How you would test the mixture to show that starch had been?

2007-11-07 7:32 am
How you would test the mixture to show that starch had been digested

回答 (2)

2007-11-09 2:08 am
✔ 最佳答案
Starch digest完一定有reducing sugar,只要用Benedict's Test一試便可 :
先將果隻mixture同benedict's solution(含Copper II sulphate)倒埋一齊並加熱,大紉3~4分鐘後,如果支野變左Brick-red(磚紅色)就代表有reducing sugar既出現(即係有starch被digest),另外,大家可以憑支野既深色程度知道大概多/少reducing sugar出現‧
做完以上步驟後,為確保所有starch已經被digest晒,加iodine solution去進一步confrim有無starch剩‧有變色(啡轉深藍)的話代表未digest晒,完全無變色就digest晒‧

以上步驟雖然好煩,但係一定100%知道有無starch被digest同係唔係完全digest晒‧
2007-11-07 7:37 am
Iodine solution
參考: ?


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