T\u1ea1i cu\u1ed9c thi C\u00f4ng ngh\u1ec7 ch\u1ebf bi\u1ebfn sau thu ho\u1ea1ch n\u0103m 2019 v\u1eeba t\u1ed5 ch\u1ee9c th\u00e1ng 4\/2019, sinh vi\u00ean B\u00f9i Th\u1ecb Kh\u00e1nh Linh, Tr\u01b0\u1eddng \u0110H Khoa h\u1ecdc T\u1ef1 nhi\u00ean, \u0110HQG-HCM \u0111\u00e3 gi\u00e0nh gi\u1ea3i nh\u1ea5t v\u1edbi nghi\u00ean c\u1ee9u \u201cChi\u1ebft xu\u1ea5t dung d\u1ecbch bi\u1ebfn t\u00ednh chitosan t\u1eeb v\u1ecf t\u00f4m, cua v\u1edbi d\u1ecbch chi\u1ebft polyphenols trong tr\u00e0 xanh thay th\u1ebf h\u00f3a ch\u1ea5t \u0111\u1ec3 b\u1ea3o qu\u1ea3n n\u00f4ng s\u1ea3n t\u01b0\u01a1i l\u00e2u\u201d. Theo k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u, dung d\u1ecbch t\u1eeb v\u1ecf t\u00f4m s\u1ebd gi\u1eef \u0111\u01b0\u1ee3c n\u00f4ng s\u1ea3n t\u01b0\u01a1i h\u01a1n 10 ng\u00e0y.\u00a0<\/p>\n
Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 cao trong b\u1ed1i c\u1ea3nh n\u00f4ng s\u1ea3n Vi\u1ec7t b\u1ecb th\u1ea5t tho\u00e1t nhi\u1ec1u sau thu ho\u1ea1ch v\u00e0 c\u00e1c ch\u1ea5t b\u1ea3o qu\u1ea3n h\u00f3a h\u1ecdc c\u00f3 nguy c\u01a1 \u1ea3nh h\u01b0\u1edfng s\u1ee9c kh\u1ecfe ng\u01b0\u1eddi ti\u00eau d\u00f9ng.<\/p>\n
T\u00e1c gi\u1ea3 \u0111\u00e3 t\u1ea1o dung d\u1ecbch b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng ch\u1ea5t kh\u1eed nh\u00f3m hydroxyl, amino v\u00e0 \u03b1 \u2013 methylene \u0111\u1ec3 t\u1ea1o g\u1ed1c t\u1ef1 do tr\u00ean m\u1ea1ch c\u1ea5u t\u1ea1o c\u1ee7a chitosan, r\u1ed3i g\u1eafn c\u00e1c polyphenols l\u00ean m\u1ea1ch chitosan. Thay v\u00ec nh\u00fang n\u00f4ng s\u1ea3n v\u00e0o dung d\u1ecbch b\u1ea3o qu\u1ea3n, t\u00e1c gi\u1ea3 \u0111\u00e3 d\u00f9ng ph\u01b0\u01a1ng ph\u00e1p phun \u00e1p su\u1ea5t k\u1ebft h\u1ee3p th\u1ed5i gi\u00f3 (phun s\u01b0\u01a1ng). C\u00e1ch n\u00e0y tr\u00e1nh \u0111\u01b0\u1ee3c \u00fang th\u1ed1i khi dung d\u1ecbch b\u1ea3o qu\u1ea3n d\u01b0 th\u1eeba b\u00e1m l\u1ea1i tr\u00ean n\u00f4ng s\u1ea3n.<\/p>\n
Khi phun, dung d\u1ecbch t\u1ea1o l\u1edbp m\u00e0ng m\u1ecfng b\u00e1m tr\u00ean b\u1ec1 m\u1eb7t v\u1ecf n\u00f4ng s\u1ea3n ng\u0103n s\u00e2u b\u1ecd, vi sinh, n\u1ea5m m\u1ed1c ph\u00e1t tri\u1ec3n v\u00e0 gi\u1ea3m \u0111\u01b0\u1ee3c qu\u00e1 tr\u00ecnh oxy h\u00f3a (gi\u00e0 h\u00f3a) do m\u00e0ng c\u00f3 kh\u1ea3 n\u0103ng tho\u00e1t kh\u00ed \u0111\u1ec3 n\u00f4ng s\u1ea3n c\u00f3 th\u1ec3 h\u00f4 h\u1ea5p.<\/p>\n
Theo \u0111\u00e1nh gi\u00e1 c\u1ee7a gi\u1edbi chuy\u00ean m\u00f4n, k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u n\u00e0y t\u1ea1o ti\u1ec1n \u0111\u1ec1 ph\u00e1t tri\u1ec3n chu\u1ed7i c\u00f4ng ngh\u1ec7 l\u01b0u gi\u1eef v\u00e0 gia t\u0103ng ch\u1ea5t l\u01b0\u1ee3ng n\u00f4ng s\u1ea3n Vi\u1ec7t Nam cung c\u1ea5p cho th\u1ecb tr\u01b0\u1eddng n\u1ed9i \u0111\u1ecba v\u00e0 xu\u1ea5t kh\u1ea9u.<\/p>\n<\/p>\n
Linh cho bi\u1ebft, trong t\u01b0\u01a1ng lai s\u1ebd so s\u00e1nh hi\u1ec7u qu\u1ea3 c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng bi\u1ebfn t\u00ednh chitosan v\u1edbi d\u1ecbch chi\u1ebft polyphenols t\u1eeb tr\u00e0 xanh v\u1edbi c\u00e1c lo\u1ea1i th\u1ef1c v\u1eadt kh\u00e1c \u0111\u1ec3 t\u00ecm ra ngu\u1ed3n nguy\u00ean li\u1ec7u polyphenols t\u1ed1t nh\u1ea5t cho b\u1ea3o qu\u1ea3n n\u00f4ng s\u1ea3n.<\/p>\n
(Ngu\u1ed3n: Phan Minh – B\u00e1o \u0111i\u1ec7n t\u1eed Vnexpress.net)<\/i><\/p>\n