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ghw521
½ð³æ (ÖøÃûдÊÖ)
- ·ÒëEPI: 2
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 116.9
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¡ï ¡ï
sirljz(½ð±Ò+2):лл½»Á÷ 2010-04-18 20:34
sirljz(½ð±Ò+2):лл½»Á÷ 2010-04-18 20:34
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²»ºÃÒâ˼£¬ÏÈ·ÒëÒ»¶Î Thereinto, pH have an large effect on color of rotten-skin chromatic aberration. Other relevant researches: With the increase of soluble solids, the colour of rotten-skin gradually deepen to brown, which result from the Maillard Reaction of reducing sugar and amino acids. And the carbohydrates of soybean milk dissolve into reducing sugar under high temperature for a long time, the Maillard Reaction of reducing sugar and amino acids occur again,which resulting in browning of beancurd clothing. When pH> 8, the colour of the rotten-skin obviously becoming more brown and more dark. |

2Â¥2010-04-18 17:32:21
ghw521
½ð³æ (ÖøÃûдÊÖ)
- ·ÒëEPI: 2
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 116.9
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¡ï ¡ï ¡ï
sirljz(½ð±Ò+3):лл½»Á÷ 2010-04-18 20:33
sirljz(½ð±Ò+3):лл½»Á÷ 2010-04-18 20:33
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ˮƽÓÐÏÞ£¬Ï£Íû¶ÔLZ ÓÐÓà Thereinto, pH have an large effect on color of rotten-skin chromatic aberration. Other relevant researches: With the increase of soluble solids, the colour of rotten-skin gradually deepen to brown, which result from the Maillard Reaction of reducing sugar and amino acids. And the carbohydrates of soybean milk dissolve into reducing sugar under high temperature for a long time, the Maillard Reaction of reducing sugar and amino acids occur again,which resulting in browning of beancurd clothing. When pH> 8, the colour of the rotten-skin obviously becoming more brown and more dark. The study of Jiang Yuanrong & Ou JingQiang show that when the value of the fat or protein of the soybean milk approach 0.3, the hydrophobic interaction of the non-polar chain of the fat and the non-polar region of protein generate complex substance,homogenization increases interphase boundaries and enhance the role of them, increasing the network density and homogeneity in order to improve the ductility of membrane, thus, the whole quality is improved. Studies indicate that the pH value of soybean milk have a great impact on the mechanical and barrier properties of membrane. This was probably due to the following: 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 . |

3Â¥2010-04-18 19:27:44
lastzealot
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- ·ÒëEPI: 10
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- ×¢²á: 2009-03-24
- ÐÔ±ð: GG
- רҵ: ¸ß·Ö×Ó²ÄÁϽṹÓëÐÔÄÜ
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Thereinto, pH has an significant influence on the color of rotten-skin chromatic aberration. Other studies rusults: the color of rotten-skin darkens to brown with the increase of soluble solids, and this is attributed to the Maillard Reaction of reducing sugar and amino acid in soy milk. Moreover, glycosides decompose into reducing sugar under continuous heating, and the resulting reducing sugar react with amino acid by Maillard Reaction, which makes the tofu brown stain. When pH is above 8, the tofu color obviously darkens. It is found by Jiang Yuanrong and Ou Jinqiang that the ratio of fat/protein is close to 0.3. The nonpolar chains of fat interact with those of protein and form complexes. The homogenization increases the interface, which increases their interaction, enhances the density and homogeneity, promotes the prolongation properties and thereby improves the quality. It is also studied that pH of soy milk in of great effect on the mechanical and blocking properties. This is probably due to the following reason: as pH increases the protein in soy milk deviates from its isoelectric point. S-S bond and hydrophobic groups expose largely and the gel intensity gradually increase. When pH is boave 8, the destroy of S-included protein is accelerated and S-S bonds decrease which results in the reduction of binding force. |
4Â¥2010-04-18 21:33:13
fandewei
ľ³æ (СÓÐÃûÆø)
- ·ÒëEPI: 15
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- ½ð±Ò: 469.8
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- ×¢²á: 2009-09-26
- ÐÔ±ð: GG
- רҵ: ·Ûĩұ½ðÓë·ÛÌ幤³Ì
yuanying3318(½ð±Ò+80, ·ÒëEPI+1):ÐÁ¿àÀ²£¡Ð»Ð» 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 . |

5Â¥2010-04-18 21:37:43














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