菠菜含有大量的草酸,不仅有涩味而且会影响人体对钙的吸收,不过只要将河南开封县朱仙镇一带,妇女有带铜制首饰的习俗。因为普通家庭的女孩子,一般都买不起金银首饰,只得戴铜手镯、铜耳环、铜戒指、铜项链及铜项锁等。说也奇怪,这些 Spinach contains a lot of oxalic acid, not only astringency but also affect the body’s absorption of calcium, but as long as the town of Ka Sin, Kaifeng County, Henan Province, women have the custom with copper jewelry. Because ordinary girls, generally can not afford gold and silver jewelry, only to wear copper bracelets, copper earrings, copper rings, copper necklaces and copper lock. Strange to say, these