针刺产品质量的探讨

分析了针刺法合成革基布质量的控制要素 ,以及预针刺机的牵伸比 ,针刺机的布进图对基布质量的影响。     

针刺产品质量的探讨

分析了针刺法合成革基布质量的控制要素，以及预针刺机的牵伸比，针刺机的布进图对基布质量的影响。     

剖析针刺机配置对海岛纤维皮革基布品质的影响

结合海岛超细纤维的特性及其针刺皮革基布的生产工艺,分析了针刺机的配置对皮革基布质量的影响因素,阐述了配置针刺皮革基布联合机应该注意的问题。     

剖析针刺机配置对海岛纤维皮革基布品质的影响

结合海岛超细纤维的特性及其针刺皮革基布的生产工艺,分析了针刺机的配置对皮革基布质量的影响因素,阐述了配置针刺皮革基布联合机应该注意的问题。     

剖析针刺机配置对海岛纤维皮革基布品质的影响

结合海岛超细纤维的特性及其针刺皮革基布的生产工艺，分析了针刺机的配置对皮革基布质量的影响因素，阐述了配置针刺皮革基布联合机应该注意的问题。     

新型修面针刺机

仪征市海润纺织机械有限公司通过多年努力，设计开发试制成功一种适用于合成革基布过滤材料等针刺基布修面的针刺机、YBG319型双针板上下对刺式主针刺机。     

不定岛超细纤维高档合成革基布的针刺技术初探

介绍了不定岛超细纤维高档合成革基布的质量要求、生产工艺以及关键设备针刺机的技术要求和工 艺控制。     

不定岛超细纤维高档合成革基布的针刺技术初探

介绍了不定岛超细纤维高档合成革基布的质量要求、生产工艺以及关键设备针刺机的技术要求和工艺控制。     

影响针刺PU合成革基布均匀度的因素分析

非织造布存在表面粗糙、凹凸不平、厚薄不一等弱点,致使最终产品表面产生斑纹,严重影响合成革质量。本文从梳理机输出纤网、铺网机输出纤网层和针刺机针刺三个方面分析了影响非织造基布均匀度的原因。     

针刺非织造合成革基布的质量控制

结合生产实际重点分析了针刺非织造合成革基布的原料性能、梳理、铺网、针刺、定型等关键工序的设备以及影响基布质量的控制工艺     

热轧地板革基布的生产技术

本文简介地板革基布的生产技术 ,叙述基布的特殊质量要求和测试方法。     

热轧地板革基布的生产技术

介绍了地板革基布的生产技术，重点叙述了基布的特殊质量要求和测试方法。     

全脂加糖大豆炼乳的研究

采用以蛋白酶为主的复合酶生产全脂加糖大豆炼乳。对酶的用量、作用时间、底物浓度之间的关系进行了研究,确定了最佳生产工艺和配方。讨论了影响产品质量的因素。在酶用量为300IU/g底物、作用时间为20min,底物浓度为1:4(磨浆时的豆水比)时产品质量和风味俱佳。经酶水解后浓缩制得的大豆炼乳溶解度大大提高,粘度降低,流动性好,易为人体消化吸收。     

A reliable technique to identify superior quality clones from tea germplasm

Variations in the substrate level and enzyme activity of prominent south Indian tea germplasm were studied. The content of polyphenols, catechins (substrates) and polyphenol oxidase (PPO) showed variation, which influenced the final black tea quality. The enzyme PPO occurs in tea shoots and catalyzes the reactions between catechins to form theaflavins in the presence of oxygen. The catechins mainly epicatechin (EC), epigallo catechin gallate (EGCG), epicatechin gallate (ECG) and epigallo catechin (EGC) get mixed with PPO during the oxidation process to form quality constituents like theaflavins (TF), thearubigins (TR) and high polymerized substances (HPS). Theaflavins and their fractions such as simple theaflavin, theaflavin monogallate, (TFMG), theaflavin digallate (TFDG) in black tea are the essential quality constituents that are responsible for the liquor characteristics where as TR and high polymerized substances impart colour to the liquor. As oxidation of macerated leaves proceed through different stages of tea manufacture, a decline in PPO activity, polyphenol and catechin contents were observed. Data revealed that the oxidation reaction was faster during the initial stages of oxidation. During the period, oxygen consumption was higher and declined thereafter. Ratio between the enzyme (PPO) and its substrate (catechins) were used to characterize the quality potential of tea clones. An attempt has also been made to categorize prominent tea clones as high, moderate and average quality clones based on their enzyme substrate ratio. Theaflavin content (oxidation product) of different tea clones suggests that the ratio between PPO and catechins forms an important criterion which determines black tea quality. Results obtained were compared with standard clones of known high quality (CR-6017) and moderate quality (SA-6). The study reveals that the enzyme substrate ratio can be used to identify superior quality clones from the existing tea germplasm.     

