共查询到19条相似文献,搜索用时 46 毫秒
1.
作为新兴的非热加工前沿技术,超高压食品加工已成为现代健康食品制造领域的研究热点.将其应用于优化食品酶催化体系,对指导现代食品生物加工具有重要意义.基于高静压加工优化食品酶催化体系研究已有几十年,将其成果加以总结,并分析存在的问题,有利于更好地促进现代食品加工的发展.本文综述了高静压加工优化食品酶催化体系的发展现状,分析提炼了科学问题,在此基础上提出本领域若干研究方向,期望能对相关领域研究者有所启发. 相似文献
2.
超高压对食品中的酶的影响 总被引:24,自引:1,他引:24
综述了超高压技术在国内外的最新研究成果及动态,其中着重谈到了超高压技术对于酶的灭活及激活作用,并对过氧化氢酶,多酚氧合酶,果胶甲基酯酯,脂肪氧合酶,纤维素酶,木瓜蛋白酶等的超高压作用结果作了评述。 相似文献
3.
4.
5.
超高压食品是近些年来出现的一种新颖食品。它是利用超高压对食品进行处理达到杀菌延长贮存期的目的。由于它是在常温下提高压力进行食品加工的技术,故不会破坏食物中的维生素等多种低分子物质,能较好 相似文献
6.
国内外食品超高压加工技术 总被引:12,自引:0,他引:12
本文介绍国内外在超高压等静液压机上进行食品加工、保鲜、杀菌的原理,性能、适应范围和应用实例。并说明太平洋食品超高压等静压机的特点。 相似文献
7.
超高压食品加工装置综述 总被引:9,自引:0,他引:9
介绍了超高压食品技术及加工装置的特点及研究动向,讨论了这一技术的关键——食品加压设备的要求、结构特点及设计方法,给出了二种可行有效的超高压装置结构形式。 相似文献
8.
9.
应用于食品加工领域的超高压技术 总被引:5,自引:1,他引:5
超高压技术在化工领域里的应用研究已比较成熟,但在食品领域里的应用则是近几年才发展起来的。本文阐述了可应用于食品领域的超高压技术装备,并提出利用此项技术装备,可在食品领域的多个方面取得进展。 相似文献
10.
11.
Siwen XUE;Chang QIAN;Mengyao WANG;Xinglian XU 《肉类研究》2016,30(10):40-44
超高压加工技术是一项能够影响肉类凝胶功能特性的非热加工技术,肌球蛋白是肉类凝胶形成过程中起主要作用的蛋白质。虽然人们对于高压处理对肉类凝胶影响的机理研究不断深入,但是在肌肉与肌原纤维蛋白层面的研究常受限于其复杂的体系,因此针对单体蛋白的基础研究有助于对这一体系的进一步探索,从而更好地指导实践生产。该文着重于介绍高压处理对肌球蛋白凝胶形成过程机理的研究进展和存在的技术限制以及对未来的展望。 相似文献
12.
鲜切果蔬的品质在加工后易受到破坏,超高压技术(high pressure processing,HPP)在鲜切果蔬品质保持方面具潜力。旨在探究鲜切果蔬的硬度随压力变化的规律及硬度变化的机制。本文以胡萝卜为对象,研究了超高压(100~600 MPa,5 min)对鲜切胡萝卜硬度、细胞膜完整性、果胶甲酯酶(pectin methylesterase,PME)及细胞壁果胶组成的影响。100 MPa处理后胡萝卜硬度无显著变化,随着压力增加,胡萝卜相对电导率显著增加,硬度显著下降,当达到300 MPa后,尽管压力继续升高,相对电导率和硬度变化已不显著;同时,高压处理后碱溶性果胶(sodium carbonate soluble pectin,NSP)增加,水溶性果胶(water soluble pectin,WSP)下降,但高压不能充分钝化果胶甲酯酶。超高压处理后细胞膜透性的改变和细胞壁果胶组分的变化共同影响了鲜切胡萝卜的硬度。 相似文献
13.
在酶学领域中,超高压和温度类似,作为一种物理学方法,可以用来调节酶催化功能,促使酶的构象发生变化。对超高压调节酶催化功能的原理、影响酶构象的作用机制,以及一些新型研究方法等进行了综述。展望了此项新技术的发展前景。 相似文献
14.
高压食品加工技术及在乳制品中的应用 总被引:5,自引:0,他引:5
介绍了高压加工技术在食品方面应用的研究进展,其内容有:高压原理,装备和对微生物,蛋白质,酶的影响,高压乳及其制品的研究,作为国际热门食品加工方法的高压处理技术必将成为21世纪崭新的食品加工技术,在开发新产品方面有着广泛的应用前景。 相似文献
15.
