[et_pb_section bb_built=”1″ admin_label=”Sekcia” fullwidth=”on” specialty=”off”][et_pb_fullwidth_slider admin_label=”Prezent\u00e1cia na cel\u00fa \u0161\u00edrku” show_arrows=”on” show_pagination=”on” auto=”off” auto_ignore_hover=”off” parallax=”off” parallax_method=”off” remove_inner_shadow=”off” background_position=”default” background_size=”default” hide_content_on_mobile=”off” hide_cta_on_mobile=”off” show_image_video_mobile=”off” custom_button=”off” button_letter_spacing=”0″ button_use_icon=”default” button_icon_placement=”right” button_on_hover=”on” button_letter_spacing_hover=”0″] [et_pb_slide background_image=”http:\/\/www.oteza.sk\/wp-content\/uploads\/2015\/12\/olej_2.jpg” background_position=”default” background_size=”default” background_color=”#ffffff” alignment=”center” background_layout=”dark” allow_player_pause=”off” header_font_select=”default” body_font_select=”default” custom_button=”off” button_font_select=”default” button_use_icon=”default” button_icon_placement=”right” button_on_hover=”on” heading=”Deacidification and deodorization” custom_css_slide_title=”background-color: rgba(0,0,0,0.33);” use_bg_overlay=”off” use_text_overlay=”off” text_border_radius=”3″ header_font=”||||” body_font=”||||” button_font=”||||” \/] [\/et_pb_fullwidth_slider][\/et_pb_section][et_pb_section bb_built=”1″ admin_label=”Sekcia” fullwidth=”off” specialty=”on”][et_pb_column type=”1_4″][et_pb_sidebar admin_label=”Bo\u010dn\u00fd panel” orientation=”left” area=”et_pb_widget_area_1″ background_layout=”light” remove_border=”off” header_font_size=”18″ body_font_size=”14″ \/][\/et_pb_column][et_pb_column type=”3_4″ specialty_columns=”3″][et_pb_row_inner admin_label=”Riadok”][et_pb_column_inner type=”4_4″ saved_specialty_column_type=”3_4″][et_pb_text admin_label=”Text” background_layout=”light” text_orientation=”left” use_border_color=”off” border_color=”#ffffff” border_style=”solid”]<\/p>\n

Deacidification and deodorization<\/h2>\n

In the process of refining oils and fats, deacidification and deodorization is both a chemical process and a physical process. The difference is in the deacidification (neutralization) step. Alkali neutralization is a chemical process, and the other is physical deacidification.<\/p>\n

Alkali neutralization<\/strong> is a process of chemical action on free fatty acids. Sodium hydroxide is used and free fatty acids are converted to soaps. This method has very negative aspects and is being abandoned, especially in the production of edible oils and fats.<\/p>\n

Disadvantages:<\/strong><\/p>\n

\n
• soaps are emulsifying and oil losses are higher<\/li>\n
• lye causes partial hydrolysis, causing further oil losses<\/li>\n
• soapstock is formed, which needs to be further processed and is of minimal use<\/li>\n
• an alkaline environment generates undesirable oxidative processes affecting stability<\/li>\n
• increased wastewater production<\/li>\n
• contact of lye with edible oil<\/li>\n<\/ul>\n

  Deodorization in this case is a separate step, which takes place in an interrupted or continuous mode (column). The live steam passes through the oil and strips the volatile components. The disadvantage is that the oil is heated to high temperatures for a long time, thereby generating polymers, decomposition products and trans-isomers. Another disadvantage is the high operating costs of steam production and the removal of important antioxidants from the oil.<\/p>\n

  Physical deacidification<\/strong> is a process without the use of chemicals. Free fatty acids are evaporated with or without vapour. Steam allows for both intermittent and continuous methods, and without steam only the continuous method is possible.<\/p>\n

  The disadvantages of the steam process, whether interrupted or continuous, are the same as with deodorization in alkali neutralization – the formation of polymers, decomposing products, trans-isomers, high operating costs for producing the live steam, and removal of antioxidants from oil.<\/p>\n

  Steam-free deacidification and deodorization:\u00a0<\/strong><\/h3>\n

  In a continuous process without the use of steam, deacidification and deodorization is carried out in one step. The process takes place on evaporation residues, i.e without the use of chemicals or live steam. The equipment works on the principle of heating the oil to a temperature of about 200\u00b0C for the shortest possible time. With such a short-term heat load with high temperature under reduced pressure (fine vacuum), there is no undue long-term thermal load on the oil and the oil does not lose antioxidants.<\/p>\n

  Advantages:<\/strong><\/p>\n

  \n
  • low operating temperatures and short exposure time for the thermolabile substance in the absence of oxygen<\/li>\n
  • preservation of valuable biologically and physiologically active substances<\/li>\n
  • increased oxidative and sensory stability of the refined oil<\/li>\n
  • \u00a0the flavour and sensory properties of the oil (light taste of the seed) is preserved<\/li>\n
  • saving on chemicals, no soapstock is created<\/li>\n
  • saving on oil losses<\/li>\n
  • reduced energy intensity of the process, no use of live steam<\/li>\n
  • the process is economically attractive for small-capacity units<\/li>\n<\/ul>\n

