{"id":4288,"date":"2015-10-26T13:46:53","date_gmt":"2015-10-26T06:46:53","guid":{"rendered":"http:\/\/ttud.com.vn\/?p=4288"},"modified":"2017-09-28T23:14:51","modified_gmt":"2017-09-28T16:14:51","slug":"nghien-cuu-cai-thien-huong-vi-ca-chua-luu-kho","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/nghien-cuu-cai-thien-huong-vi-ca-chua-luu-kho\/","title":{"rendered":"Nghi\u00ean c\u1ee9u c\u1ea3i thi\u1ec7n h\u01b0\u01a1ng v\u1ecb c\u00e0 chua l\u01b0u kho"},"content":{"rendered":"

Theo c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u, b\u1ed5 sung th\u00eam ho\u1eb7c s\u1eafp x\u1ebfp l\u1ea1i m\u1ed9t v\u00e0i b\u01b0\u1edbc \u0111\u01a1n gi\u1ea3n trong ch\u1ebf bi\u1ebfn th\u01b0\u01a1ng m\u1ea1i c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 h\u01b0\u01a1ng v\u1ecb c\u1ee7a c\u00e0 chua – lo\u1ea1i qu\u1ea3 ph\u1ed5 bi\u1ebfn \u0111\u01b0\u1ee3c b\u00e1n t\u1ea1i c\u00e1c c\u1eeda h\u00e0ng t\u1ea1p h\u00f3a.<\/strong>
\nC\u00e1c nh\u00e0 khoa h\u1ecdc s\u1ebd tr\u00ecnh b\u00e0y nghi\u00ean c\u1ee9u m\u1edbi v\u1ec1 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p b\u1ea3o l\u01b0u h\u01b0\u01a1ng v\u1ecb t\u1ea1i H\u1ed9i ngh\u1ecb v\u00e0 tri\u1ec3n l\u00e3m qu\u1ed1c gia l\u1ea7n th\u1ee9 250 c\u1ee7a Hi\u1ec7p h\u1ed9i H\u00f3a h\u1ecdc M\u1ef9 (ACS).<\/p>\n

“L\u00fd t\u01b0\u1edfng nh\u1ea5t l\u00e0 c\u00e0 chua n\u00ean \u0111\u01b0\u1ee3c h\u00e1i khi ch\u00edn v\u00e0 sau \u0111\u00f3 b\u00e1n ngay l\u1eadp t\u1ee9c”, Ti\u1ebfn s\u0129 Jinhe Bai cho bi\u1ebft. Nh\u01b0ng \u0111i\u1ec1u n\u00e0y kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c \u0111\u1ed1i v\u1edbi nh\u1eefng qu\u1ea3 c\u00e0 chua b\u00e1n ra th\u1ecb tr\u01b0\u1eddng, ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef v\u00e0 sau \u0111\u00f3 \u0111\u01b0\u1ee3c v\u1eadn chuy\u1ec3n qua m\u1ed9t ch\u1eb7ng \u0111\u01b0\u1eddng d\u00e0i.<\/p>\n

\u0110\u1ec3 ng\u0103n ch\u1eb7n c\u00e0 chua tr\u1edf n\u00ean qu\u00e1 ch\u00edn tr\u01b0\u1edbc khi ch\u00fang \u0111\u1ebfn c\u00e1c c\u1eeda h\u00e0ng, ng\u01b0\u1eddi tr\u1ed3ng th\u01b0\u1eddng h\u00e1i ch\u00fang khi c\u00f2n xanh. C\u00e1c nh\u00e0 \u0111\u00f3ng g\u00f3i sau \u0111\u00f3 s\u1eed d\u1ee5ng m\u1ed9t ch\u1ea5t kh\u00ed g\u1ecdi l\u00e0 ethylene \u0111\u1ec3 k\u00edch ho\u1ea1t qu\u00e1 tr\u00ecnh ch\u00edn c\u1ee7a qu\u1ea3, v\u00e0 sau \u0111\u00f3 c\u00e0 chua \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef v\u00e0 v\u1eadn chuy\u1ec3n \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p.<\/p>\n

