Many of today's margarines and butter alternatives are made with poly-unsaturated fats and thus require refrigeration.
现在许多人造奶油和黄油都是用多不饱和脂肪酸做的，因此需要冷冻保藏。
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The Recommended Daily Allowance is 5 micrograms and good dietary sources are dairy produce (not low fat), oily fish, cod liver oil, egg yolk, fortified margarines.
Trans Fatty Acids: Imitation fats in shortenings, margarines and most commercial baked goods and snack foods. Strongly associated with cancer of the lungs and reproductive organs.