{"id":11193,"date":"2023-04-11T11:02:39","date_gmt":"2023-04-11T10:02:39","guid":{"rendered":"https:\/\/fei-online.com\/?p=11193"},"modified":"2023-04-11T11:03:23","modified_gmt":"2023-04-11T10:03:23","slug":"comminution-of-nuts-for-sample-analysis","status":"publish","type":"post","link":"https:\/\/fei-online.com\/comminution-of-nuts-for-sample-analysis\/","title":{"rendered":"Comminution of nuts for sample analysis"},"content":{"rendered":"<div id='av_section_1'  class='avia-section main_color avia-section-default avia-no-border-styling  avia-bg-style-scroll  avia-builder-el-0  avia-builder-el-no-sibling   container_wrap fullsize' style=' '  ><div class='container' ><main  role=\"main\" itemprop=\"mainContentOfPage\"  class='template-page content  av-content-full alpha units'><div class='post-entry post-entry-type-page post-entry-11193'><div class='entry-content-wrapper clearfix'>\n<div class=\"flex_column av_one_fifth  flex_column_div av-zero-column-padding first  avia-builder-el-1  el_before_av_three_fifth  avia-builder-el-first  \" style='border-radius:0px; '><section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><p style=\"text-align: center\"><div id=\"ads-slider-28\" class=\"custom-slider ads-slider-147882659 ads-slider\"><ul><li><!--Begin ClixTrac.com Banner Code -->\r\n<a href=\"https:\/\/clixtrac.com\/goto\/?308404\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/clixtrac.com\/banner\/308404.jpg\" alt=\"Free from food\" title=\"Free from food\" border=\"0\" \/><\/a>\r\n<!--End ClixTrac.com Banner Code --><\/li><li><!--Begin ClixTrac.com Banner Code -->\r\n<a href=\"https:\/\/clixtrac.com\/banner\/click.php?banner=302805\" target=\"_blank\" rel=\"noopener\">\r\n<img decoding=\"async\" src=\"https:\/\/clixtrac.com\/banner\/302805.jpg\" alt=\"LUBRIPLATE\" title=\"LUBRIPLATE\" border=\"0\" width=\"120\" height=\"600\" \/><\/a>\r\n<!--End ClixTrac.com Banner Code --><\/li><li><div style=\"margin-left: auto; margin-right: auto; text-align: center; \" id=\"ads-1479184539\"><!--Begin ClixTrac.com Banner Code -->\r\n<a href=\"https:\/\/clixtrac.com\/banner\/click.php?banner=297426\" target=\"_blank\" rel=\"noopener\">\r\n<img decoding=\"async\" width=\"100%\" height=\"auto\" src=\"https:\/\/clixtrac.com\/banner\/297426.jpg\" alt=\"Click here for more information!\" title=\"Click here for more information!\" border=\"0\" \/><\/a>\r\n<!--End ClixTrac.com Banner Code --><\/div><\/li><\/ul><\/div><script>( window.advanced_ads_ready || jQuery( document ).ready ).call( null, function() {var $adsslider147882659 = jQuery( \".ads-slider-147882659\" );$adsslider147882659.on( \"unslider.ready\", function() { jQuery( \"div.custom-slider ul li\" ).css( \"display\", \"block\" ); });$adsslider147882659.unslider({ delay:5000, autoplay:true, nav:false, arrows:false, infinite:true });$adsslider147882659.on(\"mouseover\", function(){$adsslider147882659.unslider(\"stop\");}).on(\"mouseout\", function() {$adsslider147882659.unslider(\"start\");});});<\/script><\/p>\n<\/div><\/section><\/div><div class=\"flex_column av_three_fifth  flex_column_div av-zero-column-padding   avia-builder-el-3  el_after_av_one_fifth  el_before_av_one_fifth  \" style='border-radius:0px; '><section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><p style=\"text-align: center\"><\/p>\n<\/div><\/section><br \/>\n<section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><header class=\"entry-content-header\"><h1 class=\"post-title entry-title\" itemprop=\"headline\">Comminution of nuts for sample analysis<\/h1><span class=\"post-meta-infos\">\/ <span class=\"blog-categories minor-meta\">in <a href=\"https:\/\/fei-online.com\/category\/featured-articles\/\" rel=\"tag\">Featured Articles<\/a> <\/span><\/span><\/header>\n<\/div><\/section><br \/>\n<section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><h3>It is essential for all stakeholders involved in the food production process, that food products and ingredients meet regulated quality standards.<\/h3>\n<p><!