প্রিজারভেটিভস কাকে বলে?

যেসব বাসায়নিক পদার্থ নির্দিষ্ট মাত্রায় ব্যবহারের ফলে খাদ্যবস্তুতে ছত্রাক ও ব্যাকটেরিয়া জন্মাতে পারে না এবং খাদ্যবস্তু রক্ষিত থাকে, এদেরকে ফুড প্রিজারভেটিভস বা প্রিজারভেটিভস বলে।
উদাহরণ : বেনজয়িক এসিড, সোডিয়াম বেনজয়েট।
Post a Comment
<script type="text/javascript" src="https://www.blogger.com/static/v1/widgets/2838643729-widgets.js"></script>
<script type='text/javascript'>
window['__wavt'] = 'AOuZoY72F9doKyDODKJ-q-y_RCXaU96FXw:1749117974786';_WidgetManager._Init('//www.blogger.com/rearrange?blogID\x3d7781624733991316681','//www.shortqna24.com/2025/04/blog-post_28.html','7781624733991316681');
_WidgetManager._SetDataContext([{'name': 'blog', 'data': {'blogId': '7781624733991316681', 'title': 'ShortQnA24 | Free Online Short Notes \x26amp; Recourses for Students ', 'url': 'https://www.shortqna24.com/2025/04/blog-post_28.html', 'canonicalUrl': 'https://www.shortqna24.com/2025/04/blog-post_28.html', 'homepageUrl': 'https://www.shortqna24.com/', 'searchUrl': 'https://www.shortqna24.com/search', 'canonicalHomepageUrl': 'https://www.shortqna24.com/', 'blogspotFaviconUrl': 'https://www.shortqna24.com/favicon.ico', 'bloggerUrl': 'https://www.blogger.com', 'hasCustomDomain': true, 'httpsEnabled': true, 'enabledCommentProfileImages': true, 'gPlusViewType': 'FILTERED_POSTMOD', 'adultContent': false, 'analyticsAccountNumber': 'G-XY566NZGQQ', 'analytics4': true, 'encoding': 'UTF-8', 'locale': 'en', 'localeUnderscoreDelimited': 'en', 'languageDirection': 'ltr', 'isPrivate': false, 'isMobile': false, 'isMobileRequest': false, 'mobileClass': '', 'isPrivateBlog': false, 'isDynamicViewsAvailable': true, 'feedLinks': '\x3clink rel\x3d\x22alternate\x22 type\x3d\x22application/atom+xml\x22 title\x3d\x22ShortQnA24 | Free Online Short Notes \x26amp; Recourses for Students  - Atom\x22 href\x3d\x22https://www.shortqna24.com/feeds/posts/default\x22 /\x3e\n\x3clink rel\x3d\x22alternate\x22 type\x3d\x22application/rss+xml\x22 title\x3d\x22ShortQnA24 | Free Online Short Notes \x26amp; Recourses for Students  - RSS\x22 href\x3d\x22https://www.shortqna24.com/feeds/posts/default?alt\x3drss\x22 /\x3e\n\x3clink rel\x3d\x22service.post\x22 type\x3d\x22application/atom+xml\x22 title\x3d\x22ShortQnA24 | Free Online Short Notes \x26amp; Recourses for Students  - Atom\x22 href\x3d\x22https://www.blogger.com/feeds/7781624733991316681/posts/default\x22 /\x3e\n\n\x3clink rel\x3d\x22alternate\x22 type\x3d\x22application/atom+xml\x22 title\x3d\x22ShortQnA24 | Free Online Short Notes \x26amp; Recourses for Students  - Atom\x22 href\x3d\x22https://www.shortqna24.com/feeds/6347826640021702690/comments/default\x22 /\x3e\n', 'meTag': '', 'adsenseHostId': 'ca-host-pub-1556223355139109', 'adsenseHasAds': false, 'adsenseAutoAds': false, 'boqCommentIframeForm': true, 'loginRedirectParam': '', 'view': '', 'dynamicViewsCommentsSrc': '//www.blogblog.com/dynamicviews/4224c15c4e7c9321/js/comments.js', 'dynamicViewsScriptSrc': '//www.blogblog.com/dynamicviews/b94cc7f0d7db4408', 'plusOneApiSrc': 'https://apis.google.com/js/platform.js', 'disableGComments': true, 'interstitialAccepted': false, 'sharing': {'platforms': [{'name': 'Get link', 'key': 'link', 'shareMessage': 'Get link', 'target': ''}, {'name': 'Facebook', 'key': 'facebook', 'shareMessage': 'Share to Facebook', 'target': 'facebook'}, {'name': 'BlogThis!', 'key': 'blogThis', 'shareMessage': 'BlogThis!', 'target': 'blog'}, {'name': 'X', 'key': 'twitter', 'shareMessage': 'Share to X', 'target': 'twitter'}, {'name': 'Pinterest', 'key': 'pinterest', 'shareMessage': 'Share to Pinterest', 'target': 'pinterest'}, {'name': 'Email', 'key': 'email', 'shareMessage': 'Email', 'target': 'email'}], 'disableGooglePlus': true, 'googlePlusShareButtonWidth': 0, 'googlePlusBootstrap': '\x3cscript type\x3d\x22text/javascript\x22\x3ewindow.