{"id":155246,"date":"2021-06-03T11:55:13","date_gmt":"2021-06-03T11:55:13","guid":{"rendered":"https:\/\/blog.hannaservice.eu\/odredjivanje-vitamina-d-i-laktoze-u-mleku\/"},"modified":"2022-10-07T14:29:02","modified_gmt":"2022-10-07T14:29:02","slug":"odredjivanje-vitamina-d-i-laktoze-u-mleku","status":"publish","type":"post","link":"https:\/\/blog.hannaservice.eu\/sr\/odredjivanje-vitamina-d-i-laktoze-u-mleku\/","title":{"rendered":"Odre\u0111ivanje vitamina D i laktoze u mleku"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"155246\" class=\"elementor elementor-155246 elementor-155189\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4d46d58 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4d46d58\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-37dad41\" data-id=\"37dad41\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-26fafab elementor-widget elementor-widget-text-editor\" data-id=\"26fafab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2fcc8dfa lead elementor-widget elementor-widget-theme-post-excerpt\" data-id=\"2fcc8dfa\" data-element_type=\"widget\" data-widget_type=\"theme-post-excerpt.default\">\n<div class=\"elementor-widget-container\">Mleko i mle\u010dni proizvodi va\u017ean su izvor razli\u010ditih hranjivih sastojaka, kalcijuma i drugih minerala i vitamina. Uz to, izvor su belan\u010devina i, ne manje va\u017eno, izvor dobrih bakterija &#8211; probiotika. Zbog svega navedenog svakodnevno u prehranu, a posebno u prehranu dece, uvrstite mleko i mle\u010dne proizvode.<br \/>\n<img decoding=\"async\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2021\/06\/top-view-organic-milk-with-fresh-cheese.jpg\" alt=\"top-view-organic-milk-with-fresh-cheese\" \/><\/div>\n<\/div>\n<div id=\"postContent\" class=\"elementor-element elementor-element-24faeb63 elementor-widget elementor-widget-theme-post-content\" data-id=\"24faeb63\" data-element_type=\"widget\" data-widget_type=\"theme-post-content.default\">\n<div class=\"elementor-widget-container\">\n<div class=\"elementor elementor-151797 elementor-151792 elementor-151685\" data-elementor-type=\"wp-post\" data-elementor-id=\"151797\" data-elementor-settings=\"[]\">\n<div class=\"elementor-inner\">\n<div class=\"elementor-section-wrap\">\n<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a091b0a elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a091b0a\" data-element_type=\"section\">\n<div><\/div>\n<div class=\"elementor-widget-container\"><strong>Vitamin D u mleku i mle\u010dnim proizvodima<\/strong><\/div>\n<div>Mnogi su mi\u0161ljenja da \u0107e dovoljna izlo\u017eenost suncu stvoriti dovoljno vitamina D, ali malo ko zna da se vitamin D proizvodi samo tokom odre\u0111enih meseci u godini kada je prodor sun\u010devih zraka pod pravim uglom.<\/div>\n<div><\/div>\n<\/section>\n<div><img decoding=\"async\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2021\/06\/Determinating-vitamin-D-and-lactose-in-milk.jpg\" alt=\"Determinating- vitamin-D-and-lactose in-milk\" \/><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div><\/div>\n<div>\n<p>Budu\u0107i da velikom broju ljudi nedostaje vitamin D, vrlo \u010desto razli\u010diti proizvo\u0111a\u010di mleka svoje proizvode oboga\u0107uju ovim vitaminom. Mnoge su zemlje tako\u0111e zakonski regulisale dodavanje i oboga\u0107ivanje hrane vitaminom D kako bi spre\u010dile njegov nedostatak. Pozitivni efekti vitamina D na ljudsko zdravlje su nebrojeni, a njegov dodatak u mleko sasvim je logi\u010dan. Vitamin D stimuli\u0161e transport kalcijuma u kosti i druge stanice. To zna\u010di da ako nema dovoljno vitamina D, kalcijum se ne\u0107e nakupljati u kostima. To mo\u017ee dugoro\u010dno dovesti do osteoporoze i \u010destih preloma.