{"id":5741,"date":"2017-04-26T18:09:13","date_gmt":"2017-04-26T11:09:13","guid":{"rendered":"http:\/\/ttud.com.vn\/?p=5741"},"modified":"2017-10-03T11:44:28","modified_gmt":"2017-10-03T04:44:28","slug":"loai-sau-co-the-an-hang-ty-kilogram-rac-thai-nhua","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/loai-sau-co-the-an-hang-ty-kilogram-rac-thai-nhua\/","title":{"rendered":"Lo\u00e0i s\u00e2u c\u00f3 th\u1ec3 \u0103n h\u00e0ng t\u1ef7 kilogram r\u00e1c th\u1ea3i nh\u1ef1a"},"content":{"rendered":"

C\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 ph\u00e1t hi\u1ec7n ra m\u1ed9t lo\u1ea1i s\u00e2u b\u01b0\u1edbm c\u00f3 kh\u1ea3 n\u0103ng ph\u00e2n h\u1ee7y sinh h\u1ecdc polyethylene \u2013 m\u1ed9t trong nh\u1eefng lo\u1ea1i nh\u1ef1a c\u1ee9ng nh\u1ea5t v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t.<\/strong><\/p>\n

\"\"<\/p>\n

M\u1ed9t con s\u00e2u s\u00e1p \u0111ang \u0103n chi\u1ebfc t\u00fai b\u1eb1ng nh\u1ef1a. \u1ea2nh minh h\u1ecda<\/em><\/p>\n

Federica Bertocchini, nh\u00e0 khoa h\u1ecdc \u1edf \u0110\u1ea1i h\u1ecdc Cantabria, T\u00e2y Ban Nha, ki\u00eam ng\u01b0\u1eddi nu\u00f4i ong nghi\u1ec7p d\u01b0, ph\u00e1t hi\u1ec7n kh\u1ea3 n\u0103ng \u0103n r\u00e1c th\u1ea3i nh\u1ef1a \u0111\u00e1ng kinh ng\u1ea1c c\u1ee7a s\u00e2u s\u00e1p khi \u0111ang ch\u0103m s\u00f3c t\u1ed5 ong. Nh\u1eefng con s\u00e2u s\u00e1p \u0111\u01b0\u1ee3c d\u00f9ng l\u00e0m m\u1ed3i cho c\u00e1 nh\u01b0ng ch\u00fang c\u0169ng l\u00e0 lo\u00e0i g\u00e2y h\u1ea1i \u1edf t\u1ed5 ong, th\u01b0\u1eddng nhai th\u1ee7ng t\u1ed5 ong b\u1eb1ng s\u00e1p. Bertocchini b\u1ecf nh\u1eefng con s\u00e2u v\u00e0o t\u00fai nh\u1ef1a si\u00eau th\u1ecb l\u00e0m t\u1eeb polyethylene khi nh\u1eb7t ch\u00fang ra t\u1eeb t\u1ed5 ong. Ch\u01b0a \u0111\u1ea7y m\u1ed9t ti\u1ebfng sau, chi\u1ebfc t\u00fai b\u1ecb th\u1ee7ng l\u1ed7 ch\u1ed7, theo International Business Times.<\/p>\n

Bertocchini mang nh\u1eefng con s\u00e2u v\u00e0o ph\u00f2ng th\u00ed nghi\u1ec7m \u0111\u1ec3 nghi\u00ean c\u1ee9u ho\u1ea1t \u0111\u1ed9ng c\u1ee7a ch\u00fang trong t\u00fai. K\u1ebft h\u1ee3p v\u1edbi c\u00e1c nh\u00e0 khoa h\u1ecdc \u1edf \u0110\u1ea1i h\u1ecdc Cambridge, Anh, b\u00e0 ph\u00e1t hi\u1ec7n s\u00e2u s\u00e1p kh\u00f4ng ch\u1ec9 c\u1eafn th\u1ee7ng t\u00fai nylon m\u00e0 ch\u00fang th\u1ef1c s\u1ef1 \u0111ang \u0103n nh\u1ef1a v\u00e0 ph\u00e2n h\u1ee7y nh\u1ef1a th\u00e0nh m\u1ed9t h\u1ee3p ch\u1ea5t kh\u00e1c.<\/p>\n

100 con s\u00e2u nhai h\u1ebft 92 mg nh\u1ef1a trong kho\u1ea3ng 12 gi\u1edd, khi\u1ebfn chi\u1ebfc t\u00fai si\u00eau nh\u1eb9 ch\u1ec9 c\u00f2n l\u1ea1i nh\u1eefng m\u1ea3nh v\u1ee5n. Ch\u00fang ph\u00e2n t\u00e1ch nh\u1ef1a th\u00e0nh ethylene glycol, m\u1ed9t ch\u1ea5t ch\u1ed1ng \u0111\u00f4ng. Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 h\u00f4m qua tr\u00ean t\u1ea1p ch\u00ed Current Biology.<\/p>\n