V\u1ea5n \u0111\u1ec1 l\u00e0 l\u00e0m l\u1ea1nh c\u00e0 chua s\u1ebd l\u00e0m gi\u1ea3m h\u01b0\u01a1ng v\u1ecb c\u1ee7a ch\u00fang, Bai n\u00f3i. Trong m\u1ed9t n\u1ed7 l\u1ef1c \u0111\u1ec3 c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng h\u01b0\u01a1ng v\u1ecb, nh\u00f3m c\u1ee7a \u00f4ng \u0111\u00e3 ph\u00e1t tri\u1ec3n m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p h\u01a1i kh\u00e1c.<\/p>\n

M\u00f4 t\u1ea3 qu\u00e1 tr\u00ecnh n\u00e0y m\u1ed9t c\u00e1ch chi ti\u1ebft h\u01a1n, Bai gi\u1ea3i th\u00edch r\u1eb1ng \u00f4ng v\u00e0 c\u00e1c \u0111\u1ed3ng nghi\u1ec7p t\u1ea1i C\u01a1 quan Nghi\u00ean c\u1ee9u n\u00f4ng nghi\u1ec7p, B\u1ed9 N\u00f4ng nghi\u1ec7p M\u1ef9 v\u00e0 tr\u01b0\u1eddng \u0110\u1ea1i h\u1ecdc Florida \u0111\u00e3 nh\u00fang c\u00e0 chua xanh tr\u1ed3ng \u1edf Florida v\u00e0o n\u01b0\u1edbc n\u00f3ng (kho\u1ea3ng 125 \u0111\u1ed9 F) trong n\u0103m ph\u00fat v\u00e0 sau \u0111\u00f3 \u0111\u1eb7t ch\u00fang \u1edf ch\u1ed7 m\u00e1t trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng. Ti\u1ebfp theo, h\u1ecd l\u00e0m l\u1ea1nh qu\u1ea3 c\u00e0 chua \u1edf m\u1ee9c nhi\u1ec7t gi\u1eefa 41 v\u00e0 55 \u0111\u1ed9 Fahrenheit, nhi\u1ec7t \u0111\u1ed9 m\u00e0 c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t th\u01b0\u01a1ng m\u1ea1i s\u1eed d\u1ee5ng \u0111\u1ec3 v\u1eadn chuy\u1ec3n. Sau khi c\u00e0 chua ch\u00edn ho\u00e0n to\u00e0n, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 ki\u1ec3m tra h\u01b0\u01a1ng v\u1ecb v\u00e0 m\u00f9i th\u01a1m c\u1ee7a ch\u00fang.<\/p>\n

H\u1ecd ph\u00e1t hi\u1ec7n ra r\u1eb1ng, c\u00e0 chua \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng n\u01b0\u1edbc n\u00f3ng tr\u01b0\u1edbc khi l\u00e0m l\u1ea1nh c\u00f3 c\u00e1c h\u1ee3p ch\u1ea5t h\u01b0\u01a1ng v\u1ecb (6-methyl-5-hepten 2-one, 2-methylbutanal v\u00e0 2-phenylethanol) cao h\u01a1n nh\u1eefng qu\u1ea3 kh\u00f4ng \u0111\u01b0\u1ee3c x\u1eed l\u00fd n\u00f3ng v\u00e0 c\u00f3 v\u1ecb ngon h\u01a1n, Bai n\u00f3i. “L\u00e0m l\u1ea1nh \u1ee9c ch\u1ebf s\u1ea3n xu\u1ea5t oxy, nit\u01a1 v\u00e0 c\u00e1c h\u1ee3p ch\u1ea5t d\u1ecb v\u00f2ng c\u00f3 ch\u1ee9a l\u01b0u hu\u1ef3nh, xeton, r\u01b0\u1ee3u v\u00e0 c\u00e1c aldehyde, trong \u0111\u00f3 c\u00f3 13 th\u00e0nh ph\u1ea7n m\u00f9i th\u01a1m quan tr\u1ecdng trong h\u01b0\u01a1ng v\u1ecb c\u00e0 chua. Nh\u01b0ng x\u1eed l\u00fd b\u1eb1ng n\u01b0\u1edbc n\u00f3ng th\u1ef1c s\u1ef1 \u0111\u00e3 t\u1ea1o ra n\u1ed3ng \u0111\u1ed9 c\u1ee7a c\u00e1c nh\u00e2n t\u1ed1 m\u00f9i h\u01b0\u01a1ng quan tr\u1ecdng cao h\u01a1n, ngay c\u1ea3 v\u1edbi l\u00e0m l\u1ea1nh sau \u0111\u00f3”.<\/p>\n

