Assertion: berry's acid | /r/HasProperty | about 0.4%-0.7%
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Source sentences:
text: Rowan fruit contains sorbic acid, and when raw also contains parasorbic acid (about 0.4%-0.7% in the European rowan), which causes indigestion and can lead to kidney damage, but heat treatment (cooking, heat-drying etc.) and, to a lesser extent, freezing, renders it nontoxic by changing it to the benign sorbic acid.