食品专业英语6 mineral电子课件.ppt
食品专业英语6 mineral 电子课件Mineral 食品专业英语Unit 6 食品专业英语一.词汇讲解二.课文阅读三.课后练习p calcium 钙p chelate 螯合p cofactor 辅因子p copper 铜p chromium 铬p discoloration 变色p homeostasis 动态平衡p hormone 激素p inorganic 无机的p iodine 碘一.词汇讲解p iron 铁p magnesium 镁p manganese 锰p mineral 矿物质p molybdenum 钼p potassium 钾p phosphorus 磷p selenium 硒p silicon 硅p sodium 钠p symptoms 症状p zinc 锌一.词汇讲解 In general,minerals are the constituents which remain as ash after the combustion of plant and animal tissues.Human body uses minerals to activate the enzymes,hormones,and other molecules that participate in the function and maintenance of life processes.矿物质通常指动植物组织经过燃烧后剩余的灰分。人体能利用矿物质激活参与维持机体生理功能的酶、激素和其他分子。译文Para.1二.课文阅读 Mineral elements are present in relatively low concentrations in foods.Nevertheless,they play key functional roles in both living systems and foods.Minerals are absolutely essential,as they cannot be synthesized by the body.食物中的矿物质浓度也相对较低，尽管如此，他们在生命系统和食品中都起着重要作用。由于人体自身不能合成矿物质，因此他们是人体必不可少的元素。译文Para.2二.课文阅读 Principles of Mineral Chemistry Many different chemical forms of mineral elements are present in foods.These forms are commonly referred to as species and include compounds,complexes,and free ions.矿物质化学性质矿物质元素以不同的形式存在于食品中，包括化合物、复合物和游离离子的形式。译文Para.3二.课文阅读 Function and classfication Minerals have several functions in the body.Body building minerals serve as structural constituents in the hard tissues of the body,such as the bones and teeth.Thus,the minerals are needed in comparatively large amounts to help normal growth and development of bones and teeth.功能和分类矿物质对机体有多种功能，他们是构成机体结构组织的成分，如骨骼和牙齿，因此，机体需要大量的矿物质来帮助骨骼和牙齿的正常生长发育。译文Para.4二.课文阅读 What has become more widely recognized is that a number of minerals are required by the body,and deficiencies in these minerals may not produce obvious symptoms but can still result in poor health or a shortened life expectancy.众所周知，人体需要多种矿物质，这些矿物质的缺乏可能不会产生明显的症状，但仍然会导致健康状况不佳或者预期寿命缩短。译文Para.5二.课文阅读 Even some minerals once considered solely“toxic”have now been identified as important in supporting longevity and quality of life.Selenium was long viewed as a toxic compound,but several international studies have demonstrated that dietary selenium markedly reduces the incidences of and death from cancer.即使一些曾被认为是“有毒”的矿物质，现在已经确定他们对长寿和生活质量的影响非常重要。硒就被长期视为一种有毒物质，但一些国际研究表明，膳食中的硒显著降低了癌症的发生率和死亡率。译文Para.6二.课文阅读 There are two groups of minerals,major minerals and trace minerals.Major minerals(also known as macrominerals or macroelements)are needed in the diet in amounts of 100 mg or more each day.They include calcium,magnesium,sodium,potassium and phosphorus.Macrominerals are present in virtually all cells of the body,maintaining general homeostasis,and are required for normal functioning.矿物质可分为主要矿物质和微量矿物质。主要矿物质也称为大量矿物质或常量元素，每日膳食中大量矿物质需要量为100mg 以上。它们包括钙、镁、钠、钾、磷。大量矿物质几乎存在于身体所有细胞中，用来维持体内动态平衡和正常功能。译文Para.7二.课文阅读 All biological systems contain water,and most nutrients are delivered to and metabolized by organisms in an aqueous environment.Thus the availabilities and reactivities of minerals depend,in large part,on solubility in water.所有生物系统都含有水分，生物体中的大多数营养物质都是在水环境中进行传递和代谢的。因此，矿物质的可利用性和反应活性在很大程度上取决于其在水中的溶解度。译文Para.8二.课文阅读A1.Answer Questions(1)What are the functions of minerals?(2)Which are the major minerals and which are the trace minerals?三.exerciseBelive yourself!You will succeed!
