浅论我国金枪鱼市场营销策略

金枪鱼(Tuna)也称鲔鱼、吞拿鱼.它是一种生活在海洋中上层水域的鱼类,广阔分布在以太平洋、大西洋和印度洋等为中心的世界七大海域,属大洋性高度泂游鱼类.金枪鱼指鱼类中鲭科、箭鱼科和旗鱼科,共计约30余种.经济价值较高的有六个种类包括蓝鳍金枪鱼、大目金枪鱼、黄鳍金枪鱼、剑/旗鱼、长鳍金枪鱼和鲣鱼.前四种主要制作生鱼片,后两种主要用来制作金枪鱼罐头.     

东京筑地市场考察水产拍卖

筑地市场始建于1935年,创建之初为方便采用拍卖的方式进行鱼类交易。1954年,受”原爆鲔鱼“事件的影响,拍卖曾一度中断。恢复拍卖之后．筑地市场最受青睐的要属金枪鱼拍卖．品种包括大眼睛金枪鱼、印度金枪鱼、黑金枪鱼、南方金枪鱼等。目前,这里已成为全世界规模最大的金枪鱼拍卖市场,但受制于东京都政府的有关规定．外国竞买人是不允许进场参与金枪鱼拍卖的。     

金枪鱼消费受到市民青睐

为保证上海部分宾馆餐饮业有高品喷的金枪鱼生鱼片供应，上海水产集体海洋渔业公司在72小时之内将南太平洋的冰鲜金枪鱼空运到。上海水产集团海洋渔业公司在南太平洋斐济海域船队有四艘冷海水保鲜金枪鱼延绳钓船，常年在那纯净无污染的海域钓捕金枪鱼。捕捞的品种主要是大眼金枪鱼、黄跗和长跗金枪鱼，产品除了运回国内以丰富国内水产品供应外，主要出口至日本、美国和澳大利亚等太平洋国家。由于此金枪鱼捕自纯净的南太平洋深处，因而产品品质非常高，在国际市场上非常畅销。     

浅论我国金枪鱼市场营销策略

金枪鱼(Tuna)也称鲔鱼、吞拿鱼。它是一种生活在海洋中上层水域的鱼类,广阔分布在以太平洋、大西洋和印度洋等为中心的世界七大海域,属大洋性高度洄游鱼类。金枪鱼指鱼类中鲭科、箭鱼科和旗鱼科,共计约30余种。经济价值较高     

超高效液相色谱快速测定饮料中的食品添加剂

本文应用超高效液相色谱方法对饮料中常用的食品添加剂进行测试。应用甲醇-水提取试验样品中的食品添加剂,在色谱柱上进行分离,之后应用二极管阵列检测器进行检测。检验结果证明:饮料中含有的食品添加剂在5.5 min之内能够得到有效分离,回收率在91.6%~100.3%,RSD为0.66%~2.20%,精密度良好。     

金枪鱼鱼酥和深海旗鱼鱼酥加工工艺特点及储藏稳定性研究

描述金枪鱼鱼酥和深海旗鱼鱼酥的加工工艺特点。为考察鱼酥类产品的储藏稳定性,研究了金枪鱼鱼酥和深海旗鱼鱼酥在常温储存14个月期间的感官品质、微生物指标、水分含量、水分活度、酸价、过氧化值和DHA含量变化。结果显示,随着储存时间的延长,产品的感官品质、微生物指标、水分含量和水分活度无显著变化,DHA含量呈下降趋势,但是下降程度比较轻微,经过14个月的常温储存,其含量还保持在350 mg/100 g以上,酸价和过氧化值呈现上升趋势,但均低于国标规定限值,表明金枪鱼鱼酥和深海旗鱼鱼酥在常温储存14个月内品质稳定。     

金枪鱼等大型鱼类重金属汞含量的调查及应对措施

本文收集汇总了世界主要贸易国家对金枪鱼等大型鱼类重金属汞的限量要求以及相关的实验数据,调查了有关出口金枪鱼加工企业的原料和成品重金属汞的检测情况,认为金枪鱼等大型鱼类重金属汞含量偏高客观存在,特别是某些鱼种的大规格,汞含量超过国外官方标准的可能性很大,据此提出了有关出口企业的应对措施。     

