Abstract:Total RNA was isolated from Penicillium cyclopium PG37 with TRIzol reagent by one step method, in which the 28S and 18S rRNA bands of fungi were characterized on formaldehyde denatured electrophoresis. With the information of N terminal amino acid s

Abstract:The effect of different green making temperature & humidity on aromatic constituents in Lingtoudancong Oolong tea were studied by gas chromatography and mass spectrometry. Results showed that the tea made at high temperature and low humidity possessed le

Abstract:将筛选得到的酵母添加于固形物质量分数为 2 5 %的普通级低聚果糖 (FOS)溶液中 ,以消除产品中的副产物葡萄糖 ,提高FOS的含量 .研究了固形物质量分数、起始 pH值、酵母添加量对消除葡萄糖的影响 ,得到了不含葡萄糖且FOS质量分数达 82 .85 %的产品 .后者再经果糖转移酶作用 ,于 5 0℃、pH 5 .5下反应 10h ,FOS质量分数可提高至 85 .2 3% .

Abstract:The extraction procedure of fucoidan from Sargassum fusiforme was studied. The fucoidan product was obtained by pretreatment of algae powder with high concentration ethanol, diluted acid extraction, concentration under vacuum, ethanol precipitation a

Abstract:采用乙酸酐对小麦面筋蛋白质进行酰化改性 .结果表明 :小麦面筋蛋白质乙酰化的最佳反应条件为面筋蛋白质质量分数 5 % ,反应温度 35℃ ,乙酰酐用量为小麦面筋蛋白质用量的 15 % ;乙酰化改性后的面筋蛋白质 ,溶解度、乳化能力和起泡能力均得到了提高 ,乙酰化小麦面筋蛋白质对弱筋粉粉质特性的改善效果强于普通谷朊粉 .

Abstract:对发酵法生产的灰树花胞外多糖GLP A 2的理化特性与结构进行了初步研究 .经凝胶柱层析和HPLC检测纯度 ,证明水溶性多糖GLP A 2为单一均匀组分 ,不含蛋白质和核酸 ,比旋光度[α]12D =+ 177.5 0°(H2 O ,0 .1) ,HPLC法测得平均相对分子质量为 6 .2× 10 4 .GC、IR和13C NMR分析表明 ,GLP A 2是一类 β 葡聚糖 ,分子的主链以 β (1→ 3) 糖苷键连接 ,并含有 β (1→ 6 )、α (1→2 )、α (1→ 3)及 β (1→ 2 )糖苷键相连的侧链 .GLP A 2可与刚果红结合 ,形成的络合物在 0～ 0 .4mol/L的NaOH溶液中 ,表现出最大吸收波长 (λmax)的特征变化 ,同时在CD谱中出现明显的有序结构信息 .这提示GLP A 2在溶液中存在三股螺旋构象 ,维持其有序构象的力可能以氢键力为主

Abstract:The molecular orbitals and electron structure of ganoderma acid M1 and M2, purified from fermented mycelia, were calculated by semi empirical method(AM1). The results showed that the ganoderma acid M1 and M2 were similar in the structure of orbitals and

Abstract:The molecular orbitals and electron structure of ganoderma acid M1 and M2, purified from fermented mycelia, were calculated by semi empirical method(AM1). The results showed that the ganoderma acid M1 and M2 were similar in the structure of orbitals and

Abstract:The immobilzed growing yeast cells and Aspergllus niger mycelin were used in the fermentation of amino acid 1iquid seasoning.After the fermentation,the flavour and taste of the amino acid 1iquid seasoning were obviously improved.

Abstract:This paper discussed the manufacture of natural and chromatic bean curd from soy bean, mixed juice of green grocery and artemisia selengensis, carrot juice, and black sesame juice.The best parameter of these techniques was determined. This product changed

Abstract:通过酶法水解将小梅鱼制备成营养型高档调味剂 .用酶对小梅鱼进行水解 ,结果表明温度、pH、酶的种类、酶的组合、酶添加的顺序对产物的分布有影响 .在初始pH值为 8,温度为 5 0℃时 ,胰酶水解产物中小分子产物含量较高 .胰酶的水解产物用微生物风味复合酶进一步酶解 ,可脱除苦味 .对产物进行氨基酸分布检测 ,结果显示 ,产物中含 18种氨基酸 ,总氮质量分数为 12 6 .4mg/ g(以N计 ) ,α 氨基氮质量分数为 6 0 .8mg/ g .

Abstract:Grifola frondosa is an edible and medicinal fungus. Extracelluar Polysaccharide of Grifola frondosa has various physiological activity. In the paper, the effects of nutritional conditions on the production of extracellular polysacchride of Grifola

Abstract:The conditions of entrapping yeasts by mixed supports, k carrageenan and konjac glucomannan were studied.Through orthogonal experiments,the amount of k carrageenan, konjac glucomannan and deionized water were determined. The shape of immobilized yeasts

Abstract:研究了热水处理对茭白的嫩度、表皮色泽、叶绿素含量的影响 .结果表明 :38℃热水处理 1h可保持茭白的嫩度、抑制表皮中叶绿素的合成、抑制细胞质膜相对透性的增加 ,研究还表明茭白采后无呼吸高峰出现 .

