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PH is important when storing foods in sealed Sous Vide bags that are oxygen free. Most pathogens and eliminated in any food at 130F, except Clostridium botulinum. The Botulism toxin is inactivated at 180F, but the spores are not killed until 240F. The spores are inactive at a PH below 4.7 and in salt solutions above 5%. The spores thrive at 40F to 120F in an anaerobic environment. Deaths are now near zero reported out breaks are rare (see CDC 2012 Report), but shelf life of refrigerated vacuum packed foods should take PH into account. In general anything below 4.5 is OK for a few months refrigerated. and anything higher for 1-2 weeks. All of the canned foods you see in the grocery store are pasteurized at 240F for ten minutes because of this problem. Most cases come from home canned tomatoes that have a high PH.

When cooking Sous Vide and you plan to store in the refrigerator, or freeze it is important to get the bag out of the danger zone of 40-120F quickly by dipping in an ice bath, or running cold water over bag, before placing in refrigerator. If you plan to eat meal that step is not necessary. No one has ever gotten botulism from Sous Vide cooking, and many scientific studies have shown that to be unlikely, providing proper technique is always followed. Read more in the Food Safety tab in Diet Science section.
No.ItemApproximate pH
1Abalone6.10 - 6.50
2Abalone mushroom5.00
3Ackees5.00
4Aloe vera6.10
5Aloe Juice6.00 - 6.80
6Anchovies6.50
7Anchovies, stuffed w/capers, in olive oil5.58
8Antipesto5.60
9Apple, baked with sugar3.20 - 3.55
10Apple, eating3.30 - 4.00
11Apples Delicious3.90
12Apples Golden Delicious3.60
13Apples Jonathan3.33
14Apples McIntosh3.34
15Apples Juice3.35 - 4.00
16Apples Sauce3.10 - 3.60
17Apples Winesap3.47
18Apricots3.30 - 4.80
19Apricots Canned3.40 - 3.78
20Apricots Dried, stewed3.30 - 3.51
21Apricots Nectar3.78
22Apricots Pureed,3.42 - 3.83
23Apricots Strained3.72 - 3.95
24Arrowroot Crackers6.63 - 6.80
25Arrowroot Cruel6.37 - 6.87
26Artichokes5.50 - 6.00
27Artichokes, canned, acidified4.30 - 4.60
28Artichokes, French, cooked5.60 - 6.00
29Artichokes, Jerusalem, cooked5.93 - 6.00
30Asparagus6.00 - 6.70
31Asparagus Buds6.70
32Asparagus Stalks6.10
33Asparagus, cooked6.03 - 6.16
34Asparagus, canned5.00 - 6.00
35Asparagus, frozen, cooked6.35 - 6.48
36Asparagus, green, canned5.20 - 5.32
37Asparagus, strained4.80 - 5.09
38Avocados6.27 - 6.58
39Baby corn5.20
40Baby Food Soup, unstrained5.95 - 6.05
41Bamboo Shoots +5.10 - 6.20
42Bamboo Shoots, preserved3.50 - 4.60
43Bananas4.50 - 5.20
44Bananas, red4.58 - 4.75
45Banana, yellow5.00 - 5.29
46Barley, cooked5.19 - 5.32
47Basil pesto4.90
48Bass, sea, broiled6.58 - 6.78
49Bass, striped, broiled6.50 - 6.70
50Beans5.60 - 6.50
51Beans Black5.78 - 6.02
52Beans Boston style5.05 - 5.42
53Beans Kidney5.40 - 6.00
54Beans Lima6.50
55Beans Soy6.00 - 6.60
56Beans String5.60
57Beans Wax5.30 - 5.70
58Beans, pork & tomato sauce, canned5.10 - 5.80
59Beans, refried5.90