“C\u00f3 m\u1ed9t s\u1ef1 bi\u1ebfn \u0111\u1ed5i h\u00f3a h\u1ecdc \u1edf polymer. \u0110i\u1ec1u n\u00e0y cho ch\u00fang t\u00f4i bi\u1ebft \u0111\u00e2y kh\u00f4ng \u0111\u01a1n thu\u1ea7n l\u00e0 h\u00e0nh vi nhai m\u00e1y m\u00f3c c\u1ee7a s\u00e2u s\u00e1p”, nh\u00e0 nghi\u00ean c\u1ee9u Paolo Bombelli \u1edf \u0110\u1ea1i h\u1ecdc Cambridge, \u0111\u1ed3ng t\u00e1c gi\u1ea3 nghi\u00ean c\u1ee9u, cho bi\u1ebft.<\/p>\n

S\u00e2u s\u00e1p l\u00e0 lo\u00e0i c\u00f4n tr\u00f9ng duy nh\u1ea5t \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn c\u00f3 kh\u1ea3 n\u0103ng ph\u00e2n h\u1ee7y polyethylene theo c\u00e1ch n\u00e0y. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u ch\u01b0a r\u00f5 c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng ch\u00ednh x\u00e1c c\u1ee7a s\u00e2u s\u00e1p. \u0110\u00f3 c\u00f3 th\u1ec3 l\u00e0 b\u1ea3n th\u00e2n con s\u00e2u s\u00e1p ho\u1eb7c vi khu\u1ea9n s\u1ed1ng trong ru\u1ed9t c\u1ee7a n\u00f3 ph\u00e2n h\u1ee7y nh\u1ef1a. Nh\u00f3m nghi\u00ean c\u1ee9u c\u0169ng nghi\u1ec1n nh\u1eefng con s\u00e2u v\u00e0 tr\u1ea3i ch\u1ea5t nh\u1eddn l\u00ean t\u00fai nh\u1ef1a \u0111\u1ec3 xem n\u00f3 c\u00f2n kh\u1ea3 n\u0103ng ph\u00e2n h\u1ee7y nh\u1ef1a th\u00e0nh h\u1ee3p ch\u1ea5t ch\u1ed1ng \u0111\u00f4ng hay kh\u00f4ng. K\u1ebft qu\u1ea3 l\u00e0 ch\u1ea5t nh\u1ea7y s\u00e2u v\u1eabn c\u00f3 t\u00e1c d\u1ee5ng nh\u01b0ng kh\u00f4ng hi\u1ec7u qu\u1ea3 nh\u01b0 s\u00e2u s\u1ed1ng.<\/p>\n

“Ch\u00fang t\u00f4i r\u1ea5t ph\u1ea5n kh\u00edch khi th\u1ea5y ch\u1ea5t nh\u1ea7y v\u1eabn c\u00f3 th\u1ec3 ph\u00e2n h\u1ee7y nh\u1ef1a”, Bombelli n\u00f3i. “\u0110i\u1ec1u n\u00e0y cho ch\u00fang t\u00f4i bi\u1ebft c\u00f3 th\u1ec3 t\u1ed3n t\u1ea1i ho\u1ea1t \u0111\u1ed9ng enzyme chia nh\u1ecf polyethylene. \u0110\u00e2y l\u00e0 m\u1ed9t ph\u00e1t hi\u1ec7n tuy\u1ec7t v\u1eddi b\u1edfi ch\u00fang t\u00f4i th\u1ef1c s\u1ef1 hy v\u1ecdng x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c lo\u1ea1i enzyme \u0111\u00f3. N\u1ebfu l\u00e0m \u0111\u01b0\u1ee3c, sau \u0111\u00f3 ch\u00fang t\u00f4i c\u00f3 th\u1ec3 chi\u1ebft xu\u1ea5t enzyme \u1edf nh\u1eefng t\u1ed5 ch\u1ee9c sinh v\u1eadt kh\u00e1c nh\u01b0 men hay vi khu\u1ea9n E. coli, v\u00e0 s\u1eed d\u1ee5ng ch\u00fang \u1edf quy m\u00f4 c\u00f4ng nghi\u1ec7p”.<\/p>\n