<\/p>\n<p>Ako odlu\u010dite obogatiti svoj proizvod vitaminom D, budite sigurni da ta\u010dno znate kojom ste koncentracijom obogatili svoj proizvod. Brojni proizvo\u0111a\u010di koriste razli\u010dite analiti\u010dke metode za odre\u0111ivanje koncentracije vitamina D u mle\u010dnim proizvodima.<\/p>\n<p>Jedna od metoda koja se koristi za odre\u0111ivanje vitamina D je kolorimetrijska metoda sa antimon trihlorid acetil hloridom.<\/p>\n<p>Princip metode:<\/p>\n<p>Vitamin D sa rastvorom SbCl3 u hloroformu daje naran\u010dasto-\u017eutu boju \u010dija je maksimalna apsorpcija 500 nm. Potpuni razvoj boja traje 5-15 minuta. Jedino \u0161to mo\u017ee uticati na ta\u010dan udeo vitamina D je prisutnost ostalih sastojaka koji ometaju pravilno funkcionisanje ove metode jer reaguju sa navedenim reagensom (vitamin A, vitamin D provitamin, itd.)<\/p>\n<p>Hanna Instruments ima re\u0161enje za odre\u0111ivanje vitamina D. Za sve \u0161to va\u0161e oko ne mo\u017ee videti, to mo\u017ee biti iris.<\/p>\n<p><strong>Iris vidljivi spektrofotometar \u2013 HI801<\/strong><\/p>\n<p>Iris HI801 elegantan je i intuitivan spektrofotometar koji omogu\u0107uje merenje svih talasnih du\u017eima vidljive svetlosti.<\/p>\n<\/div>\n<p>Prilagodite svoje metode, napravite \u0161irok raspon merenja i budite sigurni<br \/>\n<img decoding=\"async\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2021\/06\/Determinating-vitamin-D-and-lactose-in-milk_html_m54a585cd.jpg\" alt=\"Determinating vitamin D and lactose in milk_html_m54a585cd\" \/><br \/>\n<a href=\"https:\/\/hannainstruments.rs\/odredjivanje-vitamina-d-i-laktoze-u-mleku\/\">SAZNAJ VI\u0160E<\/a><\/p>\n<p>&nbsp;<\/p>\n<p class=\"western\">u ta\u010dnost testiranja pomo\u0107u irisa.<\/p>\n<p>1 \uff77 iris ima precizan odabir talasne du\u017eine izme\u0111u 340 nm i 900 nm za potpunu uskla\u0111enost i preciznost metoda neophodnih u industrijama poput profesionalnih laboratorija, postrojenja za pro\u010di\u0161\u0107avanje vode, vinarija i jo\u0161 mnogo toga.<\/p>\n<p>2 \uff77 Rezultati su dosledni i ta\u010dni bez obzira na propusnost sa visokokvalitetnim i jedinstveno dizajniranim opti\u010dkim sistemom.<\/p>\n<p>3, Mogu\u0107nosti prilago\u0111avanja uklju\u010duju vi\u0161e oblika i veli\u010dina kiveta, prilago\u0111ene krivulje kalibracije i metode.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Laktoza u mleku i mle\u010dnim proizvodima<\/strong><\/p>\n<p>Laktoza je disaharid, \u0161e\u0107er koji se prirodno nalazi u mleku. Daje ose\u0107aj slatko\u0107e u mleku (iako je manje slatko od ostalih \u0161e\u0107era), a pod uticajem mikroorganizama postoje razli\u010dite vrste fermentacije (mle\u010dno-kiselinska, alkoholna, propionsko-kiselinska \u2026)<\/p>\n<p>Otprilike 65\u201370% svetske populacije ne podnosi laktozu. Intolerancija na laktozu javlja se kada u tankom crevu nema dovoljno enzima laktoze, koji je odgovoran za probavu laktoze. Simptomi uklju\u010duju bolove u trbuhu, nadutost, proliv, mu\u010dninu i gasove. Jedna od najsigurnijih terapija je izbegavanje laktoze u hrani. Stoga su mle\u010dni proizvodi koji sadr\u017ee smanjeni sadr\u017eaj laktoze sve popularniji i relativno su sigurni za upotrebu kod osoba sa intolerancijom na laktozu. Razli\u010diti ljudi sa ovim problemom razli\u010dito podnose odre\u0111enu koli\u010dinu laktoze. Zbog toga je potrebno odrediti koncentraciju laktoze u svakom proizvodu.