不吃綠葉菜防曬不科學
tianqibiannuan,ziwaixianqiangduyuelaiyuegao,cishifangshaibeibushaomeinvmentidaolehufuzhongzuiweizhongyaodeyihuan。ertidaofangshai,chulefangshaipindexuanzewai,shaochisuoweide“感光蔬菜”也是不少人津津樂道的話題,並且有很多女士在身體力行。
不bu少shao人ren認ren為wei,芹qin菜cai等deng綠lv葉ye蔬shu菜cai含han有you葉ye綠lv素su,它ta是shi一yi類lei光guang敏min物wu質zhi,能neng吸xi收shou光guang能neng促cu進jin很hen多duo化hua學xue反fan應ying的de發fa生sheng,包bao括kuo氧yang化hua反fan應ying。所suo以yi,吃chi綠lv葉ye菜cai之zhi後hou曬shai太tai陽yang,可ke能neng會hui促cu進jin皮pi膚fu老lao化hua長chang斑ban,因yin此ci也ye會hui讓rang人ren越yue吃chi越yue黑hei。於yu是shi,很hen多duo女nv士shi都dou堅jian守shou一yi個ge原yuan則ze,那na就jiu是shi早zao上shang和he中zhong午wu不bu能neng吃chi青qing菜cai,一yi定ding要yao到dao晚wan上shang才cai能neng吃chi,原yuan因yin就jiu是shi害hai怕pa吃chi了le青qing菜cai之zhi後hou曬shai太tai陽yang會hui引yin起qi皮pi膚fu的de麻ma煩fan。
事實並非如此。研究表明,葉綠素的吸收率很低,攝入之後95%以上從大腸被排出體外。因此,它根本沒有可能大量進入人體。少量進入人體的葉綠素主要分布在肝髒、淋巴結和脾髒當中,皮膚當中雖然也有,但數量甚少。
實驗發現,即便給人吃每天300毫克的葉綠素(這個數量遠遠超過日常吃青菜的攝入量),血液裏的葉綠素濃度也不過是0.002毫克/毫升,而皮下脂肪中的葉綠素含量更是少得可憐。因此,如果午餐吃了葉綠素,它並不會立刻被吸收。因為食物在胃裏會停留4-6gexiaoshi。jinruxiaochangzhihou,cainengkaolvdaoxishoudewenti,ershiwuzaixiaochangdetingliushijianyoushijigexiaoshizhiduo,dengdaoyelvsubeichongfenxishoudeshihou,yijingwanquanbuyongdanxinfangshaidewentile,yinweicishitaiyangyiranxiashan。zhuanjiabiaoshi,weilefangshaierbuchilvyeshucaijianzhishirangrenmenzaifangqiyizhongjihaodeshiwu。yinwei,yelvsuyoujianqingtiweidezuoyong,haishifeichanghaodejieduwuzhi,youshidayouxiwangdekangaiwuzhi,baokuopifuai。中國糧油儀器網 http://www.98fo.cn/