60Beans, vegetarian, tomato sauce, canned5.32
61Beets5.30 - 6.60
62Beets, cooked5.23 - 6.50
63Beets, canned, acidified4.30 - 4.60
64Beets, canned4.90 - 5.80
65Beets, chopped5.32 - 5.56
66Beets, strained5.32 - 5.56
67Bird's nest soup7.20 - 7.60
68Blackberries, Washington3.85 - 4.50
69Blueberries, Maine3.12 - 3.33
70Blueberries, frozen3.11 - 3.22
71Bluefish, Boston, filet, broiled6.09 - 6.50
72Bran Flakes5.45 - 5.67
73Bran All Bran5.59 - 6.19
74Bread, white5.00 - 6.20
75Bread, Boston, brown6.53
76Bread, Cracked wheat5.43 - 5.50
77Bread, pumpernickel5.40
78Bread, Rye5.20 - 5.90
79Bread, whole wheat5.47 - 5.85
80Breadfruit, cooked5.33
81Broccoli, cooked6.30 - 6.52
82Broccoli, frozen, cooked6.30 - 6.85
83Broccoli, canned5.20 - 6.00
84Brussels sprout6.00 - 6.30
85Buttermilk4.41 - 4.83
86Cabbage5.20 - 6.80
87Green5.50 - 6.75
88Red5.60 - 6.00
89Savoy6.30
90White6.20
91Cactus4.70
92Calamary (Squid)5.80
93Cantaloupe6.13 - 6.58
94Capers6.00
95Carp6.00
96Carrots5.88 - 6.40
97Carrots, canned5.18 - 5.22
98Carrots, chopped5.30 - 5.56
99Carrots, cooked5.58 - 6.03
100Carrots, pureed4.55 - 5.80
101Carrots, strained5.10 - 5.10
102Cauliflower5.60
103Cauliflower, cooked6.45 - 6.80
104Caviar, American5.70 - 6.00
105Celery5.70 - 6.00
106Celery, cooked5.37 - 5.92
107Celery Knob, cooked5.71 - 5.85
108Cereal, strained6.44 - 6.45
109Chayote (mirliton), cooked6.00 - 6.30
110Cheese, American, mild4.98
111Cheese, Camembert7.44
112Cheese, Cheddar5.90
113Cheese, Cottage4.75 - 5.02
114Cheese, Cream, Philadelphia4.10 - 4.79
115Cheese Dip5.80
116Cheese, Edem5.40
117Cheese, Old English6.15
118Cheese, Roquefort5.10 - 5.98
119Cheese, Parmesan5.20 - 5.30
120Cheese, Snippy5.18 - 5.2l
121Cheese, Stilton5.70
122Cheese, Swiss Gruyere5.68 - 6.62
123Cherries, California4.01 - 4.54
124Cherries, frozen3.32 - 3.37
125Cherries, black, canned3.82 - 3.93
126Cherries, Maraschino3.47 - 3.52
127Cherries, red, Water pack3.25 - 3.82
128Cherries, Royal Ann3.80 - 3.83
129Chicory5.90 - 6.05
130Chili Sauce, acidified2.77 - 3.70
131Chives5.20 - 6.31
132Clams6.00 - 7.10
133Clam Chowder, New England6.40
134Coconut, fresh5.50 - 7.80
135Coconut milk6.10 - 7.00
136Coconut preserves3.80 - 7.00
137Codfish, boiled5.30 - 6.10
138Cod liver6.20
139Conch7.52 - 8.40
140Congee6.40
141Corn5.90 - 7.30
142Corn, canned5.90 - 6.50
143Corn Flakes4.90 - 5.38
144Corn, frozen, cooked7.33 - 7.68
145Corn, Golden Bantam, cooked on cob6.22 - 7.04
146Crab meat6.50 - 7.00
147Crabapple Jelly, corn2.93 - 3.02
148Cranberry Juice, canned2.30 - 2.52
149Crabmeat, cooked6.62 - 6.98
150Cream, 20 per cent6.50 - 6.68
151Cream, 40 per cent6.44 - 6.80
152Cream of Asparagus6.10
153Cream of Coconut, canned5.51 - 5.87
154Cream of Potato soup6.00
155Cream of Wheat, cooked6.06 - 6.16
156Chrysanthemum drink6.50
157Cucumbers5.12 - 5.78
158Cucumbers, Dill pickles3.20 - 3.70
159Cucumbers, pickled4.20 - 4.60
160Curry sauce6.00
161Curry Paste,acidified4.60 - 4.80
162Cuttlefish6.30
163Dates, canned6.20 - 6.40
164Dates, Dromedary4.14 - 4.88
165Eggplant5.50 - 6.50
