§ 172.190 THBP.
The food additive THBP （2,4,5-trihydroxybutyrophenone） may be safely used in food in accordance with the following prescribed conditions:
（a） The food additive has a melting point of 149 °C–153 °C.
（b） It is used as an antioxidant alone or in combination with other permitted antioxidants.
（c） The total antioxidant content of a food containing the additive will not exceed 0.02 percent of the oil or fat content of the food, including the essential （volatile） oil content of the food.
更多关于美国 FDA 已批准的直接用于人类食品的添加剂种类法规，请点击美国FDA 21 CFR 第172部分已批准的直接用于人类食品的添加剂种类汇总
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