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,中药/食品检测员 2019-10-20回答
《决定》的出台适应了当前加快解决我国食品安全领域存在的突出问题的实际需要,顺应社会各方的呼声。
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,中药/食品检测员 2019-10-20回答
糖,通常是指具有甜味的单糖和寡糖。糖的主要功能是提供热能。每克葡萄糖在人体内氧化产生4千卡能量,人体所需要的70%左右的能量由糖提供。此外,糖还是构成组织和保护肝脏功能的重要物质。只要适量摄入,掌握好吃糖最佳时机,对人体是有益的。运动时,要消耗热能,糖比其他食物能更快提供热能;疲劳饥饿时,食糖可迅速被吸收提高血糖;当头晕恶心时,吃些糖可升血糖稳定情绪,有利恢复正常;饭后进食点糖食品,可使人在学习和工作时,精神振奋,精力充沛。
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,中药/食品检测员 2019-10-20回答
Organic Foods: Not More Nutritious?Study Says Organic Foods No More Nutritious, but Others DisagreeBy Kathleen DohenyWebMD Health ...
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Organic Foods: Not More Nutritious?Study Says Organic Foods No More Nutritious, but Others DisagreeBy Kathleen DohenyWebMD Health NewsReviewed by Brunilda Nazario, MDJuly 30, 2009 -- Organically grown food is no more nutritious than conventionally grown food when it comes to the amount of certain important nutrients, according to a new review of published studies."We wanted to answer the question, 'Is there any evidence that organic food is nutritionally superior to conventionally grown food?'" says the study's lead author, Alan D. Dangour, PhD, a public health nutritionist at the London School of Hygiene & Tropical Medicine. "The answer is no. Organic food is not nutritionally superior to conventional food."The conclusions of the review, published in the American Journal of Clinical Nutrition, drew strong disagreement from U.S.-based food researchers.The global market for organic foods is estimated to be about $48 billion annually, according to the London researchers. Organic foods are produced under standards that control the use of chemicals in crop production and medicine in animal production, among other regulations.Organic vs. Conventional Foods: ReviewDangour and his colleagues searched for studies comparing organic and conventionally grown food from January 1958 to February 2008.They found 55 studies of satisfactory quality to include in their review and evaluated several nutrient categories, including: ? Nitrogen? Vitamin C? Phenolic compounds (also called polyphenols)? Magnesium? Calcium? Phosphorous? Potassium? Zinc? Total soluble solids? Copper? Acidity contentThey found that conventionally produced crops had a higher content of nitrogen, while organically produced crops had higher phosphorous and acidity content. No difference was detected for the other crop nutrient categories analyzed. When they looked only at animal-source foods, the researchers found no difference in nutrient content.The review, funded by the U.K. Food Standards Agency, didn't look at differences in pesticide residues between the two growing methods.Organic vs. Conventional: Other ViewsOfficials from the U.S. organic food industry, not surprisingly, took strong exception to the review, as did some other experts.''Our stand is it's beyond scientific doubt that that organic foods are higher in vitamins and important trace minerals and there are far fewer toxic residues in them," says Ronnie Cummins, national director of the Organ Consumers' Association. "And that's the reason that millions of American consumers are paying a premium price for organic production."One problem with the new review is the use of older studies, some done in 1958, says Michael Hansen, PhD, a senior scientist at Consumers Union and a food safety expert. "Newer studies have clearly shown significant differences between organic and nonorganic when it comes to nutrient content," he tells WebMD.''Most of the studies published before 1980 are flawed for a number of reasons,'' he says, including flawed methodology.Nutrients as a whole in the food supply are declining, Hansen says, citing another reason not to lump 1958 studies with more current ones.But Dangour responds that criticism is off base, as the comparisons of organic versus conventionally grown food were done within individual studies. And, he says, "the majority of studies [reviewed] were published since 2000."Charles Benbrook, PhD, chief scientist for The Organic Center, a Boulder-based industry group, says his center's research has produced different conclusions. "The more contemporary studies and higher quality ones do clearly support nutritional benefit for organically grown foods compared to conventionally grown foods," he says.He criticizes what he calls a lack of focus on polyphenols and antioxidants, which he says are about 25% higher in organically grown foods. The London team "downplays" the differences they did find between the foods, he says.
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,中药/食品检测员 2019-10-19回答
喜欢吃花生油,很香,但现在吃得少了,价格贵,小时自家种花生,再榨成油,挺香的。
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,中药/食品检测员 2019-10-19回答
我们没有使用毛细管电泳
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,中药/食品检测员 2019-10-19回答
不需要只需要烘箱? 就可以了
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,中药/食品检测员 2019-10-19回答
现在小孩吃的钙剂有什么要求?
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,中药/食品检测员 2019-10-19回答
少年不养生,老来养医生,有道理的。工作不是全部,生活和身体才是
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,中药/食品检测员 2019-10-19回答
最爱喝可乐,味道很好
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,中药/食品检测员 2019-10-19回答
造假水平足以乱真,看不出来是假的,还有筋在上面呢。
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,中药/食品检测员 2019-10-19回答
食物类很少买,保质问题,安全性都难得保障。
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,中药/食品检测员 2019-10-19回答
这个问题不好说
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,中药/食品检测员 2019-10-19回答
如果是泡有药材在酒内的,的确放的时间要久一些。
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,中药/食品检测员 2019-10-19回答
现在必须要看,虽然有点不大可信,看看心理安慰下
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,中药/食品检测员 2019-10-19回答
吃不起的东西咯,
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,中药/食品检测员 2019-10-19回答
表面积对结果影响很大,倍数关系,到一定倍数后,不增大。
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,中药/食品检测员 2019-10-18回答
一般是到医院查过敏原
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,中药/食品检测员 2019-10-18回答
这个标准做醋样品可以吗?需要注意些什么?
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,中药/食品检测员 2019-10-18回答
可惜现在不少食品的生产日期是假的。
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,中药/食品检测员 2019-10-18回答
终于收到结果了,满意
 
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职业:衍生控股集团(深圳)有限公司 - 中药/食品检测员
学校:南京农业大学 - 生物科学与生物技术
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