?

?


詼諧的語言，生動(dòng)的內(nèi)容一分鐘快速掌握科技最新動(dòng)態(tài)

?

本期節(jié)目音頻下載

Fungi Take a Bite out of BPA

Bisphenol A. Also called BPA, it's used to make shatter-proof plastic known as polycarbonate, found in everything from water bottles to medical devices to the lining of food packaging. As much as 2.7 million tons of plastics are manufactured each year with BPA. But it's also an endocrine disruptor posing a threat to fetuses and young children. And it’s been linked to cancer and metabolic disorders leading to obesity.

Bisphenol A.也叫BPA，是用來制造一種叫聚碳酸酯的防震塑料的。聚碳酸酯無處不在，從礦泉水瓶、醫(yī)療器械到食品包裝生產(chǎn)線都可以看到它的身影，我們每年要用BPA生產(chǎn)270萬噸塑料。但它也會(huì)對胎兒及幼童的內(nèi)分泌產(chǎn)生影響，還會(huì)導(dǎo)致癌癥和致糖尿病的代謝障礙。

So how can plastics be properly disposed of to avoid releasing BPA into the environment? Some fungus may help. So say researchers publishing in the journal Biomacromolecules. [Trishul Artham and Mukesh Doble, EfIw]

如何處理塑料才能防止不釋放BPA到環(huán)境中呢？有些真菌可以幫得上忙?！渡锔叻肿踊瘜W(xué)》上的一篇研究就是這么說的。

The scientists selected three fungi that are already used for environmental cleanup. They wanted to optimize conditions for the fungi to break down polycarbonate, so first they treated the plastic with ultraviolet light and heat. Untreated polycarbonate served as a control.

科學(xué)家們選擇了三種已用于清潔環(huán)境的真菌，他們想優(yōu)化真菌分解聚碳酸酯的條件，首先對塑料進(jìn)行紫外線處理和加熱處理，并將未經(jīng)處理的聚碳酸酯作為對照。

After 12 months, the untreated plastic hadn’t decomposed at all. But the fungi had munched through the treated plastic and used it all as an energy source. Even better, the BPA had been entirely broken down as well. Tests of the sample found no BPA residue. That’s good news in the effort to mop up a persistant pollutant.

一年后未經(jīng)處理的塑料完全沒有分解，而真菌吃處理后的塑料吃得津津有味，還把它作為能量來源，更妙的是BPA完全分解了——樣本測試沒有發(fā)現(xiàn)殘余的BPA。這對要費(fèi)力處理持續(xù)性污染物來說可是個(gè)不錯(cuò)的消息。

點(diǎn)擊進(jìn)入?yún)⑴c科學(xué)60秒>>>?

聲明：音視頻均來自互聯(lián)網(wǎng)鏈接，僅供學(xué)習(xí)使用。本網(wǎng)站自身不存儲(chǔ)、控制、修改被鏈接的內(nèi)容。"滬江英語"高度重視知識產(chǎn)權(quán)保護(hù)。當(dāng)如發(fā)現(xiàn)本網(wǎng)站發(fā)布的信息包含有侵犯其著作權(quán)的鏈接內(nèi)容時(shí)，請聯(lián)系我們，我們將依法采取措施移除相關(guān)內(nèi)容或屏蔽相關(guān)鏈接。

滬江網(wǎng)校夏季課程上線，足不出戶，和滬江網(wǎng)校一起天天向上，共同進(jìn)步吧！

2010年12月CET【四級暑期特訓(xùn)班】

2010年12月CET【六級暑期特訓(xùn)班】