水产品的冷藏保鲜技术

水产品的保鲜方法主要有低温保鲜、高压保鲜、辐照保鲜、气调保鲜、生物保鲜等几大类,其中以低温保鲜法应用得最为广泛,研究得最为深入。根据目的和温度的不同,低温保鲜法又可分为冷藏保鲜和冷冻保鲜。目前,水产品的冷藏保鲜技术主要包括：冰藏保鲜技术、冷海水保鲜技术、冰温保鲜技术和微冻保鲜技术等几种。     

淡水鱼产品保鲜技术研究现状

淡水鱼产品中不饱和脂肪酸含量较高,比畜肉和禽肉更容易被氧化,且鱼体细菌繁多,容易引起鱼肉蛋白的腐烂变质,因此淡水鱼产品的防腐保鲜一直是食品行业内的热点研究课题。本文主要介绍目前国内外普遍采用的淡水鱼产品保鲜技术,主要包括低温保鲜技术、包装保鲜技术、辐射杀菌保鲜技术、涂膜保鲜技术以及化学方法保鲜技术。     

虾保鲜技术研究进展

随着渔业资源和作业结构的变化,虾类捕捞量迅速增加．为了提高虾类商品价值、出口创汇,延长渔船作业天数和提高生产效益,搞好第一线的海上保鲜工作至关重要。本文针对近年来国内外关于虾保鲜的研究现状,综述了低温冷冻保藏、气调保鲜、调节pH、辐射保鲜、添加保鲜剂、可食性涂膜和虾保鲜冰等虾保鲜技术的研究进展,最后展望虾保鲜技术的未来目标和发展趋势。     

水产品保鲜技术研究进展

从物理保鲜和化学保鲜两个方面综述了国内外对水产品保鲜技术的研究进展,以期为从事水产品保鲜技术研究和应用的人员提供借鉴。     

水产品保鲜技术研究进展

从物理保鲜和化学保鲜两个方面综述了国内外对水产品保鲜技术的研究进展，以期为从事水产品保鲜技术研究和应用的人员提供借鉴。     

国内外水产品保鲜技术研究进展

水产品因其脂肪含量低,蛋白质、维生素含量丰富等特点倍受消费者青睐。本文对气调保鲜、低温保鲜、辐照保鲜、化学保鲜等保鲜技术进行简要介绍,综述国内外研究现状,并指出了水产品保鲜中存在的一些问题以及未来发展趋势。     

水产品保鲜技术及其标准的现状与分析

水产品保鲜标准是水产品质量安全标准体系组成部分之一。水产品保鲜标准的基础是水产品保鲜技术,标准化对科技创新又有强有力的推动作用。加强水产品保鲜标准化,实现技术创新与标准化的结合,二者相互促进和转化,是我国渔业可持续发展的需要。回顾了水产品保鲜工艺技术和装备技术的研究进展,简要介绍了国内外水产品保鲜标准的现状,指出了目前国内水产品保鲜标准上存在的一些问题及今后发展方向。     

日本产产品保鲜技术的现状及研究概况

本文介绍日本水产品保鲜的现状及研究概况，着重介绍气调保鲜、超高压保鲜和深冷却保鲜技术。     

日本水产品保鲜技术的现状及研究概况

本文介绍日本水产品保鲜的现状圾研究概况,着重介绍气调保鲜、超高压保鲜和深冷却保鲜技术。     

切实加强机帆渔船保鲜技术研究

上海市郊县渔业主管部门，为加强机帆渔船鱼货保鲜技术，于八月初，邀请了有关科研、生产部门，就市郊机帆船鱼货保鲜试验效果召开了座谈会。会上对近几年来市郊渔业社、队，在加强保鲜技术设施，提高机帆船鱼货质量作了肯定。     

复合尼泊金酯保鲜青鱼片的初步研究

以复合尼泊金酯为主,结合磷酸盐等物质复配了一种青鱼片的保鲜剂,使用该保鲜剂后,青鱼片可以在1星期内不变质,鱼肉具有比较好的持水性,且鱼肉仍然具有较好的口感,因此该保鲜剂可以应用到青鱼片的保鲜。     

高铁酸盐复合剂在水质净化和鱼病防治上的应用

高铁酸盐是近年来国际上流行的环保型消毒杀菌剂，己被广泛应用于工业工程水处理，饮用水，农牧渔业上杀菌、除藻、防腐、保鲜等方面。作者将高铁酸锶复合剂应用于虾、蟹、鳗、鳜、鲈等饲养，在大面积推广中取得了良好的效果。本文着重介绍该合剂的作用原理，以期在渔业上得到更好的应用。     

高水分扇贝调味干制品保质栅栏的模式及其强度

运用栅栏效应理论,设置多个强度缓和的保质栅栏的交互效应,阻止微生物的生长发育,避免了单一高强调防腐方法对产品感官质量等方面造成的不良影响,研究开发的高水分扇贝调味干制品在Ａｗ〉０．９０时,仍非制冷可贮,口感柔软,能充分体现扇贝的鲜美 风味,较好地保持了鲜品的色泽和外观,卫生安全性得到进一步保证,经济效益提高。本文探讨了高水分扇调味干制品的保质栅栏模式,着重对各栅栏因子的强度进行了选择。     

Seabream GnRH: partial cDNA cloning, localization and stage-dependent expression in the ovary of snake head murrel, Channa striatus

Vertebrate reproduction is under the neuroendocrine control of the hypothalamic decapeptide GnRH which synchronizes various reproductive events and influences other reproduction related aspects like spawning behavior and pheromonal action in fish. Multiple forms of GnRH peptides have been reported across diverse vertebrate and invertebrate classes. Here we report the partial seabream GnRH (sbGnRH) cDNA sequence cloned from the brain of Channa striatus (snake head murrel) a fresh water perciform with immense economic and medicinal value across Asiatic countries. sbGnRH mRNA was found in brain, gill and ovary of mature murrel with possible implications to the effect of GnRH on pheromonal phenomena and on reinitiation of oocyte meiosis. In keeping with the earlier reported role of GnRH in initiation of oocyte meiosis we here present evidence from RT-PCR, ICC demonstrating an increase in the level of sbGnRH mRNA in ovary from pre-vitellogenic to post-vitellogenic follicles.     

