本书以通俗浅显的语言介绍了营养学基本知识，并运用现代营养学、食品卫生学的基础理论与基本方法来研究食品营养价值、食品卫生与人体健康的关系，以及加工过程中各种营养素生化变化情况。通过学习食品营养与卫生基础知识，使大学生了解食物中的各种营养素及其对人体的作用；掌握人体所需要的七种营养素的理化性质、主要功用、来源、需要量及食物中所含各类营养素的情况；让大学生了解合理烹调与合理营养的重要性、合理营养的基本要求、食品在加工时对营养素的影响及提高营养水平的途径；懂得如何在加工过程中保护和提高营养；了解《中华人民共和国食品安全法》，并掌握保证食品卫生质量的基本要求与基本方法；掌握特殊人群、常见慢性病患者的膳食特点，合理制定食谱，以维护健康；使大学生能够融会贯通地利用食品营养与卫生知识，成为自己生活的主人。合理营养的原则以及方法是人们促进健康的一个重要工具，运用它可以充分调动大学生自我保健的积极性。只要根据自己的条件，合理组合市场上的各类食物，就可以达到膳食平衡的目的。好的营养并不意味着高消费、高投入，更不是非依靠保健食品不可。编者以科学为基础，创新地提出了以食物为基础的大学生饮食营养的膳食指南，并为实施大学生饮食营养设计了通俗易懂、便于掌握的平衡膳食方法。本书是向大学生进行营养教育，引导合理食物消费和坚持有益健康的膳食模式的基本原则。正由于它是在中国人的膳食特点和饮食习惯的基础上，融人了合理营养的现代科学成就，它不仅是科学的、合理的，而且是可行的、易于操作的。为了反映国内外饮食营养与健康发展动态，同时也使大学生对饮食营养与健康有一个概括性了解，编者在第一版和教学实践的基础上，从偏重实用性出发，增加了食品安全等内容。((The book introduces the basic knowledge of nutriology in simple words, studies the relationship among the nutritional value of food, food hygiene and human health and the chemical changes of different nutrients in the course of processing by using the basic theory and basic methods of modern nutriology and food hygiene.Through the study of food nutrition and basic health knowledge, students will be able to understand the various nutrients in the food and their effects on the human body; master the physical and chemical properties, main function, source and requirement of seven kinds of nutrients required by the body as well as the content of various nutrients contained in food; get to know the importance of reasonable cooking and reasonable nutrition, basic requirements of reasonable nutrition, influence of food processing upon nutrients, and ways to improve the nutritional level; have awareness of Food Safety Law of the People's Republic of China, and master the basic requirements and methods to protect food hygiene and quality; grasp the diet characteristics of the special people groups and patients with common chronic illness, so as to prepare reasonable diets and maintain health; and masterly use the knowledge about food nutrition and hygiene to become the master of their life.The principles and methods of reasonable nutrition is an important means for people to improve their health. And it can fully mobilize the enthusiasm of college students on healthcare.With the reasonable combination of different kinds of food on the market according to our own conditions, we can achieve a balanced diet.Good nutrition does not mean high consumption and high investment, nor has to rely on healthcare food.On the basis of science, the author creatively put forward a dietary guide on food-based nutrition for college students, and designed a balanced diet method that is easy to understand and easy to master in the implementation of college students' diet nutrition program.The book is designed to provide nutrition education for college students, guide them with rational food consumption and adhere to the basic principle of following the healthy diets.Based on the dietary characteristics and dietary habits of the Chinese people, it not only contains scientific achievements on reasonable nutrition, but is also feasible and easy to operate.To reflect the development dynamics of dietary nutrition and health at home and abroad, and also to enable the college students to have a general understanding of diet nutrition and health, the author increased the knowledge about food safety on the basis of the first edition and teaching practice, making this book more practical.)