{"id":4819,"date":"2016-03-16T22:55:07","date_gmt":"2016-03-16T15:55:07","guid":{"rendered":"http:\/\/ttud.com.vn\/?p=4819"},"modified":"2017-10-02T13:36:12","modified_gmt":"2017-10-02T06:36:12","slug":"phat-hien-vi-khuan-an-nhua-giup-hinh-thanh-phuong-phap-tai-che-moi","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/phat-hien-vi-khuan-an-nhua-giup-hinh-thanh-phuong-phap-tai-che-moi\/","title":{"rendered":"Ph\u00e1t hi\u1ec7n vi khu\u1ea9n ‘\u0103n’ nh\u1ef1a gi\u00fap h\u00ecnh th\u00e0nh ph\u01b0\u01a1ng ph\u00e1p t\u00e1i ch\u1ebf m\u1edbi"},"content":{"rendered":"

Ph\u00e1t hi\u1ec7n n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1edfi c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u1ebfn t\u1eeb Nh\u1eadt B\u1ea3n, h\u1ecd cho r\u1eb1ng nh\u1eefng vi sinh v\u1eadt r\u1ea5t \u0111\u00e1ng ch\u00fa \u00fd do kh\u1ea3 n\u0103ng ph\u00e2n h\u1ee7y ho\u00e0n to\u00e0n m\u1ed9t lo\u1ea1i nh\u1ef1a ph\u1ed5 bi\u1ebfn g\u1ecdi l\u00e0 Polyethylene terephthalate ( PET). Qu\u00e1 tr\u00ecnh ti\u00eau h\u00f3a c\u1ee7a Ideonella sakaiensis di\u1ec5n ra kh\u00e1 ch\u1eadm, v\u00e0 nh\u1eefng t\u00e1c \u0111\u1ed9ng ng\u1eafn h\u1ea1n c\u1ee7a n\u00f3 v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c kh\u1eb3ng \u0111\u1ecbnh b\u1edfi c\u00e1c nh\u00e0 khoa h\u1ecdc. Tuy nhi\u00ean, nghi\u00ean c\u1ee9u lo\u1ea1i vi khu\u1ea9n n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ef1 ra \u0111\u1eddi c\u1ee7a nh\u1eefng c\u00e1ch th\u1ee9c m\u1edbi, an to\u00e0n h\u01a1n \u0111\u1ec3 lo\u1ea1i b\u1ecf r\u00e1c th\u1ea3i.<\/strong><\/p>\n