166Eggs, new-laid, whole6.58
167Egg White7.96
168Egg Yolk6.10
169Eell6.20
170Escarolle5.70 - 6.00
171Enchalada sauce4.40 - 4.70
172Fennel (Anise)5.48 - 5.88
173Fennel, cooked5.80 - 6.02
174Figs, Calamyrna5.05 - 5.98
175Figs, canned4.92 - 5.00
176Flounder, boiled6.10 - 6.90
177Flounder, fi1et, broiled6.39 - 6.89
178Four bean salad5.60
179Fruit cocktail3.60 - 4.00
180Garlic5.80
181Gelatin Dessert2.60
182Gelatin, plain jell6.08
183Ginger5.60 - 5.90
184Ginseng , Korean drink6.00 - 6.50
185Gooseberries2.80 - 3.10
186Graham Crackers7.10 - 7.92
187Grapes, canned3.50 - 4.50
188Grapes, Concord2.80 - 3.00
189Grapes, Lady Finger3.51 - 3.58
190Grapes, Malaga3.71 - 3.78
191Grapes, Niagara2.80 - 3.27
192Grapes, Ribier3.70 - 3.80
193Grapes, Seedless2.90 - 3.82
194Grapes, Tokyo3.50 - 3.84
195Grapefruit3.00 - 3.75
196Grapefruit, canned3.08 - 3.32
197Grapefruit Juice, canned2.90 - 3.25
198Grass jelly5.80 - 7.20
199Greens, Mixed, chopped5.05 - 5.22
200Greens, Mixed, strained5.22 - 5.30
201Grenadine Syrup2.31
202Guava nectar5.50
203Guava, canned3.37 - 4. 10
204Guava Jelly3.73
205Haddock, Filet, broiled6.17 - 6.82
206Hearts of Palm5.70
207Herring6.10
208Hominy, cooked6.00 - 7.50
209Honey3.70 - 4.20
210Honey Aloe4.70
211Horseradish, freshly ground5.35
212Huckleberries, cooked with sugar3.38 - 3.43
213Jackfruit4.80 - 6.80
214Jam, fruit3.50 - 4.50
215Jellies, fruit3.00 - 3.50
216Jujube5.20
217Junket type Dessert: Raspberry6.27
218Junket type Dessert:Vanilla6.49
219Kale, cooked6.36 - 6.80
220Ketchup3.89 - 3.92
221Herring,Kippered Marshall5.75 - 6.20
222Herring, Pickled4.50 - 5.00
223Kelp6.30
224Kumquat, Florida3.64 - 4.25
225Leeks5.50 - 6.17
226Leeks, cooked5.49 - 6.10
227Lemon Juice2.00 - 2.60
228Lentils, cooked6.30 - 6.83
229Lentil Soup5.80
230Lettuce5.80 - 6.15
231Lettuce, Boston5.89 - 6.05
232Lettuce, Iceberg5.70 - 6.13
233Lime Juice2.00 - 2.35
234Lime2.00 - 2.80
235Lobster bisque6.90
236Lobster soup5.70
237Lobster, cooked7.10 - 7.43
238Loganberries2.70 - 3.50
239Loquat (May be acidified to pH 3.8)5.10
240Lotus Root6.90
241Lychee4.70 - 5.01
242Macaroni, cooked5.10 - 6.41
243Mackerel, King, boiled6.26 - 6.50
244Mackerel, Spanish, broiled6.07 - 6.36
245Mackerel, canned5.90 - 6.40
246Mangoes, ripe3.40 - 4.80
247Mangoes, green5.80 - 6.00
248Mangostine ?4.50 -5.00
249Maple syrup5.15
250Maple syrup, light (Acidified)4.60
251Matzos5.70
252Mayhaw (a variety of strawberry)3.27 - 3.86
253Melba Toast5.08 - 5.30
254Melon, Casaba5.78 - 6.00
255Melons, Honey dew6.00 - 6.67
256Melons, Persian5.90 - 6.38
257Milk, cow6.40 - 6.80
258Milk, Acidophilus4.09 - 4.25
259Milk, condensed6.33
260Milk, evaporated5.90 - 6.30
261Milk, Goat's6.48
262Milk, peptonized7.10
263Milk, Sour, fine curd4.70 - 5.65
264Milkfish5.30
265Mint Jelly3.01
266Molasses4.90 - 5.40
267Muscadine (A variety of grape)3.20 - 3.40
268Mushrooms6.00 - 6.70
269Mushrooms, cooked6.00 - 6.22
270Mushroom Soup, Cream of, canned5.95 - 6.40
271Mussels6.00 - 6.85
272Mustard3.55 - 6.00
273Nata De Coco5.00
274Nectarines3.92 - 4.18
275Noodles, boiled6.08 - 6.50
