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yuanying3318金虫 (初入文坛)
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两段汉译英求助（截至日期：10年5月1日）
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其中，pH对腐皮色差影响较显著。其他一些相关的研究结果：随着可溶性固形物不断增加腐皮颜色逐渐加深至褐色，这是豆浆中的还原糖与氨基酸发生了美拉德反应所致。并且，长时间高温加热下豆浆的碳水化合物受热分解成还原糖，还原糖进一步与氨基酸发生美拉德反应，从而造成豆腐衣褐变。当pH值＞8时，腐皮颜色明显变暗变深。 姜元荣＆欧锦强等人研究表明当豆浆液中脂肪/蛋白接近0.3时，脂肪的非极性链与蛋白非极性区发生疏水相互作用，形成两者复合物，均质化作用使相界面增加，提高两者的作用，增加网络的致密程度和均匀性，从而提高膜的延伸性能，进而提高了整体的质量。有研究表明，豆浆溶液的pH对膜的机械性能和阻隔性能有非常大的影响。This was probably due to the following：随浆液pH值的增大豆浆中蛋白质越偏离等电点，二硫键、疏水集团充分暴露形成的凝胶强度逐渐增大；当pH值＞8时，含硫氨基酸被破坏加快，二硫键减少，结合的力减弱。 |
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yuanying3318(金币+80, 翻译EPI+1):辛苦啦！谢谢 2010-04-22 22:00
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ph has a large effect on the tofu skin colors.Other relevant researches show that tofu skin colors will gradually deepen to brown with the increase of solulabe soilds,caused by the Maillard reaction between Reducing sugars and amino acids in the Soya bean milk.besides,Milk carbohydrates will be dissociated into Reducing sugar under the condition of prolonged heating,then, reducing sugar will react with amino acids,which causes the Browning of bean sheets.when the ph value is beyond 8,the color of bean curd will obviously become shaded. The study of Jiang Yuanrong & Ou JingQiang shows that when the ratio of fat and protien approaches 0.3,Hydrophobic interaction will occur between Non-polar chain fatty and Protein non-polar area,then two complexes are formed.Homogenizing effect increases the Interface,when this process is promoted,the whole quality can be improved due to the promotion of Extension of membrane performance and Dense network of the extent and uniformity.some studies are reported that the ph of Milk solution greatly affects the Membrane mechanical properties and barrier properties. This was probably due to the following factors:With the increase of slurry pH, the protein of soybean milk deviate the isoelectric point, the strength of gelatin which result from the fully exposure of disulfide bonds and hydrophobic groups becomes more stronger gradually. When the pH value> 8, the destruction of amino acids containing sulfur accelerate ,with disulfide bond reduction and combining power decline . |
5楼2010-04-18 21:37:43