水果都含有丰富的维生素c

水果都含有丰富的维生素c 水果都含有丰富的维生素,苹果具备减肥,亮嗓作用.梨具有 止咳化痰作用.柠檬能增强记忆力.桃能美肤作用...... 一: 水果到底应该饭前吃，还是饭后吃, 空腹的时候胃酸比较多，这时食用水果的话，会刺激胃分泌更多的胃酸，导致胃部不适;因此，饭中、饭后吃水果，比较妥当。 二:酸、甜果类可否一起食用, 网路盛传:葡萄柚、凤梨、橘子、柠檬等酸味水果，不适合与释迦、西瓜、甜瓜、香蕉等甜味水果一起食用，否则会引发腹胀不适;其实混吃无妨，但先吃酸的，再吃甜的比较好;倘若先甜后酸，那么酸的水果会因为味觉疲乏而让人觉得"更酸"～ 三: 橘子能不能与萝卜同食, 橘子忌与白萝卜同食，是因为白萝卜食后产生的"硫氰酸"代谢物，易与橘子中的类黄酮物质所产生的代谢物互相作用，抑制人体吸收碘，导致甲状腺功能不彰;其实，包括高丽菜、小白菜都有这种副作用，但若非"大量食用"，否则不必过虑。 四: 葡萄柚利不利部分心血管疾病用药的代谢, 葡萄柚若与降血压、降血脂、镇静剂及抗组织胺药物混合食用，会导致这类药物不易从肝脏代谢排出，留在体内造成血液中药量浓度上升。 五: 桃子可不可以与甲鱼一起吃, 桃子若与甲鱼(鳖)一起吃，容易出现腹泻;理由是，甲鱼为"滋腻"补品，本来就不好消化，桃子又容易导致胀气，两者相加，身体自然会感到不适。 六:海鲜可不可以与水果同食, 海鲜中的钙质和水果中的鞣酸，会结合形成不易消化物质，导致肠胃不适，产生腹痛、恶心呕吐等现象。含鞣酸较多的食物，如柿子、葡萄、石榴、山楂、橄榄等，不宜与海鲜同食。 七: 感冒时，可不可以吃水果, 老一辈的人常说，感冒就是受到风寒，水果属寒性，感冒时吃水果，等于寒上加寒～其实，professional engineer 1, each equipped with the professional technician 1, 2 technicians, carry out their duties. By the Resident Engineer of the conservation section chiefs and marketing grasp work and coordination. Six and lawn maintenance, planting is completed, often with a 1-2 lawn maintenance can grow into the fullness of the week. After the lawn grow, but also to carry out regular maintenance and management, to ensure the lawn landscape continues for a long time. Lawn maintenance management including: irrigation, fertilization, pruning, weeding and other links. 1, irrigate irrigation lawn fertility environments can be improved, adding water plant the lawn, is a guarantee of normal lawn. In view of the lawn during the growth season, lawn and the environment is in a State of flux, coordination of water and soil and improving the microclimate of the Center, water cannot be implemented according to a fixed pattern, following a number of technical points for reference. (1) the irrigation time growing season, according to the different periods of precipitation is extremely important and timely irrigation of different grass species. Can generally be divided into three periods: ? turned green before the rainy season. High temperatures during this period, transpiration, water requirements, and is one of the most crucial irrigation under soil water retention properties of strength and rainy periods during which Bush 2-4. ? largely ceased during the rainy season irrigation. Air humidity during this period, grass transpiration decreased soil moisture content has increased to a level sufficient to meet the needs of lawn growth. ? to yellowing of the leaf after this period before the rainy season precipitation, evaporation is greater, 水果富含维他命C，在感冒期间对改善病情是有帮助的，但是，包括橘子、香瓜、水梨、番茄等较寒的水果，确实不宜吃太多，多喝水倒是比较有帮助。 1.饭前还是饭后吃水果好, 饭前还是饭后食用水果，要依各人体质而定。美国的研究发现，饭前1,2个小时吃水果或饮果汁，水果或果汁内的糖分能在一定程度上满足体内热量的需求，从而减少对食物的需求量。因此想减肥的人，不妨在饭前1,2个小时吃点水果。