By broking the wall of powdered oils with ultrasonic, the oil extraction efficiency yield was 65%, which met the need of determining POV.

超声波破壁法提油其提油率可达65%左右，可满足测定要求。

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A new method was built to determine the POV of powdered oils by broking the wall with ultrasonic and then extracting the oil to determine the POV.

建立了一种简单、重复性好的超声波破壁提油测定粉末油脂中油脂过氧化值的新方法。

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Hardest to find is cooking oil, but chicken, powdered milk and cheap varieties of cheese, along with sugar and meat, are also scarce.

最难找到的是食用油，不过鸡肉、奶粉和各种廉价奶酪，以及糖和肉也很少。

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In Latin America where staples such as powdered milk, cooking oil and rice have risen in price by up to 40% people say they are now more likely to buy food frequently and in modest amounts.

ECONOMIST: Saving money: Where the shoe pinches | The

Another preparation involves first heating powdered spices such as turmeric, cumin and coriander in oil so their different chemicals mix, then adding fresh ingredients, such as garlic, ginger and onions.

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