得相对分子质量为39 000和40 000;IEF-PAGE测得酶的等电点为4.0;最适作用pH值和温度分别为3.5和70℃;糖质量分数19.6%;Mg2 、Ca2 、Li 、Na 、K 对酶有激活作用,Pb2 、Co2 、Fe3 、Mn2 、Hg2 对酶有抑制作用;酶对角豆胶的Km和Vmax分别为66.7 g/L和333μmol/(min.mg);酶蛋白的氨基酸组成中Asp和Glu含量最高;HPLC分析角豆胶酶水解液的主要产物是低聚糖。

Abstract:采用小鼠热板法和小鼠醋酸扭体法对由不同蛋白酶(碱性蛋白酶、胰蛋白酶、胃酶、胰酶、中性蛋白酶和复合蛋白酶)水解制备的小麦面筋蛋白短肽的镇痛活性进行了测定。结果表明,由碱性蛋白酶、胃酶、胃酶和胰酶复合水解制备的3种面筋蛋白短肽(AWGH、PWGH和PPWGH)具有较好的镇痛作用。在小鼠热板法实验中,其痛阈提高百分率分别为(77.78±13.82)%、(81.22±9.69)%和(79.78±22.77)%;在小鼠醋酸扭体实验中,其扭体抑制率分别为(38.25±2.98)%(、57.82±3.04)%和(52.43±3.87)%。

Abstract:In this manuscript,the optimal salt concentration for IgY purification by two-steps procedure using salt precipitation was determined.The optimum IgY recovery(46%) and purity(77%) were achieved by precipitation with 50% saturation ammonium sulfate followe

Abstract:以刺五加嫩叶和鲜牛乳为主要原料，杀茵后接种乳酸茵进行乳酸发酵，在此基础上添加各种辅料制成发酵乳饮料，通过单因素试验及正交试验确定原料的配比、发酵条件及产品的配方，所得产品各项指标符合国家要求，色泽淡绿乳色，酸甜适中，口感细腻，香味浓郁。

Abstract:Sweet potato glycoprotein(SPG) was obtained from the cultivar GuangDong 98 by water extraction,alcohol precipitation and gel filtration.Scavenging effects of SPG on superoxide radical and hydroxyl free radical were studied,and the protective effects on H2

Abstract:研究了经DEAE-纤维素离子交换柱分离的富锌液态发酵姬松茸胞内多糖组分对小鼠肝癌实体型Heps的体内抑制效果,同时考察了柱层析过后各组分中锌元素的分布情况及给药后小鼠血清锌的变化情况。分离所得组分MP-2在5 mg/(kg.d)剂量下抑瘤率为59.5%(p<0.001),MP-3在10 mg/(kg.d)剂量下抑瘤率为68.1%(p<0.001),两样品在10 mg/(kg.d)剂量下均能使小鼠脾指数显著提高。组分MP-2含锌率3.38‰、MP-3含锌率2.46‰,远高于组分MP-1的含锌率0.12‰;注射样品MP-2、MP-3的实验组小鼠血清锌浓度皆显著高于不给予富锌样品的阴性对照组(p<0.05)。

Abstract:提供了预富集-石墨炉原子吸收光谱法测定药食两用中药浸泡液中的痕量镉的新方法。采用吡咯烷二硫代氨基甲酸铵(APDC)作配位剂,在pH 5.0-8.0的条件下,用固体硅胶捕集、抽滤分离Cd-APDC配合物,然后用1 moL/L盐酸从膜滤纸上洗下硅胶,得到能够直接用石墨炉原子吸收光谱法测定的镉悬浊液。该法简便快速,富集100倍时的特征质量为2.8×10-14g。用此方法测定4药食两用中药浸泡液中的痕量镉,当n=5时,标准偏差为0.002 5-0.005 8,RSD为:0.012-0.052,样品的加标回收率为91.8%和111.1%,结果较为满意。

Abstract:利用硅胶柱层析法分离辣椒红色素，得到黄色素酯和辣椒红素二酯，比较它们的光稳定性。结果表明，在光照条件下，辣椒红素二酯稳定性较高，4d后仍有50％未被降解；避光存放3个月，辣椒红素二酯最稳定，降解率不到0．5％，而混合色素的稳定性降低。