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2021\/06\/Determinating-vitamin-D-and-lactose-in-milk_html_m2ea6a1e6.jpg\" alt=\"Determinating vitamin D and lactose in milk_html_m2ea6a1e6\" \/><\/p>\n<p>Odre\u0111ivanje laktoze u mleku mo\u017ee se sprovesti polarimetrijski, gravimetrijski, enzimatski, diferencijalni pH.<\/p>\n<p>U enzimskoj metodi laktoza se hidrolizuje u glukozu u prisutnosti beta-glaktosidaze, glukoza se oksiduje sa NAD + u prisutnosti beta-glukoze dehidrogenaze u galakturonsku kiselinu, a koli\u010dina nastalog NADH (A = 340 nm) odgovara sadr\u017eaj laktoze. Za ovo merenje Hanna Instruments preporu\u010duje upotrebu\u00a0<strong>vidljivog spektrofotometra HI801-iris.<\/strong><\/p>\n<p>Tehnika diferencijalnog pH za merenje laktoze u mleku temelji se na promenama pH zbog enzimskih reakcija. Merimo promene pH uzrokovane reakcijom glukoze i ATP-a u prisutnosti enzima heksokinaze pre i nakon obrade uzorka sa \u03b2-galaktozidazom. Nakon 3 sata izmerena je promena pH, dodata je HK i nadzirana je promena pH tokom 4 sata kako bi se promatralo stvaranje d-fruktoze-6-fosfata.<\/p>\n<p>Za merenje promena pH vrednosti odaberite Hanin\u00a0<strong>HI98162 Professional Portable Milk pH Meter<\/strong><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/blog.hannaservice.eu\/wp-content\/uploads\/2021\/06\/Determinating-vitamin-D-and-lactose-in-milk_html_3d3fbd2a.jpg\" alt=\"Determinating vitamin D and lactose in milk_html_3d3fbd2a\" \/><\/p>\n<p><a class=\"elementor-button-link elementor-button elementor-size-sm\" role=\"button\" href=\"https:\/\/hannainstruments.rs\/proizvod\/prenosni-ph-metar-za-mleko-hi99162\/\"><span class=\"elementor-button-content-wrapper\"><span class=\"elementor-button-text\">LEARN MORE<\/span><\/span><\/a><\/p>\n<p>HI98162 je robusni, vodootporni, prenosni pH mera\u010d za mleko koji meri pH i temperaturu koristec\u0301i specijalizovanu FC1013 sondu za mle\u010dne proizvode. Ovaj profesionalni, vodootporni metar je napravljen po IP67 standardima. HI98162 se isporu\u010duje sa svim potrebnim dodacima za obavljanje merenja pH \/ temperature upakovanih u izdr\u017eljiv termoformirani kofer za no\u0161enje.<\/p>\n<ul>\n<li>Brzi DIN priklju\u010dak<\/li>\n<li>USB priklju\u010dak za transfer podataka<\/li>\n<li>Nameski taster za pomo\u0107 (HELP)<\/li>\n<\/ul>\n<p>Autor: Tajana Fran\u010di\u0107, mag.nutr.<\/p>\n<p>&nbsp;<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Mleko i mle\u010dni proizvodi va\u017ean su izvor razli\u010ditih hranjivih sastojaka, kalcijuma i drugih minerala i [&hellip;]<\/p>\n","protected":false},"author":17,"featured_media":155194,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[365],"tags":[],"class_list":["post-155246","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-hrana"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - 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