关于针刺法非织造技术的应用实践与思索

分析了我国针刺法非织造布产业目前所面临的新情况;介绍了应用针刺法生产超纤合成革基布和高密度合成革基布的工艺技术以及传统纺织后整理技术在针刺法非织造布生产中的应用;解析了针刺法合成革基布常见的质量问题及其产生原因;指出针刺法非织造布生产企业应寻求多元化发展,在共赢中做强我国的针刺法非织造布产业。     

杏鲍菇菌糠全混合日粮对波尔山羊肉品质的影响

目的研究不同杏鲍菇菌糠添加量的全混合日粮对羊肉品质的影响。方法选取3月龄的波尔山羊,对照组饲喂基础日粮,试验组分别饲喂含12%、20%、28%杏鲍菇菌糠全混合日粮45 d,测定各组羊肉pH值、色泽、加压失水率、蒸煮损失率、剪切力、营养成分,通过上述指标确定最适杏鲍菇菌糠添加量。结果与对照组相比,添加12%~20%杏鲍菇菌糠,羊肉pH值降低,L~*、a~*与b~*值增大,加压失水率增加,蒸煮损失率与剪切力降低、氨基酸总量提高;而添加28%杏鲍菇菌糠,羊肉pH值、色泽、加压失水率、氨基酸总量变化不明显,蒸煮损失率下降,剪切力增加。结论全混合日粮中添加一定比例杏鲍菇菌糠可提高羊肉品质,最适添加量为20%。     

影响CVD金刚石膜完整性的几个关键问题

直流喷射化学气相沉积金刚石膜,其完整性一直是个难以解决的技术难题,并且直接影响了其推广应用。文章通过研究金刚石膜的质量、衬鹿与膜的结合力、以及衬鹿的膨胀系数等,分析了影响金刚石膜完整性的几个关键因素。     

响应面法优化豆粕蛋白酶解条件

采用响应面法对豆粕蛋白酶解条件进行优化研究.以水解度为指标,采用单因素试验的方法考察了pH值、底物质量浓度、加酶量、水解温度和水解时间等因素对水解度的影响.在单因素试验基础上,根据中心组合(Box-Behnken)试验设计原理采用3因素3水平的响应面分析法,在分析各个因素的显著水平和交互作用后,得出最佳工艺条件为pH值6.96、底物质量浓度5.2 1g/100mL、加酶量3％、酶解温度53.8℃、酶解时间6h.在该条件下水解度达到23.67％.     

不同菌材培养料对茶树菇生长特性及营养品质的影响

目的 研究不同菌材培养料对茶树菇(Agrocybe chaxingu)生长特性和营养品质影响。方法 以贵州常见菌材构树(Broussonetia papyrifera)、刺槐(Robinia pseudoacacia)、光皮桦(Betula luminifera)、青冈(Quercus glauca)为栽培料,测定比较木材理化特性对茶树菇农艺性状及粗蛋白、多糖、粗脂肪、矿质元素和氨基酸含量的影响。结果 4种菌材对茶树菇菌丝生长速率影响不显著;构树培养茶树菇农艺性状最佳,其次为光皮桦;刺槐培养茶树菇粗脂肪和多糖含量最丰富。青冈培养茶树菇常量元素K、Mg、Ca、Na含量最高,构树培养茶树菇微量元素Fe、Zn、Cu含量最高;光皮桦培养茶树菇总氨基酸、必需氨基酸和限制性氨基酸含量最高。粗蛋白、Cu、Fe、Zn、苯丙氨酸、缬氨酸、Ca、Mg、苏氨酸、多糖、粗脂肪、K依次为区分4种菌材培养茶树菇主要指标。菌丝生长速率与全氮含量呈负相关性,培养基中菌丝生长速率与菌材半纤维素含量呈显著正相关性;子实体重量与木质素含量呈显著正相关性。结论 菌材理化性质对茶树菇生长及营养品质具有显著影响。构树和青冈培育茶...     

Food Protein Nutrient Improvement by Protease at Reduced Water Activity

Protein resynthesis catalyzed by α-chymotrypsin was studied to modify the nutritive quality and physical properties of albumin. The increase in substrate concentration produced an increase in enzyme synthetic action. At low substrate concentration, several water activity depressing additives (salts or polyols) in the reaction media enhanced plastein synthesis. Polyols enhanced the synthetic reaction proportionally to an increase in their molecular size. The positive effect of alkali halides was related to an increase in cation size and decrease in anion size. All plastein products showed a clear increase in nutritional value with respect to the substrate.