共查询到20条相似文献,搜索用时 234 毫秒
1.
鱼糜制品因具有调理简便,细嫩味美,耐储藏等特点,深受消费者喜爱。鱼糜制品的凝胶特性是衡量其品质的主要指标。热处理方式会影响鱼糜蛋白的展开和聚集状态;漂洗、斩拌、擂溃、高压等加工工艺通过影响鱼糜蛋白质的变形和聚集,从而影响鱼糜制品的凝胶强度;不同种类的外源添加剂可与鱼糜蛋白质相互作用,促进鱼糜的凝胶化,稳定鱼糜凝胶的三维网络结构。该文主要从热处理方式、加工工艺及添加剂种类、作用机制等方面综述鱼糜凝胶影响因素的研究进展,旨在为鱼糜产业发展及技术升级提供理论参考。 相似文献
2.
为改善高温杀菌鱼糜制品的品质,研究羊血浆蛋白对121℃处理鱼糜制品凝胶特性的影响。以白鲢鱼糜为原料,测定羊血浆蛋白的添加对鱼糜凝胶质构特性、凝胶强度、持水性、折叠性、白度和流变特性的影响,并通过测定分子间作用力和溶解率的变化探究其影响机制。结果表明,与对照组相比,随着羊血浆蛋白的添加,高温处理鱼糜制品的硬度、弹性、胶粘性和咀嚼性显著增大(P<0.05),持水性显著增强(P<0.05),折叠性能增强,白度降低。当添加量为2%时,鱼糜制品的凝胶强度增加了92.88%。分子间作用力和溶解率分析显示,添加羊血浆蛋白能够提高体系氢键和非二硫共价键含量,从而改善高温处理鱼糜制品凝胶品质。 相似文献
3.
凝胶特性是鱼糜制品品质的决定性因素之一。鱼糜制品是典型的多相、多组分食品体系,蛋白、多糖、脂质等主要组分间的相互作用是鱼糜凝胶网络结构形成的基础,并最终决定产品品质。目前鱼糜混合体系中多组分间的作用机制及其对鱼糜复合凝胶品质的影响机制尚未明确,制约其加工技术以及理论的创新。本文基于鱼糜凝胶的形成机理以及影响因素,综述蛋白类、多糖类、脂质类、多酚等外源添加物对鱼糜热诱导凝胶特性的影响,总结鱼糜组分间的作用规律及其对凝胶特性的影响规律,为新型鱼糜制品开发和凝胶品质调控提供理论依据。 相似文献
4.
5.
6.
鱼糜及鱼糜制品中富含多不饱和脂肪酸和蛋白质,在冷藏鱼糜及鱼糜制品贮藏和运输中极易发生脂肪氧化和蛋白质氧化,使风味、品质以及凝胶特性降低。抗氧化剂可以有效抑制鱼糜及鱼糜制品脂肪和蛋白质的氧化。天然抗氧化剂相对于化学合成抗氧化剂具有更安全、更高效等优点。因此,在鱼糜及鱼糜制品中添加天然抗氧化剂是一种更为安全可接受的抗氧化手段,能有效抑制蛋白质降解、脂肪氧化、腥味增加及微生物引起的腐败变质等问题,从而有效提高产品品质、风味和凝胶特性。本文主要综述了天然抗氧化剂的种类、来源、抗氧化作用机理以及其对鱼糜及鱼糜制品的影响等,可为天然抗氧化剂在鱼糜产品中的应用提供参考。 相似文献
7.
8.
