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水产品蛋白质含量较高且口感及风味独特,极大丰富了消费者的日常饮食。然而水产品捕捞后贮藏期间易腐败变质,低温保藏是最主要的保鲜方式之一。但是低温会造成其主要营养成分——蛋白质的损伤从而导致品质下降。为提高低温保鲜效果,减少贮藏过程中的蛋白质损伤,可利用低温保鲜技术与辅助技术联用来提高水产品品质的稳定性。该文阐述低温对水产品蛋白质结构与功能的影响,总结低温保鲜过程中蛋白质品质的调控方法,以期为水产品的贮藏保鲜技术提供理论依据。 相似文献
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目的:探究低温等离子体处理对新疆‘小白杏’后熟衰老、贮藏期果实品质、氧化酶系活力等方面的影响。方法:用低温等离子体机分别在80、90、100 kV的工作电压下处理新疆‘小白杏’40 s,于4 ℃、相对湿度95%的条件下贮藏42 d,每7 d检测杏果腐败指数、品质指标和抗氧化酶活力。结果:各低温等离子处理杏果保鲜效果均明显高于对照组,其中90 kV、40 s低温等离子体处理的防腐效果最为显著,贮藏第42天处理组腐败指数仅为对照组的24%,杏果的硬度为对照组的近1.5 倍,VC含量和多酚含量分别是对照组的1.4、1.2 倍,超氧化物歧化酶、过氧化氢酶、过氧化物酶活力分别提高了18%、28%和23%。结论:低温等离子体处理可降低采后杏果腐败指数,提高采后杏果贮藏期间的品质,并可以诱导杏果抗氧化酶活力提升。 相似文献
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水产品中蛋白质、水分、脂肪含量丰富,容易引起氧化和微生物繁殖导致腐败变质,因此水产品贮藏保鲜技术是水产领域的重要研究方向之一。香辛料作为一种新型、健康、无副作用的生物保鲜剂,对水产品具有明显的抑菌及抗氧化作用,进而能保持水产品的贮藏品质并延长其货架期,在水产品的保鲜及贮运上具有巨大的潜在应用价值。本文主要介绍了香辛料对水产品保鲜的作用机制,尤其论述了香辛料在水产品贮藏保鲜应用中的最新研究进展,并分析了目前存在的问题,同时对其应用前景进行了展望。 相似文献
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采用单因素和Box-Behnken响应面试验优化低温等离子耦合微酸性电解水对三文鱼杀菌的工艺条件,通过菌落总数、pH值、挥发性盐基氮(TVB-N)、硫代巴比妥酸反应产物(TBARS)值、羰基含量和色差等指标比较等离子体活化水、微酸性电解水及低温等离子体耦合微酸性电解水对三文鱼4℃贮藏的保鲜效果。结果显示,当低温等离子体活化时间5 min,功率320 W,浸泡时间20 min,有效氯质量浓度50 mg/mL,料液比1∶6时杀菌效果最优,均可延长三文鱼贮藏期,而低温等离子体耦合微酸性电解水更有利于缓解脂肪和蛋白氧化。本研究为水产品保鲜提供了新思路。 相似文献
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水产品在实际运输贮藏销售环节,易受到环境温度、微生物等因素影响而导致腐败变质,造成资源浪费、环境污染等问题。微冻保鲜能有效抑制微生物生长、维持食品原有风味。但是其温度控制严格,单一的微冻保鲜不能很好地延长水产品货架期,因此常采用微冻与其他技术结合的保鲜技术,以更好地发挥栅栏效应。该文综述了水产品腐败机理及品质变化、单一微冻保鲜应用,微冻与抗冻剂、气调、涂膜、静电场等联合对水产品保鲜的最新应用,并对微冻保鲜存在的问题作出总结与展望。旨在为微冻保鲜技术的进一步优化做铺垫,为水产品保鲜应用提供参考。 相似文献
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干燥是当今应用广泛、传统的水产品加工技术。通过不同加工原理,可以有效降低水分含量,抑制微生物的生长,提高水产干制品的色泽和风味,增加高值化加工价值。本文通过调查研究,分析不同水产品干燥方式,说明不同干燥方式的原理及优缺点。并且从营养品质角度,分析干燥过程对水分、蛋白质、脂质品质的影响;从感官品质方面,分析其对风味、滋味、质构和色泽方面的影响,旨在从营养和感官品质两个方面分析干燥工艺对水产品品质的影响,为水产干制品的发展提供技术支撑。 相似文献
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低温贮藏和解冻过程对鱿鱼品质的影响研究进展 总被引:3,自引:0,他引:3
鱿鱼是我国重要的远洋渔业捕捞对象,捕捞后需要及时进行船上冻结,因此,冷冻鱿鱼是各类鱿鱼制品生产的主要原料。低温贮藏尤其是冻藏是目前广泛应用的一种保鲜方法,冷冻水产品在加工前必须进行解冻,鱿鱼在低温贮藏和解冻过程中会发生汁液流失,影响其营养价值,导致品质劣变。冷冻水产品最终品质的好坏不仅取决于冷冻方法、冻藏温度、温度波动,还和后续的解冻方式有关。本文综述了鱿鱼在低温贮藏和解冻过程中发生的物理化学变化,主要从水分含量、蛋白质变性及氧化、脂质氧化、色泽、p H值和微生物组成及特定腐败菌等几个方面进行了阐述,旨在为水产加工企业在鱿鱼保鲜加工方面提供理论参考。 相似文献
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水产品因其味道鲜美、富含蛋白质、必需氨基酸、多不饱和脂肪酸及微量元素而备受消费者青睐。低温贮藏是水产品最常见的贮藏手段,然而水产品肌肉组织薄、水分含量高、蛋白含量高等特点使其易在低温贮藏过程中出现汁液流失、蛋白质变性、脂质氧化、微生物生长繁殖等品质劣变现象。为充分探究水产品劣变机制,低场核磁共振技术(low field nuclear magnetic resonance, LF-NMR)、核磁共振成像技术(magnetic resonance imaging, MRI)、基于16S的二代高通量测序技术、蛋白质组学与脂质组学等新新技术逐步应用于水产品低温贮藏过程中水分迁移、微生物作用、蛋白质与脂质生物大分子氧化降解反应的研究中。基于水产品劣变现象及其机制的研究,水产品保鲜技术得以开发应用。水产品保鲜剂按性质可分为盐类保鲜剂、酚类保鲜剂、糖类保鲜剂、蛋白类保鲜剂等,因具有成本低廉、操作简便的优势而被广泛开发应用。本文对水产品贮藏过程中常见的劣变现象及其机理的研究进展进行了综述,总结了水产品保鲜剂的研发现状,并对未来水产品劣变机制研究与水产品保鲜剂的发展前景进行了展望,以期为水产品保鲜剂的开发利用提供参考。 相似文献
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Recent developments in high-quality drying of vegetables,fruits, and aquatic products 总被引:2,自引:0,他引:2
Min Zhang Huizhi Chen Arun. S. Mujumdar Juming Tang Song Miao Yuchuan Wang 《Critical reviews in food science and nutrition》2017,57(6):1239-1255
Fresh foods like vegetables, fruits, and aquatic products have high water activity and they are highly heat-sensitive and easily degradable. Dehydration is one of the most common methods used to improve food shelf-life. However, drying methods used for food dehydration must not only be efficient and economic but also yield high-quality products based on flavor, nutrients, color, rehydration, uniformity, appearance, and texture. This paper reviews some new drying technologies developed for dehydration of vegetables, fruits, and aquatic products. These include: infrared drying, microwave drying, radio frequency drying, electrohydrodynamic drying, etc., as well as hybrid drying methods combining two or more different drying techniques. A comprehensive review of recent developments in high-quality drying of vegetables, fruits and aquatic products is presented and recommendations are made for future research. 相似文献