但是消化功能不良者最好在饭后1小时再吃水果。 2.水果应该带皮吃还是削皮吃, 通常果皮中的维生素C比果肉含得多。在100克鲜柑橘、柠檬或甜橙的果皮中，维生素C的含量为130、140和170毫克，而100克鲜柑橘、柠檬和甜橙的果肉中所含的维生素C为38、65和55毫克。100克苹果果肉仅含12,13毫克维生素C，而100克鲜苹果皮含60毫克。因此，从获取维生素C的角度讲，水果带皮吃好。 但考虑到水果在采摘前可能被喷打农药，采摘后又人工催熟，或为了储藏保鲜而进行皮上蜡，为安全起见，水果还是削皮吃好。但是葡萄不好削皮，因此吃前要认真清洗。而且葡萄皮所含白藜芦醇较多，白藜芦醇对保护血管有效。 3.烂水果削掉腐败部分后还能吃吗, 有人认为，把坏的部分去掉了，吃余下好的部分不会影响健康。也有街头不法小贩将出现部分腐烂的西瓜、哈密瓜、菠萝切块卖给顾客。其实，病原微生物侵入果品造成局部溃烂，肉眼很容易看到，但在腐败过程中产生的有害、有毒物质会污染尚未发生病变的果肉，则是肉眼看不到的，有些真菌及其毒素还具有致癌作用，食用后对人体有害。所以，就算已经剔除了腐烂的部分，这样的水果仍不能吃。 4.是不是进口的水果更有营养, 加入WTO后，很多“洋水果”进入了中国市场。由于品种、栽培技术、气候条件、分级包装等技术手段，使得进口水果的外观胜出一筹。尤其是其精湛的上蜡工艺，更使得果品色泽鲜艳，光亮照人。为了达到防腐保鲜的目的，有的进口果品还在涂料中加入了激素、防腐剂、石蜡、树胶等物质，尽管大部分果品涂料具有可食性。其实，进口水果不一定比国内果品更有营养，人们不必过于追新求异。 5.吃菜可以代替吃水果吗, professional engineer 1, each equipped with the professional technician 1, 2 technicians, carry out their duties. By the Resident Engineer of the conservation section chiefs and marketing grasp work and coordination. Six and lawn maintenance, planting is completed, often with a 1-2 lawn maintenance can grow into the fullness of the week. After the lawn grow, but also to carry out regular maintenance and management, to ensure the lawn landscape continues for a long time. Lawn maintenance management including: irrigation, fertilization, pruning, weeding and other links. 1, irrigate irrigation lawn fertility environments can be improved, adding water plant the lawn, is a guarantee of normal lawn. In view of the lawn during the growth season, lawn and the environment is in a State of flux, coordination of water and soil and improving the microclimate of the Center, water cannot be implemented according to a fixed pattern, following a number of technical points for reference. (1) the irrigation time growing season, according to the different periods of precipitation is extremely important and timely irrigation of different grass species. Can generally be divided into three periods: ? turned green before the rainy season. High temperatures during this period, transpiration, water requirements, and is one of the most crucial irrigation under soil water retention properties of strength and rainy periods during which Bush 2-4. ? largely ceased during the rainy season irrigation. Air humidity during this period, grass transpiration decreased soil moisture content has increased to a level sufficient to meet the needs of lawn growth. ? to yellowing of the leaf after this period before the rainy season precipitation, evaporation is greater, 一些水果所含的具有其特殊功能的物质，如白藜芦醇、苹果酸、苦杏仁甙、柠檬苦素、木瓜蛋白酶、番茄和西瓜中的番茄红素等，对人体均能产生特殊功效，而这些物质都是蔬菜所没有的。因此，我们应当既吃蔬菜，也吃水果。 6.食用反季节水果安全吗, 在科技发达的今天，利用日光、温室等科技手段和设备，即使是在冰天雪地的北方，人们也可以吃到现摘下的西瓜、草莓、葡萄、甜瓜，甚至是热带水果木瓜、番石榴等。 所谓反季节水果，就是指这些利用设备栽培的水果。