{"id":10095,"date":"2022-10-13T13:40:44","date_gmt":"2022-10-13T10:40:44","guid":{"rendered":"https:\/\/blogit.lab.fi\/labfocus\/?p=10095"},"modified":"2023-09-28T07:27:31","modified_gmt":"2023-09-28T04:27:31","slug":"voisiko-koivun-mahla-korvata-kookosveden","status":"publish","type":"post","link":"https:\/\/blogit.lab.fi\/labfocus\/voisiko-koivun-mahla-korvata-kookosveden\/","title":{"rendered":"Voisiko koivun mahla korvata kookosveden?"},"content":{"rendered":"\n<p>Kuluttajien kiinnostus puuvesi\u00e4 kohtaan on lis\u00e4\u00e4ntynyt viime vuosina. Voisiko koivun mahla korvata kookosveden?<\/p>\n\n\n\n<p>Koivun mahla alkaa virrata heti, kun maa alkaa sulaa. Mahla sis\u00e4lt\u00e4\u00e4 puun varastoimia ravintoaineita, joita se tarvitsee kasvunsa k\u00e4ynnist\u00e4miseen kev\u00e4\u00e4ll\u00e4 ennen kuin yhteytt\u00e4minen lehdiss\u00e4 alkaa. Mahla sis\u00e4lt\u00e4\u00e4 99 % vett\u00e4, jota koivun juuristo ottaa maaper\u00e4st\u00e4. Veden lis\u00e4ksi mahla sis\u00e4lt\u00e4\u00e4 pieni\u00e4 m\u00e4\u00e4ri\u00e4 sokereita, hivenaineita, hedelm\u00e4- ja aminohappoja. Mahlaa on pidetty hyv\u00e4n\u00e4 palautusjuomana ja kansanperim\u00e4tiedon mukaan sill\u00e4 on monia terveytt\u00e4 edist\u00e4vi\u00e4 vaikutuksia (Pirinen 2018, 229). Mahlaa k\u00e4ytet\u00e4\u00e4n my\u00f6s monien juomien ja kosmetiikan raaka-aineena.<\/p>\n\n\n\n<p>Koivun mahlaa voidaan valuttaa aikaisin kev\u00e4\u00e4ll\u00e4 huhti-toukokuussa. Koivun kylkeen porataan 3-5 cm syv\u00e4 reik\u00e4, johon ker\u00e4ysletku kiinnitet\u00e4\u00e4n ja mahla johdetaan ker\u00e4ysastiaan. Koivikkoon voidaan tehd\u00e4 my\u00f6s putkituslinjastoja, joilla voidaan ker\u00e4ysm\u00e4\u00e4r\u00e4\u00e4 tuntuvasti kasvattaa. Mahlan valutuksessa hygieniaan on syyt\u00e4 kiinnitt\u00e4\u00e4 erityisesti huomiota.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/blogit.lab.fi\/labfocus\/wp-content\/uploads\/sites\/8\/2022\/10\/411_2022_Voisiko-koivun-mahla-korvata-kookosveden_K1-1024x512.jpg\" alt=\"Koivun runkoja kev\u00e4isess\u00e4 mets\u00e4ss\u00e4\" class=\"wp-image-10096\" srcset=\"https:\/\/blogit.lab.fi\/labfocus\/wp-content\/uploads\/sites\/8\/2022\/10\/411_2022_Voisiko-koivun-mahla-korvata-kookosveden_K1-1024x512.jpg 1024w, https:\/\/blogit.lab.fi\/labfocus\/wp-content\/uploads\/sites\/8\/2022\/10\/411_2022_Voisiko-koivun-mahla-korvata-kookosveden_K1-300x150.jpg 300w, https:\/\/blogit.lab.fi\/labfocus\/wp-content\/uploads\/sites\/8\/2022\/10\/411_2022_Voisiko-koivun-mahla-korvata-kookosveden_K1-768x384.jpg 768w, https:\/\/blogit.lab.fi\/labfocus\/wp-content\/uploads\/sites\/8\/2022\/10\/411_2022_Voisiko-koivun-mahla-korvata-kookosveden_K1-570x285.jpg 570w, https:\/\/blogit.lab.fi\/labfocus\/wp-content\/uploads\/sites\/8\/2022\/10\/411_2022_Voisiko-koivun-mahla-korvata-kookosveden_K1.