Rastogi NK Raghavarao KS Balasubramaniam VM Niranjan K Knorr D 《Critical reviews in food science and nutrition》2007,47(1):69-112
Consumers increasingly demand convenience foods of the highest quality in terms of natural flavor and taste, and which are free from additives and preservatives. This demand has triggered the need for the development of a number of nonthermal approaches to food processing, of which high-pressure technology has proven to be very valuable. A number of recent publications have demonstrated novel and diverse uses of this technology. Its novel features, which include destruction of microorganisms at room temperature or lower, have made the technology commercially attractive. Enzymes and even spore forming bacteria can be inactivated by the application of pressure-thermal combinations, This review aims to identify the opportunities and challenges associated with this technology. In addition to discussing the effects of high pressure on food components, this review covers the combined effects of high pressure processing with: gamma irradiation, alternating current, ultrasound, and carbon dioxide or anti-microbial treatment. Further, the applications of this technology in various sectors - fruits and vegetables, dairy, and meat processing - have been dealt with extensively. The integration of high-pressure with other matured processing operations such as blanching, dehydration, osmotic dehydration, rehydration, frying, freezing / thawing and solid-liquid extraction has been shown to open up new processing options. The key challenges identified include: heat transfer problems and resulting non-uniformity in processing, obtaining reliable and reproducible data for process validation, lack of detailed knowledge about the interaction between high pressure, and a number of food constituents, packaging and statutory issues. 相似文献
16.
Dynamic or continuous high-pressure processing of fluid foods has drawn significant interest as a microbial reduction process in the past decade, and many attempts have been made to better understand the mechanisms involved in that reduction. This study was intended to provide insight into the contributions of thermal effects and differences in pressure release components in the inactivation of 2 vegetative pathogen analogs--the Gram-positive Listeria innocua and the Gram-negative Escherichia coli. Fluids containing microbial loads of 10(8) or greater were subjected to continuous high-pressure processing at 200 to 210 MPa. Without active cooling of the release components, all fluids experienced a temperature rise in excess of 70 °C, thus occluding any pressure-related effects for all release components. Active cooling of the valve bodies of the 2 valve-style release components (a conical disruption valve and a micrometering valve) allowed the temperature rise to be abated enough to isolate the effects unique to a given valve. In Tryptic soy broth trials, the mean inactivation levels of E. coli between valves were similar--5.16 log and 5.33 log for the micrometering and conical disruption valves, respectively. When repeated with L. innocua, a similar inactivation level was observed in the conical disruption valve (5.1 log) but not the micrometering valve (3.02). Listeria innocua trials were also repeated using fluid whole milk, which showed a lower levels of inactivation--2.04 log for the micrometering valve and 2.51 log for the conical valve. PRACTICAL APPLICATIONS: This paper compares some of the most common pressure release components used in continuous high-pressure processing and attempts to isolate the contributions of thermal effects from those of pressure and shear. This information is important to those seeking to compare and evaluate the effectiveness of a proposed set of process parameters for microbial inactivation. Further, the ability to reduce the extreme nature of the temperature rise has the potential to expand the use of process into more temperature sensitive products. 相似文献
17.
高压技术在食品工业中的应用研究 总被引:19,自引:3,他引:19
研究了常温下高压对不同食品素材的处理情况。从对微生物、维生素、酶、感官等几方面的影响来综合评定高压处理的效果。针对不同的素材设计了不同的处理方法。试验表明,果汁和蔬菜汁经高压处理后可以达到杀菌效果,而且Vc损失很少,残存酶活只有4%,色香味等感官指标不变.其综合效果明显优于热杀菌。动物性食品也能达到杀菌效果,并且产生了前所未有的愉快而独特的风味。 相似文献
18.
在悬浮液浓度为5%(w/v),温度为(20±2)℃时,对8种不同淀粉进行高压处理5 min使淀粉发生糊化,采用X射线衍射测试技术得到了各种淀粉完全糊化的压力:小麦淀粉和木薯淀粉约为500 MPa,玉米淀粉、荸荠淀粉、糯小麦淀粉和糯米淀粉均为550 MPa,糯玉米淀粉约为650 MPa,马铃薯淀粉为750 MPa. 相似文献
19.
高静水压处理技术是一种不需加热的食品保藏技术,将它与其它食品保藏技术联合应用不仅可以提高食品的安全性和稳定性,还可最大限度地保护食品中的营养成分.本文综述了高静水压杀菌与加热、pH值、抗菌素、气调包装、二氧化碳、脉冲电场及辐射联合在食品中的应用和研究进展. 相似文献