虽然反季节水果比贮藏的水果新鲜，但又存在一些不可克服的缺点:比同类应季水果贵，可质量并不一定高，不仅维生素C含量低，而且往往风味不足，口感欠佳。一些不法商贩为了销售货品，常利用化学试剂催熟反季节水果。如用催熟剂乙烯利催熟葡萄，尽管此药毒性较低，但长期食用对人体有害。还有的商贩为了让香蕉表皮嫩黄好看，使用二氧化硫熏蒸香蕉。二氧化硫及其衍生物不仅对人体的呼吸系统产生危害，还会引起其他脏器的病变。用催熟剂、膨大剂等激素类物质催熟增大的草莓，个儿大，形状不规则，外观挺好看，但味道很差。 7.怎样去除水果上残留的农药, 了解、掌握购买果品的常识性知识，才能辨别水果的正常颜色、气味、成熟度，才能买到优质水果。通常颜色和形体异常的果品可能在生长中使用了激素、色素或进行了熏蒸。果品表面留有药斑或有异常、刺鼻化学味道的果品更不能买。 为安全起见，买到家的水果，要在食用前认真清洗。对于表皮不光滑的水果，要用毛刷刷洗。能去皮的水果可在去皮后食用。 8.如何挑选新鲜水果, 一看:新鲜的水果表皮光滑，色泽亮丽，有光彩。不新鲜的水果因失水而造成萎蔫，表皮发皱，不光亮。自然成熟的水果果皮颜色均匀，人工催熟的水果果皮颜色不自然，色泽深。个头儿超大的果品很可能使用了膨大剂。 二摸:自然成熟的水果有弹性，而不熟的或人工催熟的水果手感较硬，果实发沉。 三闻:成熟适度、品质优良的水果有其特有的果香。 四尝:好不好，一尝就知道了。 9.水果应该怎样保存, professional engineer 1, each equipped with the professional technician 1, 2 technicians, carry out their duties. By the Resident Engineer of the conservation section chiefs and marketing grasp work and coordination. Six and lawn maintenance, planting is completed, often with a 1-2 lawn maintenance can grow into the fullness of the week. After the lawn grow, but also to carry out regular maintenance and management, to ensure the lawn landscape continues for a long time. Lawn maintenance management including: irrigation, fertilization, pruning, weeding and other links. 1, irrigate irrigation lawn fertility environments can be improved, adding water plant the lawn, is a guarantee of normal lawn. In view of the lawn during the growth season, lawn and the environment is in a State of flux, coordination of water and soil and improving the microclimate of the Center, water cannot be implemented according to a fixed pattern, following a number of technical points for reference. (1) the irrigation time growing season, according to the different periods of precipitation is extremely important and timely irrigation of different grass species. Can generally be divided into three periods: ? turned green before the rainy season. High temperatures during this period, transpiration, water requirements, and is one of the most crucial irrigation under soil water retention properties of strength and rainy periods during which Bush 2-4. ? largely ceased during the rainy season irrigation. Air humidity during this period, grass transpiration decreased soil moisture content has increased to a level sufficient to meet the needs of lawn growth. ? to yellowing of the leaf after this period before the rainy season precipitation, evaporation is greater, 果蔬维生素C的下降程度主要取决于果蔬的种类及贮藏条件。多数维生素C含量高的果蔬，在贮藏过程中损耗得也多。水果最好吃多少买多少，放得愈久，水果的营养及口味就愈差。大部分水果无须清洗即可直接放进冰箱保存，并应在一周内吃完，否则容易腐烂变质。而香蕉、凤梨、芒果、木瓜、柠檬等水果，只需在室内阴凉的角落处存放即可，不宜长时间冷藏. “水果”就是指“可食用的多汁液的植物果实”这类现象。“可食用”、“多汁液”、“植物的果实”三个属性是归属到“水果”这个概念称谓的集合下不可或缺的要件。 水果亦暗藏杀机 有人错误的认为:水果营养成分高，多吃对人有好处。其实不然。