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食鹽的選購和保存

雖然食鹽是每餐必不可少的調(diào)味品,但科學(xué)用鹽,合理地選購和保存鹽,也是非常重要的,需要注意以下幾個(gè)方面:

(1)食用鹽產(chǎn)品感官應(yīng)為白色、味咸、無異味,無明顯的與鹽無關(guān)的外來異物。顆粒均勻,干燥流動(dòng)性好。購買時(shí)注意觀看外包裝袋上的各種標(biāo)志,要規(guī)范、齊全,碘鹽應(yīng)貼存防偽碘鹽標(biāo)志。

優(yōu)質(zhì)食鹽色澤潔白,有光澤,呈透明或半透明狀;氣味、滋味具有正常純正的咸味,無苦澀味,無異味;晶粒形態(tài)整齊,堅(jiān)硬光滑,不結(jié)塊,無返鹵吸潮現(xiàn)象,無雜質(zhì)。

劣質(zhì)食鹽色澤灰暗,呈黃褐色,透明性低;氣味、滋味有苦澀味,有異味;形態(tài)為晶體顆粒,不均勻,有結(jié)塊,有反鹵吸潮現(xiàn)象,有雜質(zhì)。

(2)成年人每人每天食鹽量不宜超過2300毫克,高血壓者不宜超過1500毫克。對(duì)甲狀腺功能亢進(jìn)患者,甲狀腺炎癥患者等人不宜食用碘鹽。

(3)碘鹽受熱、光和風(fēng)等影響,容易氧化分解而使碘失效,故碘鹽應(yīng)存放在加蓋的有色密封容器內(nèi)。碘鹽遇高溫會(huì)分解成單質(zhì)碘而揮發(fā)掉,故炒菜時(shí)不要用鹽“爆鍋”,避免高溫爆炒,應(yīng)等菜八成熟后才放入鹽,這樣可減少碘的損失。
來源:名希特產(chǎn)網(wǎng) 關(guān)注:
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