Hi\u1ec7n nay, h\u1ecd \u0111ang theo d\u00f5i c\u00e1c h\u1ee3p ch\u1ea5t h\u01b0\u01a1ng v\u1ecb \u1edf c\u00e1c th\u1eddi \u0111i\u1ec3m kh\u00e1c – khi nh\u1eefng qu\u1ea3 c\u00e0 chua c\u00f3 m\u00e0u xanh, ngay sau khi qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n v\u00e0 khi ch\u00fang ch\u00edn t\u1eebng ph\u1ea7n. Th\u00f4ng tin n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p v\u1edbi d\u1eef li\u1ec7u tr\u00ean c\u00e0 chua \u0111\u00e3 ch\u00edn ho\u00e0n to\u00e0n \u0111\u1ec3 gi\u00fap nh\u00f3m nghi\u00ean c\u1ee9u ph\u00e1t tri\u1ec3n m\u1ed9t quy tr\u00ecnh th\u01b0\u01a1ng m\u1ea1i t\u1ed1t h\u01a1n.<\/p>\n

Bai n\u00f3i r\u1eb1ng, c\u00e1ch ti\u1ebfp c\u1eadn c\u1ee7a nh\u00f3m nghi\u00ean c\u1ee9u l\u00e0 m\u1ed9t s\u1eeda \u0111\u1ed5i d\u1ec5 d\u00e0ng, kh\u00f4ng t\u1ed1n k\u00e9m cho v\u1ea5n \u0111\u1ec1 v\u1ec1 h\u01b0\u01a1ng v\u1ecb. Nhi\u1ec1u k\u1ef9 thu\u1eadt sau thu ho\u1ea1ch \u0111\u00e3 t\u1eeb b\u1ecf h\u01b0\u01a1ng v\u1ecb \u0111\u1ec3 ph\u00f2ng ng\u1eeba v\u1ebft th\u00e2m ho\u1eb7c th\u1ed1i qu\u1ea3, \u00f4ng cho bi\u1ebft. “Ph\u01b0\u01a1ng ph\u00e1p c\u1ee7a ch\u00fang t\u00f4i c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n trong h\u1ec7 th\u1ed1ng th\u01b0\u01a1ng m\u1ea1i hi\u1ec7n nay m\u00e0 kh\u00f4ng s\u1ee3 b\u1ecb th\u1ed1i qu\u1ea3”, \u00f4ng gi\u1ea3i th\u00edch.<\/p>\n

H\u1ecd c\u0169ng \u0111\u00e3 th\u1eed c\u00e1c ph\u01b0\u01a1ng ph\u00e1p thay th\u1ebf cho n\u01b0\u1edbc n\u00f3ng, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e0 chua xanh \u1ee7 v\u1edbi methyl salicylate, c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 d\u1ea7u wintergreen, m\u1ed9t ch\u1ea5t x\u00f4ng h\u01a1i kh\u00e1ng n\u1ea5m \u0111\u01b0\u1ee3c C\u1ee5c Qu\u1ea3n l\u00fd Th\u1ef1c ph\u1ea9m v\u00e0 D\u01b0\u1ee3c ph\u1ea9m Hoa K\u1ef3 “c\u00f4ng nh\u1eadn l\u00e0 an to\u00e0n”.<\/p>\n

