麦芽糖醇替代蔗糖对低糖型猪肉糜脯质量的影响

应用功能性甜味剂—麦芽糖醇部分替代蔗糖（0%、25%、50%、75%）,以期降低传统肉糜脯中蔗糖的含量,并在不影响产品水分活度的基础上增加含水量,提高肉糜脯的柔软性。研究中分别测定了肉糜脯的出品率、剪切力、水分活度、水分含量、色差、T2弛豫时间和感官质量。结果表明随着替代比例的增加,肉糜脯的出品率和水分含量显著增加（p<0.05）;剪切力、红度值（a*值）则显著降低（p<0.05）;各组水分活度差异不显著;用低场核磁（LF-NMR）技术探究水分迁移变化中发现,拟合后的T2弛豫时间分布为3⁴个峰,T₂₁与T₂₂随着麦芽糖醇替代比例的增加均显著减小（p<0.05）,这表明肉糜脯中的水分的移动性减弱。综合各项指标和感官评价结果,麦芽糖醇替代蔗糖的比例为50%较为合适,此时产品的出品率、含水量、剪切力、水分活度分别为52.36%、29.65%,27.96 N和0.883,除红度值外,颜色变化不明显,感官评分则与对照组无显著差异。      

麦芽糖醇对冷冻面团水分迁移及馒头食用品质的影响

为探究麦芽糖醇代替蔗糖在冷冻馒头面团中应用的可行性,采用0%(S100-M0)、25%(S75-M25)、50%(S50-M50)、75%(S25-M75)、100%(S0-M100)(质量分数)的麦芽糖醇替代蔗糖制作冷冻面团,对面团水分迁移、流变学、熔融特性以及馒头色泽、质构、挥发性风味物质的变化进行分析。结果表明,添加麦芽糖醇后,冷冻面团解冻损失率显著降低;水分流动性显示,S50-M50、S25-M75处理组的冷冻面团结合水含量较高,水分流动性较低;熔融特性表明,S25-M75具有最低的热焓值ΔH和可冻结水含量(F_w);频率扫描显示,S75-M25、S50-M50、S25-M75处理组提高了面团的黏弹性。冷冻面团蒸制后,糖醇处理的馒头自由水含量下降;S50-M50、S25-M75处理组呈现较稳定的色泽品质;S75-M25、S0-M100处理组的硬度、咀嚼性显著增加;GC-MS结果显示,5种处理组共测出14个香气成分,利用投影变量重要性因子(variable importance in projection, VIP)从所有处理组中筛选出27个差异香气物质对馒头...     

粉末麦芽糖醇的研制

粉末麦芽醇是以淀粉为原料，通过水解，还原，全结晶工艺生产的，它主要是作为甜味剂，用于生产保健食品，另外它还可以用于轻工业行替甘油及作为一种化工原料。     

麦芽糖醇白茶面包的研制

以高筋面包粉、超微白茶粉、麦芽糖醇粉、烤焙油为主要原料,加入奶粉、干酵母、面包改良剂、鸡蛋、食用盐、面包乳化剂等配料,优化麦芽糖醇白茶面包的工艺配方。采用单因素试验及正交试验,以感官分析与质构分析为判断标准,优化麦芽糖醇白茶面包的工艺配方。结果表明,当白茶粉为2.5%、麦芽糖醇粉为15%、烤焙油为10%时,制得的麦芽糖醇白茶面包其营养及风味品质最优。     

利用碎米麦芽糖制备麦芽糖醇的氢化工艺

对碎米麦芽糖加氢制备麦芽糖醇的氢化工艺进行研究.试验结果表明氢化过程的最佳工艺条件为:氢化压力10MPa,氢化温度130℃,pH值9,催化刺用量8%,氢化时间120 min,麦芽糖浓度为30%.在此条件下,测得碎米麦芽糖转化为麦芽糖醇的转化率为45.17%.     

