New way of cooking rice removes arsenic and retains mineral nutrients, study shows by University of Sheffield Credit: University of Sheffield Cooking rice in a certain way removes over 50 percent of the naturally occurring arsenic in brown rice, and 74 percent in white rice, according to new research. 全文 https://phys.org/news/2020-11-cooking-rice-arsenic-retains-mineral.html
New way of cooking rice removes arsenic and retains mineral nutrients, study shows by University of Sheffield Credit: University of Sheffield Cooking rice in a certain way removes over 50 percent of the naturally occurring arsenic in brown rice, and 74 percent in white rice, according to new research. 全文 https://phys.org/news/2020-11-cooking-rice-arsenic-retains-mineral.html fangnu 发表于 2020-11-03 14:15
为啥要去掉？ "Arsenic is LIKELY SAFE when eaten in normal food amounts. The form of arsenic found naturally in foods (organic arsenic) does not seem to cause any harm.at a level of 50 mcg/L has been linked to reduced scores on intelligence tests in children. Also, arsenic trioxide (Trisenox) is LIKELY SAFE when given intravenously (by IV) to adults by a healthcare provider. It is an FDA-approved prescription drug."
找到一篇關於美國人砷攝入的文章，時間比較早，給大家做參考。 標題：Dietary arsenic intakes in the United States: FDA total diet study, September 1991-December 1996 Abstract：The FDA has conducted the Total Dietary Study (TDS), a yearly market basket programme, since 1961. It is designed to monitor the levels of toxic chemical contaminants (pesticide residues, industrial and elemental contaminants) and essential nutrients in the US food supply. It also provides information on trends in dietary concentrations and exposures for the general population. Foods are collected from retail stores once a year from each of four geographic areas of the US and are analysed either after preparation/cooking or as ready-to-eat. The latest TDS (1991-1997) data show that arsenic (inorganic and organic, greater than or equal to 0.03 ppm) was found in 63 (24%) of the 261-264 foods/mixed dishes analysed The highest concentration was found in seafood, followed by rice/rice cereal, mushrooms, and poultry. Based on the United States Department of Agriculture's 1987-1988 Nationwide Food Consumption Survey, the estimated daily total arsenic average intakes, in mu g/day, are: 2 for infants, 23 for toddlers, 20 for 6-year-old children, 13 for 10-year-old children, 15 for 14-16-year-old boys, 21 for 14-16-year-old girls, 57 for 25-30-year-old men, 28 for 25-30-year-old women, 47 for 40-45-year-old men, 37 for 40-45-year-old women, 92 for 60-65-year-old men, 72 for 60-65-year-old women, 69 for 70-year-old men, and 42 for 70-year-old women. Of the estimated total arsenic intakes for infants, 42% arise from seafood and 31% from rice/rice cereals. Of the estimated total arsenic intakes, seafood contributes 76-90% for children (2-10-year olds), 79-85% for 14-16-year olds, and 89-96% for adults (greater than or equal to 25-30-year olds); rice/rice cereals contributes 4-8% for children, 8% for 14-16-year olds, and 1-4% for adults (greater than or equal to 25-30-year olds).
另一篇也貼這裏。不記得以前讀過有關推薦吃哪裏大米的文章 標題：Survey of total arsenic and arsenic speciation in US-produced rice as a reference point for evaluating change and future trends Abstract：Rice generally contains higher levels of arsenic than most terrestrial-based foods. Studies related to dietary intake of arsenic from rice must take into account arsenic speciation due to toxicity differences in arsenic species. In this study, microwave-assisted extraction with trifluoroacetic acid was used to prepare rice samples for arsenic speciation analysis by high-performance liquid chromatography-inductively coupled plasma mass spectrometry. Fifty-three samples collected directly from the fields in four major rice-producing states in 1980 and 1981 were analysed for total and speciated arsenic and the results were compared with each other and with results for several more recently collected samples from local markets. The average content of total arsenic was 210 +/- 190 ng As g(-1). This study demonstrates that US rice samples with higher levels of total arsenic have higher levels of dimethylarsinic acid; however, inorganic arsenic levels, regardless of the total arsenic content, rarely exceed 150 ng As g(-1) dry weight. These data are consistent with more recent findings, thus establishing trends that arsenic content in US-grown rice has been relatively constant throughout the last 30 years. To the authors' knowledge, the presented data are unique in that they provide a historical reference point for arsenic distribution in US-produced rice. These data would be invaluable for several applications including long-term arsenic exposure studies, environmental clean-up assessments, and to establish models for future trends in arsenic contribution in total diet studies.