比如，苹果含有糖分和钾盐，吃多了对心脏不利，冠心病、心肌梗塞、肾炎、糖尿病患者不宜多吃;柑橘性凉，肠胃不适，肾肺功能虚寒的老人不能多吃;梨子含糖较多，糖尿病人吃多了会引起血糖升高;柿子含有单宁、柿胶酚，胃肠不好或便秘患者应少吃，否则容易形成柿石;菠萝含有丰富的维生素A、B、C，以及柠檬酸、蛋白酶等，而且有消食止泻、降压利尿等功效。但是，有些特异体质的人吃了后会发生阵阵腹痛，甚至呕吐等不适应症，最好把削好的菠萝放在盐水中浸泡后再加热吃。] 水果为什么可以解酒 饮酒过量常为醉酒，醉酒多有先兆，语言渐多，舌头不灵，面颊发热发麻，头晕站立不稳„„都是醉酒的先兆，这时需要解酒。不少人知道，吃一些带酸味的水果或饮服1--2两干净的食醋可以解酒。什么道理呢, 这是因为，水果里含有机酸，例如，苹果里含有苹果酸，柑橘里含有柠檬酸，葡萄里含有酒石酸等，而酒里的主要成分是乙醇，有机酸能与乙醇相互作用而形成酯类物质从而达到解酒的目的。 同样道理，食醋也能解酒是因为食醋里含有3--5%的乙酸，乙酸能跟乙醇发生酯化反应生成乙酸乙酯。尽管带酸味的水果和食醋都能使过量乙醇的麻醉作用得以缓解，但由于上述酯化反应在体内进行时受到多种因素的干扰，效果并不十分理想。 反季水果少吃为妙 反季节水果原本是指在温室里利用高科技手段栽培出来的品种。反季节水果并不是靠使用激素才生长，主要是通过大棚设施、提高室温等手段改变生长环境，从而让植物的成熟季节提前。 但是，为了便于水果的贮藏和运输，果农把接近成熟的水果提前采摘下来，销售前再用乙烯将它们催熟。 我们知道，水果在自然成熟的过程中，香蕉、柿子、苹果、猕猴桃一类的呼吸跃变型水果本身就会释放出少量的乙烯来使果实成熟，但如果是用人工催熟的方法，所使用的乙烯必须是微量的，如果使用大量的乙烯把未熟的青果催熟，食用后不但对人体没有任何益处，反而会对人体产生有害影响。但是由于使用催熟剂的水果都可以提前上市卖个好价，所以导致市面上催熟的反季节水果在增多。 专家提醒大家，有些反季的水果少吃为妙。 1、葡萄:一些不法商贩和果农使用催熟剂——乙烯利。使用者把乙烯利用水按比例稀释professional engineer 1, each equipped with the professional technician 1, 2 technicians, carry out their duties. By the Resident Engineer of the conservation section chiefs and marketing grasp work and coordination. Six and lawn maintenance, planting is completed, often with a 1-2 lawn maintenance can grow into the fullness of the week. After the lawn grow, but also to carry out regular maintenance and management, to ensure the lawn landscape continues for a long time. Lawn maintenance management including: irrigation, fertilization, pruning, weeding and other links. 1, irrigate irrigation lawn fertility environments can be improved, adding water plant the lawn, is a guarantee of normal lawn. In view of the lawn during the growth season, lawn and the environment is in a State of flux, coordination of water and soil and improving the microclimate of the Center, water cannot be implemented according to a fixed pattern, following a number of technical points for reference. (1) the irrigation time growing season, according to the different periods of precipitation is extremely important and timely irrigation of different grass species. Can generally be divided into three periods: ? turned green before the rainy season. High temperatures during this period, transpiration, water requirements, and is one of the most crucial irrigation under soil water retention properties of strength and rainy periods during which Bush 2-4. ? largely ceased during the rainy season irrigation. Air humidity during this period, grass transpiration decreased soil moisture content has increased to a level sufficient to meet the needs of lawn growth. ? to yellowing of the leaf after this period before the rainy season precipitation, evaporation is greater, 后，将没有成熟的青葡萄放入稀释液中浸湿，过一两天青葡萄就变成紫葡萄。 