共查询到16条相似文献,搜索用时 125 毫秒
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冷冻面点生坯技术与中国传统食品产业化 总被引:3,自引:3,他引:0
阐述了冷冻面点生坯技术应用于中国传统食品工业的现状、工艺特点和冷冻酵母、冷冻面团改良剂在冷冻技术中的关键作用,分析了冷冻面点生坯技术在中国传统食品工业中的应用及其发展前景。 相似文献
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冷冻面团技术作为一种面制品加工工艺,具有防止产品老化,便于冷藏和运输等优势,因此在国内外得到广泛应用。然而,在冷冻面团生产和贮藏过程中存在一系列问题,例如:面筋结构完整性丧失、酵母细胞失活以及淀粉结构被破坏等,这些都导致了面制品品质的劣变。本文综述了影响冷冻面团品质的主要因素,总结了提高冷冻面团品质特性的有效方法,改良剂的添加不仅可以提高酵母的耐冻性,而且可以保持面团的流变学特性。基因工程技术修饰可以提高酵母的耐冻性和发酵能力。通过优化冷冻和储存条件,确保酵母的活性和面团的网络结构,使冰晶造成的冻害最小化。此外,新型冷冻技术的应用如超声波辅助冷冻可以在加速冷冻过程的同时生成均匀的冰晶,从而保护面团的网络结构。以期为改善冷冻面团品质以及为开发新型的冷冻面团技术提供理论依据。 相似文献
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冷冻面团技术因具有延长货架期、防止老化、便于冷藏和运输等优越性,在国内外食品工业得到了广泛的应用。然而,冷冻面团的生产和储存也会面临诸多困难,例如酵母活性降低、面筋结构破坏和冰晶形成等,这些都会破坏冷冻面团的质量。本文概括总结了影响冷冻面团品质因素的作用机理及研究现状,并总结了提高酵母耐冻性、改善面筋结构和面团特性的有效方法。添加改良剂可以减小由于冻藏或冻融循环致使面筋网络破坏的程度,添加谷氨酰胺转氨酶可改善冷冻面团的粘弹性与面筋网络结构,还可明显增加冷冻面团面包的比容,减小面包芯的硬度。选用优质酵母可提高酵母在冷冻期间的发酵力,改善冷冻面制品的风味和口感,其中高产胞外多糖的乳酸菌可以有效改善冷冻馒头面团品质。冷冻面团技术推动了我国馒头、包子、饺子、月饼等中式面食制品快速发展,具有一定的发展潜力。 相似文献
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我国冷冻面团技术的应用和发展综述 总被引:2,自引:0,他引:2
冷冻面团技术因具有便于冷藏和运输、能够标准化生产、降低成本等优越性,已成为我国食品工业最具发展潜力的技术之一,本文介绍了冷冻面团技术在生产上的应用现状,综述了国内外对冷冻面团技术的研究进展,分析了目前我国冷冻面团技术中存在的问题以及今后发展前景。 相似文献
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冷冻面团法生产面包的关键工艺讨论 总被引:1,自引:0,他引:1
冷冻面团法在烘焙食品领域中的应用越来越广泛,但也面临着一些技术难题。本文详细阐述了冷冻面团法生产面包的关键工艺,包括冷冻条件、酵母发酵活力的保持以及解冻工艺条件等。 相似文献
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BackgroundFrozen dough technology could effectively extend the shelf life of bread to ensure the freshness, which is widely used and gradually replace the traditional bread production. However, during the production and storage of frozen dough, a series of problems could take place, such as inhibition of yeast activity, damage of the structure of the dough, leading to the deterioration of dough quality.Scope and approachThis review summarizes the factors that affect the final quality of frozen dough, including yeast activity, dough structure and dough properties. Some effective methods for improving freeze tolerance of yeast, dough structure and dough properties are discussed, including addition of various additives, use of genetic engineering technique, optimization of freezing and storage conditions, and employment of novel freezing technology.Key findings and conclusionsThe addition of additives can not only improve the freeze tolerance of yeast but also maintain the rheological and thermophysical properties of dough. Through the modification of gene, freeze tolerance and fermentation ability of yeast can be improved. Optimizing freezing and storage conditions ensures the activity of yeast as well as dough network structure so that freezing damage due to ice crystals can be minimized. In addition, novel freezing technology such as ultrasound-assisted freezing can simultaneously accelerate the freezing process as well as generate fine and uniform ice crystals, thus protecting dough network structure. 相似文献
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应用F3 流变发酵仪和动态流变仪研究冰结构蛋白(ISP)对冻藏0、1、2、3、4 周鲜酵母发酵特性和冷冻面团动态流变学特性的影响。结果表明:随着冻藏时间延长,所有酵母样品发酵过程中气体释放曲线最大高度H′m、产生CO2 气体总体积V总及面团最大膨胀高度Hm 均逐渐降低,冷冻面团的弹性模量(G′)和黏性模量(G 〞)逐渐下降,冷冻面团包子比容显著减小。引入冰结构蛋白(ISP)后,冻藏时间相同时,酵母发酵过程中的H′m、V 总及Hm 均有所增大,G′和G 〞下降趋势减缓,冷冻面团包子比容明显大于空白组,说明ISP 能够抑制冻藏过程中冰晶的形成和重结晶,减弱冰晶对酵母及面筋蛋白质网络结构的破坏,同时也说明ISP 能够增强面筋蛋白质网络结构的强度,提高面筋蛋白质对冰晶破坏的抵抗力。 相似文献
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为探究冻藏时间对冷冻面团馒头品质的影响,本文通过采用酵母菌活性测定、馒头质构特性测定、面筋蛋白二级结构测定、扫描电镜观察等方法,从宏观和微观的角度上分析了冻藏时间的延长对冷冻面团馒头品质的影响。结果表明,随着冻藏时间的延长,酵母菌数量及存活率均呈下降趋势,其中冻藏1周后,表面和内芯的酵母菌数量均减少5.8 lg CFU/g;经过5周冻藏后,冷冻面团馒头的硬度、咀嚼性、胶着性分别增大74.6%、75.7%、75.6%;面筋蛋白二级结构中α-螺旋也随着冻藏时间的延长呈下降趋势,蛋白二级结构稳定性逐渐下降;经过扫描电镜观察发现,面筋网络结构逐步减少,淀粉颗粒与面筋结构分离,部分淀粉颗粒完全裸露。因此表明冻藏时间的延长,会导致冷冻面团馒头品质下降。本研究结果为后续提高冷冻面团馒头品质应用研究提供理论依据。 相似文献
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Sayyed-Vahid Ayati Nasser Hamdami Alain Le-Bail 《International Journal of Food Properties》2017,20(4):782-791
The impact of pre-fermentation time and freezing rate on Sangak frozen dough and bread quality were studied. The pre-fermented doughs for 0, 30, 60, 90, or 120 min were frozen under –20, –25, or –30°C in air blast freezer. After 24 h storage at –18°C, dough samples were baked after final fermentation. The yeast viability, gassing power, and dough development for fresh and frozen Sangak doughs were determined. Crust color, density, and shear stress of bread obtained from fresh and frozen Sangak dough were evaluated. The results showed that yeast survival initially increased and then decreased with increasing freezing rate. The maximum yeast survival was observed at short pre-fermentation (30 min). A direct relationship was observed between gassing power, dough development, and yeast viability. From bread quality point-of-view, short pre-fermentation and higher freezing rate led to a more desirable bread. 相似文献