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You are having camping night with your friends where you are in charge of grilling meats for dinner. While grilling the meats, you observed the changes in colour of the meat from pinkish to brown. Upon browning, the grilled meat gives you a pleasant aroma. Choose the CORRECT statements about the chemical reaction happens on the meat during the grilling process and the browning product formed. I. Maillard reaction or non-enzymatic browning involves the reaction between reducing sugars and amino acids/proteins by the impact of heat II. Reducing sugars in the open chain form act as mild reducing agents or electron donors in the presence of th reactive carbonyl group (C=O) III. Reaction between reducing sugar with amino acid creating glycosamine, which undergoes Amadori rearrangement to produce Amadori reaction products. IV. A continuous reaction will produce a furan derivate, which polymerize into a dark-coloured insoluble compound containing nitrogen. a. I only b. I, II and III c. I and II d. All of the above

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d. All of the above

烧烤过程中的化学反应

  • 美拉德反应:在烧烤过程中,肉中的氨基酸和还原糖在高温下发生反应,产生香气和褐色色素。145
  • 还原糖的作用:还原糖在美拉德反应中作为电子供体,与氨基酸发生反应,形成糖胺。2
  • 阿马多里重排:糖胺进一步重排生成阿马多里化合物,这是美拉德反应的关键步骤。4
  • 聚合物形成:随着反应的进行,生成的化合物会进一步聚合,形成深色的不溶性含氮化合物。4
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