宣威火腿白点的分析(英文)

宜威火腿是中国三大著名火腿之一,常常有白点在火腿中出现,影响产品外观。通过微生物学方法和显微镜观察,发现这些白点既不是微生物,也不是寄生虫。白点中的蛋白质降解程度很高,经梯度SDS-PAGE凝胶分析,发现白点含有两种主要蛋白质,其分子量为51000和13200。在白点中的酪氨酸含量是正常火腿肌肉的8倍。表明白点可能是蛋白质降解产物、酪氨酸结晶和一些其它成分。所有无机成分的含量经分析都少于火腿肌肉。在白点中还有硫酸软骨素出现,表明在猪的活体阶段在白点部位的蛋白质发生了某种病理性变化。在火腿腌制阶段火腿上接种酵母能有效的减少火腿白点的形成。

Analysis of White Particles in Xuanwei Ham

Xuanwei Ham is a famous ham in China with Some white particle spots often appeared in ham, mostly in ham muscle. However, examined by microbiological methods and observed by fight microscope, there are neither microbes nor parasites in the white particle spots. Proteins in particles would decompose significantly, and two main proteins with molecular weights of respectively 51000 and 13200 were detected by gradient SDS-PAGE in particles. The content of tyrosine in white particles was eight times higher than that in normal ham muscle, which indicated that the particles might be decomposed protein, tyrosine and some other component. All the contents of inorganic elements analyzed are less than those in ham muscle, and the schondroitin sulfate occurred in white particle implie that pathological disease might occur in muscle at the particle position during five stage of pig. Inoculating yeast on ham during salting can prevent the formation of particles effectively.