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第一节 概述 第二节 卟啉类色素 Porphyrin

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Vitamins, by their definition, are essential to health and have to be obtained from the diet on a regular basis because, with the exception of vitamin D, they cannot be produced by the body. In terms of medicine and nutrition, our knowledge of vitamins is relatively recent. Although James Lind discovered an association

Generally, the effects of microwave energy can be classified as either ‘macro￾scopic’ or ‘microscopic’. When the energy is used for heating food the effect is macroscopic and results in a specific heating pattern. However, the causes of certain features are due to microscopic effects, i.e. to physics at the atomic level

速冻食品 Fast Frozen Food 是采用新鲜原料，经过适当的处理，急速冷冻，再妥善保存， 于摄氏零下十八度以下的连贯低温条件下送抵消费地点的低温产品，其最大优点完全以低温来 保存食品原来品质，而不借助任何防腐剂和添加剂，同时具有美味、方便、健康、卫生、营 养、实惠的好处

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