    The technology works continuously and is fully automated.<\/p>\n

    Description of the process:<\/h4>\n

    Bleached (or winterized) oil is continuously pumped from the input oil vessel through a heat recuperation and heat exchanger into a drainage condenser where water, gas and volatile matter are removed under vacuum.<\/p>\n

    The drained oil is pumped through the heat exchanger and the degassing system to the distillation apparatus. In the degassing system, under vacuum, water residues, other volatile substances and bonded gas from the oil are removed prior to entering the condensation divider.<\/p>\n

    The volatile elements are partially removed in proportion to the pressure and temperature. These substances must not enter the molecular condensates.<\/p>\n

    Fatty acids and aromatics with undesirable sensory effects are removed from the condensate.<\/p>\n

    The oil is then pumped from the equalizing vessel through the recuperative heat exchanger. After cooling and filtration, the oil continues into the storage tanks.<\/p>\n

    [\/et_pb_text][\/et_pb_column_inner][\/et_pb_row_inner][et_pb_row_inner admin_label=”Riadok”][et_pb_column_inner type=”1_2″ saved_specialty_column_type=”3_4″][et_pb_text admin_label=”Text” background_layout=”light” text_orientation=”left” use_border_color=”off” border_color=”#ffffff” border_style=”solid”]<\/p>\n

    Deodorising column – line for production of edible oil, capacity 150 t\/day, Belarus<\/h5>\n

    [\/et_pb_text][et_pb_gallery admin_label=”Gallery” gallery_ids=”385″ fullwidth=”on” show_title_and_caption=”on” show_pagination=”on” background_layout=”light” auto=”off” hover_overlay_color=”rgba(255,255,255,0.9)” use_border_color=”off” border_color=”#ffffff” border_style=”solid” auto_speed=”4000″ orientation=”landscape” \/][\/et_pb_column_inner][et_pb_column_inner type=”1_2″ saved_specialty_column_type=”3_4″][et_pb_text admin_label=”Text” background_layout=”light” text_orientation=”left” use_border_color=”off” border_color=”#ffffff” border_style=”solid”]<\/p>\n

    Consender for deacidification of oil – line for production of edible oil, capacity 10 000 t\/year, Croatia<\/h5>\n

    [\/et_pb_text][et_pb_gallery admin_label=”Gallery” gallery_ids=”381,382,383,384″ fullwidth=”on” show_title_and_caption=”on” show_pagination=”on” background_layout=”light” auto=”off” hover_overlay_color=”rgba(255,255,255,0.9)” use_border_color=”off” border_color=”#ffffff” border_style=”solid” auto_speed=”4000″ orientation=”landscape” \/][\/et_pb_column_inner][\/et_pb_row_inner][\/et_pb_column][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"

    Deacidification and deodorization In the process of refining oils and fats, deacidification and deodorization is both a chemical process and a physical process. The difference is in the deacidification (neutralization) step. Alkali neutralization is a chemical process, and the other is physical deacidification. Alkali neutralization is a process of chemical action on free fatty acids. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":998,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"

    Odkyslenie a deodoriz\u00e1cia<\/h2>

    Zariadenie pracuje na princ\u00edpe odkyslenia oleja pri vysok\u00fdch teplot\u00e1ch za p\u00f4sobenia zn\u00ed\u017een\u00e9ho tlaku.<\/strong>
    Vstupn\u00fd olej do technol\u00f3gie je vybielen\u00fd. Olej zhroma\u017eden\u00fd v n\u00e1dobe po bielen\u00ed je pre\u010derp\u00e1van\u00fd \u010derpadlom cez vykurovac\u00ed v\u00fdmenn\u00edk tepla odkia\u013e ohriaty vstupuje do odvod\u0148ovacej n\u00e1doby, kde pod vplyvom v\u00e1kua sa odstr\u00e1ni z oleja voda. \u010ealej je olej pre\u010derp\u00e1van\u00fd cez rekupera\u010dn\u00fd v\u00fdmenn\u00edk do ohrievacej n\u00e1doby, kde pod vplyvom v\u00e1kuu odstra\u0148ujeme zvy\u0161ky vody z oleja pred vstupom do dezodoriza\u010dnej kol\u00f3ny, kde z oleja odstr\u00e1nime mastn\u00e9 kyseliny a pachy. Odkyslen\u00fd olej pre\u010derp\u00e1vame s vyrovn\u00e1vacej n\u00e1doby cez rekupera\u010dn\u00fd v\u00fdmenn\u00edk tepla, kde odovzd\u00e1 teplo vstupn\u00e9mu oleju. Olej po filtrovan\u00ed pokra\u010duje do skladov\u00fdch z\u00e1sobn\u00edkov.<\/p>","_et_gb_content_width":""},"yoast_head":"\n