酶联免疫法与液相色谱-串联质谱法测定水产中氯霉素残留

运用酶联免疫法和液相色谱-串联质谱法测定水产中的氯霉素残留。结果显示,ELISA法最低检测限为0.0125μg/kg,鱼、虾、贝类样本的添加回收率为80.4%-101.3%,变异系数为5.7%-11.5%;LC-MS/MS法最低检测限为0.1μg/kg,样本添加回收率为82.7%-98.2%,变异系数为6.2%-9.7%。用酶联免疫法对实际样品进行检测,筛选出5个阳性样本,经液相色谱-串联质谱法确证亦为阳性,且测定结果一致。研究表明,酶联免疫法快速、灵敏、可靠,为水产品中氯霉素的残留检测提供了快速筛选方法,而液相色谱-串联质谱法准确度高,适用于阳性样本的确证和精确定量。     

简论PPM标准

<正> PPM(Processing ＆ Product Method)标准是指产品的加工过程和加工方法须符合特定环境标准的简称。随着环境与贸易联系日益密切,为保护环境而采取的措施往往会影响贸易,PPM标准便是其中之一。例如,美墨“金枪鱼案”便是因PPM标准(金枪鱼的捕捞方法)而引发的贸易争端。在乌拉圭回合谈判中,PPM标准引起了广泛关注,最终作为一种新的贸易壁垒规定在《技术贸易壁垒协议》(TBT协     

从新近WTO/TBT争端论技术性贸易措施的应对

2012年4月24日,WTO争端解决机构(DSB)通过了印度尼西亚诉美国影响丁香烟生产和销售措施案(以下简称"美国丁香烟案")上诉机构报告及经修订的专家组报告。同年6月和7月,DSB又分别通过加拿大、墨西哥诉美国原产国标签案(以下简称"美国原产国标签案")和墨西哥诉美国影响金枪鱼和金枪鱼产品进口、上市和销售措施案(以下     

气相色谱-质谱法测定脂肪酸组成鉴别地沟油的方法研究

建立了分析油脂样品中37种脂肪酸含量的气相色谱-质谱检测方法,通过对100多种植物油和20多种地沟油的37种脂肪酸含量的分析,总结出了根据37种脂肪酸含量鉴别地沟油的判定依据。低碳数饱和脂肪酸是地沟油与植物油差异较大的组分,但是应用气相色谱方法测定时无法对其进行准确的定性定量,从而无法根据低碳数饱和脂肪酸的组成进行是否地沟油判定。应用气相色谱-质谱方法,提高了方法的灵敏度,完善了根据脂肪酸组成判定地沟油的依据。应用该判定依据,对卫生部两次盲样进行判定,阳性准确率分别为100%和95%,阴性准确率分别为100%和90%,表明该判定依据是一种有效且准确率较高的鉴别地沟油的方法。     

反式脂肪酸的来源与危害

随着时代的进步和经济的发展,我国人民的生活水平和生活质量越来越高,人们也越来越注重饮食健康。其中反式脂肪酸食用过量,会对人体造成较大的危害,如容易发胖,影响生育,引发冠心病等。而在人们生活中,很多食品都含有反式脂肪酸,如蛋糕、面包、沙拉酱、乳制品、牛羊肉和植物油等。基于此,主要分析反式脂肪酸的来源,并针对反式脂肪酸的危害进行研究和探讨,以期保障人们的饮食健康。     

气相色谱分析脂肪酸组成鉴别地沟油的方法研究

应用气相色谱内标法测定了50多种植物油、20多种地沟油和4种动物油中37种脂肪酸的含量,对其脂肪酸组成和差异进行了分析,建立了不同种类植物油脂的特征指纹谱库。应用该指纹谱库可以对各品种植物油进行种类归属判定;同时分析了地沟油与植物油的差异性脂肪酸组成,发现特定的脂肪酸如月桂酸（C12：0）、肉豆蔻酸（C14：0）和十七烷酸（C17：0）等的含量组成,地沟油与正常油脂具有明显的差异,可以作为地沟油的判别依据;利用该判别依据,参加了两次卫生部组织的地沟油盲样考核,阳性准确率均在90%以上。表明利用脂肪酸组成分析方法,是一种有效且可靠性较高的鉴别地沟油的方法。     

Trading Off Fish Health and Safety: Female Decision‐Making Processes toward the Risk of Methylmercury in Fish

This study takes a qualitative, point‐in‐time look at 26 females’ decision‐making processes toward trading off the risks of mercury and the health benefits of a seafood diet. The data revealed five different decision‐making processes, with 17 of the 26 participants indicating their fish consumption patterns did not change. Of the nine who changed their fish consumption in some way, six specifically reduced the amount of tuna they ate. Similarly, participants who were most at risk—women of childbearing age and those with young children—expressed fish consumption changes more frequently than others, especially in the amount of tuna they consumed.     