___gcfg \x3d {\x27lang\x27: \x27en\x27};\x3c/script\x3e'}, 'hasCustomJumpLinkMessage': false, 'jumpLinkMessage': 'Read more', 'pageType': 'item', 'postId': '6347826640021702690', 'pageName': '\u09aa\u09cd\u09b0\u09bf\u099c\u09be\u09b0\u09ad\u09c7\u099f\u09bf\u09ad\u09b8 \u0995\u09be\u0995\u09c7 \u09ac\u09b2\u09c7?', 'pageTitle': 'ShortQnA24 | Free Online Short Notes \x26amp; Recourses for Students : \u09aa\u09cd\u09b0\u09bf\u099c\u09be\u09b0\u09ad\u09c7\u099f\u09bf\u09ad\u09b8 \u0995\u09be\u0995\u09c7 \u09ac\u09b2\u09c7?', 'metaDescription': ''}}, {'name': 'features', 'data': {}}, {'name': 'messages', 'data': {'edit': 'Edit', 'linkCopiedToClipboard': 'Link copied to clipboard!', 'ok': 'Ok', 'postLink': 'Post Link'}}, {'name': 'template', 'data': {'name': 'custom', 'localizedName': 'Custom', 'isResponsive': true, 'isAlternateRendering': false, 'isCustom': true}}, {'name': 'view', 'data': {'classic': {'name': 'classic', 'url': '?view\x3dclassic'}, 'flipcard': {'name': 'flipcard', 'url': '?view\x3dflipcard'}, 'magazine': {'name': 'magazine', 'url': '?view\x3dmagazine'}, 'mosaic': {'name': 'mosaic', 'url': '?view\x3dmosaic'}, 'sidebar': {'name': 'sidebar', 'url': '?view\x3dsidebar'}, 'snapshot': {'name': 'snapshot', 'url': '?view\x3dsnapshot'}, 'timeslide': {'name': 'timeslide', 'url': '?view\x3dtimeslide'}, 'isMobile': false, 'title': '\u09aa\u09cd\u09b0\u09bf\u099c\u09be\u09b0\u09ad\u09c7\u099f\u09bf\u09ad\u09b8 \u0995\u09be\u0995\u09c7 \u09ac\u09b2\u09c7?', 'description': 'ShortQnA24 offers the best educational, programming, technical short questions. Stay informed with concise answers and share with friends', 'url': 'https://www.shortqna24.com/2025/04/blog-post_28.html', 'type': 'item', 'isSingleItem': true, 'isMultipleItems': false, 'isError': false, 'isPage': false, 'isPost': true, 'isHomepage': false, 'isArchive': false, 'isLabelSearch': false, 'postId': 6347826640021702690}}, {'name': 'widgets', 'data': [{'title': 'ShortQnA24 | Free Online Short Notes \x26amp; Recourses for Students  (Header)', 'type': 'Header', 'sectionId': 'sec_Header_Title', 'id': 'Header01'}, {'title': 'Try \x27React\x27', 'type': 'BlogSearch', 'sectionId': 'sec_Header_Search', 'id': 'BlogSearch01'}, {'title': 'Header Icon', 'type': 'TextList', 'sectionId': 'sec_Header_Icon', 'id': 'TextList01'}, {'title': 'Bookmark Posts', 'type': 'LinkList', 'sectionId': 'sec_Header_Icon', 'id': 'LinkList02'}, {'title': 'Navigation Menu', 'type': 'HTML', 'sectionId': 'sec_Nav_Widgets_1', 'id': 'HTML01'}, {'title': 'Additional Links', 'type': 'PageList', 'sectionId': 'sec_Nav_Widgets_2', 'id': 'PageList02'}, {'title': 'Social Links', 'type': 'LinkList', 'sectionId': 'sec_Nav_Widgets_2', 'id': 'LinkList04'}, {'title': 'Tabbed Menu', 'type': 'LinkList', 'sectionId': 'sec_Notif_Widgets', 'id': 'LinkList05'}, {'title': 'Notification', 'type': 'LinkList', 'sectionId': 'sec_Notif_Widgets', 'id': 'LinkList06'}, {'title': 'Pinned Post', 'type': 'FeaturedPost', 'sectionId': 'sec_Top_Widgets', 'id': 'FeaturedPost01', 'postId': '285581024559815657'}, {'title': 'Blog Posts', 'type': 'Blog', 'sectionId': 'sec_Main_Widgets', 'id': 