2、香蕉:为了让香蕉表皮变得嫩黄好看，有的不法商贩用二氧化硫来催熟，但果肉吃上去仍是硬硬的，一点也不甜。二氧化硫对人体是有害的。 3、西瓜:超标准地使用催熟剂、膨大剂及剧毒农药，从而使西瓜带毒。这种西瓜皮上的条纹不均匀，切开后瓜瓤特别鲜艳，可瓜子却是白色的，吃完嘴里有异味。 4、草莓:中间有空心、形状不规则又硕大的草莓，一般是激素过量所致。草莓用了催熟剂或其他激素类药后生长期变短，颜色也新鲜了，但果味却变淡了。 西瓜 西瓜是夏季消暑良品，但是糖尿病患者和易胀气的人禁吃西瓜。西瓜和许多含糖量高的水果是在肠内而不是在胃里消化的。因此当西瓜与那些需要用唾液和胃进行消化的食品一起食用时，西瓜就会在胃中很快被分解，然后开始发酵并形成气体，使人感到胃胀不舒服。由于上述原因，西瓜应当与其他食品分开吃、空腹吃或者食用其他食品两个小时后再吃。 香蕉 畏寒体弱和胃虚的人不适宜于吃香蕉。因为香蕉在胃肠中消化得很慢，对胆囊不好。 葡萄 葡萄最好在摘下两天之后再食用，因为刚摘下的葡萄会在小肠中产生大量气体。葡萄皮的内膜上富有丰富的营养，但是皮和核还是不吃为妙，它们很难消化，也容易胀气。 橘子 橘子味甘酸，性凉。有理气润肺、醒酒止痢的功效。橘此可以化湿去痰、解毒止咳、治疗腰痛乳痈等症。但“阴常不足，阳常有余”的人应少吃，以免“上焦火盛。” 椰子 味甘，有益气杀虫的功效。椰子汁和果肉都可食用，成熟的椰果拿在手里轻摇时，会听到果汁的的撞击声。 苹果 苹果色泽美艳，芳香脆甜，中医认为苹果性平，有补心润肺、生津解毒、益气和胃、醒酒平肝的神效。但是由于果糖和果酸较多，对牙齿有较强的腐蚀作用，吃后最好及时漱口刷牙。 石榴 石榴果肉晶莹艳丽，甘酸生津。中医认为石榴性温涩，润燥兼收敛，主治咽喉燥渴，可止渴生津、涩肠止泻、固肾收敛。但吃多容易伤齿，生痰。 菠萝 味甘酸、性平，对肾炎水肿、高血压、支气管炎有疗效。但临床上发现有些人吃菠萝后会引起过敏，俗称“菠萝病”或“菠萝中毒”，在食用15分钟至1小时左右即出现腹痛、恶心、呕吐、腹泻，同时出现过敏症状，头疼、头昏、皮肤潮红、全身发紫、四肢及口舌发麻;professional engineer 1, each equipped with the professional technician 1, 2 technicians, carry out their duties. By the Resident Engineer of the conservation section chiefs and marketing grasp work and coordination. Six and lawn maintenance, planting is completed, often with a 1-2 lawn maintenance can grow into the fullness of the week. After the lawn grow, but also to carry out regular maintenance and management, to ensure the lawn landscape continues for a long time. Lawn maintenance management including: irrigation, fertilization, pruning, weeding and other links. 1, irrigate irrigation lawn fertility environments can be improved, adding water plant the lawn, is a guarantee of normal lawn. In view of the lawn during the growth season, lawn and the environment is in a State of flux, coordination of water and soil and improving the microclimate of the Center, water cannot be implemented according to a fixed pattern, following a number of technical points for reference. (1) the irrigation time growing season, according to the different periods of precipitation is extremely important and timely irrigation of different grass species. Can generally be divided into three periods: ? turned green before the rainy season. High temperatures during this period, transpiration, water requirements, and is one of the most crucial irrigation under soil water retention properties of strength and rainy periods during which Bush 2-4. ? largely ceased during the rainy season irrigation. Air humidity during this period, grass transpiration decreased soil moisture content has increased to a level sufficient to meet the needs of lawn growth. ? to yellowing of the leaf after this period before the rainy season precipitation, evaporation is greater, 严重的会突然晕倒，甚至会出现休克等症状，因此有菠萝过敏史者忌食。 