Men hay vi khu\u1ea9n c\u00f3 th\u1ec3 hi\u1ec7u qu\u1ea3 h\u01a1n s\u00e2u trong vi\u1ec7c ph\u00e2n h\u1ee7y nh\u1ef1a \u1edf quy m\u00f4 l\u1edbn, nh\u01b0ng s\u00e2u c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. Tuy nhi\u00ean, ethylene glycol r\u1ea5t \u0111\u1ed9c h\u1ea1i \u0111\u1ed1i v\u1edbi nhi\u1ec1u lo\u00e0i bao g\u1ed3m con ng\u01b0\u1eddi, do \u0111\u00f3 th\u1ea3 s\u00e2u s\u00e1p \u1edf b\u00e3i r\u00e1c kh\u00f4ng ph\u1ea3i gi\u1ea3i ph\u00e1p t\u1ed1t. Nh\u01b0ng nh\u1eefng con s\u00e2u s\u00e1p v\u1eabn c\u00f3 v\u1ebb kh\u1ecfe m\u1ea1nh sau khi \u0103n t\u00fai nh\u1ef1a v\u00e0 c\u00f3 th\u1ec3 h\u00f3a th\u00e2n th\u00e0nh s\u00e1p.<\/p>\n

Nh\u00f3m nghi\u00ean c\u1ee9u c\u1ea7n ti\u1ebfn h\u00e0nh th\u00eam v\u00e0i b\u01b0\u1edbc tr\u01b0\u1edbc khi d\u00f9ng s\u00e2u s\u00e1p \u0111\u1ec3 x\u1eed l\u00fd h\u00e0ng n\u00fai r\u00e1c th\u1ea3i nh\u1ef1a \u1edf c\u00e1c b\u00e3i r\u00e1c m\u1ed7i n\u0103m. “M\u1ed9t trong nh\u1eefng c\u00e2u h\u1ecfi ch\u00ednh ch\u00fang t\u00f4i \u0111ang c\u1ed1 g\u1eafng l\u00fd gi\u1ea3i l\u00e0 li\u1ec7u nh\u1ef1a \u0111\u01b0\u1ee3c ph\u00e2n h\u1ee7y b\u1edfi b\u1ea3n th\u00e2n s\u00e2u s\u00e1p, vi khu\u1ea9n trong ru\u1ed9t s\u00e2u hay nh\u1edd s\u1ef1 k\u1ebft h\u1ee3p c\u1ee7a c\u1ea3 hai”, Bombelli chia s\u1ebb.
\nM\u1ed9t t\u1ef7 t\u1ef7 chi\u1ebfc t\u00fai nylon \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng m\u1ed7i n\u0103m. Polyethylene chi\u1ebfm kho\u1ea3ng 92% trong t\u1ea5t c\u1ea3 t\u00fai nh\u1ef1a \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t. M\u1ed9t t\u1ed5 ch\u1ee9c sinh v\u1eadt c\u00f3 th\u1ec3 ph\u00e2n h\u1ee7y h\u1ee3p ch\u1ea5t n\u00e0y m\u00e0 kh\u00f4ng ch\u1ecbu \u1ea3nh h\u01b0\u1edfng mang \u0111\u1ebfn ti\u1ec1m n\u0103ng c\u00e1ch m\u1ea1ng h\u00f3a ng\u00e0nh x\u1eed l\u00fd r\u00e1c. Hi\u1ec7n t\u1ea1i, h\u00e0ng t\u1ef7 kilogram nh\u1ef1a \u0111\u1ed5 xu\u1ed1ng \u0111\u1ea1i d\u01b0\u01a1ng, t\u00edch t\u1ee5 ch\u1ea5t \u0111\u1ed9c trong nh\u1eefng \u0111\u1ed9ng v\u1eadt hoang d\u00e3 v\u00f4 t\u00ecnh \u0103n ph\u1ea3i r\u00e1c.<\/p>\n

Ph\u01b0\u01a1ng Hoa<\/em><\/p>\n

Ngu\u1ed3n VnExpress<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

C\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 ph\u00e1t hi\u1ec7n ra m\u1ed9t lo\u1ea1i s\u00e2u b\u01b0\u1edbm c\u00f3 kh\u1ea3 n\u0103ng ph\u00e2n h\u1ee7y sinh h\u1ecdc polyethylene \u2013 m\u1ed9t trong nh\u1eefng lo\u1ea1i nh\u1ef1a c\u1ee9ng nh\u1ea5t v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn nh\u1ea5t. M\u1ed9t con s\u00e2u s\u00e1p \u0111ang \u0103n chi\u1ebfc t\u00fai b\u1eb1ng nh\u1ef1a. \u1ea2nh minh h\u1ecda Federica Bertocchini, nh\u00e0 khoa h\u1ecdc \u1edf \u0110\u1ea1i […]<\/p>\n","protected":false},"author":17,"featured_media":6682,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-5741","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/5741","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=5741"}],"version-history":[{"count":3,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/5741\/revisions"}],"predecessor-version":[{"id":6683,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/5741\/revisions\/6683"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/6682"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=5741"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=5741"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=5741"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}