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【奥斯汀生活】生活知识|不可不知的食物添加剂

8/30/2009

 
美国地广人多,食品常需要跨州配送,因此防腐剂(preservatives)和稳定剂(stabilizers)会用于效防止变质。此外,为了降低成本和提高产量,食品工业常用人工香料(artificial flavorings)、色素(colorings or food dyes)等替代天然成分,同时通过增稠剂(thickeners)、乳化剂(emulsifiers)等改善口感与外观,以满足消费者对标准化、口味一致的需求。为了健康,我们来看看这些常用的食物添加剂。

硫磺及亚硫酸盐 (sulfites)- 漂白剂和保鲜剂 硫酸盐 (sulfites) 是通常作为食物漂白剂和保鲜剂。亚硫酸盐会造成哮喘,过敏和失眠。亚硫酸盐 (sulfites) 是一大类含有亚硫酸离子的化合物,因此有不同的名字:
  1. 二氧化硫(Sulfur dioxide)
  2. 亞硫酸鉀或焦亞硫酸鉀 (Potassium bisulfite or potassium metabisu)
  3. 亞硫酸鈉、焦亞硫酸鈉或亞硫酸鈉(Sodium bisulfite, sodium metabisulfite or sodium sulfite)
FDA (美国食药管理局)禁止往新鲜的蔬菜水果里加亚硫酸盐。 但是,亚硫酸盐还是广泛地应用于其他食品。比如保存酒类特别是葡萄酒,葡萄酒醋 (balsamic vinegar),干果,干调味料,比如八角,花椒等常用的调味料, 干的,冷冻的海鲜海货, 比如 冷冻虾, 虾干,虾米, 咸鱼等,中药材和干货: 比如白木耳,黑木耳,香菇, 粉丝,腐竹等。因此,购买时要仔细看成分表(ingredients)。

谷氨酸钠(Sodium glutamate)-提味剂 谷氨酸钠就是通常所说的味精,加入味精是让食物如酱油等的味道变得更鲜美。酱油中的添加剂一般还有谷氨酸钠(Sodium glutamate),白砂糖,酵母提取物 (yeast extract),5'-呈味核苷酸二钠 (disodium 5'-flavored nucleotide),5'-肌苷酸二钠 (disodium 5'-inosinate),三氯蔗糖(sucralose),焦糖色(caramel color,),苯甲酸钠(sodium benzoate)。 ​白砂糖和三氯蔗糖都是甜味剂。焦糖色一般老抽里都会有就是着色剂。最后的苯甲酸钠是防腐剂,预防酱油在储存和使用的过程中腐败变质。

苯甲酸钠(sodium benzoate)-防腐剂 在谈到酱油的添加剂时,我们已经讨论了苯甲酸钠的成分,苯甲酸钠还广泛的应用在其他的食物中。

人造色素 (Artificial Colors)-着色剂 人造色素 (Artificial Colors, especially the yellow and red color)和我们刚才提到的焦糖色都是着色剂。

​玉米糖浆 (Corn Syrup)-甜味剂 玉米糖浆 (Corn Syrup),异麦芽寡糖(IMOs , Isomalto-oligosaccharides (IMOs),甚至仅仅是添加糖分,都是对身体有害的。

​​激素类添加剂 植细胞雌激素(Phytoestrogens,DDT与早期的初潮有关. (二氯二苯基三氯乙烷(dichlorodiphenyltrichloroethane, DDT)、二恶英 (dioxin)、多氯联苯(polychlorinated biphenyls, PCB)、双酚A(bisphenol A, BPA)、多溴联苯(polybrominated biphenyls, PBB)、邻苯二甲酸酯 (phthalate esters)、硫丹 (endosulfan)、阿特拉津和泽罗醇 (atrazine and zeranol)

其他人工添加剂 卡拉胶(Carrageenan),菊粉 (Inulin), 硝酸钠和亚硝酸钠 (Sodium nitrates and sodium nitrites), BHA (butylated hydroxyanisole) and BHT (butylated hydroxytoluene) , Diacetyl (二乙酰) , Propylparaben (丙基对羟基苯甲酸酯) , Potassium bromate (溴酸钾)

这么多词汇记不住怎么办?简单的办法就是挑选成分简单的食物。
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