C\u00f3 r\u1ea5t nhi\u1ec1u qu\u1ea3 c\u1ee7a th\u1ef1c v\u1eadt tr\u01b0\u1edbc khi ch\u00edn v\u00e0 sau khi ch\u00edn x\u1ea3y ra nh\u1eefng thay \u0111\u1ed5i nh\u01b0 tr\u00f2 di\u1ec5n \u1ea3o thu\u1eadt, tr\u01b0\u1edbc khi ch\u00edn c\u1ee9ng, xanh chua, ch\u00e1t, sau khi ch\u00edn sang m\u1ec1m, \u0111\u1ecf, ng\u1ecdt v\u00e0 th\u01a1m. T\u1ea1i sao v\u1eady?<\/p>\n\n\n\n
Th\u1ef1c ra, \u0111\u1ed9 c\u1ee9ng c\u1ee7a qu\u1ea3 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c quy\u1ebft \u0111\u1ecbnh b\u1edfi s\u1ee9c k\u1ebft h\u1ee3p gi\u1eefa c\u00e1c t\u1ebf b\u00e0o. Nh\u01b0ng s\u1ee9c k\u1ebft h\u1ee3p n\u00e0y l\u1ea1i ch\u1ecbu s\u1ef1 \u1ea3nh h\u01b0\u1edfng c\u1ee7a nh\u1ef1a qu\u1ea3. Trong th\u1eddi gian qu\u1ea3 ch\u01b0a ch\u00edn, nh\u1ef1a c\u00e2y kh\u00f4ng tan v\u00e0o n\u01b0\u1edbc, c\u00e1c t\u1ebf b\u00e0o th\u1ecbt qu\u1ea3 l\u1ea1i d\u00ednh ch\u1eb7t, v\u00ec v\u1eady qu\u1ea3 h\u01a1i c\u1ee9ng. C\u00f9ng v\u1edbi qu\u1ea3 d\u1ea7n d\u1ea7n ch\u00edn, ho\u1ea1t t\u00ednh men keo qu\u1ea3 trong th\u1ecbt qu\u1ea3 t\u0103ng, nh\u1ef1a qu\u1ea3 c\u0169 b\u1ecb chuy\u1ec3n h\u00f3a th\u00e0nh nh\u1ef1a qu\u1ea3 c\u00f3 th\u1ec3 tan trong n\u01b0\u1edbc, \u0111\u1ed3ng th\u1eddi ch\u1ea5t canxi trong th\u1ecbt qu\u1ea3 c\u0169ng b\u1ecb ph\u00e2n gi\u1ea3i, nh\u01b0 v\u1eady, s\u1ee9c d\u00ednh c\u1ee7a c\u00e1c t\u1ebf b\u00e0o y\u1ebfu \u0111i, gi\u1eefa c\u00e1c t\u1ebf b\u00e0o ph\u00e2n chia, cho n\u00ean qu\u1ea3 ch\u00edn \u0103n s\u1ebd c\u1ea3m th\u1ea5y m\u1ec1m x\u1ed1p. M\u00e0 l\u00fac n\u00e0y, n\u1ebfu gi\u1eefa c\u00e1c t\u1ebf b\u00e0o th\u1ecbt qu\u1ea3 v\u1eabn c\u00f2n gi\u1eef s\u1ee9c k\u1ebft d\u00ednh nh\u1ea5t \u0111\u1ecbnh, th\u00ec \u0111\u1ed9 c\u1ee9ng c\u1ee7a qu\u1ea3 li\u1ec1n t\u0103ng l\u00ean t\u01b0\u01a1ng \u1ee9ng, \u0103n v\u00e0o c\u00f3 c\u1ea3m gi\u00e1c r\u00f2n, ngon.<\/p>\n\n\n\n