Straying of Atlantic salmon, Salmo salar, from delayed and coastal releases in the Baltic Sea, with special focus on the Swedish west coast

Abstract  Atlantic salmon, Salmo salar L., reared from two Baltic strains were released around the islands Bornholm and Møn in the Baltic Sea between 1995 and 1999. A total 600 000 reared salmon were released from net pens using the delayed release technique, keeping the salmon in net pens for approximately 3 months after smolting, and 208 000 were released directly from the hatchery. Of these, 15 958 were tagged with Carlin tags. Additionally, 65 300 coded wire tagged salmon were released as delayed release salmon close to Bornholm in 2000. Recaptures from the five years of Carlin tagged releases varied between 2.8% and 21.2% (average 13.1%). Most recaptures were from within the Baltic Sea (average 98%), but some were recaptured outside the Baltic Sea, either in the sea (1%) or in fresh water (1%). Recaptures outside the Baltic Sea and in fresh water were higher for releases at Møn in the western part of the Baltic, than releases at Bornholm. Straying rates from the releases into six rivers on the Swedish west coast were estimated using information from capture in traps and sport and broodstock fisheries. The proportion of straying salmon in rivers on the Swedish west coast was about 3.8% of the salmon run, but with large variations between rivers. Releases were discontinued because of possible deleterious effect on the local wild salmon populations.     

淡水有核珍珠的固核措施及其存在问题

以三角帆蚌（ＨｙｒｉｏｐｓｉｓＣｕｍｉｎｇｉｉＬｅａ）为材料，对淡水有核珍珠的团核措施进行了研究。实验中分别采用麻醉剂注射、倒膜、捆固双壳、针刺腹足、粘合剂粘合伤口等固核措施，通过对伤口愈合后育珠蚌的固核率进行统计分析，结果表明采用麻醉剂注射与倒膜两种措施后，育珠蚌固核率明显提高，其它几种方法固核效果不明显。     

Effects of Long-Term Feed Deprivation on the Development of Rigor Mortis and Aspects of Muscle Quality in Live-Stored Mature Atlantic Cod (Gadus Morhua L.)

Fresh Atlantic cod is available in large amounts in Norway during the first 5 months of the year. Live-storage of cod may extend the marketing period of fresh cod products throughout the year. In addition, this concept makes pre-rigor processing possible. The main problem of keeping wild cod in captivity is that it does not easily accept formulated dry feed. The purpose of this study was, therefore, to investigate how long-term live-storage of mature Atlantic cod in the absence of feed (79 days) affects the onset and development of rigor mortis, as well as fillet quality by assessing hardness and water-holding capacity of the muscle, pH, protein, and water content. The results showed that starvation of Atlantic cod for 23 days reduces the pre-rigor time from 29 to 17 h. Further starvation did not decrease this period significantly, suggesting that live-stored cod deprived of feed for 79 days may still be industrially processed before the onset of rigor mortis. More than 51 days of starvation reduced protein concentration and increased water content of the muscle. After 51 days, the muscle texture was softer than in fish starved for a shorter period.     

漠斑牙鲆仔鱼、稚鱼和幼鱼对低盐度的耐受力和淡水驯化技术的研究

研究了漠斑牙鲆仔鱼、稚鱼和幼鱼对低盐度的耐受力和漠斑牙鲆的淡水驯化技术。初孵仔鱼在盐度为5的水中最多存活5d,5d以后全部死亡。30日龄稚鱼在4h10min淡水组全部死亡,对淡水的耐受力较低,而盐度为5～25的各组72h的存活率都在95.00%以上。90日龄幼鱼经缓慢淡水驯化9d后存活率可达98%以上,对漠斑牙鲆幼鱼进行淡水驯化的最佳年龄为90日龄。淡水驯化影响幼鱼初期的摄食,以后则逐渐趋于正常;急性淡水驯化对幼鱼的伤害比缓慢淡水驯化大;漠斑牙鲆对低盐的耐受力随生长和发育逐渐增加,年龄是影响幼鱼对低盐度耐受力的主要因素。     

清水下塘的鲢苗生长试验

研究了清水下塘的鲢苗生长情况。结果表明，在15天的饲养期内，清水下塘的鲢苗相对生长率低于正常的鲢苗相对生长率。     

Vaccination of rainbow trout, Oncorhynchus mykiss (Walbaum), against cryptobiosis: efficacy of the vaccine in fresh and sea water

Adult rainbow trout, Oncorhynchus mykiss (Walbaum), maintained in either fresh or sea water were vaccinated with a live Cryptobia salmositica vaccine. All vaccinated fish were protected 4 weeks later against the cryptobiosis, while unvaccinated rainbow trout developed the disease (e.g. high parasitaemia and severe anaemia) after challenge with virulent C. salmositica . There was also no disease in vaccinated fish when they were transferred from fresh to sea water immediately after vaccination. Complement fixing antibodies (CFAbs) were detected in vaccinated fish and the CFAbs lysed parasites under in vitro conditions. The antibody titres increased rapidly at one week post-challenge in vaccinated fish in fresh water and vaccinated fish transferred from fresh water to sea water after vaccination. However, the production of CFAbs was delayed by one week in vaccinated fish in sea water and the antibody titre was significantly lower than that in fish maintained in fresh water.