首页 > VOA慢速英语 > 农业报道 > 【农业报道】专家对减少细菌繁殖的建议 Expert advice on reducing bacterial reproduction

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【农业报道】专家对减少细菌繁殖的建议 Expert advice on reducing bacterial reproduction

来源:慢速英语   时间:2020-01-11 16:05:16

American researchers say farmers should wait one day after a rain storm or watering their fields to harvest fresh fruits and vegetables.They say gathering the crops at least 24 hours after rainfall increases food safety.They say it also may be enough

to protect those eating from fresh produce from food borne illnesses.


美国研究人员说,农民应该在暴风雨后等待一天,或者浇水收割新鲜的水果和蔬菜。他们说,在降雨后至少24小时收集农作物可以提高食品安全。他们说,这也可能足以保护那些吃新鲜农产品的人免受食源性疾病的影响。


Listeria is a food borne bacteria.It grows best in wet conditions.Poisoning with Listeria monocytogenes can cause muscle pain.The person can also feel sick to the stomach and even experience diarrhea–the uncontrolled expulsion of wastes from the body.


李斯特菌是一种食源性细菌。它在潮湿的环境中生长最好。单核细胞增生李斯特菌中毒可引起肌肉疼痛。病人也会感到胃部不适,甚至会出现腹泻——不受控制地将废物排出体外。


Listeria can be a serious health threat for pregnant women and older adults.It can also threaten people with weak immune systems,like those with HIV,the virus responsible for the disease AIDS.


李斯特菌可能对孕妇和老年人的健康构成严重威胁。它也会威胁到免疫系统弱的人,比如艾滋病病毒携带者。

The bacterium is everywhere in the environment,but usually grows in water.So,crops that are harvested shortly after they have been watered are likely to contain unsafe levels of disease-causing Listeria.


这种细菌在环境中无处不在,但通常生长在水中。因此,在浇水后不久收获的作物可能含有不安全的致病李斯特菌水平。


Martin Wiedmann teaches food safety at Cornell University in New York State.He and other researchers are urging farmers to wait 24 hours after a rainfall or watering fields before they harvest crops.By waiting,he says,a field has enough time to dry out.


马丁·维德曼在纽约州康奈尔大学教授食品安全。他和其他研究人员敦促农民在降雨或浇水后24小时再收割庄稼。通过等待,他说,一块地有足够的时间干涸。


"You're more likely to find Listeria for a very short time.After one day,it drops back more or less to the baseline normal level that we find(in the environment).So,we found this effect in water,but it's very short-lived.Within a day,you are back to normal."


“你很可能在很短的时间内发现李斯特菌。一天后,它会或多或少地回落到我们(在环境中)发现的基线正常水平。所以,我们在水中发现了这种效应,但它非常短暂。一天之内,你就恢复了正常。”


The findings were reported in the journal Applied and Environmental Microbiology.


这一发现发表在《应用与环境微生物学》杂志上。


In crops like spinach,Listeria levels were 25 times greater when harvested immediately after the plants were watered.


在像菠菜这样的作物中,李斯特菌的含量是浇水后立即收获时的25倍。


Martin Wiedmann says the bacterium can also be found in sandwich meat,especially when the meat is not kept to minus-four or minus-five degrees Celsius.He says there are a number of other settings where unsafe levels of Listeria can hide.


Martin Wiedmann说,这种细菌也可以在三明治肉中发现,特别是当肉没有保持在零下4或零下5摄氏度时。他说还有很多其他的设置可以隐藏不安全的李斯特菌水平。


"And so it's important to have the tools in place to control this organism everywhere from primary production,to food processing plants to retail,to helping consumers make smart decisions on what foods to eat and how to cook food."


因此,从初级生产到食品加工厂再到零售业,都必须准备好控制这种微生物的工具,帮助消费者在吃什么和如何烹调食物的问题上做出明智的决定


Martin Wiedmann notes that Listeria poisoning is less common in developing countries.In such areas,he adds,foods generally are not left in iceboxes or refrigeration equipment,another source of bacterial overgrowth.


Martin Wiedmann指出,李斯特菌中毒在发展中国家并不常见。他补充说,在这些地区,食品通常不会留在冰箱或冷藏设备中,这是细菌过度生长的另一个来源。


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