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Kuva 1. Kev\u00e4inen koivikko. (Kuva: Andrew Strong)<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Mahlan s\u00e4ilyvyyden parantaminen<\/h2>\n\n\n\n<p>Koivun mahlan k\u00e4ytt\u00f6\u00e4 rajoittaa sen nopea pilaantuminen. Mahlan s\u00e4ilyvyytt\u00e4 on pyritty parantamaan erilaisilla k\u00e4sittelyill\u00e4. Past\u00f6rointi olisi yksinkertainen menetelm\u00e4 s\u00e4ilyvyyden parantamiseen, mutta se valitettavasti muuttaa mahlan makua (Arktiset Aromit 2022). Menetelmi\u00e4, jotka eiv\u00e4t vaikuta mahlan ominaisuuksiin ovat mm. UV-sterilointi, ultra\u00e4\u00e4nik\u00e4sittely, korkeapainek\u00e4sittely ja mikrosuodatus (Bilek ym. 2018). LAB-ammattikorkeakoulussa on Mahla- koivun eliksiirist\u00e4 lis\u00e4arvoa maaseudulle -hankkeessa tutkittu UV-steriloinnin vaikutusta mahlan s\u00e4ilyvyyteen (LAB 2021). <br><a href=\"https:\/\/lab.fi\/fi\/projekti\/mahla\" target=\"_blank\" rel=\"noreferrer noopener\">Linkki Mahla- koivun eliksiirist\u00e4 lis\u00e4arvoa maaseudulle -projektin sivuille.<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Mahlan konsentrointi<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/blogit.lab.fi\/labfocus\/wp-content\/uploads\/sites\/8\/2022\/10\/411_2022_Voisiko-koivun-mahla-korvata-kookosveden_K2-1024x512.jpg\" alt=\"Laboratoriotilassa WatManin RO-laitteisto, jossa on pumppu sek\u00e4 n. 1,5 m korkea k\u00e4\u00e4nteisosmoosipatruuna, johon liitetty muoviputkia mahlan virtaukselle ja painemittareita\" class=\"wp-image-10097\" srcset=\"https:\/\/blogit.lab.fi\/labfocus\/wp-content\/uploads\/sites\/8\/2022\/10\/411_2022_Voisiko-koivun-mahla-korvata-kookosveden_K2-1024x512.jpg 1024w, https:\/\/blogit.lab.fi\/labfocus\/wp-content\/uploads\/sites\/8\/2022\/10\/411_2022_Voisiko-koivun-mahla-korvata-kookosveden_K2-300x150.jpg 300w, https:\/\/blogit.lab.fi\/labfocus\/wp-content\/uploads\/sites\/8\/2022\/10\/411_2022_Voisiko-koivun-mahla-korvata-kookosveden_K2-768x384.jpg 768w, https:\/\/blogit.lab.fi\/labfocus\/wp-content\/uploads\/sites\/8\/2022\/10\/411_2022_Voisiko-koivun-mahla-korvata-kookosveden_K2-570x285.jpg 570w, https:\/\/blogit.lab.fi\/labfocus\/wp-content\/uploads\/sites\/8\/2022\/10\/411_2022_Voisiko-koivun-mahla-korvata-kookosveden_K2.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Kuva 2. RO-laitteisto LAB:n laboratoriossa. (Kuva: Heidi Rutila)<\/figcaption><\/figure>\n\n\n\n<p>Mahlan maku on hyvin mieto, koska se sis\u00e4lt\u00e4\u00e4 runsaasti vett\u00e4. Mahlan jatkojalostajat olisivat eritt\u00e4in kiinnostuneita saamaan mahlaa k\u00e4ytt\u00f6\u00f6ns\u00e4 konsentroidummassa muodossa. LAB-ammattikorkeakoulussa testataan k\u00e4\u00e4nteisosmoosia (RO Reverse Osmosis) mahlan konsentrointiin (Kuva 1). K\u00e4\u00e4nteisosmoosissa pakotetaan vesi virtaamaan paineen avulla tihe\u00e4n kalvon l\u00e4pi. Mahlan hyv\u00e4t ravintoaineet saadaan j\u00e4\u00e4m\u00e4\u00e4n kalvon toiselle puolelle konsentraattiin. T\u00e4ll\u00e4 menetelm\u00e4ll\u00e4 pystyt\u00e4\u00e4n mahlan kuiva-ainepitoisuus kaksinkertaistamaan poistamalla vett\u00e4 mahlasta (Wawer ym. 2018).