天气转凉 蟹足棒、鱼丸等有望快销

随着天气转凉，蟹足棒、鱼丸等火锅产品在北京市场近期销量有望渐长。     

冻梭子蟹切蟹加工工艺

梭子蟹具有较高的营养价值和经济价值，冷冻梭子蟹切蟹是近年来我国出口创汇的主要水产品之一。其加工流程为：原料一清洗一去壳盖等→切蟹与刷洗→整理→漂洗与沥水→称重排盘与冻结→脱盘与包装冷藏。具体工艺如下：１原料选择 ２００ ｇ以上、蟹爪齐全、无破损的梭子蟹为原料，剔除“软皮蟹”、“籽蟹”及其他杂蟹，用层冰保鲜，一层一蟹。要求保持品质新鲜，胸部甲壳色泽正常，手指压腹面较结实，无异味。２清洗逐个用流动清水清洗干净，不能浸洗，以免影响质量。同时，剔除遗留的质量差的梭子蟹。３去壳盖等剥去原料蟹的壳盖，清除其内…     

香酥鱼条的加工工艺

以梅鱼为原料,经过解冻、去头、内脏、泡药、切刀印、裹粉、速冻等工艺制作香酥梅鱼,并确定最佳工艺条件。     

人造虾仁成形机的研制

近年来,鱼糜制品 (鱼丸、鱼糕、鱼肉香肠、鱼卷、鱼饼等 )已成为家庭和宾馆饭店的餐桌上人们最喜爱的水产食品之一。鱼糜制品的生产也随着鱼糜制品消费市场的不断扩大,逐渐由家庭作坊式走向工厂化生产,加工不同的产品就需要不同的成形机械。本文介绍一种把低值鱼糜制成虾仁的人造虾仁成形机,该机设计生产能力为 30~40kg/h,产品虾仁单个重 16g,试生产后所制成品形状逼真。1 人造虾仁成形机原理及技术关键在人造虾仁成形机的技术研究中,重点分析了美国专利介绍的成形机的构成和优缺点,在此基础上提出了三种设计方案,经分析对比并经专家专…     

Development of a Prediction Computer Model for Blue Crab Meat Yield Based on Processing and Biological Variables

The effects of cooking time, cooking method, storage conditions, crab size, crab sex, season, and crab sexual maturity on the total and differential yield of blue crab were determined under commercial processing condition. Crabs cooked for 8 min. yielded more meat than those processed for 12 min. and 10 min. Male crabs yielded more lump and claw meat than female crabs. Clean female crabs also produced more lump and top flake than sponge crabs. A computer program, VTBCP, containing the yield data and prediction equations was developed to predict and calculate the final meat yield (total and differential) based on biological and processing variables.     

冷冻鱼糜加工工艺和设备

1加工冷冻鱼糜的原料通常用来加工冷冻鱼糜的水产资源为新鲜白色鱼肉的鱼类 ,如石首鱼类 (如黄鱼、白姑、黄姑、梅童等 )、海鳗、沙鱼、乌贼等 ,制成的鱼糜不仅色泽好 ,而且弹性好 ,而其他鱼类较差 ,如带鱼、马鲛。原料新鲜度越好加工后的中间素材质量越高 ,凝胶形成能力越强。相同的鱼类由于鲜度不同加工的鱼糜质量差距很大。以狭鳕为例 ,在海上制成的鱼糜一般是捕获后 1 8h以内加工 ,鱼糜的质量为特级品。而陆上加工的多为二级品。因此原料鱼捕获后必须马上加冰或用冷海水降温 ,根据经验 ,黄、东海地区用冰量 (重量比 )在夏季为冰∶鱼 =( …     

