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How to measure Vitamin C levels in food
Description
In this experiment, we will learn how to determine the concentration of Vitamin C in various juices and fruits using a titration method based on an oxidation-reduction (redox) reaction. The method utilizes iodine and a starch indicator to identify the precise point at which all the ascorbic acid has reacted, allowing for a quantitative comparison between different types of food.
Original title
איך מודדים ויטמין C במזון?
בניסוי זה נלמד כיצד לקבוע את ריכוז הוויטמין C במיצים ופירות שונים באמצעות שיטת הטיטרציה המבוססת על תגובת חמצון-חיזור. השיטה עושה שימוש ביוד ובאינדיקטור עמילן כדי לזהות את הנקודה שבה כל החומצה האסקורבית הגיבה, מה שמאפשר השוואה כמותית בין סוגי מזון שונים.
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