麦芽糖及麦芽糖醇的生产与应用

本文介绍了不同规格的麦芽糖和麦芽糖醇的生产技术,和在功能性食品、糖果、巧克力、果汁饮料和冷冻食品中的应用情况,表明麦芽糖和麦芽糖醇作为一种重要的食品添加剂和甜味剂,在我国食品工业中具有广阔的应用前景.     

茶多酚对面包品质及贮藏特性的影响

将茶多酚添加于面包中,研究不同添加量的茶多酚对面包的比容、感官品质、水分含量、酸度等特性的影响.结果表明:以250 g面包专用粉为基准,在基础配方下,当茶多酚添加量为0.015％时,面包口感好、水分含量高、酸度低、比容大、感官评分较高.从面包的储藏品质来看,同样在4℃和25℃条件下贮藏72 h,添加茶多酚的面包较空白组...     

麦芽糖醇的特性和应用

<正> 近年来酶利用技术和分离技术的发展,不仅以淀粉、蔗糖和木材为原料生产出只具有甜味的糖质,还可能生产出对人体有益的具备各种功能的新糖质,从而为丰富人们健康的饮食生活作出贡献。     

用碎米制备麦芽糖醇

麦芽糖醇是麦芽糖经氢化还原而制得的一种双糖醇，较完整地介绍了麦芽糖醇的反应机理及生产工艺流程，并通过实践证明，采用双酶法生产麦芽糖醇，可使麦芽糖醇干基含量达到７８．１％。     

Effect of storage of surfactant gels on the bread making quality of wheat flour

Sodium stearoyl-2-lactylate (SSL), diacetyl tartaric acid esters of monoglyceride (DATEM), glycerol monostearate (GMS) and distilled glycerol monostearate (DGMS) surfactant gels were made with water and varying shortening contents. The SSL, DGMS, GMS and DATEM gels, with and without shortening in them, were stored for 3, 6, 9 and 15 days and their effects on bread-making quality were studied. All the gels improved the bread-making quality, to varying extents depending on the surfactant. On storage of gels, the improving effect was gradually reduced with increasing time, for all the gels made, with or without shortening. The adverse effect of storage on gels with shortening on bread-making quality was greater than that on gels without shortening and it varied from surfactant to surfactant. The results brought to light the adverse effect of storage of gels in improving the quality of bread.     

山梨糖醇对面包储藏期间品质的影响

利用质构仪﹑低场核磁共振(LF-NMR)等方法研究山梨糖醇对面包储藏期间的品质变化以及水分含量的影响。结果表明:山梨糖醇的加入使得面团发酵速率有所下降,也能够显著降低面包的硬度和咀嚼性(P0.05),减小储存期间的老化度。LF-NMR测试表明山梨糖醇的加入能提升面包的持水性能。利用面包硬度拟合Avrami方程,面包的老化速率常数有所减小,且得到的相关系数较高,说明面包硬度是面包老化在质构上的表征。总体而言,山梨糖醇能提升面包的持水性能,改善面包的口感。     

燕麦面包的品质及储存性质研究

在普通小麦粉中添加燕麦粉,研究了混合粉的性质和制作出的面包品质及储存稳定性.试验结果表明:随着燕麦粉添加比例的提高,混和粉的粉质特性发生显著变化.吸水率逐渐升高,稳定时间、形成时间及粉质指数与燕麦粉添加比例呈负相关;粉质指数和弱化度呈极显著负相关.添加燕麦粉的面包储存稳定性总体上好于普通面包,且在储存第2～3 d时品质最佳.     

