Physicochemical Properties of Bread Baked from Flour Blended with Immature Wheat Meal Rich in Fructooligosaccharides

ABSTRACT: Grain of the soft white wheat cultivar Harus was harvested weekly from anthesis to maturity and fructooligosaccharides (FOS) contents were determined by reversed-phase high-performance liquid chromatography. Tests were carried out to determine the effect of adding immature wheat meal to a base flour of cultivar Russ (hard red spring) on the quality characteristics of bread. FOS content was also analyzed in baked bread, and the effect of transglutaminase in improving bread quality was examined. Marked decreases in FOS contents, such as 1-kestose and nystose, were observed with grain maturation. The overall quality of bread appeared to be acceptable, and the added FOS were retained after baking.     

"米邦塔"仙人掌面包、蛋糕的研制

对仙人掌蛋糕、面包制作的可行性进行了研究。分别采用海绵蛋糕制作方法和一次发酵法制作仙人掌蛋糕和面包，并对它们的感官质量进行了评定。结果表明：仙人掌焙烤食品的感官质量符合相关国家标准，与普通焙烤食品相比，在外观形态、内部组织结构等方面无明显差异，且剖面呈绿色，略带仙人掌清香。仙人掌面包、蛋糕的开发，为仙人掌资源的开发利用提供了一条新的途径。     

图像处理技术在面包烘焙品质检验中的应用

阐速了数字图像处理技术在烘焙面包品质检验中的应用,依据灰度共现矩阵算法提取图像的纹理特征,并通过二值化后的烘焙面包切片计算出其体积。试验结果表明,该方法不仅为面包烘焙品质的快速自动检验提供了客观准确的科学依据,使感官评价的指标客观化,而且经济可行。     

酶对馒头品质影响研究

探讨了脂乳酶、脂肪酶、葡萄糖氧化酶、α 淀粉酶及戊聚糖酶对馒头的体积、白度、内部结构、高径比、比容等的影响.结果表明:脂乳酶5mg/kg或葡萄糖氧化酶7mg/kg时,馒头高径比最大;α 淀粉酶5mg/kg或戊聚糖酶3mg/kg时,馒头比容最大.     

小麦粉面包烘烤品质指标的研究 Ⅰ.逐步回归分析筛选关键性指标

本实验应用逐步回归方法研究了河南50个小麦品种(系)的面包烘烤品质各指标间的关系,结果表明:面包评分、体积和比容均是评价面包品质优劣的综合性指标。和体积,比容相比较,以面包评分和烘烤品质各指标建立的回归方程具有更高的F值,复相关系数也较高。用面包评分代表面包烘烤品质可能较体积和比容更可靠更稳定。面包评分可看作是评价值和粉力二者综合作用的结果。     

Preparation and characterization of polypropylene/sodium propionate (PP/SP) composite films for bread packaging application

To prolong the shelf life of bread, polypropylene/sodium propionate (PP/SP) composite films were prepared via a melt‐extrusion process. To investigate the feasibility of using PP/SP composite films as a bread packaging material, their chemical structure, morphology, mechanical properties, barrier properties against water, surface properties, and antimicrobial properties were investigated. A storage test for bread was also conducted. The mechanical and thermal stability of the PP/SP composite films enhanced with increasing SP content. Compared with pure PP, the PP/SP composites had increased hydrophilicity that increased with increasing SP content. These composite films showed enhanced antimicrobial activity against both Gram‐negative and Gram‐positive microorganisms. This was due to the interaction of SP and water originating from the bread, which modifies the pH of the bread and causes destruction of the cellular structures of fungi and also reduces the growth rate of bacteria. The enhanced thermal, mechanical, antifungal, and antimicrobial properties achieved by the addition of SP can be beneficial for maintaining the freshness of bread and prolonging its shelf life.     

膨松剂对自发粉馒头品质的影响

以特一粉为基础粉,采用优选的方法,从不同的膨松剂组合中选择最佳的配比,分析对比了各种组合对自发粉馒头品质的影响.结果表明:单一的碳酸氢钠不能直接用于自发粉中;馒头用自发粉配方应采用两性复合膨松剂;以小苏打0.5 g,葡萄糖酸内酯1.0 g,高活性酵母1.0 g,L-半胱氨酸0.01 g(200 g面粉计)制作出的馒头品质较好.     

燕麦面包制作的工艺研究

燕麦的营养价值较其它谷物高,将燕麦粉和小麦粉配制成不同比例的混合粉,研究几种配方下制作面包的工艺性能。结果表明,当燕麦粉占混合粉的10%时,制作的面包工艺性能最佳。     

无溴面包粉改良剂研究

采用正交设计方法分别对无溴面包粉改良剂中氧化剂和酶制剂复配实验进行优化设计,并分别以L-抗坏血酸(Vc)、过氧化钙(CaO2)、偶氮甲酰胺(ADA)和真菌α-淀粉酶、半纤维素酶、葡萄糖氧化酶为单因素,得到复合酶制剂最佳配方为:Vc,180 ppm;CaO2,40 ppm;ADA,20 ppm;淀粉酶,30ppm;半纤维素酶,60ppm;葡萄糖氧化酶,10 ppm。     

面包老化研究中新技术及研究进展

面包在中国市场上所占比重越来越大同时,面包老化问题也越来越引起人们关注。该文综述近红外、核磁共振、差示热量扫描几种新技术在面包老化研究中应用进展,旨在对面包老化研究工作起到一定指导意义。