--more--><\/p>\n<p>Food safety analyses focus on verifying whether harmful substances like toxins, heavy metals and non-permitted pesticides do not exceed permitted limits. Consumers trust that these limits of harmful substances are not exceeded and therefore that food products being sold are not contaminated.<\/p>\n<\/div><\/section><br \/>\n<div  class='avia-image-container  av-styling-    avia-builder-el-7  el_after_av_textblock  el_before_av_hr  avia-align-center '  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\"  ><div class='avia-image-container-inner'><div class='avia-image-overlay-wrap'><img class='avia_image' src='https:\/\/fei-online.com\/wp-content\/uploads\/sites\/4\/2023\/04\/nuts_1-scaled-e1681207335423.jpg' alt='' title='nuts_1' height=\"480\" width=\"800\"  itemprop=\"thumbnailUrl\"  \/><\/div><\/div><\/div><br \/>\n<div   class='hr hr-default   avia-builder-el-8  el_after_av_image  el_before_av_textblock '><span class='hr-inner ' ><span class='hr-inner-style'><\/span><\/span><\/div><br \/>\n<section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><p>Nuts, in particular, are problematic when it comes to food inspections as the shell gives no clue about whether the core has the adequate quality. The inside may contain fungal spores or toxins which cannot be perceived from the outside.<\/p>\n<p>However, with defined methods, samples of nuts may be tested for their safety. Meticulous sample preparation is a prerequisite for accurate analysis. Sample preparation requires the comminution of nuts with specialised equipment, such as the FRITSCH Cutting Mills.<\/p>\n<p>There are strict regulations regarding the permitted residue level of toxins. In Germany, for example, the mycotoxin maximum residue level regulation applies (MHmV) as of 2 June 1999, which defines the admissible maximum amounts of aflatoxins B1, B2, G1, G2 and M1. In order to match the newer standards to research, in 2004 the maximum residue levels for ochratoxin A in instant coffee, roasted coffee and dried fruit, for deoxynivalenol and zearalenon in food grain, grain products like bread, and bakery products and for fumonisin B1 and B2 in corn, corn products and much more were also implemented. Throughout the EU the regulation (EG) no. 466\/2001 applies, which has since been adapted and improved (up to (EG) no. 856\/2005). The regulations define not only the number of substances and their maximum residue levels, but also the analysis methods and methods of sampling. These are defined in the regulation (EG) no. 401\/2006.<\/p>\n<p>The main problem is that mycotoxins can be distributed differently in a sample and poses the question, is the sample taken incorrect or is the ensuing analysis method performed incorrectly, which will give distorted results.<\/p>\n<h4>Requirements of the sample preparation<\/h4>\n<p>In order to perform an accurate analysis, a representative homogenous sample is necessary. During the entire sample preparation the sample may not be subject to any type of physical or chemical influences. These influences appearing during comminution would otherwise then falsify the results of the analysis. Heat, for example, would make any type of protein structures, like microorganisms, or volatile substances untraceable. Toxins would evaporate due to thermal stress. In addition, extended mechanical strain may not take place, since the fats from the organic cells escape and adhere to other cell constituents in the grinding chamber.<\/p>\n<h4>Optimal air flow<\/h4>\n<p>The FRITSCH Cutting Mills have optimal air flow to ensure an especially high air throughput in the grinding chamber. This helps speed up the comminution process and effectively protects against clogging of the sieve. Cutting Mills are ideal for comminution of soft to medium-hard, brittle, fibrous, tough or temperature-sensitive material. The samples are comminuted by cutting and shearing forces, and the selected sieve cassette determines the final fineness. Various knife geometries and replaceable blades ensure maximum flexibility and durability. Cutting tools of various steel types as well as of hardmetal tungsten carbide can be used for controlling abrasion.