为提高高温杀菌鱼糜制品的品质,研究可得然胶添加量对120℃杀菌白鲢鱼糜凝胶特性的影响。通过测定可得然胶-鱼糜复合凝胶的动态流变性质、破断力、破断距离、凝胶强度、凝聚性、咀嚼性、色度、持水性、TCA-可溶性肽和SDS-PAGE电泳等指标,探究可得然胶对鱼糜流变特性、质构特性、色度、持水能力和蛋白组成的影响。结果表明,添加可得然胶可以提高鱼糜凝胶的流变特性,显著减少TCA-可溶性肽含量(P0.05),从而提高鱼糜凝胶的热稳定性和持水性。可得然胶对鱼糜蛋白组成没有影响,但会降低其白度值。可得然胶添加量为6g/kg时,改善鱼糜凝胶品质的效果最好,能显著增强鱼糜的凝胶强度和流变特性(P0.05)。 相似文献
9.
10.
低温冷链贮藏对鱼糜凝胶化学作用力和肌原纤维蛋白结构及功能特性的影响 总被引:1,自引:0,他引:1
为研究低温冷链对鱼糜肌原纤维蛋白和凝胶化学作用力的影响。本实验以鱼糜为研究对象,测定了低温冷链贮藏时间对肌原纤维蛋白功能基团、二级结构、三级结构和凝胶化学作用力的影响,并进一步通过主成分分析和相关性分析探究凝胶化学作用力与肌原纤维蛋白之间的关系。结果表明,贮藏过程中鱼糜盐溶性蛋白含量、Ca2+-ATPase活力和总巯基含量呈下降趋势,而羰基含量上升。此外,蛋白质二级结构由有序向无序转变,肌原纤维蛋白荧光强度下降,说明蛋白极性环境发生改变。揭示了肌原纤维蛋白中的活性基团与凝胶化学作用力的形成密切相关。因此,在贮藏初期防止蛋白氧化和冷冻变性是维持鱼糜凝胶化学作用力,保持鱼糜凝胶特性的有效途径。本研究可为鱼糜在低温冷链贮藏过程中的品质保持提供基础理论支持。 相似文献
11.
The paper examines the effect of High Pressure Processing (HPP) (300 MPa), the incorporation of microbial transglutaminase (MTGase) and the addition of different additives such as lysine and cystine, as potential enhancers of low-salt (0.3%) surimi gel. Effects on myosin as the molecule responsible for gelation was monitored by Fourier transform infrared spectroscopy, Sodium dodecyl sulfate–polyacrylamide gel electrophoresis (SDS–PAGE), and dynamic rheometry measurements. The effects on physicochemical properties of surimi gels were determined by Folding and Puncture tests and water holding capacity.Results indicated an increase in β-sheet when HPP was applied or additives added (cystine and lysine), especially when samples are treated with MTGase. Protein aggregation due to HPP and the additives resulted in lower myosin heavy chain (MHC) band density in the SDS–PAGE. Rheometry measurements indicated that MTGase activity was prompted by the incorporation of cystine and lysine in the absence of HPP. Also, HPP assisted gelation, resulting in improved mechanical properties of the gels. Samples containing additives, with or without HPP, exhibited the highest Folding test scores, indicating greater network flexibility. Lastly, water binding capacity was also enhanced by both additives and HPP.Industrial relevanceThe industrial relevance of the present work is focused on the appropriated gelation of myofibrillar proteins which is an essential step in the elaboration of surimi-based products. Sodium chloride has an important role in that fact inducing protein unfolding and solubilization. The reduction in NaCl content, following the NAOS strategy, required the application of different technologies to facilitate surimi adequate gelation. High-pressure processing has been commonly used as an innovative technology to prolong shelf life but it can be successfully used to induce proteins gelation. Due to that ability, the use of high pressure on surimi-based products result an interesting tool to facilitate surimi gelation. The use of Microbial transglutaminase (MTGase) alone or in combination with some aminoacids such as lysine and cystine can significantly improve surimi gelation added in a very small proportion. 相似文献
12.