全文 https://phys.org/news/2020-11-cooking-rice-arsenic-retains-mineral.html
我也是水洗洗，刚看到这个，感觉好麻烦
我也是。紫薯紫薯。
这是常识吗？从我奶奶辈就没见过人这样做。
为啥要去掉？
"Arsenic is LIKELY SAFE when eaten in normal food amounts. The form of arsenic found naturally in foods (organic arsenic) does not seem to cause any harm.at a level of 50 mcg/L has been linked to reduced scores on intelligence tests in children. Also, arsenic trioxide (Trisenox) is LIKELY SAFE when given intravenously (by IV) to adults by a healthcare provider. It is an FDA-approved prescription drug."
我老公说他小时候大院食堂是做捞饭，先煮一下，米汤给大家喝，算好东西呢。米捞出来上甑子蒸熟。不煮一下不容易蒸熟，一直煮，不好控制。这样的米饭就没有直接煮或蒸熟的香，就为了省事。
+1 米汤算好东西
我的意思就是说最好吃的最香的被倒掉了，这米饭吃着还有啥意思，味同嚼蜡。
哈哈哈哈~同意~
这是哪国的常识?
闻所未闻
小时候很喜欢吃食堂饭 只听大人说是蒸的，
你的常识是你家自产的常识吗?
说米含砷还是近年的话题, 在中国几千年都相信米汤更有营养. 中国人民才吃上饱饭几年? 谁家会将米饭煮开了, 将米汤倒掉, 重新加水再煮?
这是常识？从来就没听说过更没做过，每天就自来水洗两遍
我老公也这样，认为煮开了自然就消毒了，奶奶的，土再怎么煮也是土呀。
这是早稻米吧？......
美国的米袋上不都写着免洗吗？
还不如不吃
中国的没有砷的问题吧。
哇！居然有和我一样的！不过我是先用自来水淘一遍，再用过滤水过一遍，最后加纯净水烧
精华都在米油里，以前穷人家的妈妈没奶水的话，就是喂月娃娃米汤米油的。
哇碰到業内的了！激動！
麻烦说一下买哪个牌子的什么品种的美国大米好？ 红国宝还是黄国宝还是日本圆米？
我现在一直吃中国的北大荒牌子的东北优质大米，红色包装袋的5KG那种，沃尔玛买的，孩子说就那种好吃，米不破，一粒一粒的特别劲道。
德州產的大米平均砷含量在美國本土產的米中是最高的，可以盡量避開。
有，大陸產的大米也含砷，來源不是因爲曾經種棉花的含砷農藥殘留，而是工業污染。在大陸，大米中的砷污染和鎘污染被研究的挺廣泛，計量化學熱門話題之一。
N California 的米没事吧？
我在加拿大，选择余地小
哪个地方含量低？
是大米都會含砷，或多或少。原因之一：水稻是一種很好的土壤清潔作物，吸收土壤中的物質遠超過平均值，比如三價的無機砷化合物和五價的無機砷化合物。NC的數據不記得了，好久前做的科研、看的文章。
一般人平時的大米進食量遠遠小於砷（無機砷化合物）的致死量
所以，请给几个大米出产地安全的地区
谢谢科普，这么说我以后得多做面食了。
谢谢，已收藏，抽空拜读这2篇文章。
加州的比起来是比较低的。
具体哪些地方的米不能买？
说说牌子吧 一般的米上面也没标具体产地啊
在加拿大买的大米袋子上有说明哪个国家的哪个公司的哪片地区的产品，我看了一下我买的糯米和日本圆米是北加州地区的农场，疫情前抢的。
这是农村做法，因为米汤要用来喂猪