{"id":2247,"date":"2014-02-17T04:00:05","date_gmt":"2014-02-17T09:00:05","guid":{"rendered":"http:\/\/admin.acceleratingscience.com\/?p=2247"},"modified":"2016-04-26T17:20:11","modified_gmt":"2016-04-26T17:20:11","slug":"virginity-testing-the-olive-oil-method","status":"publish","type":"post","link":"https:\/\/www.thermofisher.com\/blog\/food\/virginity-testing-the-olive-oil-method\/","title":{"rendered":"Virginity Testing &#8211; the Olive Oil Method"},"content":{"rendered":"<p><span><img loading=\"lazy\" decoding=\"async\" style=\"float: right;\" title=\"Olives and oil\" alt=\"\" src=\"http:\/\/admin.acceleratingscience.com\/wp-content\/uploads\/2014\/02\/shutterstock_33465100.jpg\" width=\"200\" height=\"200\" \/>For consumers wanting to eat a healthy diet, this often means paying more and buying premium food products <\/span><span>such as <a href=\"http:\/\/en.wikipedia.org\/wiki\/Olive_oil\" target=\"_blank\">extra virgin olive oil<\/a> (EVOO). Harvested as the first pressing from freshly picked olive fruits, EVOO\u00a0is prized for its taste and beneficial levels of monounsaturated fatty acids. It is a\u00a0<\/span>key component of the heart-healthy Mediterranean diet\u00a0and consumer demand is rising above production levels.  <span>Unfortunately, this\u00a0high demand<\/span>\u00a0can be tempting to unscrupulous producers, who try to maximize their profits by blending\u00a0EVOO\u00a0with cheaper alternatives.\u00a0This <a href=\"http:\/\/admin.acceleratingscience.com\/food\/which-udder-high-resolution-mass-spectrometry-for-authenticating-the-source-and-quality-of-dairy-products\/\">adulteration with lower quality ingredients<\/a>\u00a0can be hard for both consumers and food inspectors to detect. While adulteration often simply results in a lower quality product, using potential allergens or non-food grade materials is a serious concern.  <span>EVOO can be extended using lower quality, refined olive oils from solvent extractions of EVOO by-products e.g., <a href=\"http:\/\/en.wikipedia.org\/wiki\/Olive_pomace_oil\" target=\"_blank\">pomace oil<\/a><\/span><span>, or with cheaper vegetable oils, e.g., sunflower, soybean or canola. Usually this doesn\u2019t pose a health risk but, since adulterants are not declared on food\u00a0labels, the consequences of unintentionally consuming an allergen like peanut oil is possible and can be serious for people with dietary allergies. Moreover, the consequences of adulterating EVOO with non-food grade oils can be disastrous. These oils can look similar to olive oil but ingestion can be fatal. In one notable incident, the &#8220;<a href=\"http:\/\/archinte.jamanetwork.com\/article.aspx?articleid=604071\" target=\"_blank\">toxic oil syndrome<\/a>&#8221; in the early 1980s, olive oil adulteration using industrial-grade rapeseed oil caused many deaths and left others with chronic ill health. Researchers believe that the rapeseed oil, not meant for human consumption, was contaminated with aniline and other toxins as a result of industrial processing.<\/span><span class=\"thread\"><span> <\/span><\/span>  <span>Scientists at Thermo Scientific have recently refined a simple <a href=\"http:\/\/www.dionex.com\/en-us\/webdocs\/114926-PO-HPLC-Olive-Oils-PN70689_E.pdf\" target=\"_blank\">high-performance liquid chromatography (HPLC) and charged aerosol detection method<\/a><\/span><span>\u00a0that uses the <a href=\"http:\/\/www.thermoscientific.com\/en\/products\/lc-systems.html\" target=\"_blank\">Dionex UltiMate 3000 system <\/a><\/span><span>to characterize the triglyceride (TAG) profile of an oil sample. Using a straightforward dilution step for preparation, the samples were quickly analyzed to show the differing TAG profiles in pure EVOO and product adulterated with corn, hazelnut or pomace oils. <a href=\"http:\/\/www.ncbi.nlm.nih.gov\/pubmed\/21060998\" target=\"_blank\">Principal component analysis<\/a> (PCA)<\/span><span>\u00a0easily highlighted differences in the chromatograms, allowing discrimination between pure and adulterated samples according to TAG clusters.