chromatogrpahy to determine the amount of citric acid in various orange juices, orange flavored drinks, and a navel orange. The navel orange had the highest citric acid concentration, followed by the 100% orange juices, the orange flavored juices, and then the 100% mixed fruit juice. Although the total citric acid concentration was determined,
Citric acid is a polyprotic acid (can release three H + s) that is a bit on the weak side (i.e., tends not to ionize completely). In solution in fruit juices, it lets a small portion of the H + go, however this small amount of acid is enough to create a pH = ~3 solution and a sharp taste on the palate.
I don't really like drinking water but I do to keep hydrated. I like juice, but I think the citric acid in juice is causing alot of my gastro issues. Friday night I drank some grapefruit juice, against my better judgment, and I was sick all weekend. I am pretty confident the citric acid in the grapefruit juice was the culprit.
1. Determine the degree of maturity of fruits and vegetables: •The titratable acidity of fruits is used, along with sugar content, as an indicator of maturity, generally the higher the maturity, the lower the acid content. e.g. in the ripening process. •Such as tomatoes from green to mature stage, there is an increase in sugar content.
known stoichiometry of the reaction allows us to calculate the citric acid concentration in the juice sample. Using a Buret 1. Rinse the buret barrel, stopcock and tip several times with 5-10 mL of distilled water. Close the stopcock. 2. Rinse the buret with several 3-5 mL portions of titrant. Tilt and roll the
Juices That Contain Citric Acid. Citric acid, or citrate, is an organic acid that exists in all fruits, especially in citrus fruits used to make fruit juices. Fruit juice varies in citric acid content, depending upon the type of fruit and the use of citric acid additives. The U.S. Food and Drug Administration considers citric acid...
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