The activity of polyphenol oxidase (PPO) inlactuca sativa var. angustata was analyzed using heat treatment method to control its enzymatic browning.

研究了热处理法钝化苔干多酚氧化酶（PPO）活性，从而控制酶促褐变的工艺条件及效果。

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Best of all, the adjustable Browning control makes waffles golden brown and crispy on the outside and meltingly tender on the inside.

最重要的是，可调节的色泽控制，可使华夫饼金黄香脆、外焦里嫩。

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The effects of different colour fixative (VC. NaHSO3 and citrus acid ) on browning - control of Ya pear juice were studied.

以鸭梨为原料，研究了不同护色列（维生素C、亚硫酸氢钠和柠檬酸）对梨汁褐变的影响。

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Browning said the cruise control position, the placement of cup holders, air conditioning controls, seat adjustments and other items that annoy U.S. customers are being changed before cars are built.

WSJ: VW's chief in US expects sales to keep growing