Retention of banana flavour in dehydrated milk

This research investigates the loss of flavour during the spray drying of banana-flavoured milk. The effect of encapsulation using gum arabic on the flavour loss compounds was investigated. The changes were investigated using gas chromatography headspace analysis, sensory panels and scanning electron microscopy. Spray drying without encapsulation showed a banana flavour loss of 74% as opposed to 34% with encapsulation.     

氨基酸在大脑中的代谢作用研究

氨基酸作为神经递质和神经调质,是中枢神经系统刺激神经组织中肽类、蛋白质和其他生物活性成分的基础物质。对可作为神经递质和神经调质的氨基酸种类进行了介绍,并综述了其在大脑中的特异性代谢,指出氨基酸在大脑中的代谢是中枢神经系统代谢机制的重要部分。     

芝麻在储藏过程中的生物化学变化

在储藏过程中,芝麻所含3大营养物质皆发生了相应的生物化学变化。其中,糖类物质在有氧呼吸和无氧呼吸作用下被氧化分解生成二氧化碳、水及乙醇等;脂类物质经酶促反应和非酶促反应作用生成过氧化物、甘油和游离脂肪酸等;蛋白质类物质在不同的酸度条件下分解生成氨基酸或进一步分解生成氨、硫化氢和胺类物质等。     

The Effect of Information on Willingness to Pay for Canned Tuna Fish with Different Corporate Social Responsibility (CSR) Certification: A Pilot Study

The objective of this study was to assess the role of information in consumers' willingness to pay (WTP) for food products with corporate social responsibility (CSR) certification. The item used for the experimental design was canned tuna fish, a product on the market that is already exhibiting various kinds of certification related to social and environmental attributes. Two different kinds of certifications were examined, namely Friend of the Sea, which involves environmental aspects, and SA8000, related to workers' rights and more general social attributes. We implemented experimental auctions, taking into account three information treatments. The initial findings show that the WTP for both CSR labels is higher than the WTP for tuna fish without any CSR certification. Nevertheless, the information provided on CSR certification did not change consumers' WTP among the certification schemes. Our findings could also serve to fine‐tune marketing strategies to consumer preferences and determine which CSR activities are worth undertaking.     

Bacterial survival on fabrics laundered in cold water

The effect of detergent formulation and fabric type on bacterial survival after home laundering in cold water was investigated. Three fabrics, 65/35 polyester/cotton shirting, 100% cotton sheeting, and 100% cotton terry cloth, were inoculated with Staphylococcus aureus, laundered in cold 60 ± 5°F (16 ± 3°C) water and machine dried. Eight phosphorus-based powders and non-phosphorus detergents in both powder and liquid form were used. A control with no detergent was used. Percent reduction in bacteria after machine washing and after machine drying were determined. Of the eight detergents studied, only two effectively removed 100% of the bacteria from the cotton terry cloth after washing. These were sodium carbonate and aluminosilicate-based powders, one of which contained sodium perborate, the other included enzymes. All of the detergents used removed > 97% of bacteria from the polyester/cotton shirting and cotton sheeting fabrics. No significant cross contamination occurred with any fabric. A greater percent reduction of bacteria was obtained with the terry cloth samples after washing and tumble drying than after washing alone. The implications of the study are important for consumers who are using colder water in the laundering process. This study found that bacteria were removed more easily from the two plain weave fabrics than the looped terry cloth fabric. The effectiveness of tumble drying after cold water laundering to reduce bacteria in the terry cloth towelling was an important finding.     

硝酸分解磷矿粉生产硝基节酸磷肥

在硫资源缺乏且需要硝态氮的作物区,可以适当的发展硝基节酸磷肥。硝态氮能直接被作物吸收,属于速效性肥料,可用作追肥或寒冷季节作物施肥。不含重金属离子的废酸与磷矿粉混合后,作为硝基磷肥,既解决了废酸处理问题,又同时副产肥料。采用不足量的硝酸来分解磷矿,生产硝基节酸磷肥,综合分析,较佳的反应条件为磷矿粉与折纯硝酸质量比为1.0～1.2,烘干固化温度120℃左右,烘干固化时间8h。该方法处理后,矿粉分解率74.41%,所得硝基磷肥总养分为25.09%,其中有效磷17.55%,硝态氮7.54%。