Effect of prebaking and frozen storage on the sensory quality and instrumental texture of bread

The effect of part‐baking, freezing, frozen storage, thawing and rebaking on the quality of bread has been investigated. Quality evaluation of the stored bread was done using sensory analysis, instrumental texture profile analysis (TPA) and cutting tests of the crumb and crust. It was found that frozen bread with 71% fraction of baking time showed high stability of sensory features and rheological parameters during the entire storage period (11 weeks) and, after thawing and rebaking, had superior quality in comparison with its frozen and thawed full‐baked (100%) counterpart. Second‐order regression showed that the optimal time for the initial prebaking lies within the wide range from 74 to 86% of the time needed for the full‐baking of unfrozen bread. It is therefore a good method for preventing the staling process and obtaining a product of a quality close to that of fresh, not frozen bread. It has also been shown that a fraction of baking time equal to 43% was too small to ensure desirable sensory and textural features of bread after its frozen storage and rebaking. © 2002 Society of Chemical Industry     

Effect of water content and storage time on white pan bread quality: instrumental evaluation

 The firmness of white pan bread was measured using compression and bending tests to determine the influence of the water content of the dough on bread quality and on the changes taking place with storage time. Three sample breads were prepared using different flours and three different water contents, and firmness was tested at 24, 48 and 72 h. For gluten-enriched flours, higher water contents tended to bring about a decrease in compression force and bending values, improving shelf-life by reducing the increase in firmness over time. Received: 24 March 1997     

Effect of water content and storage time on white pan bread quality: instrumental evaluation

 The firmness of white pan bread was measured using compression and bending tests to determine the influence of the water content of the dough on bread quality and on the changes taking place with storage time. Three sample breads were prepared using different flours and three different water contents, and firmness was tested at 24, 48 and 72 h. For gluten-enriched flours, higher water contents tended to bring about a decrease in compression force and bending values, improving shelf-life by reducing the increase in firmness over time. Received: 24 March 1997     

Effect of gluten addition and storage time on white pan bread quality: instrumental evaluation

 Continuing an investigation into the different factors affecting the quality of white pan bread and the changes taking place during storage, on the basis of instrumental determinations of firmness using compression and bending tests, this second instalment addresses the influence of adding gluten to the dough. Three types of bread were prepared using three different water contents and three proportions of added gluten each. Firmness was evaluated at 24, 48 and 72 h. Addition of gluten significantly increased flexibility and significantly decreased firmness in the bread at the higher water content levels. It also improved the keeping properties of the bread by slowing the increase in firmness with time; this effect was also higher at the higher water content levels.     

Effect of gluten addition and storage time on white pan bread quality: instrumental evaluation

 Continuing an investigation into the different factors affecting the quality of white pan bread and the changes taking place during storage, on the basis of instrumental determinations of firmness using compression and bending tests, this second instalment addresses the influence of adding gluten to the dough. Three types of bread were prepared using three different water contents and three proportions of added gluten each. Firmness was evaluated at 24, 48 and 72 h. Addition of gluten significantly increased flexibility and significantly decreased firmness in the bread at the higher water content levels. It also improved the keeping properties of the bread by slowing the increase in firmness with time; this effect was also higher at the higher water content levels. Received: 4 May 1998     

Effect of frozen storage time on the bread crumb and aging of par-baked bread

The effect of frozen storage time of par-baked bread on the bread crumb and staling of bread obtained after thawing and full baking is described. The moisture content, hardness and retrogradation enthalpy of the amylopectin were determined in the par-baked bread and in the full baked bread after 7, 14, 28 and 42 days of frozen storage at −25 °C. In addition, the effect of frozen storage on the crumb microstructure was analyzed by cryo scanning electron microscopy (Cryo-SEM). The moisture content of both partially and full baked bread decreased with the time of frozen storage. The crumb hardness of the par-baked bread after different periods of frozen storage was kept constant, while that of their full baked counterpart increased with the time of frozen storage. In both types of breads, the enthalpy of amylopectin retrogradation did not vary with the period of frozen storage. The staling, measured as hardness increase and amylopectin retrogradation, increased along the frozen storage. The changes observed on the frozen par-baked bread after thawing were attributed to the damage of bread structures produced by the ice crystallization, and the microstructure study support that conclusion.