\"\"<\/p>\n

PET l\u00e0 lo\u1ea1i v\u1eadt li\u1ec7u b\u1ec1n, nh\u1eb9, v\u1edbi kh\u1ea3 n\u0103ng ch\u1ed1ng th\u1ea5m n\u01b0\u1edbc, th\u1ebf n\u00ean ho\u00e0n to\u00e0n d\u1ec5 hi\u1ec3u khi n\u00f3 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 l\u00e0m c\u00e1c th\u00f9ng ch\u1ee9a c\u0169ng nh\u01b0 chai l\u1ecd. Trong n\u0103m 2013, kho\u1ea3ng 56 tri\u1ec7u t\u1ea5n PET \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t, nh\u01b0ng ch\u1ec9 c\u00f3 kho\u1ea3ng \u00bd s\u1ed1 \u0111\u00f3 \u0111\u01b0\u1ee3c mang \u0111i t\u00e1i ch\u1ebf. \u0110\u1ed9 b\u1ec1n v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng n\u01b0\u1edbc – 2 \u0111\u1eb7c \u0111i\u1ec3m n\u00e0y khi\u1ebfn PET \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng b\u1edfi r\u1ea5t nhi\u1ec1u c\u00f4ng ty tr\u00ean th\u1ebf gi\u1edbi, nh\u01b0ng \u0111\u00f3 c\u0169ng l\u00e0 y\u1ebfu t\u1ed1 khi\u1ebfn n\u00f3 tr\u1edf n\u00ean nguy hi\u1ec3m cho m\u00f4i tr\u01b0\u1eddng. M\u1ea5t m\u1ed9t th\u1eddi gian d\u00e0i \u0111\u1ec3 ph\u00e2n h\u1ee7y lo\u1ea1i nh\u1ef1a n\u00e0y, v\u00e0 v\u00ec v\u1eady n\u00f3 th\u01b0\u1eddng k\u1ebft th\u00fac v\u00f2ng \u0111\u1eddi c\u1ee7a m\u00ecnh trong c\u00e1c b\u00e3i ch\u00f4n l\u1ea5p ho\u1eb7c c\u00e1c \u0111\u1ea1i d\u01b0\u01a1ng. Ng\u01b0\u1eddi cho r\u1eb1ng m\u1ea5t 450 n\u0103m \u0111\u1ec3 chai nh\u1ef1a ph\u00e2n h\u1ee7y, v\u00e0 m\u1eb7c d\u00f9 m\u1ed9t s\u1ed1 lo\u1ea1i nh\u1ef1a tr\u1ea3i qua qu\u00e1 tr\u00ecnh n\u00e0y nhanh h\u01a1n trong \u0111\u1ea1i d\u01b0\u01a1ng, \u00f4 nhi\u1ec5m nghi\u00eam tr\u1ecdng l\u00e0 h\u1ec7 l\u1ee5y kh\u00f4ng th\u1ec3 tr\u00e1nh kh\u1ecfi.<\/p>\n

deonella-sakaiensis_tinhte .<\/em>
\n Vi khu\u1ea9n Ideonella sakaiensis (tr\u00e1i) \u0111ang ph\u00e2n h\u1ee7y t\u1ea5m nh\u1ef1a PET v\u00e0 k\u1ebft qu\u1ea3 (ph\u1ea3i). \u1ea2nh: Wall Street Journal.\u200b<\/em><\/p>\n

Th\u1ebf nh\u01b0ng, vi khu\u1ea9n Ideonella sakaiensis c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3i quy\u1ebft nh\u1eefng v\u1ea5n \u0111\u1ec1 h\u00f3c b\u00faa n\u00f3i tr\u00ean. Ch\u00fang \u0111\u01b0\u1ee3c t\u00ecnh c\u1edd ph\u00e1t hi\u1ec7n sau khi c\u00e1c nh\u00e0 khoa h\u1ecdc ti\u1ebfn h\u00e0nh s\u00e0ng l\u1ecdc 250 m\u1eabu PET \u0111\u01b0\u1ee3c l\u1ea5y t\u1eeb c\u00e1c c\u01a1 s\u1edf t\u00e1i ch\u1ebf. Trong n\u1ed7 l\u1ef1c t\u00ecm ki\u1ebfm nh\u1eefng d\u1ea5u hi\u1ec7u c\u1ee7a s\u1ef1 suy tho\u00e1i trong c\u00e1c m\u1eabu thu \u0111\u01b0\u1ee3c, h\u1ecd t\u00ecm th\u1ea5y I.sakaiensis. Vi khu\u1ea9n s\u1eed d\u1ee5ng m\u1ed9t c\u1eb7p enzym (ch\u1ea5t x\u00fac t\u00e1c sinh h\u1ecdc \u0111\u01b0\u1ee3c d\u00f9ng b\u1edfi c\u00e1c \u0111\u1ed9ng v\u1eadt \u0111\u1ec3 ph\u00e2n hu\u1ef7 th\u1ee9c \u0103n) \u0111\u1ec3 bi\u1ebfn PET th\u00e0nh ngu\u1ed3n l\u01b0\u01a1ng th\u1ef1c c\u1ee7a ch\u00fang, m\u1eb7c d\u00f9 \u0111i\u1ec1u n\u00e0y x\u1ea3y ra v\u1edbi t\u1ed1c \u0111\u1ed9 r\u1ea5t ch\u1eadm. Theo k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u, vi khu\u1ea9n m\u1ea5t \u0111\u1ebfn 6 tu\u1ea7n \u0111\u1ec3 ph\u00e2n r\u00e3 ho\u00e0n to\u00e0n m\u1ed9t t\u1ea5m nh\u1ef1a PET c\u1ea5p th\u1ea5p. \u0110i\u1ec1u \u0111\u00f3 ngh\u0129a l\u00e0 vi\u1ec7c n\u00f3 \u2018ti\u00eau h\u00f3a\u2019 lo\u1ea1i v\u1eadt li\u1ec7u ch\u1ea5t l\u01b0\u1ee3ng cao \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong bao b\u00ec, s\u1ebd c\u00f2n l\u00e2u h\u01a1n r\u1ea5t nhi\u1ec1u.<\/p>\n