'Blog01', 'posts': [{'id': '6347826640021702690', 'title': '\u09aa\u09cd\u09b0\u09bf\u099c\u09be\u09b0\u09ad\u09c7\u099f\u09bf\u09ad\u09b8 \u0995\u09be\u0995\u09c7 \u09ac\u09b2\u09c7?', 'showInlineAds': false}], 'footerBylines': [{'regionName': 'footer1', 'items': [{'name': 'author', 'label': 'Published by'}, {'name': 'timestamp', 'label': 'On'}, {'name': 'comments', 'label': 'Comment'}, {'name': 'share', 'label': ''}]}, {'regionName': 'footer2', 'items': [{'name': 'labels', 'label': 'in'}]}, {'regionName': 'footer3', 'items': [{'name': 'location', 'label': 'Location:'}]}], 'allBylineItems': [{'name': 'author', 'label': 'Published by'}, {'name': 'timestamp', 'label': 'On'}, {'name': 'comments', 'label': 'Comment'}, {'name': 'share', 'label': ''}, {'name': 'labels', 'label': 'in'}, {'name': 'location', 'label': 'Location:'}]}, {'title': 'Categorized Posts', 'type': 'LinkList', 'sectionId': 'sec_Main_Widgets', 'id': 'LinkList07'}, {'title': 'Table of contents', 'type': 'HTML', 'sectionId': 'sec_Main_Widgets', 'id': 'HTML11'}, {'title': 'Popular Posts', 'type': 'PopularPosts', 'sectionId': 'sec_Side_Widgets', 'id': 'PopularPosts01', 'posts': [{'title': '\u09ad\u09cd\u09af\u09be\u09a8\u09a1\u09be\u09b0 \u0993\u09df\u09be\u09b2\u09b8 \u09ac\u09b2 \u0995\u09be\u0995\u09c7 \u09ac\u09b2\u09c7?', 'id': 1399928192131620242}, {'title': '\u0997\u09be\u09dd \u098f\u09b8\u09bf\u09a1 \u0995\u09be\u0995\u09c7 \u09ac\u09b2\u09c7?', 'id': 9197683462205918951}, {'title': '\u09a6\u09c2\u09b0\u09cd\u09ac\u09b2 \u09ac\u09be \u09ae\u09c3\u09a6\u09c1 \u098f\u09b8\u09bf\u09a1 \u0995\u09be\u0995\u09c7 \u09ac\u09b2\u09c7?', 'id': 1565457802136963726}, {'title': '\u0987\u09b2\u09c7\u0995\u099f\u09cd\u09b0\u09a8 \u0986\u09b8\u0995\u09cd\u09a4\u09bf \u0995\u09be\u0995\u09c7 \u09ac\u09b2\u09c7?', 'id': 2711847663789958160}, {'title': '\u0986\u09af\u09bc\u09a8\u09bf\u0995 \u09ac\u09a8\u09cd\u09a7\u09a8 \u0995\u09be\u0995\u09c7 \u09ac\u09b2\u09c7?', 'id': 4029166728375114313}, {'title': '\u09b8\u09ac\u09b2 \u09ac\u09be \u09a4\u09c0\u09ac\u09cd\u09b0 \u098f\u09b8\u09bf\u09a1 \u0995\u09be\u0995\u09c7 \u09ac\u09b2\u09c7? ', 'id': 4698371369664596142}, {'title': '\u09b2\u0998\u09c1 \u098f\u09b8\u09bf\u09a1 \u0995\u09be\u0995\u09c7 \u09ac\u09b2\u09c7?', 'id': 5999381384722866292}, {'title': '\u09aa\u09cd\u09b0\u09bf\u099c\u09be\u09b0\u09ad\u09c7\u099f\u09bf\u09ad\u09b8 \u0995\u09be\u0995\u09c7 \u09ac\u09b2\u09c7?', 'id': 6347826640021702690}, {'title': '\u09b0\u09be\u09b8\u09be\u09df\u09a8\u09bf\u0995 \u09ac\u09a8\u09cd\u09a7\u09a8 \u0995\u09be\u0995\u09c7 \u09ac\u09b2\u09c7?', 'id': 7297286535524230760}, {'title': '\u0997\u09be\u0987\u0997\u09be\u09b0 \u09ae\u09c1\u09b2\u09be\u09b0 \u0995\u09be\u0989\u09a8\u09cd\u099f\u09be\u09b0 \u0995\u09c0?', 'id': 3460438946700902711}]}, {'title': 'Labels', 'type': 'Label', 'sectionId': 'sec_Side_Widgets', 'id': 'Label01'}, {'title': 'Take me back', 'type': 'HTML', 'sectionId': 'sec_Error_404', 'id': 'HTML404'}, {'title': 'Organization Name [BlogTitle]', 'type': 'Image', 'sectionId': 'sec_Footer_Widgets_1', 'id': 'Image21'}, {'title': 'Social Media Links', 'type': 'LinkList', 'sectionId': 'sec_Footer_Widgets_1', 'id': 'LinkList21'}, {'title': 'Important Link', 'type': 'LinkList', 'sectionId': 'sec_Footer_Widgets_2', 'id': 'LinkList22'}, {'title': 'Policy', 'type': 'LinkList', 'sectionId': 'sec_Footer_Widgets_3', 'id': 'LinkList23'}, {'title': 'Support', 'type': 'LinkList', 'sectionId': 'sec_Footer_Widgets_4', 