<\/span>  <span>It&#8217;s also worth noting that this method isn&#8217;t just for food safety testing; HPLC and charged aerosol detection is useful for <a href=\"http:\/\/www.dionex.com\/en-us\/webdocs\/87439-PO-HPLC-Global-Lipids-PN70533_E.pdf\" target=\"_blank\">examining lipid profiles<\/a> in a number of food and industrial oils<\/span><span>. Numerous classes of lipids can be detected in one analysis after a simple dilution pretreatment. \u00a0 <\/span>  <span>Using only a single HPLC method, complex oil samples can be fully characterized and laboratory procedures streamlined, thus saving time and resources.<\/span>  <em>Interested in how Charged Aerosol Detection works?\u00a0 <a href=\"http:\/\/www.thermoscientific.com\/en\/about-us\/promotions\/thermo-scientific-dionex-corona-veo-charged-aerosol-detector.html\" target=\"_blank\">Learn more <\/a>about this highly sensitive universal detector which is capable of measuring all non-volatiles and many semi-volatile analytes with similar response. <\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>For consumers wanting to eat a healthy diet, this often means paying more and buying premium food products such as extra virgin olive oil (EVOO). Harvested as the first pressing from freshly picked olive fruits, EVOO\u00a0is prized for its taste and beneficial levels of monounsaturated fatty acids. It is a\u00a0key component of the heart-healthy Mediterranean<\/p>\n","protected":false},"author":21,"featured_media":2318,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_monsterinsights_skip_tracking":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[433],"tags":[],"division":[],"class_list":{"0":"post-2247","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-chemical-elemental-analysis","8":"entry"},"_selected_authors":"","_selected_reviewers":"","acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.8 (Yoast SEO v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Virginity Testing - the Olive Oil Method - Examining Food<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.thermofisher.com\/blog\/food\/virginity-testing-the-olive-oil-method\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Virginity Testing - the Olive Oil Method\" \/>\n<meta property=\"og:description\" content=\"For consumers wanting to eat a healthy diet, this often means paying more and buying premium food products such as extra virgin olive oil (EVOO). Harvested as the first pressing from freshly picked olive fruits, EVOO\u00a0is prized for its taste and beneficial levels of monounsaturated fatty acids. It is a\u00a0key component of the heart-healthy Mediterranean\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.thermofisher.com\/blog\/food\/virginity-testing-the-olive-oil-method\/\" \/>\n<meta property=\"og:site_name\" content=\"Examining Food\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/thermofisher\" \/>\n<meta property=\"article:published_time\" content=\"2014-02-17T09:00:05+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2016-04-26T17:20:11+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/admin.acceleratingscience.com\/food\/wp-content\/uploads\/sites\/5\/2014\/02\/shutterstock_33465100.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"500\" \/>\n\t<meta property=\"og:image:height\" content=\"500\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Amanda Maxwell\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@thermofisher\" \/>\n<meta name=\"twitter:site\" content=\"@thermofisher\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Amanda Maxwell\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.thermofisher.com\\\/blog\\\/food\\\/virginity-testing-the-olive-oil-method\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.thermofisher.com\\\/blog\\\/food\\\/virginity-testing-the-olive-oil-method\\\/\"},\"author\":{\"name\":\"Amanda Maxwell\",\"@id\":\"https:\\\/\\\/admin.acceleratingscience.com\\\/food\\\/#\\\/schema\\\/person\\\/f572b16973d4ff71460b75a0a41a3632\"},\"headline\":\"Virginity Testing &#8211; 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