共查询到19条相似文献,搜索用时 187 毫秒
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谷朊粉是从小麦淀粉中提取出来的天然蛋白,因其具有优良的黏弹性、延伸性、乳化性和吸水性等而被广泛应用于食品工业和饲料工业。本文对谷朊粉的特性、生产、应用及研究热点作了简要综述。 相似文献
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湿热处理提高谷朊粉乳化性的研究 总被引:11,自引:2,他引:11
以谷朊粉为原料,研究了利用湿热处理对谷朊粉乳化性的改善作用,通过pH值、谷朊粉质量分数、加热温度及时间对谷朊粉乳化性的影响,确立了4因素3水平的正交实验,探讨了湿热处理提高谷朊粉乳化性的最佳条件。结果表明:各因素对提高谷朊粉乳化性的明显程度依次为:pH值>谷朊粉质量分数>温度>时间。正交试验分析表明,湿热处理提高乳化性的最佳作用条件为:pH值为4.0、谷朊粉质量分数为9.0%、时间为20min和温度为100℃。在最佳条件下,谷朊粉的乳化活性及乳化稳定性均为100%,溶解度为48.4%。说明湿热处理显著提高了谷朊粉的乳化性。 相似文献
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微波处理提高谷朊粉乳化性的研究 总被引:10,自引:1,他引:10
以谷朊粉为原料,研究了利用微波处理对谷朊粉乳化性的改善作用,通过pH值,谷朊酚浓度,微波能量及加热时间对谷朊粉乳化性的影响,确立了四因素三水平的正交实验,探讨了微波处理提高谷朊酚乳化性的最佳条件。结果表明:各因素对提高谷朊粉乳化性的明显程度依次为:加热时间>pH值>谷朊粉浓度>微技能量。正交试验分析表明,微波处理提高乳化性的最佳作用条件为:pH值=10.0、谷朊粉浓度=9.0%、加热时间=100和微波能量=560W。在最佳条件下,谷朊粉的乳化活性及乳稳定性均为100%,溶解度=37.6%。说明微波处理显著提高了谷朊粉的乳化性。 相似文献
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马铃薯全粉在面条中的应用研究 总被引:1,自引:0,他引:1
将马铃薯全粉添加到小麦粉中,并辅助添加谷朊粉,制成马铃薯全粉面条。从质构特性、微观结构和面条的理化性质三个层面对三个不同马铃薯全粉添加比例的面条组别进行研究,发现马铃薯全粉对面团的力学性质,面筋网络的形成和构造以及面条的蒸煮参数和外观都会产生一定的影响。结果表明:马铃薯全粉添加量为20%(g/g),谷朊粉添加为0.03%(g/g)时,总体指标最好;马铃薯全粉对面团的作用具有双向性,马铃薯淀粉对面团的影响偏负向,但是其中的多糖和蛋白质可能对面团和面筋网络有正向影响,同时谷朊粉的添加对面团的稳定性和面条的质量有改善作用。 相似文献
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目的 研究谷朊粉对冻干枣粉吸湿特性的影响。方法 将谷朊粉与枣浆按不同比例均匀混合,真空冷冻干燥后粉粹,过60目筛制备不同配比的冻干枣粉。结果 谷朊粉显著降低了冻干枣粉的平衡含水率(equilibrium moisture content,EMC)。吸湿等温结果表明,红枣与谷朊粉质量比10:0、7:3、1:1、3:7样品的吸湿等温类型属“J”型增长,而0:10样品的属“S”型增长,表明谷朊粉的添加并未改变冻干枣粉吸湿等温类型;接触角随着谷朊粉的添加量的增大而增大,其值从31.22°增大到76.7°,说明谷朊粉可以减弱冻干枣粉的表面润湿性。从宏观和扫描电镜图中可知,冻干枣粉结块现象随着谷朊粉的添加量的增大而逐渐减轻。低场核磁结果显示,谷朊粉降低自由水的含量,减少水分向高自由度方向的迁移程度。结论 一定量的谷朊粉能够有效抑制冻干枣粉的吸湿,从而缓解结块的发生,保持流动性和分散性,进而提高冻干枣粉的品质。 相似文献
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Effective food packaging that can protect foodstuffs from physical, chemical, and biological damage and maintain freshness and quality is essential to the food industry. Wheat gluten shows promise as food packaging materials due to its edibility, biodegradability, wide availability, low cost, film-forming potential, and high resistance to oxygen. The low mechanical properties and poor water permeability of wheat gluten coatings and films limit their wide applications; however, some inferior properties can be improved through various solutions. This work presents a comprehensive review about wheat gluten–based coatings and films, including their formulation, processing methods, properties, functions, and applications. The mechanical and water resistance properties of coatings and films can be reinforced through wheat gluten modification, combinations of different processing methods, and the incorporation of reinforcing macromolecules, antioxidants, and nanofillers. Antioxidants and antimicrobial agents added to wheat gluten can inhibit microbial growth on foodstuffs, maintain food quality, and extend shelf life. Performances of wheat gluten–based coatings and films can be further improved to expand their applications in food packaging. Current research gaps are identified. Future research is needed to examine the optimal formulation and processing of wheat gluten–based coatings and films and their performance. 相似文献
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In the N.W.-European wheat growing system high levels of nitrogen fertiliser are applied. Especially late nitrogen applications are thought to increase the amount of soluble proteins, leading to extra losses and wastage. On the other hand, protein content is the most important factor determining gluten yield. The effects of fertilisation on processing quality have been investigated using a pilot separator. Samples from fertilisation trials show a high correlation between gluten yield and protein content of the flour. This relation is variety dependent, due to differences in water-soluble proteins. For both varieties the percentage of water-soluble proteins appeared to decrease with increasing N-fertilisation levels. At low protein contents of the flour the coagulation of the gluten is adversely influenced. Using soft bread wheats, this may cause severe difficulties during separation. At high fertilisation levels the amount of solubles in the waste water increased slightly. - A review on research results is made, showing the criteria for wheat for the starch industry. 相似文献
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近红外光谱(NIRS)技术是当前发展最快、最具前景的现代无损分析技术之一。NIRS技术融合了计算机、光学、数学、化学和化学计量学等多个学科的最新研究成果,具有简便、快速、低成本、无污染、不接触等优点,目前被广泛应用于食品品质分析与检测研究。本文综述了近十年来NIRS技术在小麦粉理化指标(如水分、灰分、蛋白质、淀粉)、粉质指标(如面筋、面筋指数分、沉降值、吸水量、形成时间、稳定时间、弱化度)及掺杂物(如甲醛次硫酸氢钠、滑石粉、过氧化苯甲酰、石灰、偶氮甲酰胺、曲酸)等方面的检测研究进展。同时,基于当前研究进展,NIRS技术在光谱数据挖掘、建模算法优化、模型稳健性等方面还需大量研究,为研发小麦粉质量快速无损检测设备提供更多数据支撑和方法参考。 相似文献
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本文阐述了面头粉掺入面粉对面筋品质和挂面品质的影响,通过实验得到一些规律。就面头粉的掺入比例,制面工艺条件和面头粉粒度等方面进行了一些探讨,对生产实际有指导意义。 相似文献