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鸡蛋的这几种吃法不补充营养更危害健康
发布时间：2011-02-28      来源：

    生鸡蛋的蛋白质结构致密，有很大部分不能被人体吸收，只有煮熟后的蛋白质才变得松软，人体胃肠道才可消化吸收。生鸡蛋有特殊的腥味，会引起中枢神经抑制，使唾液、胃液和肠液等消化液的分泌减少，从而导致食欲不振、消化不良。

    中国的老百姓将鸡蛋视为补品，经常食用鸡蛋可增强记忆力，还可保护心脏和动脉血管、预防癌症、延缓衰老。可如果不能加工和食用，补品就会变为“废品”，甚至是“毒品”，所以应当认真掌握鸡蛋里的学问，防患于未然…

    1.忌吃未熟鸡蛋

    鸡蛋蛋白含有抗生物素蛋白，会影响食物中生物素的吸收，使身体出现食欲不振、全身无力、肌肉疼痛、皮肤发炎、脱眉等症状。鸡蛋中含有抗胰蛋白酶，它们影响人体对鸡蛋蛋白质的消化和吸收。未熟的鸡蛋中这两种物质没有被分解，因此影响蛋白质的消化、吸收。鸡蛋在形成过程中会带菌，未熟的鸡蛋不能将细菌杀死，容易引起腹泻。因此鸡蛋要经高温后再吃，不要吃未熟的鸡蛋!

    生鸡蛋的蛋白质结构致密，有很大部分不能被人体吸收，只有煮熟后的蛋白质才变得松软，人体胃肠道才可消化吸收。生鸡蛋有特殊的腥味，会引起中枢神经抑制，使唾液、胃液和肠液等消化液的分泌减少，从而导致食欲不振、消化不良。

    2.忌吃煮老的鸡蛋

    鸡蛋煮得时间过长，蛋黄表面会形成灰绿色硫化亚铁层，很难被人体吸收。蛋白质老化会变硬变韧，影响食欲，也不易吸收。

    3.鸡蛋不宜与糖同煮

    鸡蛋与糖同煮会因高温作用生成一种叫糖基赖氨酸的物质，破坏了鸡蛋中对人体有益的氨基酸成分，而且这种物质有凝血作用，进入人体后会造成危害。如需在煮鸡蛋中加糖，应该等稍凉后放入搅拌，味道不减。

    4.炒鸡蛋不需放味精

    鸡蛋中含有氯化钠和大量的谷氨酸，这两种成分加热后生成谷氨酸钠，有纯正的鲜味。味精的主要成分也是谷氨酸钠，炒鸡蛋时如果放入味精，会影响鸡蛋本身合成谷氨酸钠，破坏鸡蛋的鲜味。

    5.煮熟的鸡蛋用冷水浸后忌存放

    一些人常将煮熟的鸡蛋浸在冷水里，利用蛋壳和蛋白的热膨胀系数不同，使蛋壳容易剥落，但这种做法不卫生。因为新鲜鸡蛋外表有一层保护膜，使蛋内水分不易挥发，并防止微生物侵入，鸡蛋煮熟后壳上膜被破坏，蛋内气腔的一些气体逸出，此时鸡蛋置于冷水内会使气腔内温度骤降并呈负压，冷水和微生物可通过蛋壳和壳内双层膜上的气孔进入蛋内，贮藏时容易腐败变质。

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