大豆异黄酮在军用功能食品中的应用

介绍了大豆异黄酮的基本概念及生物学功能,并列举了其在军用抗疲劳功能食品、军用耐缺氧功能食品、军用抗辐射功能食品、预防骨质疏松功能食品中的应用,并对大豆异黄酮在军用功能食品中的应用作一展望。     

超声波对大豆水化油脚-磷脂酶A2反应体系的影响

大豆磷脂酶改性可以明显改善其O／W乳化性能，磷脂酶改性反应时间一般需要7h，而超声波处理则可明显缩短反应时间。以大豆水化油脚为原料，研究了超声波处理对磷脂酶A2制备酶改性大豆磷脂的影响。结果表明，在pH7．5，55℃反应条件下，采用超声波辅助反应40min后，所制备的溶血磷脂HLB值达到8。与未采用超声波溶血磷脂HLB值相同。超声波促进磷脂酶改性效果明显。     

现代酱油的感官检查

介绍了酱油感官检查的定义，基本要求，包括器具方面，环境方面及品评员的要求。同时介绍了日本酱油行业通用的感官检查的几种方法。     

大豆磷脂的应用

我国大豆磷脂资源丰富、原料价格低廉,但未被充分利用。本文叙述了三个问题,提高大豆浓缩磷脂质量的注意事项、大豆磷脂改性后HLB等的变化以及大豆磷脂在多种行业上的应用。     

醇法大豆浓缩蛋白酶法改性研究

为提高醇法大豆浓缩蛋白的溶解性，采用Alcalase蛋白酶对醇法大豆浓缩蛋白进行酶法改性试验。试验表明，酶法水解能显著提高大豆浓缩蛋白的溶解性。酶解的最佳条件是pH8．5、温度62℃、底物浓度5％，酶浓度2％(E／S)，在此条件下酶解4h，大豆浓缩蛋白的水解度在12％以上，大豆浓缩蛋白的NSI从10％提高到85％左右，有较好的溶解性。并利用浊度法测定了不同水解度条件下酶解大豆浓缩蛋白的乳化特性，结果表明水解度约为8％时乳化性最大，水解度约为6％时乳化稳定性最好。     

酿造酱油的多种口味和功效

为充分了解酱油这一古老的传统调味品,介绍了酱油不仅具有独特浓厚的调味作用,同时兼有其它的功效.酱油不仅是百姓饮食生活中的必需品,同时对人体正常的生理代谢也有着一定的调节作用.     

大豆纤维/竹纤维混纺织物染色

大豆纤维 /竹纤维混纺织物前处理采用酶退浆、H2O2 漂白,染色工艺采用Cibacron染料溢流一浴染色,通过对前处理的方法和染色进行分析,给出了助剂的用量、染色温度、时间等工艺参数;并就染色中常见的色花、色点、两相不匀、折皱等问题提出改进措施。     

The effect of homogenization and addition of polysaccharides on the viscoelastic properties of processed cheese sauce

This study was conducted to determine the effect of 1-stage homogenization (OSH) and 2-stage homogenization (TSH) and the addition of polysaccharides [κ-carrageenan (CR) or furcellaran (FR) at levels ranging from 0.000 to 1.000% (wt/wt)] on the physicochemical, viscoelastic, and mechanical vibration damping properties of processed cheese sauces (PCS) after 30 d of storage (6 ± 2°C). The basic chemical properties (pH, dry matter content) were similar for all tested samples. Viscoelastic measurements indicated that PCS rigidity was directly proportional to increasing CR or FR concentration and to the application of homogenization. The interactions between the application of homogenization and the concentration of polysaccharides used were also significant. Compared with OSH, TSH did not lead to any further increase in the rigidity. The preceding results were also supported by data obtained from a nondestructive method of mechanical vibration damping. No changes in water activity were observed in any PCS sample. Overall, the addition of FR or CR appeared to be highly suitable for increasing the emulsion stability of PCS. If PCS products with softer consistency are desired, then a concentration of CR/FR ≤0.250% (wt/wt) could be recommended together with OSH/TSH. For products for which a firmer PCS consistency is required, the addition of CR in concentrations of ≥0.500% (wt/wt) or FR in concentrations of ≥1.000% (wt/wt) together with OSH is recommended. Finally, as the concentration of polysaccharides increased, a darker PCS color was observed.     

磷脂酶C水解大豆油磷脂提高油脂精炼率的研究

大豆毛油中磷脂含量约为2%,采用正己烷为溶剂,用磷脂酶C水解大豆毛油中的磷脂,生成甘油二酯,可以减少毛油的炼耗,提高精炼率。磷脂酶C水解大豆毛油中丙酮不溶物(AI)的速度和底物浓度、温度、搅拌速度在一定范围内成正相关;在毛油浓度高时,扩散成为限速步骤;最佳水解条件为:搅拌速度100 r/min,反应温度40℃,毛油浓度75%,酶的加入量0.02%,反应6 h丙酮不溶物的水解率为85.7%,毛油的精炼率提高3.08%。     

发酵银耳豆奶的研究

该文论述了以豆浆为原料 ,经过银耳菌丝体摇瓶发酵 ,在豆浆中产生大量的菌丝体 ,然后再配以其他原料加工成风味独特的发酵银耳豆奶。