276Oatmeal, cooked6.20 - 6.60
277Octopus6.00 - 6.50
278Okra, cooked5.50 - 6.60
279Olives, black6.00 - 7.00
280Olives, green, fermented3.60 - 4.60
281Olives, ripe6.00 -7.50
282Onions, pickled3.70 - 4.60
283Onions, red5.30 - 5.80
284Onion white5.37 - 5.85
285Onions, yellow5.32 - 5.60
286Oranges, Florida3.69 - 4.34
287Oranges, Florida "color added"3.60 - 3.90
288Orange Juice, California3.30 - 4.19
289Orange, Juice Florida3.30 - 4.15
290Orange, Marmalade3.00 - 3.33
291Oysters5.68 - 6.17
292Oyster, smoked6.00
293Oyster mushrooms5.00 - 6.00
294Palm, heart of6.70
295Papaya5.20 - 6.00
296Papaya Marmalade3.53 - 4.00
297Parsley5.70 - 6.00
298Parsnip5.30 - 5.70
299Parsnips, cooked5.45 - 5.65
300Pate5.90
301Peaches3.30 - 4.05
302Peaches, canned3.70 - 4.20
303Peaches, cooked with sugar3.55 - 3.72
304Peaches, frozen3.28 - 3.35
305Peanut Butter6.28
306Peanut Soup7.50
307Pears, Bartlett3.50 - 4.60
308Pears, canned4.00 - 4.07
309Pears, Sickle cooked w/sugar4.04 - 4.21
310Pear Nectar4.03
311Peas, canned5.70 - 6.00
312Peas, Chick, Garbanzo6.48 - 6.80
313Peas, cooked6.22 - 6.88
314Peas, dried (split green), cooked6.45 - 6.80
315Peas, dried (split yellow), cooked6.43 - 6.62
316Peas, frozen, cooked6.40 - 6.70
317Peas, pureed4.90 - 5.85
318Pea Soup, Cream of, Canned5.70
319Peas, strained5.91 - 6.12
320Peppers4.65 - 5.45
321Peppers, green5.20 - 5.93
322Persimmons4.42 - 4.70
323Pickles, fresh pack5.10 - 5.40
324Pimiento4.40 - 4.90
325Pimento, canned, acidified4.40 - 4.60
326Pineapple3.20 - 4.00
327Pineapple, canned3.35 - 4.10
328Pineapple Juice, canned3.30 - 3.60
329Plum Nectar3.45
330Plums, Blue2.80 - 3.40
331Plums, Damson2.90 - 3.10
332Plums, Frozen3.22 - 3.42
333Plums, Green Gage3.60 - 4.30
334Plums, Green Gage, canned3.22 - 3.32
335Plums, Red3.60 - 4.30
336Plums, spiced3.64
337Plums, Yellow3.90 - 4.45
338Pollack, filet, broiled6.72 - 6.82
339Pomegranate2.93 - 3.20
340Porgy, broiled6.40 - 6.49
341Pork & Beans, rts.5.70
342Potatoes5.40 - 5.90
343Potatoes Mashed5.10
344Prunes, dried, stewed3.63 - 3.92
345Potatoes Sweet5.30 - 5.60
346Potatoes Tubers5.70
347Potato Soup5.90
348Prune Juice3.95 - 3.97
349Prune, pureed3.60 - 4.30
350Prune, strained3.58 - 3.83
351Puffed Rice6.27 - 6.40
352Puffed Wheat5.26 - 5.77
353Pumpkin4.90 - 5.50
354Quince, fresh, stewed3.12 - 3.40
355Quince Jelly3.70
356Radishes, red5.85 - 6.05
357Radishes, white5.52 - 5.69
358Raisins, seedless3.80 - 4.10
359Rambutan (Thailand)4.90
360Raspberries3.22 - 3.95
361Raspberries, frozen3.18 - 3.26
362Raspberries, New Jersey3.50 - 3.82
363Raspberry Jam2.87 - 3.17
364Razor Clams6.20
365Razor shell (sea asparagus)6.00
366Rattan, Thailand5.20
367Red Ginseng5.50
368Red Pepper Relish3.10 - 3.62
369Rhubarb, California, stewed3.20 - 3.34
370Rhubarb3.10 - 3.40
371Canned3.40
372Rice Brown6.20 - 6.80
373Rice Krispies5.40 - 5.73
374Rice White6.00 - 6.70
375Rice Wild6.00 - 6.50
376Rolls, white5.46 - 5.52
377Romaine5.78 - 6.06
378Salmon, fresh, boiled5.85 - 6.50
379Salmon, fresh, broiled5.36 - 6.40
380Salmon, Red Alaska, canned6.07 - 6.16
