Hint | Food | ¸À°úÇâ | Diet | Health | ºÒ·®Áö½Ä | ÀÚ¿¬°úÇÐ | My Book | À¯Æ©ºê | Frims | ¿ø ·á | Á¦ Ç° | Update | Site |
Chemistry ¡í pH »êµµ(acidity)¿Í pH - ¹Ì»ý¹° : ¹Ì»ý¹° »ýÀ°Á¶°Ç - º¸Á¸·á, À½·á»ì±ÕÁ¶°Ç - Çظ®µµ : °»ê, ¾à»ê - »êµµ(acidity)¿Í pH - ³»»ê¼º : pH´Â ¿ëÇصµ¸¦ ¹Ù²Û´Ù The pH is a logarithmic measure of the concentration of free hydrogen ions in a chemical or biological system. It's a very important concept in cell biochemistry. Titratable acid, on the other hand, is a simple measure of the (related) amount of acid 'anions' in a juice. There is no direct relationship between titratable acidity and pH in apple juice, although generally the pH goes up as the acid goes down and vice-versa. The exact relationship differs from sample to sample and depends on esoteric concepts like 'buffering capacity' which will vary for a whole host of reasons. |
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