On 5-7 June 2023, mycotoxin scientists from renowned institutions presented their latest work on different topics, as varied as occurrence, food safety, toxicology, fungi, and analysis. Olmix participated in this insightful event and selected three communications to be shared in this Myco\u2019News.[\/vc_column_text][\/vc_column_inner][\/vc_row_inner][vc_row_inner equal_height=”yes” content_placement=”middle” column_margin=”50px” column_direction=”default” column_direction_tablet=”default” column_direction_phone=”default” top_padding=”2%” constrain_group_1=”yes” bottom_padding=”2%” text_align=”left” row_position=”default” row_position_tablet=”inherit” row_position_phone=”inherit” overflow=”visible” pointer_events=”all”][vc_column_inner column_padding=”no-extra-padding” column_padding_tablet=”inherit” column_padding_phone=”inherit” column_padding_position=”all” column_element_direction_desktop=”default” column_element_spacing=”default” desktop_text_alignment=”default” tablet_text_alignment=”default” phone_text_alignment=”default” background_color_opacity=”1″ background_hover_color_opacity=”1″ column_backdrop_filter=”none” column_shadow=”none” column_border_radius=”none” column_link_target=”_self” overflow=”visible” gradient_direction=”left_to_right” overlay_strength=”0.3″ width=”1\/1″ tablet_width_inherit=”default” animation_type=”default” bg_image_animation=”none” border_type=”simple” column_border_width=”none” column_border_style=”solid”][image_with_animation image_url=”5868″ image_size=”full” animation_type=”entrance” animation=”None” animation_movement_type=”transform_y” hover_animation=”none” constrain_group_1=”yes” alignment=”” border_radius=”none” box_shadow=”none” image_loading=”default” max_width=”100%” max_width_mobile=”default” margin_top=”20″ margin_bottom=”20″][vc_column_text]\n
Additionally, mealworm larvae metabolize AFB1 in several phase I metabolites, including novel derivates such as monohydroxylated AFB1. Meanwhile, uncertainties remain in regard to the fate of AFB1 in mealworm, since 87% of the ingested toxin remained undetected in the larval body and residue.<\/p>\n
Reference: Maul et al., 2022. 44th Mycotoxin Workshop. Lecture 12, page 38.<\/em>[\/vc_column_text][vc_column_text]\n Results show that the mycotoxin contamination impaired cows\u2019 feed efficiency and decreased milk production (yield and composition). Moreover, when the rumen was acidified, ZEA absorption was not impacted, but the exposure of dairy cows to DON and its metabolites increased.<\/p>\n Reference: Kroon et al., 2022. 44th Mycotox<\/em>in Workshop. Lecture 17, page 44.[\/vc_column_text][nectar_btn size=”small” open_new_tab=”true” button_style=”regular” button_color_2=”Accent-Color” icon_family=”none” text=”Read the testimonial” url=”\/wp-content\/uploads\/2023\/12\/1.TE_.MMIS_.DC_.GAEC-CALMEJANE-PUECH.2022.EN_.V2.pdf” margin_top=”20″ margin_bottom=”20″][vc_column_text]\n Reference: Krska et al., 2022. 44th<\/sup>\u00a0Mycotoxin Workshop. Lecture 30, page 57.<\/i><\/p>\nHealth \/ Exposure session: Short-time exposure to the Fusarium mycotoxins deoxynivalenol and zearalenone in cows fed a diet inducing rumen acidosis, by Regiane R Santos<\/h2>\n[\/vc_column_text][vc_column_text]The rumen microflora has a certain capacity to deactivate some mycotoxins. However, this ability is compromised when the microbial population is affected, e.g. in case of subacute rumen acidosis. The study presented by Santos explored the effects on dairy cows of a natural contamination in deoxynivalenol (DON) and zearalenone (ZEA) in combination with a diet inducing rumen acidification.<\/p>\n
Analysis session: IR spectroscopy combined with LC-MS\/MS analysis for rapid mycotoxin screening, by Stephan Freitag<\/h2>\n[\/vc_column_text][vc_column_text]Infrared (IR) spectroscopy is being explored for rapid detection of mycotoxins, as an attractive alternative to ELISA which can suffer cross-reactivities and requires a lot of consumables. In their work, Freitag and his team assessed that near infrared spectroscopy (NIRS) is more relevant than mid-infrared spectroscopy (MIRS) when it comes to mycotoxin screening. The method is based on chemometrics approach, tracking fungal-induced changes in the samples, and correlated with LC-MS\/MS mycotoxin detection. A model was set up for zearalenone analysis on European corn and now needs to be validated. DON prediction in wheat is also being explored.<\/p>\n