'id': 'LinkList24'}, {'title': 'Credit', 'type': 'HTML', 'sectionId': 'sec_Footer_Credit', 'id': 'HTML21'}, {'title': 'Mobile Menu', 'type': 'TextList', 'sectionId': 'sec_Mobile_Menu', 'id': 'TextList99'}, {'title': 'Labels', 'type': 'Label', 'sectionId': 'sec_Theme_Hidden', 'id': 'Label41'}, {'title': '\u09af\u09cb\u0997\u09be\u09af\u09cb\u0997 \u09ab\u09b0\u09cd\u09ae', 'type': 'ContactForm', 'sectionId': 'sec_Theme_Hidden', 'id': 'ContactForm41'}, {'title': 'Pageviews last month', 'type': 'Stats', 'sectionId': 'sec_Theme_Hidden', 'id': 'Stats41'}, {'title': 'Progressive Web App', 'type': 'LinkList', 'sectionId': 'sec_Addon_Widgets', 'id': 'LinkList62'}, {'title': 'Cookie Consent [NoTitle]', 'type': 'LinkList', 'sectionId': 'sec_Addon_Widgets', 'id': 'LinkList63'}, {'title': 'Image Uploader', 'type': 'Image', 'sectionId': 'sec_Addon_Widgets', 'id': 'Image61'}]}]);
_WidgetManager._RegisterWidget('_HeaderView', new _WidgetInfo('Header01', 'sec_Header_Title', document.getElementById('Header01'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_BlogSearchView', new _WidgetInfo('BlogSearch01', 'sec_Header_Search', document.getElementById('BlogSearch01'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_TextListView', new _WidgetInfo('TextList01', 'sec_Header_Icon', document.getElementById('TextList01'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList02', 'sec_Header_Icon', document.getElementById('LinkList02'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML01', 'sec_Nav_Widgets_1', document.getElementById('HTML01'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_PageListView', new _WidgetInfo('PageList02', 'sec_Nav_Widgets_2', document.getElementById('PageList02'), {'title': 'Additional Links', 'links': [{'isCurrentPage': false, 'href': '/p/sitemap.html', 'title': 'Sitemap'}, {'isCurrentPage': false, 'href': '/p/disclaimer.html', 'title': 'Disclaimer'}, {'isCurrentPage': false, 'href': '/p/privacy-policy.html', 'title': 'Privacy'}], 'mobile': false, 'showPlaceholder': true, 'hasCurrentPage': false}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList04', 'sec_Nav_Widgets_2', document.getElementById('LinkList04'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList05', 'sec_Notif_Widgets', document.getElementById('LinkList05'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList06', 'sec_Notif_Widgets', document.getElementById('LinkList06'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_FeaturedPostView', new _WidgetInfo('FeaturedPost01', 'sec_Top_Widgets', document.getElementById('FeaturedPost01'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_BlogView', new _WidgetInfo('Blog01', 'sec_Main_Widgets', document.getElementById('Blog01'), {'cmtInteractionsEnabled': false, 'lightboxEnabled': true, 'lightboxModuleUrl': 'https://www.blogger.com/static/v1/jsbin/155092491-lbx.js', 'lightboxCssUrl': 'https://www.blogger.com/static/v1/v-css/123180807-lightbox_bundle.css'}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList07', 'sec_Main_Widgets', document.getElementById('LinkList07'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML11', 'sec_Main_Widgets', document.getElementById('HTML11'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_PopularPostsView', new _WidgetInfo('PopularPosts01', 'sec_Side_Widgets', document.getElementById('PopularPosts01'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LabelView', new _WidgetInfo('Label01', 