381Sardines5.70 - 6.60
382Sardine, Portuguese, in olive oil5.42 - 5.93
383Satay sauce5.00
384Sauce, Enchilada5.50
385Sauce, Fish4.93 - 5.02
386Sauce, Shrimp7.01 - 7.27
387Sauerkraut3.30 - 3.60
388Scallion6.20
389Scallop6.00
390Scotch Broth.5.92
391Sea Snail (Top shell)6.00
392Shad Roe, sauted5.70 - 5.90
393Shallots, cooked5.30 - 5.70
394Sherbet, raspberry3.69
395Sherry-wine3.37
396Shredded Ralston5.32 - 5.60
397Shredded Wheat6.05 - 6.49
398Shrimp6.50 - 7.00
399Shrimp Paste5.00 - 6.77
400Smelts, Sauted6.67 - 6.90
401Soda Crackers5.65 - 7.32
402Soup Broccoli Cheese Suop, condensed5.60
403Soup Chicken Broth, rts.5.80
404Soup Corn condensed6.80
405Soup Cream of celery condensed6.20
406Soup Cream of Mushroom, condensed6.00 - 6.20
407Soup Cream style corn, condensed5.70 - 5.80
408Soup Cream of Potato condensed5.80
409Soup Cream of shrimp condensed 5.80
410Soup Minestronen condensed 5.40
411Soup New England Clam Chowder,condensed6.00
412Soup Oyster Stew, condensed6.30
413Soup Tomato Rice condensed5.50
414Soy infant formula6.60 - 7.00
415Soy Sauce4.40 - 5.40
416Soy bean curd (tofu)7.20
417Soybean milk7.00
418Spaghetti, cooked5.97 - 6.40
419Spinach5.50 - 6.80
420Spinach, chopped5.38 - 5.52
421Spinach, cooked6.60 - 7.18
422Spinach, frozen, cooked6.30 - 6.52
423Spinach, pureed5.50 - 6.22
424Spinach, strained5.63 - 5.79
425Squash, acorn, cooked5.18 - 6.49
426Squash, Kubbard, cooked6.00 - 6.20
427Squash, white, cooked5.52 - 5.80
428Squash, yellow, cooked5.79 - 6.00
429Squid6.00 - 6.50
430Sturgeon6.20
431Strawberries3.00 - 3.90
432Strawberries, California3.32 - 3.50
433Strawberries, frozen3.21 - 3.32
434Strawberry Jam3.00 - 3.40
435Straw mushroom4.90
436Sweet Potatoes5.30 - 5.60
437Swiss Chard, cooked6.17 - 6.78
438Tamarind3.00
439Tangerine3.32 - 4.48
440Taro syrup4.50
441Tea7.20
442Three-Bean Salad5.40
443Tofu (soybean Curd)7.20
444Tomatillo (resembling Cherry tomatoes)3.83
445Tomatoes4.30 - 4.90
446Tomatoes, canned3.50 - 4.70
447Tomatoes, Juice4.10 - 4.60
448Tomatoes, Paste3.50 - 4.70
449Tomatoes, Puree4.30 - 4.47
450Tomatoes, Strained4.32 - 4.58
451Tomatoes, Wine ripened4.42 - 4.65
452Tomato Soup, Cream of, canned4.62
453Trout, Sea, sauted6.20 - 6.33
454Truffle5.30 - 6.50
455Tuna Fish, canned5.90 - 6.20
456Turnips5.29 - 5.90
457Turnip, greens, cooked5.40 - 6.20
458Turnip, white, cooked5.76 - 5.85
459Turnip, yellow, cooked5.57 - 5.82
460Vegetable Juice3.90 - 4.30
461Vegetable soup, canned5.16
462Vegetable soup, chopped4.98 - 5.02
463Vegetable soup, strained4.99 - 5.00
464Vermicelli, cooked5.80 - 6.50
465Vinegar2.40 - 3.40
466Vinegar, cider3.10
467Walnuts, English5.42
468Wax gourd drink7.20
469Water Chestnut6.00 - 6.20
470Watercress5.88 - 6.18
471Watermelon5.18 - 5.60
472Wheat Krispice4.99 - 5.62
473Wheatnena5.85 - 6.08
474Wheaties5.00 - 5.12
475Worcestershire sauce3.63 - 4.00
476Yams, cooked5.50 - 6.81
477Yeast5.65
478Yangsberries, frozen3.00 - 3.70
479Zucchini, cooked5.69 - 6.10
480Zwiebach4.84 - 4.94
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