热泵-热风组合干燥方式对干制海参品质的改善

为了提高干制海参的品质,该文在热风干燥的基础上,利用热泵-热风组合干燥的方式干燥腌渍海参,对不同干燥方式下海参的干燥特性(干燥特性曲线,收缩系数和产品品质)进行测定,对干燥结束后海参的复水品质(复水倍数,流变学参数,感官评价)与传统的热风干燥进行分析比较,结果表明:组合干燥海参的平均收缩系数最小,为16.64,而平均复水倍数为10.18,远高于热风干燥产品;产品流变学特性及硬度,弹性,柔韧度,黏性均较热风处理后海参理想。结果表明:组合干燥可以明显提高干燥后海参的复水倍数和复水品质,产品的感官品质好。

硝基酚类化合物在海水中的光化学氧化研究

The photochemical degradation of p nitrophenol and 2,4 dinitrophenol in both natural seawater and artificial seawater was studied under the irradiation of mixed light sources(ultraviolet lamp/high pressure mercury lamp). The photolysis of the two nitrophenols was influenced by various factors including medium, heavy metal ions and photosensitizer. The photolysis of the two nitrophenols in natural seawater was faster than in artificial seawater, presumably due to the effect of inherent photosensitizers in natural seawater. The addition of Cu 2+ , Pb 2+ or Cd 2+ into the seawater solutions obviously increased the photolysis rate of the nitrophenols. Interestingly, we found that the presence of anthroquinone could accelerate the photolysis of p nitrophenol in natural seawater but had almost no impact on the photolysis of 2,4 dinitrophenol. The half lives of the photoreactions in natural seawater under our conditions were 40-54 min for p nitrophenol and 37-69 min for 2,4 dinitrophenol, respectively. Our study suggests that photochemical degradation is an important removal pathway for the nitrophenols in seawater.

有广泛用途和应用前景的大麻纤维

大麻是一种有重大经济意义的作物,在工业、建筑业、食品加工和医药上都有重要的作用。文章主要介绍了大麻纤维及其纺织品的优良性能,对大麻的深度探索、进一步综合利用有一定的现实意义。

我国禽产品出口面临的国际竞争环境及对策

我国禽肉进出口贸易情况，2013年全国进出口禽肉及其制品108万吨，同比增加11.6％。其中出口方面，共检验检疫出口禽肉及其制品47.7万吨、17.4亿美元，同比下降1.4％和5.4％。出口熟制禽肉25.2万吨，出口生禽肉22.5万吨。进口方面，共检验检疫进口禽肉及制品60.3万吨，同比增加24.7％。

食品供应商选择评估方式的研究

基于企业现通行的质量和安全管理模式,对每种类型食品原物料进行数据分析,加权量化了不同管理体系的影响程度,建立了简单易行的食品供应商评估选择方式。它根据不同产品的特性和需求,进行侧重点不同的评估和选择,并且可以有效利用第三方评估结果,减少重复劳动,充分共享资源。