Oxalic acid

From Cookipedia



Sorrel, an interesting, yet fairly uncommon vegetable / herb that is high in oxalic acid.

Oxalic acid is an organic compound with the formula H2C2O4. It is a colourless crystalline solid that dissolves in water to give colourless solutions.

Occurrence in foods and plants

Calcium oxalate is the most common component of kidney stones. Early investigators isolated oxalic acid from wood-sorrel (Oxalis). Its presence makes it dangerous to eat unripe carambola or monstera fruits. Members of the spinach family are high in oxalates, as is sorrel. Rhubarb leaves contain about 0.5% oxalic acid and jack-in-the-pulpit (Arisaema triphyllum) contains calcium oxalate crystals. ===Industrial uses=This table was originally published in Agriculture Handbook No. 8-11, Vegetables and Vegetable Products, 1984.

Vegetable Oxalic acid (g/100 g)
Amaranth 7000109000000000000 1.09
Asparagus 6999130000000000000 .13
Beans, snap 6999360000000000000 .36
Beet leaves 6999610000000000000 .61
Broccoli 6999190000000000000 .19
Brussels sprouts 6999360000000000000 .36
Cabbage 6999100000000000000 .10
Carrot 6999500000000000000 .50
Cassava 7000126000000000000 1.26
Cauliflower 6999150000000000000 .15
Celery 6999190000000000000 .19
Chicory 6999210000000000000 .21
Chives 7000148000000000000 1.48
Collards 6999450000000000000 .45
Coriander 6998100000000000000 .01
Corn, sweet 6998100000000000000 .01
Cucumbers 6998200000000000000 .02
Eggplant 6999190000000000000 .19
Endive 6999110000000000000 .11
Garlic 6999360000000000000 .36
Kale 6998200000000000000 .02
Lettuce 6999330000000000000 .33
Okra 6998500000000000000 .05
Onion 6998500000000000000 .05
Parsley 7000170000000000000 1.70
Parsnip 6998400000000000000 .04
Pea 6998500000000000000 .05
Bell Pepper 6998400000000000000 .04
Potato 6998500000000000000 .05
Purslane 7000131000000000000 1.31
Radish 6999480000000000000 .48
Rutabaga 6998300000000000000 .03
Spinach 6999970000000000000 .97
Squash 6998200000000000000 .02
Sweet potato 6999240000000000000 .24
Tomato 6998500000000000000 .05
Turnip 6999210000000000000 .21
Turnip greens 6998500000000000000 .05
Watercress 6999310000000000000 .31

See also

reference source


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