Abstract:In this manuscnpt,the phenylalanine adsorption isotherm with D4020 macroporous polystyrene resin in aqueous solution.The results indicated that Equilibrium adsorption data could be well fitted to the Freundlich equation.The adsorbtion capacity was increas

Abstract:通过反转录PCR法成功地扩增出日本曲霉β-呋喃果糖苷酶基因，基因片断长度为1917bp，编码638个氨基酸。将所得片断定向克隆到pYX212载体上，并转化至酿酒酵母中，通过酵母菌落PCR检验后，确定该基因在酿酒酵母中获得表达，转化子平均酶活为26．4U／mg。

Abstract:In this paper,the biodecolorization capacities of strain XC6 to 10 kinds of dyes in dye wastewater,belonging to reactive,acidic,basic,direct and dispersed dye respectively,were studied that the results showed that the direct,the dispersed and dyes acidic

Abstract:A denitrifying dephosphatation process was operated in this study.The results showed that the denitrifying dephosphatation process could remove phosphorus and nitrogen successfully at an adequate concentration of nitrogen in inflow.Above 96% COD was remov

Abstract:In this manuscript,98 mold strains were isolated from medium temperature Daqu using PDA culture medium.By analysis of the morphology and culture characteristic,the isolates were clustered into 6 genotypes,and the representatives of each genotype were rand

Abstract:以羊肚菌为材料，研究了发酵过程中碳源、氮源、无机盐、培养条件对菌丝体生物量、胞外多糖的影响，以及发酵过程中菌丝体生物量、胞外多糖、总糖及还原糖质量浓度、培养基PH值的动态变化，并在此基础上确定了羊肚菌液体深层发酵的最佳条件。结果表明：羊肚菌液体深层发酵的最优培养基配比为：玉米粉4．0g／dL、葡萄糖1．0g／dL、黄豆粉2．0g／dL、酵母粉0．3g／dL、KH2PO4 0．2g／dL、MgSO4 0．1g／dL、CaSO4 0．1g／dL；最优培养条件为：24℃，起始pH5．8，250mL的摇瓶装液量为100mL，接种量10mL，摇瓶转速140r／min，发酵时间为108h。

Abstract:A flocculant-producing strain was isolated from the activated sludge and identified as genus Diaphorobacter,which named as Diaphorobacter Z-052.The effect of initial pH,culture temperature and different ion on flocculant production was careful investigate

Abstract:The wide use of organophosphorus pesticide in china at present has not only caused the flourishing of agriculture but bring on serious environmental problems.Soil samples that had been fertilized with omethoate before in different places and from some iss

Abstract:三孢布拉霉（Blakeslea trispora）是发酵生产天然β-胡萝卜素的优良菌种。实验研究了乳化剂OP、Span 20、Tween 80 3种非离子型表面活性剂对三孢布拉霉合成β-胡萝卜素的影响，确定了三者的最佳作用浓度分别为0．075％、0．05％和1％，β-胡萝卜素产量的最大增长幅度分别为15％、10％和50％。抗氧化剂Ethoxyquin对β-胡萝卜素产量的增长有显著作用，最佳浓度为0．025％，β-胡萝卜素产量的增长幅度可高达70％。

Abstract:Polyphenol was one of the most important flavor compounds of beer.The beer quality(including non-biological stability,flavor stability and taste) was greatly influenced by the polyphenol.But the importance of the polyphenol compounds on beer flavor stabil

Abstract:介绍了葡萄和葡萄酒中β-葡萄糖苷酶的研究概况，理化性质、酶活测定方法，以及不同来源的酶活检测的研究概况，并且经过分析提出以对硝基苯基β-D-葡萄糖苷（pNPG）为底物检测葡萄浆果中的β-葡萄糖苷酶酶活的关键影响因素：粗酶液的制备、酶最适反应温度、最佳反应时间、缓冲液类型和pH及最佳吸收波长。

Abstract:The food systematology,the newly theories of the modern food economy,attracts special attention in the international food industry.This paper summarizes the formation and development of the Japanese food system.Meanwhile,this manuscript also puts an empha

Abstract:Fatty acid desaturases are pivotal enzyme for the biosynthesis of polyunsaturated fatty acids that introduce double bonds into fatty acyl chains on special sites.They are present in all groups of organisms and play a key role in the maintenance of the pro