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维生素的发现 1886年荷兰 Eijkman医生研究在亚洲普遍流行 的脚气病,企图找到引起该病的细菌,但未 成功。1890年,在他的实验鸡群中爆发了多 发性神经炎,症状与脚气病极为相似
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糖类与食品的加工和贮藏,关系十分密切,如还原糖能使食品变褐;食品能保持有粘弹性是由于含有淀粉 与果胶等;至于食品中所具有的甜味,大部分也是由于糖类引起的
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Like all other foods of plant or animal origin, milk contains several indigenous enzymes which are constituents of the milk as secreted. The principal constituents of milk (lactose, lipids and proteins) can be modified by exogenous enzymes, added to induce specific changes. Exogenous en- zymes may also be used to analyse for certain constituents in milk. In addition, milk and most dairy products
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The water content of dairy products ranges from around 2.5 to 94%(w/w) (Table 7.1) and is the principal component by weight in most dairy products, including milk, cream, ice-cream, yogurt and most cheeses. The moisture content of foods (or more correctly their water activity, section 7.3), together with temperature and pH, are of great importance to food technology. As described in section 7.8 water plays an extremely important
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Vitamins are organic chemicals required by the body in trace amounts but which cannot be synthesized by the body. The vitamins required for growth and maintenance of health differ between species; compounds regarded as vitamins for one species may be synthesized at adequate rates by other species. For example, only primates and the guinea-pig require ascorbic acid (vitamin C; section 6.4) from their diet; other species possess the enzyme gluconolactone oxidase which is necessary for the synthesis of vitamin C from D-glucose or D-galactose
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核酸存在于每一个活细胞中,是遗传信息的携带者和传递者。核酸由核苷酸所组成,核苷酸的组成物质为嘌呤、嘧啶、核酸及核糖(或脱氧核糖)
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第一节 基因表达与基因表达调控的基本概念与特点 Basic Conceptions and Characters of Gene Expression and it’s Regulation 第二节 原核基因表达调控 Regulation of Gene Expression in Prokaryote 第三节 真核基因表达调控 Regulation of Gene Expression in Eukaryote
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第一节 DNA损伤 DNA Damage 第二节 DNA损伤的修复 The repair of DNA damage 第三节 DNA损伤和修复的意义 The significance of DNA damage and repair
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第十二章 物质代谢的整合与调节 Metabolic Interrelationships & Regulation 第二节 物质代谢的相互联系 Metabolic Interrelationships 第三节 肝在物质代谢中的作用 Function of Liver in Material Metabolism 第五节 物质代谢调节的主要方式 The Way for Regulation of Metabolism
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第一节 细胞信号转导概述 The General Information of Signal Transduction 第二节 细胞内信号转导分子 Intracellular Signal Molecules 第三节 细胞受体介导的细胞内信号转导 Signal Pathways Mediated by Different Receptors 第四节 信号转导的基本规律和复杂性 The basic rule and complexity of signal transduction and
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