\u00d4ng cho bi\u1ebft r\u1eb1ng \u00f4ng v\u00e0 c\u00e1c \u0111\u1ed3ng nghi\u1ec7p c\u0169ng \u0111\u00e3 th\u00e0nh c\u00f4ng trong b\u1ea3o qu\u1ea3n h\u01b0\u01a1ng v\u1ecb v\u1edbi ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c. V\u1edbi quy tr\u00ecnh n\u00e0y, h\u1ecd ch\u1ecdn nh\u1eefng qu\u1ea3 c\u00e0 chua \u1edf giai \u0111o\u1ea1n mu\u1ed9n h\u01a1n ng\u01b0\u1eddi tr\u1ed3ng th\u01b0\u1eddng l\u00e0m. Thay v\u00ec ch\u1ecdn ch\u00fang khi ch\u00fang c\u00f2n m\u00e0u xanh, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 \u0111\u1ee3i v\u00e0 h\u00e1i ch\u00fang khi qu\u1ea3 n\u1eeda xanh n\u1eeda h\u1ed3ng. Sau \u0111\u00f3, h\u1ecd x\u1eed l\u00fd ch\u00fang b\u1eb1ng 1-methylcyclopropene (m\u1ed9t lo\u1ea1i kh\u00ed \u0111\u01b0\u1ee3c C\u01a1 quan B\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng ch\u1ea5p thu\u1eadn). H\u1ecd th\u1ef1c hi\u1ec7n \u0111i\u1ec1u n\u00e0y \u0111\u1ec3 l\u00e0m cho qu\u1ea3 c\u00f3 th\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c c\u00e1c t\u1ebf b\u00e0o ch\u1ebft v\u00e0 thi\u1ec7t h\u1ea1i \u1edf nhi\u1ec7t \u0111\u1ed9 l\u01b0u tr\u1eef cao h\u01a1n. V\u00ec v\u1eady, c\u00e1c b\u01b0\u1edbc l\u00e0m l\u1ea1nh \u0111\u00e3 tr\u00e1nh \u0111\u01b0\u1ee3c thi\u1ec7t h\u1ea1i \u0111\u00f3 v\u00e0 h\u01b0\u01a1ng v\u1ecb \u0111\u01b0\u1ee3c duy tr\u00ec. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u d\u1ef1 t\u00ednh s\u1ebd so s\u00e1nh k\u1ef9 ch\u1ea5t l\u01b0\u1ee3ng b\u1ea3o to\u00e0n h\u01b0\u01a1ng v\u1ecb c\u1ee7a t\u1ea5t c\u1ea3 c\u00e1c k\u1ef9 thu\u1eadt.<\/p>\n

Khi c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c m\u1ed9t ph\u00e1p t\u1ed1t h\u01a1n trong s\u1ed1 \u0111\u00f3, h\u1ecd s\u1ebd ti\u1ebfp c\u1eadn c\u00e1c c\u00f4ng ty ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh xem c\u00e1c c\u00f4ng ty \u0111\u00f3 c\u00f3 quan t\u00e2m t\u1edbi vi\u1ec7c \u00e1p d\u1ee5ng k\u1ef9 thu\u1eadt n\u00e0y hay kh\u00f4ng, Bai n\u00f3i.<\/p>\n

MARD<\/em>
\n Eurekalert<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Theo c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u, b\u1ed5 sung th\u00eam ho\u1eb7c s\u1eafp x\u1ebfp l\u1ea1i m\u1ed9t v\u00e0i b\u01b0\u1edbc \u0111\u01a1n gi\u1ea3n trong ch\u1ebf bi\u1ebfn th\u01b0\u01a1ng m\u1ea1i c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 h\u01b0\u01a1ng v\u1ecb c\u1ee7a c\u00e0 chua – lo\u1ea1i qu\u1ea3 ph\u1ed5 bi\u1ebfn \u0111\u01b0\u1ee3c b\u00e1n t\u1ea1i c\u00e1c c\u1eeda h\u00e0ng t\u1ea1p h\u00f3a. C\u00e1c nh\u00e0 khoa h\u1ecdc s\u1ebd tr\u00ecnh b\u00e0y nghi\u00ean c\u1ee9u […]<\/p>\n","protected":false},"author":17,"featured_media":4445,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-4288","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\/4288","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=4288"}],"version-history":[{"count":2,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/4288\/revisions"}],"predecessor-version":[{"id":4444,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/4288\/revisions\/4444"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/4445"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=4288"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=4288"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=4288"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}