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冷链流通过程中水产品低温保鲜技术研究进展 总被引:2,自引:0,他引:2
如何较好地维持水产品的鲜度和营养价值一直是研究的热点。目前的水产品流通过程中,低温保鲜仍是最常用的保鲜技术。本文介绍了影响冷链储运过程中水产品品质的因素,对冷藏、冷海水、冰温、微冻、冻藏等低温保鲜技术的原理、特点以及最新研究进展进行综述。指出了它们在冷链流通中存在的技术问题,并对未来低温保鲜的发展趋势作出展望。 相似文献
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Abstract: Stability of enzymes such as β‐galactosidase (β‐gal), β‐glucosidase (β‐glu), lactate dehydrogenase (LDH), pyruvate kinase (PK), hexokinase (HK), and ATPase of microencapsulated Bifidobacterium animalis ssp. lactis Bb12 after freeze‐drying and after 10 wk of storage at low water activity (aw) at room temperature was studied. Bacteria were microencapsulated using alginate formulation with or without mannitol fortification (sodium alginate and mannitol [SAM] and sodium alginate [SA], respectively) by creating gel beads followed by freeze drying. Two types of dried gel beads were then stored at low aw, such as 0.07, 0.1, and 0.2; storage in an aluminum foil was used as control. All storage was carried out at room temperature of 25 °C for 10 wk. Measurement of β‐gal, β‐glu, LDH, PK, HK, and ATPase (with or without exposure to pH 2.0 for 2 h) activities was carried out before freeze drying, after freeze drying, and after 10 wk of storage. There was a significant decrease in almost all enzyme activities, except that of PK. SAM and SA showed no different effect on maintaining enzyme activities during freeze drying. Storage for 10 wk at room temperature at various low aw using SAM and SA system had a significant effect on retention of most enzymes studied, except that of PK and LDH. Storage at aw of 0.07 and 0.1 was more effective in maintaining enzyme activities than storage at aw of 0.2 and in an aluminum foil. However, mannitol fortification into alginate system did not significantly improve retention of enzymes during 10 wk of storage. 相似文献
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Faezeh Fathi Samad N. Ebrahimi Luís Carlos Matos M. Beatriz P. P. Oliveira Rita C. Alves 《Comprehensive Reviews in Food Science and Food Safety》2022,21(2):1125-1160
The new trends in drying technology seek a promising alternative to synthetic preservatives to improve the shelf-life and storage stability of food products. On the other hand, the drying process can result in deformation and degradation of phytoconstituents due to their thermal sensitivity. The main purpose of this review is to give a general overview of common drying techniques with special attention to food industrial applications, focusing on recent advances to maintain the features of the active phytoconstituents and nutrients, and improve their release and storage stability. Furthermore, a drying technique that extends the shelf-life of food products by reducing trapped water, will negatively affect the spoilage of microorganisms and enzymes that are responsible for undesired chemical composition changes, but can protect beneficial microorganisms like probiotics. This paper also explores recent efficient improvements in drying technologies that produce high-quality and low-cost final products compared to conventional methods. However, despite the recent advances in drying technologies, hybrid drying (a combination of different drying techniques) and spray drying (drying with the help of encapsulation methods) are still promising techniques in food industries. In conclusion, spray drying encapsulation can improve the morphology and texture of dry materials, preserve natural components for a long time, and increase storage times (shelf-life). Optimizing a drying technique and using a suitable drying agent should also be a promising solution to preserve probiotic bacteria and antimicrobial compounds. 相似文献