鱼糜制品(鱼丸、鱼糕、蟹肉棒等)因为其健康营养、方便快捷等特点而深受消费者欢迎,具有广阔的市场前景。鱼糜制品是基于鱼糜肌原纤维蛋白的胶凝性能所形成的弹性凝胶体,其加工工序包括斩拌、加热、添加外源物等。因此,鱼糜肌原纤维蛋白在典型加工条件下发生结构以及功能特性的变化会影响鱼糜制品的品质。本文主要综述了鱼糜肌原纤维蛋白在物理场(加热、斩拌)、化学场(pH值、离子强度)、生物场(酶、微生物)等典型加工条件下的结构及功能特性变化规律及调控方法,以期为进一步发展鱼糜制品加工业提供理论依据。 相似文献
13.
14.
15.
Surimi is an important element of the aquatic deep processing industry.The gel property of surimi is an key factor for evaluating the character of surimi products.How to improve the gel properties in surimi processing is a focus issue nowadays.This article summarized the formation,influencing factors and ways of enhancing the gelation of surimi. 相似文献
16.
17.
鱼糜制品是一类以鱼碎肉或鱼糜为原料,经擂溃、成型、凝胶化等过程制成的凝胶状食品.漂洗、冷冻、加热等工艺均导致鱼糜制品不同程度的营养流失.本文首先阐述了造成鱼糜制品营养损失的原因,在此基础上,对通过改善加工工艺减少鱼糜制品的营养流失,以及外源添加物在制备营养强化型鱼糜制品中的应用现状及发展趋势进行介绍,旨在为制备营养强化... 相似文献
18.
19.
鱼糜是我国低值淡水鱼深加工的主要研究方向之一,但由于低值淡水鱼个体小、刺多,现有工艺得率低,而pH-shifting技术能显著提高低值鱼鱼糜得率,且凝胶强度更好或相当。因此,该技术被认为是很有工业化前景的鱼糜加工新技术。本文综述了近年来的研究进展,包括pH-shifting工艺对鱼糜蛋白组成、鱼糜蛋白质分子结构、鱼糜胶凝特性、蛋白降解、蛋白交联及鱼糜凝胶微结构的影响。并提出以下观点:可采用蛋白质组学方法研究pH-shifting工艺对鱼糜蛋白质组成的影响,解析各蛋白组分在胶凝过程中的作用;pH-shifting鱼糜凝胶是蛋白聚集体与未变性蛋白的混合凝胶,可从共混胶凝、微相分离的角度研究pH-shifting鱼糜凝胶微结构形成机制。 相似文献
20.
Effect of rainbow trout (Oncorhynchus mykiss) plasma protein on the gelation of Alaska pollock (Theragra chalcogramma) Surimi 总被引:1,自引:0,他引:1
ABSTRACT: The effect of rainbow trout plasma protein (RPP) on the gelation of Alaska pollock surimi was determined to evaluate the possibility of its commercialization as a new protein additive. For modori gel, the breaking force, deformation, whiteness, and water holding capacity increased as the addition amount of RPP (0 to 0.75 mg/g) increased, and decreased at higher concentration of RPP (0.75 to 1.50 mg/g) ( P < 0.05). Protein solubility of modori gel in the mixture of SDS, urea, and β-mercaptoethanol decreased as the addition amount of RPP increased up to 0.75 mg/g, and increased at higher concentration of RPP (0.75 to 1.50 mg/g) ( P < 0.05). The contents of trichloroacetic acid-soluble peptide decreased as the addition amount of RPP (0 to 1.50 mg/g) increased ( P < 0.05). Based on the result of sodium dodecyl sulfate (SDS)-polyacrylamide gel electrophoresis (PAGE), most myosin heavy chain of surimi was not degraded when RPP was added. Thus, RPP was supposed to act as a protease inhibitor in the gelation of Alaska pollock surimi. An RPP of 0.75 mg/g was the optimal concentration to prevent the gel weakening of Alaska pollock surimi. Compounds with molecular weights less than 10 kDa in RPP had no significant effect on the gelation of Alaska pollock surimi based on the result of the dialyzed RPP. 相似文献