水产饲料加工的主要工艺与设备

1 粉碎工艺及设备 原料粉碎粒度影响饲料消化利用率，还直接影响混合均匀度、调质效果和成品的耐水性。     

浅谈生产水产饲料关键设备的选型

近年来国内饲料工业呈现日新月异快速发展的趋势 ,特别是水产饲料 ,其品质与价格、品牌与服务日益受到市场的关注。各饲料生产企业为能在激烈的市场竞争中立于不败之地 ,纷纷通过调整生产工艺、生产设备等手段来改进饲料的外观、提高饲料的内在品质 ,要想生产出优质的水产饲料 ,完善的水产饲料加工工艺和适用的水产饲料加工设备是关键 ,因为不同的工艺设计和加工设备 ,产生的效果往往截然不同。1　粉碎粒度与设备一般生产普通水产饲料 (如鲤鱼、草鱼和鲢鱼等 ) ,制粒前原料粉碎粒度的要求为 40～ 60目 ,但生产特种水产饲料 (如对虾、鳗鱼、…     

Collection,Analysis, and Utilization of Biogas from Anaerobic Treatment of Crab Processing Waters

Abstract

Two laboratory-scale, upflow anaerobic reactors were constructed to treat blue crab (Callinectes sapidus) cooking wastewater for determination of the volume and composition of the resulting bio-gas. Both systems (A and B) consisted of two 4-liter (L) upflow anaerobic reactors and one 8-L aerobic reactor in series. The first anaerobic reactor of System A contained 240,12.7 mm foam cubes, while the first anaerobic reactor of System B contained 180 foam pieces (25.4 ×25.4 ×12.7 mm). Biogas production rates for System A ranged from 6.6 L gas/L feed to 10.0 L gas/L feed. Mean values for System B ranged from 7.1 L gas/L feed to 11.9 L gas/L feed. Methane and carbon dioxide comprised 68% and 28%, respectively, of the gas from both systems. Hydrogen sulfide averaged 1.5% and 1.4% for systems A and B, respectively. A pilot-scale biogas collection and utilization system was also constructed and successfully demonstrated. Details of the pilot-scale system design are provided in the paper to help processors better understand how the technology might be applied.     

Use of Air Stripping Technology to Remove Ammonia from Biologically Treated Blue Crab Processing Wastewater

Abstract

Crab cooker wastewater contains high concentrations of chemical oxygen demand (COD), total suspended solids (TSS), and total Kjeldahl nitrogen (TKN). Anaerobic biological treatment of the wastewater releases high concentrations of ammonia. In this study, the potential for air stripping to remove ammonia from wastewater which was treated biologically under anaerobic conditions was evaluated. An air stripping tower's ammonia removal efficiency increased from 50 to 72 percent as the air flowrate was increased from 9 to 21 m³/min. The average liquid loading rate and liquid temperature were 25 L/m²/min and 14^GC, respectively. Ammonia stripping efficiency increased as the stripping factor was increased from one to three; however, under the conditions of this study (2,3 inch LanPac packing and countercurrent tower), stripping factors from two to three were only possible at low liquid loading rates (less than 41 m-Vm²/min) due to pressure drop considerations. At liquid loading rates less than 41 m-Vm²/min, the product of the overall mass transfer coefficient (KL) and the specific interfacial area (a) increased with increasing liquid loading rate, probably because more of the packing surface was wetted at higher liquid loading rates.     

水产人工配合饲料的加工设备

水产养殖中使用的人工配合饲料多种多样，广义上可分为海水饲料和淡水饲料。而按饲喂对象可分为鱼饲料、虾饲料等；按加工方法可分为制粒料、膨胀膨化料和粉料等。水产饲料厂的规划及其工艺设计和产品选型主要取决于当地的实际情况，如饲料源的供应情况，原料的品种和形态，对饲料产品的要求等。本文对水产饲料的主要加工设备作一简单的介绍。     

冷冻鱼糜加工生产线研究与配置

低值鱼是指直接经济价值较低的海淡水鱼，规模化低值鱼综合加工目前一般是以低值鱼为原料进行冷冻鱼糜生产。低值鱼冷冻鱼糜加工技术与设备的研究紧跟国际先进的加工工艺技术，并消化吸收了国外先进加工设备，进行了低值鱼冷冻鱼糜加工关键单机的研制，提出了较为理想的班产5t冷冻鱼糜生产线设备配置。