Qu\u1ea3 tr\u01b0\u1edbc khi ch\u00edn th\u01b0\u1eddng c\u00f3 m\u00e0u l\u1ee5c, t\u1ee9c l\u00e0 m\u00e0u xanh m\u00e0 ch\u00fang ta hay n\u00f3i. Nh\u01b0ng l\u00fac ch\u00edn, l\u1ea1i chuy\u1ec3n th\u00e0nh m\u00e0u v\u00e0ng, m\u00e0u \u0111\u1ecf hay m\u00e0u da cam. C\u00e1c b\u1ea1n bi\u1ebft trong c\u01a1 th\u1ec3 th\u1ef1c v\u1eadt c\u00f3 ch\u1ee9a c\u00e1c s\u1eafc t\u1ed1 nh\u01b0 ch\u1ea5t di\u1ec7p l\u1ee5c, carotin v\u00e0 ch\u1ea5t qu\u1ef3. Qu\u1ea3 chu\u1ed1i ti\u00eau, qu\u1ea3 t\u00e1o, qu\u1ea3 cam qu\u00fdt khi c\u00f2n non h\u00e0m l\u01b0\u1ee3ng ch\u1ea5t di\u1ec7p l\u1ee5c trong th\u1ecbt qu\u1ea3 cao, qu\u1ea3 \u0111\u1ec1u c\u00f3 m\u00e0u xanh, khi ch\u00edn trong qu\u1ea3 s\u1ebd c\u00f3 m\u1ed9t lo\u1ea1i men g\u1ecdi l\u00e0 men di\u1ec7p l\u1ee5c s\u1ebd kh\u00f4ng ng\u1eebng t\u0103ng l\u00ean, kh\u00f4ng ng\u1eebng ph\u00e2n gi\u1ea3i ch\u1ea5t di\u1ec7p l\u1ee5c, khi\u1ebfn cho ch\u1ea5t di\u1ec7p l\u1ee5c d\u1ea7n d\u1ea7n m\u1ea5t \u0111i.<\/p>\n\n\n\n
L\u00fac \u0111\u00f3 ch\u1ea5t carotin v\u00e0 ch\u1ea5t qu\u1ef3 ti\u1ec1m \u1ea9n \u1edf trong qu\u1ea3 th\u00ec d\u1ea7n hi\u1ec7n l\u00ean. Ch\u1ea5t carotin l\u00ean m\u00e0u v\u00e0ng, m\u00e0u da cam ho\u1eb7c m\u00e0u cam \u0111\u1ecf; ch\u1ea5t qu\u1ef3 l\u00ean m\u00e0u \u0111\u1ecf. Cho n\u00ean qu\u1ea3 bi\u1ebfn th\u00e0nh m\u00e0u v\u00e0ng.<\/p>\n\n\n\n
Khi qu\u1ea3 ch\u01b0a ch\u00edn trong b\u00e0o d\u1ecbch c\u1ee7a t\u1ebf b\u00e0o th\u1ecbt qu\u1ea3 t\u00edch tr\u1eef nhi\u1ec1u axit h\u1eefu c\u01a1, v\u00ec th\u1ebf c\u00f3 v\u1ecb chua. T\u1ea5t nhi\u00ean, m\u1ed7i lo\u1ea1i qu\u1ea3 ch\u1ee9a c\u00e1c lo\u1ea1i axit h\u1eefu c\u01a1 kh\u00e1c nhau, v\u00ed d\u1ee5, cam qu\u00fdt ch\u1ee9a axit xitric, t\u00e1o ch\u1ee9a axit malic, nho ch\u1ee9a axit tartanic. C\u00f9ng v\u1edbi qu\u1ea3 d\u1ea7n ch\u00edn, h\u00e0m l\u01b0\u1ee3ng axit h\u1eefu c\u01a1 trong th\u1ecbt qu\u1ea3 s\u1ebd d\u1ea7n gi\u1ea3m \u0111i, c\u00f3 qu\u1ea3 chuy\u1ec3n th\u00e0nh \u0111\u01b0\u1eddng, c\u00f3 qu\u1ea3 tham gia v\u1edbi h\u00f4 h\u1ea5p t\u1ea1o ra cacbon \u0111ioxit v\u00e0 n\u01b0\u1edbc, c\u00f3 qu\u1ea3 s\u1ebd th\u00ec l\u1ea1i b\u1ecb m\u1ed9t s\u1ed1 ion trung h\u00f2a, nh\u01b0 v\u1eady v\u1ecb chua c\u1ee7a qu\u1ea3 c\u0169ng gi\u1ea3m, v\u1ecb ng\u1ecdt s\u1ebd t\u0103ng l\u00ean.<\/p>\n\n\n\n