<\/p>\n<p>The cutting chamber of the FRITSCH Cutting Mills is designed with minimum dead space and progressive cutting geometry between rotor and fixed knives so the sample is automatically transported and comminuted finer and finer until to the desired final fineness is achieved. The sample cannot collect anywhere as a quick look into the opened grinding chamber will show. This results in very high throughput, small thermal load due to marginal retention period of the sample in the grinding chamber and minimised cleaning effort.<\/p>\n<h4>Detailed sample preparation of nuts<\/h4>\n<p>For a detailed method of sample preparation of nuts according to regulation (EG) No 401\/2006 with tips, approaches and photos of the individual steps download this PDF from FRITSCH.<\/p>\n<p><a href=\"https:\/\/www.fritsch-international.com\/fileadmin\/Redakteur\/Downloads\/Reports_milling\/Foodstuffs\/Comminution_nuts_-_generation_representative_samples.pdf\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/www.fritsch-international.com\/fileadmin\/Redakteur\/Downloads\/Reports_milling\/Foodstuffs\/Comminution_nuts_-_generation_representative_samples.pdf<\/a><\/p>\n<\/div><\/section><br \/>\n<div  class='av-social-sharing-box  avia-builder-el-10  el_after_av_textblock  avia-builder-el-last  av-social-sharing-box-minimal '><div class='av-share-box'><h5 class='av-share-link-description av-no-toc '>Share this<\/h5><ul class='av-share-box-list noLightbox'><li class='av-share-link av-social-link-facebook' ><a target=\"_blank\" aria-label=\"Share on Facebook\" href='https:\/\/www.facebook.com\/sharer.php?u=https:\/\/fei-online.com\/comminution-of-nuts-for-sample-analysis\/&#038;t=Comminution%20of%20nuts%20for%20sample%20analysis' aria-hidden='false' data-av_icon='\ue8f3' data-av_iconfont='entypo-fontello' title='' data-avia-related-tooltip='Share on Facebook' rel=\"noopener\"><span class='avia_hidden_link_text'>Share on Facebook<\/span><\/a><\/li><li class='av-share-link av-social-link-twitter' ><a target=\"_blank\" aria-label=\"Share on Twitter\" href='https:\/\/twitter.com\/share?text=Comminution%20of%20nuts%20for%20sample%20analysis&#038;url=https:\/\/fei-online.com\/?p=11193' aria-hidden='false' data-av_icon='\ue8f1' data-av_iconfont='entypo-fontello' title='' data-avia-related-tooltip='Share on Twitter' rel=\"noopener\"><span class='avia_hidden_link_text'>Share on Twitter<\/span><\/a><\/li><li class='av-share-link av-social-link-whatsapp' ><a target=\"_blank\" aria-label=\"Share on WhatsApp\" href='https:\/\/api.whatsapp.com\/send?text=https:\/\/fei-online.com\/comminution-of-nuts-for-sample-analysis\/' aria-hidden='false' data-av_icon='\uf232' data-av_iconfont='entypo-fontello' title='' data-avia-related-tooltip='Share on WhatsApp' rel=\"noopener\"><span class='avia_hidden_link_text'>Share on WhatsApp<\/span><\/a><\/li><li class='av-share-link av-social-link-linkedin' ><a target=\"_blank\" aria-label=\"Share on LinkedIn\" href='https:\/\/linkedin.com\/shareArticle?mini=true&#038;title=Comminution%20of%20nuts%20for%20sample%20analysis&#038;url=https:\/\/fei-online.com\/comminution-of-nuts-for-sample-analysis\/' aria-hidden='false' data-av_icon='\ue8fc' data-av_iconfont='entypo-fontello' title='' data-avia-related-tooltip='Share on LinkedIn' rel=\"noopener\"><span class='avia_hidden_link_text'>Share on LinkedIn<\/span><\/a><\/li><li class='av-share-link av-social-link-mail' ><a  aria-label=\"Share by Mail\" href='mailto:?subject=Comminution%20of%20nuts%20for%20sample%20analysis&#038;body=https:\/\/fei-online.com\/comminution-of-nuts-for-sample-analysis\/' aria-hidden='false' data-av_icon='\ue805' data-av_iconfont='entypo-fontello' title='' data-avia-related-tooltip='Share by Mail'><span class='avia_hidden_link_text'>Share by Mail<\/span><\/a><\/li><\/ul><\/div><\/div><\/p><\/div><div class=\"flex_column av_one_fifth  flex_column_div av-zero-column-padding   avia-builder-el-11  el_after_av_three_fifth  avia-builder-el-last  \" style='border-radius:0px; 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