Abstract:通过橄榄冻前不同的处理工艺比较 ,发现青橄榄经 0 .2 %碳酸氢钠溶液浸泡不同时间后速冻解冻 ,对于阻止解冻后的色泽变化稍有作用 ,但是不明显 ;冻前热烫 ,0 .2 %碳酸氢钠溶液热烫比水热烫要好 ,其中以 0 .2 %碳酸氢钠溶液 90℃热烫 5s效果最好 ,可以维持样品 5h内色泽不出现明显的改变 ;经过微波处理后速冻 ,以 314W处理 15s的效果较好 ;以不同的护色液进行反压处理真空封口包装或者使果实表面形成糖衣的方法 ,对于橄榄解冻后护色 ,则具有更好的效果 .分析测定结果表明 ,经较好的护色方法处理 ,速冻解冻 9h的橄榄样品中的叶绿素含量与未速冻的原料中的叶绿素含量接近 .

Abstract:研究了碳源、氮源和无机盐对红曲霉Y 7产多糖的影响 ,优化并确定了产胞外多糖的培养基组成 :麦芽糖 6 0 g/L ,蛋白胨 2 .5g/L ,磷酸二氢钾 4 g/L ,硫酸镁 0 .5 g/L ,氯化钙 0 .6 g/L .研究了油脂对胞外多糖的影响 ,并确定棕榈油的添加量为 0 .2 g/dL .在 5 0 0mL的三角瓶装培养基 75mL ,接种量 15 % ,种子液种龄 2 4h ,培养温度 33℃ ,摇床转速 2 2 0r/min ,培养 96h .在上述条件下生物量干重为 1.4 2 g/dL ,发酵液胞外多糖产量可达 3.2 4 g/L ,比初始条件高出 2 .5倍 .

Abstract:采摘后的鸭梨用不同添加量的乙醇处理 ,添加量分别为 0、2、4、6mL/kg(以鸭梨计 ) ,一周后于 1℃冷藏 ,测定乙醇处理对鸭梨生理及品质的影响 .结果表明 :以 4mL/kg乙醇添加量处理的鸭梨 ,能抑制乙烯的生物合成 ,减缓组织膜的破坏 ,增加多酚氧化酶 (PPO)和过氧化物酶 (POD)的活性 ,增加果实硬度及早期果实的可溶性固形物 ,降低可滴定酸含量 ,抑制叶绿素的降解 ,增加果实绿色指数 ,降低烂果率和鸭梨黑心病的发病率 .说明乙醇处理能增加鸭梨抗性 ,提高果实品质

Abstract:将来自嗜热脂肪芽孢杆菌IAM 110 0 1的高温乳糖酶基因bgaB亚克隆到具强启动子的大肠杆菌载体 pKK 2 2 3 3中 ,经IPTG诱导后 ,表达出的重组蛋白质仍具有耐高温活性 ,其相对分子质量与天然蛋白质相似 ,表达量为 1.5U/mg ,比出发菌株高 10倍

Abstract:以三角帆蚌为原料 ,利用木瓜蛋白酶对蚌肉蛋白质进行水解 ,正交试验结果表明 ,酶解最适条件为 :温度 5 0℃、pH 6 .5、时间 5h、加酶量 0 .6 % ,该条件下蚌肉蛋白质的水解度为 4 8.9% ,蛋白质回收率达 78.1% .

Abstract:研究了不同体积分数的乙醇溶液对柱层析分离大豆磷脂中磷脂酰胆碱的影响 ,为工业化色谱法生产磷脂酰胆碱提供了一定的依据 .不同体积分数乙醇在不同洗脱体积下得到的样品 ,其磷脂酰胆碱的质量分数为 6 0 %～ 10 0 % .

Abstract:By chromatography and the detection of inhibition enzyme activity, a few kinds of trypsin inhibitors and thrombin inhibitors were found in the water bloom from Taihu Lake.

Abstract:The physical chemical properties and fatty acid composition of Actinidia chinensis seed oil were investigated in this paper. The results indicated that unsaturated fatty acid were the main components of Actinidia chinensis seed oil, and linoleni

Abstract:The method was based on the formation of a chloroform soluble complex of detergent and methylene blue in a stoechiometric ratio.The detergent concentration was determined spectroscopically. Residual detergents in the fractionated lard by surfactant were

Abstract:Rice bran is an inexpensive, underutilized and high nutritional value coproduct of rough rice milling. Rice bran protein (RBP) is a kind of hypoallergenic, high protein efficiency ratio (PER) vegetable protein. The method commonly used for extracting prot

Abstract:Aerobic granular sludge is the self immobilized sludge, which is recently found under the aerobic condition. Aerobic granular sludge demonstrates high settling velocities leading to good solid liquid separation, high biomass retention, high activity and

Abstract:This review briefly presents the fundamental principle of ultrasonicacting on fermentation. The main application of ultrasonic in breeding, improving ferment technique, distilling and separating ferment production, on line measuring the concentration of