M\u1eb7c d\u00f9 v\u1eady, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u hy v\u1ecdng c\u00f3 th\u1ec3 d\u00f9ng c\u00e1c bi\u1ec7n ph\u00e1p nh\u00e2n t\u1ea1o nh\u1eb1m th\u00fac \u0111\u1ea9y t\u1ed1c \u0111\u1ed9 c\u1ee7a qu\u00e1 tr\u00ecnh ph\u00e2n h\u1ee7y. Trong m\u1ed9t b\u00e0i ph\u1ecfng v\u1ea5n v\u1edbi t\u1edd Wall Street Journal, gi\u00e1o s\u01b0 c\u00f4ng ngh\u1ec7 sinh h\u1ecdc Uwe Bornscheuer c\u0169ng cho bi\u1ebft v\u1ec1 m\u1eb7t l\u00fd thuy\u1ebft, ch\u00fang ta c\u00f3 th\u1ec3 cho lo\u1ea1i vi khu\u1ea9n v\u1eeba ph\u00e1t hi\u1ec7n v\u00e0o c\u00e1c b\u00e3i ch\u00f4n l\u1ea5p, nh\u1eb1m t\u0103ng t\u1ed1c s\u1ef1 ph\u00e2n h\u1ee7y ngay t\u1ea1i \u0111\u00e2y. \u201cT\u1ef7 l\u1ec7 ph\u00e2n r\u00e3 kh\u00e1 ch\u1eadm, nh\u01b0ng n\u00f3 v\u1eabn ho\u1ea1t \u0111\u1ed9ng\u201d, \u00f4ng n\u00f3i. \u201c\u0110i\u1ec1u n\u00e0y c\u1ea7n \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n b\u1edfi c\u00e1c nghi\u00ean c\u1ee9u s\u00e2u h\u01a1n\u201d.<\/p>\n

Ngu\u1ed3n: The Verge\u200b<\/em><\/p>\n

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

Ph\u00e1t hi\u1ec7n n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1edfi c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u1ebfn t\u1eeb Nh\u1eadt B\u1ea3n, h\u1ecd cho r\u1eb1ng nh\u1eefng vi sinh v\u1eadt r\u1ea5t \u0111\u00e1ng ch\u00fa \u00fd do kh\u1ea3 n\u0103ng ph\u00e2n h\u1ee7y ho\u00e0n to\u00e0n m\u1ed9t lo\u1ea1i nh\u1ef1a ph\u1ed5 bi\u1ebfn g\u1ecdi l\u00e0 Polyethylene terephthalate ( PET). Qu\u00e1 tr\u00ecnh ti\u00eau h\u00f3a c\u1ee7a Ideonella sakaiensis di\u1ec5n ra kh\u00e1 […]<\/p>\n","protected":false},"author":17,"featured_media":5379,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-4819","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\/4819","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=4819"}],"version-history":[{"count":2,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/4819\/revisions"}],"predecessor-version":[{"id":5381,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/4819\/revisions\/5381"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/5379"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=4819"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=4819"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=4819"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}