Ngo\u00e0i ra, trong qu\u1ea3 d\u01b0a ch\u00edn tr\u1eef r\u1ea5t nhi\u1ec1u tinh b\u1ed9t. Trong qu\u00e1 tr\u00ecnh qu\u1ea3 ch\u00edn, c\u00f9ng v\u1edbi t\u00e1c d\u1ee5ng h\u00f4 h\u1ea5p t\u0103ng, tinh b\u1ed9t chuy\u1ec3n h\u00f3a th\u00e0nh \u0111\u01b0\u1eddng. V\u00ec th\u1ebf m\u00e0 qu\u1ea3 \u0111\u1eb7c bi\u1ec7t r\u1ea5t ng\u1ecdt.<\/p>\n\n\n\n
Qu\u1ea3 ch\u01b0a ch\u00edn c\u00f3 v\u1ecb ch\u00e1t, v\u00ec trong d\u1ecbch t\u1ebf b\u00e0o c\u00f3 ch\u1ee9a ch\u1ea5t tannic. Khi ch\u1ea5t tannic b\u1ecb oxi h\u00f3a th\u00e0nh peoxe kh\u00f4ng c\u00f3 v\u1ecb ch\u00e1t, ho\u1eb7c \u0111\u00f4ng k\u1ebft l\u1ea1i th\u00e0nh ch\u1ea5t nh\u1ef1a qu\u1ea3 kh\u00f4ng tan trong n\u01b0\u1edbc, v\u1ecb ch\u00e1t s\u1ebd m\u1ea5t \u0111i.<\/p>\n\n\n\n
B\u00ean c\u1ea1nh \u0111\u00f3, trong qu\u00e1 tr\u00ecnh qu\u1ea3 ch\u00edn c\u00f2n s\u1ea3n sinh ra m\u1ed9t s\u1ed1 lo\u1ea1i m\u1ee1 v\u00e0 lo\u1ea1i an\u0111ehit \u0111\u1eb7c bi\u1ec7t, ch\u00fang c\u00f3 t\u00ednh b\u1ed1c h\u01a1i. V\u00ec v\u1eady ch\u00fang ta s\u1ebd c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c v\u1ecb th\u01a1m c\u1ee7a qu\u1ea3.<\/p>\n","protected":false},"excerpt":{"rendered":"
C\u00f3 r\u1ea5t nhi\u1ec1u qu\u1ea3 c\u1ee7a th\u1ef1c v\u1eadt tr\u01b0\u1edbc khi ch\u00edn v\u00e0 sau khi ch\u00edn x\u1ea3y ra nh\u1eefng thay \u0111\u1ed5i nh\u01b0 tr\u00f2 di\u1ec5n \u1ea3o thu\u1eadt, tr\u01b0\u1edbc khi ch\u00edn c\u1ee9ng, xanh chua, ch\u00e1t, sau khi ch\u00edn sang m\u1ec1m, \u0111\u1ecf, ng\u1ecdt v\u00e0 th\u01a1m. T\u1ea1i sao v\u1eady? Th\u1ef1c ra, \u0111\u1ed9 c\u1ee9ng c\u1ee7a qu\u1ea3 ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c quy\u1ebft \u0111\u1ecbnh b\u1edfi […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,19],"tags":[],"class_list":["post-9780","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-tu-nhien"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9780","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=9780"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/9780\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=9780"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=9780"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=9780"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}