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Food Engineering/Manufacturing/potential hydrogen level
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Question
what are samples of food that has a pH of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 and 14. Can you give specific sample of food and how would you consider soft drinks? what is the pH of softdrinks?
To my knowledge, there are no foods at the extremes of pH - 1, 2, 13, 14. Foods are considered acid if their pH is below 4.6 because in this range, botulinum toxin does not grow. Fruit juices and most tomato products are examples. Vinegar and other food acids probably have pH around 3. Meats are slightly acidic, just below 7. Water is around 7. There are not many foods with pH much above 7 that I can think of. Soft drinks are acidic, but I do not know specific values. The composition varies, as does the kind and amount of added acid. Colas have added phosphoric acid while others use citric.
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| Rating(1-10) | Knowledgeability = 3 | Clarity of Response = 10 | Politeness = 10 |
| Comment | I have a problem looking for food with pH 8 and above and that is what I am asking. I hope that you could give me specific food for specific pH level. Sorry for my rating but it didnt satisfy my question. Thank you very much | ||
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Answers by Expert:
J. Peter Clark
Expertise
How various processed foods are made; ways to improve manufacturing; how to make a new food product.
Experience
Employment history: Research Engineer, U.S.Agricultural Research Service, Associate Professor Chemical Engineering, Virginia Tech, Director of Research, Continental Baking Company, President, Epstein Process Engineering, Inc., Vice Presdent Technology, Fluor Daniel, Inc., Consultant to the Process Industries
Organizations: American Institute of Chemical Engineers (Fellow) Institute of Food Technologists, American Association of Cereal Chemists, American Association of Candy Technologists, American Society of Agricultural Engineers,
Publications: Several Encyclopedias (Kirk and Othmer, Chemical Technology; Food Science, Food Technology and Nutrition; Wiley Encyclopedia of Food Science and Technology; Encyclopedia of Life Support Systems); five books, two book chapters; numerous journals.
Education: BSChE Notre Dame PhD University of California, Berkeley
Awards: AIChE Food, Pharmaceutical and Bioengineering Division Award 1998
Clients: Major food processing and pharamaceutical companies.
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