'sec_Side_Widgets', document.getElementById('Label01'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML404', 'sec_Error_404', document.getElementById('HTML404'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_ImageView', new _WidgetInfo('Image21', 'sec_Footer_Widgets_1', document.getElementById('Image21'), {'resize': true}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList21', 'sec_Footer_Widgets_1', document.getElementById('LinkList21'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList22', 'sec_Footer_Widgets_2', document.getElementById('LinkList22'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList23', 'sec_Footer_Widgets_3', document.getElementById('LinkList23'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList24', 'sec_Footer_Widgets_4', document.getElementById('LinkList24'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_HTMLView', new _WidgetInfo('HTML21', 'sec_Footer_Credit', document.getElementById('HTML21'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_TextListView', new _WidgetInfo('TextList99', 'sec_Mobile_Menu', document.getElementById('TextList99'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LabelView', new _WidgetInfo('Label41', 'sec_Theme_Hidden', document.getElementById('Label41'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_ContactFormView', new _WidgetInfo('ContactForm41', 'sec_Theme_Hidden', document.getElementById('ContactForm41'), {'contactFormMessageSendingMsg': 'Sending...', 'contactFormMessageSentMsg': 'Your message has been sent.', 'contactFormMessageNotSentMsg': 'Message could not be sent. Please try again later.', 'contactFormInvalidEmailMsg': 'A valid email address is required.', 'contactFormEmptyMessageMsg': 'Message field cannot be empty.', 'title': '\u09af\u09cb\u0997\u09be\u09af\u09cb\u0997 \u09ab\u09b0\u09cd\u09ae', 'blogId': '7781624733991316681', 'contactFormNameMsg': 'Name', 'contactFormEmailMsg': 'Email', 'contactFormMessageMsg': 'Message', 'contactFormSendMsg': 'Send', 'contactFormToken': 'AOuZoY5vXeqXK2nnKt9myfwcLJsLCw1ppQ:1749117974787', 'submitUrl': 'https://www.blogger.com/contact-form.do'}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_StatsView', new _WidgetInfo('Stats41', 'sec_Theme_Hidden', document.getElementById('Stats41'), {'title': 'Pageviews last month', 'showGraphicalCounter': false, 'showAnimatedCounter': false, 'showSparkline': true, 'statsUrl': '//www.shortqna24.com/b/stats?style\x3dBLACK_TRANSPARENT\x26timeRange\x3dLAST_WEEK\x26token\x3dAPq4FmAQ1E4SAUBnL8IJZffVWa42-n0p7sNcURzK6Wt2eCjqeZRpIsC602aIMCoW5bPRt_7CCmV0PA9-IzYP1ogIwLefP6v6mQ'}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList62', 'sec_Addon_Widgets', document.getElementById('LinkList62'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_LinkListView', new _WidgetInfo('LinkList63', 'sec_Addon_Widgets', document.getElementById('LinkList63'), {}, 'displayModeFull'));
_WidgetManager._RegisterWidget('_ImageView', new _WidgetInfo('Image61', 'sec_Addon_Widgets', document.getElementById('Image61'), {'resize': false}, 'displayModeFull'));
</script>
</body>
ShortQnA24 | Free Online Short Notes & Recourses for Students

প্রিজারভেটিভস কাকে বলে?

প্রিজারভেটিভস কাকে বলে?

Post a Comment

ভ্যানডার ওয়ালস বল কাকে বলে?

গাঢ় এসিড কাকে বলে?

দূর্বল বা মৃদু এসিড কাকে বলে?

ইলেকট্রন আসক্তি কাকে বলে?

আয়নিক বন্ধন কাকে বলে?

সবল বা তীব্র এসিড কাকে বলে?

লঘু এসিড কাকে বলে?

রাসায়নিক বন্ধন কাকে বলে?

গাইগার মুলার কাউন্টার কী?

ShortQnA24 | Free Online Short Notes & Recourses for Students