荔枝 荔枝可补脑健身，通身益智。有诗云:“日啖荔枝三百颗，不辞长作岭南人。”其实不然，荔枝一次不能多吃，多吃可导致上火，引起体内糖代谢紊乱，造成“荔枝病”(即低血糖)。轻者恶心、出汗、口渴、无力，重则头晕、昏迷等。因此荔枝不能多吃，尤其是儿童不宜大量食用。 芒果 芒果果肉金黄甘美多汁，香气诱人，益胃止吐。果皮可治湿疹皮炎。但不要与辛辣之物同吃，多吃对人的肾脏有害。 柚子 柚子含类胰岛素、维生素、尼克酸、糖类、钙、铁、磷、脂类等。味甘酸、性寒。可下气、消炎、化食醒酒，有独特的降血糖功效，还可以美容长发。 李子 李子美味多汁，清肝热、活血脉，有美颜乌发的神效。李子多食生痰，损坏牙齿，体质虚弱的患者宜少食。根据前人经验，如李子味苦涩或放入水中漂浮者为有毒，不宜食之。 回答者: 娃娃_可可 | 四级 | 2007-3-13 21:00 桃子别名:寿桃、寿果。 性味:味甘酸，性温。 热量:36卡,100克(约1颗) 营养成分:蛋白质、糖类、膳食纤维、维生素B1、B2、C、磷、铁、钙、钾等。 功效:《大明本草》说桃为(肺之果，肺病亦食之)。中医认为桃性温，有益颜色、解劳热的功效，能生津、润肠、活血。桃仁入心、肝、肺、大肠，有破血去瘀、润燥滑肠的功效，能活血行血、清散瘀血、去痰润瘀肠，对于呼吸器官有镇静作用，可止咳、平喘。桃仁有去血管栓塞的作用，所以可用于血管栓塞引起的半身不遂。临床上常用于闭经不通、月经痛、血压过高、慢性阑尾炎和跌打伤引起的瘀血肿痛等症状。 选购:挑选外皮颜色分布均匀，无碰伤的。不要挑选顶已经呈现红色，但果蒂处还是绿色，若能稍带点黄色的话才是好的。 清洗:桃子通常是连皮一起食用，所以一定要冲洗干净，如果要把皮去掉也可以，但就失去了表皮的营养。 保存:桃子如果过度冷藏会有损美味，所以冷藏于冰箱约1,2个钟头即可，如果要长时间冷藏的话，要先用纸将桃子一个个的包好，再放入箱子中，避免桃子直接接触冷气。桃子如果过熟，甜味并不会增加，只会让果肉更软更烂而已，所以最好在买来3天内将它吃完。 禁忌:桃子食用过多容易燥热，还有桃子的纤维多，如果吃太多，食道致消化不良;此外孕妇不宜食用桃仁。 professional engineer 1, each equipped with the professional technician 1, 2 technicians, carry out their duties. By the Resident Engineer of the conservation section chiefs and marketing grasp work and coordination. Six and lawn maintenance, planting is completed, often with a 1-2 lawn maintenance can grow into the fullness of the week. After the lawn grow, but also to carry out regular maintenance and management, to ensure the lawn landscape continues for a long time. Lawn maintenance management including: irrigation, fertilization, pruning, weeding and other links. 1, irrigate irrigation lawn fertility environments can be improved, adding water plant the lawn, is a guarantee of normal lawn. In view of the lawn during the growth season, lawn and the environment is in a State of flux, coordination of water and soil and improving the microclimate of the Center, water cannot be implemented according to a fixed pattern, following a number of technical points for reference. (1) the irrigation time growing season, according to the different periods of precipitation is extremely important and timely irrigation of different grass species. Can generally be divided into three periods: ? turned green before the rainy season. High temperatures during this period, transpiration, water requirements, and is one of the most crucial irrigation under soil water retention properties of strength and rainy periods during which Bush 2-4. ? largely ceased during the rainy season irrigation. Air humidity during this period, grass transpiration decreased soil moisture content has increased to a level sufficient to meet the needs of lawn growth. ? to yellowing of the leaf after this period before the rainy season precipitation, evaporation is greater,