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pH level of Foods
Acid prevents the growth of spores of deadly botulism bacteria. Typical pH level for commercially packed preserved fruits are: Fruit Jam 3.5 to 4.5 | Fruit Jelly 3 to 3.5 | Indian Pickles: 3.5
The pH level depends on the food, variety of food, and the growing conditions such as the soil pH level. I have generated following table pertinent to making Chutney Murabba and Pickles. Most (not all) of the detailed data is available at US-FDA-Center for Food Safety & Applied Nutrition
Item |
Approximate pH |
| Pure Water | 7.0 |
| Apple | 3.30 - 4.00 |
| Apricots | 3.30 - 4.80 |
| Artichokes | 5.50 - 6.00 |
| Baby corn | 5.20 - |
| Bananas | 4.50 - 5.20 |
| Bass, sea, broiled | 6.58 - 6.78 |
| Bass, striped, broiled | 6.50 - 6.70 |
| Beans Chickpeas (Cholay) | 6.48 - 6.8 |
| Beans Kidney (Rajmah) | 5.40 - 6.00 |
| Beans String | 5.6 |
| Blackberries, Washington | 3.85 - 4.50 |
| Blueberries, Maine | 3.12 - 3.33 |
| Broccoli, cooked | 6.30 - 6.52 |
| Brussels sprout | 6.00 - 6.30 |
| Buttermilk | 4.41 - 4.83 |
| Cabbage | 5.20 - 6.80 |
| Cantaloupe | 6.13 - 6.58 |
| Carrots | 5.88 - 6.40 |
| Cauliflower | 5.60 |
| Cherries, California | 4.01 - 4.54 |
| Coconut, fresh | 5.50 - 7.80 |
| Coconut milk | 6.10 - 7.00 |
| Cranberry Juice, canned | 2.30 - 2.52 |
| Cucumbers | 5.12 - 5.78 |
| Dates, Dromedary | 4.14 - 4.88 |
| Garlic | 5.80 |
| Ginger | 5.60 - 5.90 |
| Gooseberries (Amla?) | 2.80 - 3.10 |
| Grapes, Concord | 2.80 - 3.00 |
| Grapes, Seedless | 2.90 - 3.82 |
| Grapefruit | 3.00 - 3.75 |
| Guava, canned | 3.37 - 4. 10 |
| Honey | 3.70 - 4.20 |
| Horseradish, freshly ground | 5.35 |
|
Raspberry
|
6.27 |
| Kumquat, Florida | 3.64 - 4.25 |
| Leeks | 5.50 - 6.17 |
| Lemon Juice | 2.00 - 2.60 |
| Lime Juice | 2.00 - 2.35 |
| Lime | 2.00 - 2.80 |
| Loganberries | 2.70 - 3.50 |
| Loquat (May be acidified to pH 3.8) | 5.10 |
| Lotus Root | 6.90 - |
| Lychee | 4.70 - 5.01 |
| Mangoes, ripe | 3.40 - 4.80 |
| Mangoes, green | 5.80 - 6.00 |
| Mayhaw (a variety of strawberry) | 3.27 - 3.86 |
| Melon, Casaba | 5.78 - 6.00 |
| Melons, Honey dew | 6.00 - 6.67 |
| Melons, Persian | 5.90 - 6.38 |
| Molasses | 4.90 - 5.40 |
| Muscadine (A variety of grape) | 3.20 - 3.40 |
| Mushrooms | 6.00 - 6.70 |
| Mustard | 3.55 - 6.00 |
| Nectarines | 3.92 - 4.18 |
| Okra, cooked | 5.50 - 6.60 |
| Onions, red | 5.30 - 5.80 |
| Onion white | 5.37 - 5.85 |
| Onions, yellow | 5.32 - 5.60 |
| Oranges, Florida | 3.69 - 4.34 |
| Papaya | 5.20 - 6.00 |
| Parsley | 5.70 - 6.00 |
| Parsnip | 5.30 - 5.70 |
| Peaches | 3.30 - 4.05 |
| Peppers | 4.65 - 5.45 |
| Peppers, green | 5.20 - 5.93 |
| Persimmons | 4.42 - 4.70 |
| Pineapple | 3.20 - 4.00 |
| Plums, Blue | 2.80 - 3.40 |
| Plums, Damson | 2.90 - 3.10 |
| Plums, Green Gage | 3.60 - 4.30 |
| Plums, Green Gage, canned | 3.22 - 3.32 |
| Plums, Red | 3.60 - 4.30 |
| Pomegranate | 2.93 - 3.20 |
|
Prunes, dried, stewed
|
3.63 - 3.92 |
|
Sweet
|
5.30 - 5.60 |
| Pumpkin | 4.90 - 5.50 |
| Raisins, seedless | 3.80 - 4.10 |
| Raspberries | 3.22 - 3.95 |
| Scallion | 6.20 - |
| Shrimp | 6.50 - 7.00 |
| Spinach | 5.50 - 6.80 |
| Squash, Hubbard, cooked | 6.00 - 6.20 |
| Strawberries | 3.00 - 3.90 |
| Tamarind | 3.00 - |
| Tangerine | 3.32 - 4.48 |
| Tomatillo (resembling Cherry tomatoes) | 3.83 |
| Tomatoes | 4.30 - 4.90 |
| Turnips | 5.29 - 5.90 |
| Vinegar | 2.40 - 3.40 |
| Vinegar, cider | 3.10 |
| Walnuts, English | 5.42 |
| Watermelon | 5.18 - 5.60 |