Food science experiments for nutritionist - Determination of reduced vitamin C by the 9th indophenol titration method
become colorless and transparent in the end of the blue indophenol becomes pale pink and mixing the indophenol solution and (reduced vitamin C) ascorbic acid solution principle of the experiment. Oxidation-reduction coconut deshelling machine reaction is occurred in the mixture at this time, leuco indophenols and dehydroascorbic acid occurs. Since the reaction proceeds quantitatively, if seeking indophenol solution 1ml is whether the reaction of what mg ascorbic acid in advance, it is possible to calculate the amount of ascorbic acid from the amount of indophenol that used for the titration. (The numbers coconut deshelling machine are written on. Print has been calculated in advance is it this)
When heated for 15 minutes boiling bath 3) radish, you are lost cooked (loss) clear that vitamin C were less clearly compared with just grated by) boil (. It where to that or went to an amount corresponding to the lost remains as a question, but we know that was in the cooking water most of the minutes that were lost in the preliminary experiment. It is considered that there is a possibility that it can be taken the minutes towards the recipe that can be eaten with even juice boiled rather than simmered Given the fact that intake of vitamin C, such as miso soup and soup is lost.
shokujikken228
Hatena Blog / Hatena :: Diary
become colorless and transparent in the end of the blue indophenol becomes pale pink and mixing the indophenol solution and (reduced vitamin C) ascorbic acid solution principle of the experiment. Oxidation-reduction coconut deshelling machine reaction is occurred in the mixture at this time, leuco indophenols and dehydroascorbic acid occurs. Since the reaction proceeds quantitatively, if seeking indophenol solution 1ml is whether the reaction of what mg ascorbic acid in advance, it is possible to calculate the amount of ascorbic acid from the amount of indophenol that used for the titration. (The numbers coconut deshelling machine are written on. Print has been calculated in advance is it this)
When heated for 15 minutes boiling bath 3) radish, you are lost cooked (loss) clear that vitamin C were less clearly compared with just grated by) boil (. It where to that or went to an amount corresponding to the lost remains as a question, but we know that was in the cooking water most of the minutes that were lost in the preliminary experiment. It is considered that there is a possibility that it can be taken the minutes towards the recipe that can be eaten with even juice boiled rather than simmered Given the fact that intake of vitamin C, such as miso soup and soup is lost.
shokujikken228
Hatena Blog / Hatena :: Diary
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