<\/p>\n\n\n\n<p>LABin konsentrointikokeessa pystyttiin mahlasta poistamaan n. 80 % vedest\u00e4. Prosessin kehittely jatkuu edelleen.<\/p>\n\n\n\n<p class=\"has-background\" style=\"background-color:#b3edfb\">Kirjoittaja<br><br><strong>Heidi Rutila<\/strong> ty\u00f6skentelee LUMA-aineiden lehtorina LAB-ammattikorkeakoulun tekniikan yksik\u00f6ss\u00e4 ja on kiinnostunut biotalouden kehitt\u00e4misest\u00e4.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">L\u00e4hteet<\/h3>\n\n\n\n<p>Arktiset Aromit. 2022. Erikoisluonnontuotteet &#8211; Mahla. Viitattu 13.10.2022. Saatavissa <a href=\"https:\/\/www.arktisetaromit.fi\/fi\/erikoisluonnontuotteet\/mahla\/\">https:\/\/www.arktisetaromit.fi\/fi\/erikoisluonnontuotteet\/mahla\/<\/a><\/p>\n\n\n\n<p>Bilek, M., Cebula E., Krupa, K.,&nbsp;Lorenc, K.,&nbsp; Adamowicz, T.&nbsp;&amp;&nbsp; Sosnowski, S. 2018. New technologies for extending shelf life of birch tree sap. ECONTECHMOD. AN INTERNATIONAL QUARTERLY JOURNAL. Vol. 7(4), 3 \u2013 8. Viitattu 30.5.2022. Saatavissa <a href=\"https:\/\/bibliotekanauki.pl\/articles\/411095\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/bibliotekanauki.pl\/articles\/411095<\/a><\/p>\n\n\n\n<p>LAB. 2021. Mahla \u2013 koivun eliksiirist\u00e4 lis\u00e4arvoa maaseudulle Viitattu 30.5.2022. Saatavissa <a href=\"https:\/\/lab.fi\/fi\/projekti\/mahla\">https:\/\/lab.fi\/fi\/projekti\/mahla<\/a><\/p>\n\n\n\n<p>Pirinen, Heli (toim.). 2019. Luonnontuoteopas. Toimintaymp\u00e4rist\u00f6, ty\u00f6skentely ja tuotteistaminen luonnontuotealalla. 1. painos. Helsinki: Opetushallitus.<\/p>\n\n\n\n<p>Wawer, J., Bilek, M. &amp; Sosnowski, S. 2018. The energy consumption during the birch tree sap concentration process using the reverse osmosis system. ECONTECHMOD. AN INTERNATIONAL QUARTERLY JOURNAL. Vol. 07 (1), 151\u2013155<strong>.&nbsp;<\/strong>Viitattu 13.10.2022. Saatavissa <a href=\"https:\/\/bibliotekanauki.pl\/articles\/410787\">https:\/\/bibliotekanauki.pl\/articles\/410787<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Linkit<\/h3>\n\n\n\n<p>Linkki 1. LAB. 2021. Mahla <a>\u2013 koivun eliksiirist\u00e4 lis\u00e4arvoa maaseudulle <\/a>Viitattu 30.5.2022. Saatavissa <a href=\"https:\/\/lab.fi\/fi\/projekti\/mahla\">https:\/\/lab.fi\/fi\/projekti\/mahla<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Kuluttajien kiinnostus puuvesi\u00e4 kohtaan on lis\u00e4\u00e4ntynyt viime vuosina. Voisiko koivun mahla korvata kookosveden? Koivun mahla alkaa virrata heti, kun maa alkaa sulaa. Mahla sis\u00e4lt\u00e4\u00e4 puun varastoimia ravintoaineita, joita se tarvitsee kasvunsa k\u00e4ynnist\u00e4miseen kev\u00e4\u00e4ll\u00e4 ennen kuin yhteytt\u00e4minen lehdiss\u00e4 alkaa. Mahla sis\u00e4lt\u00e4\u00e4 99 % vett\u00e4, jota koivun juuristo ottaa maaper\u00e4st\u00e4. Veden lis\u00e4ksi mahla sis\u00e4lt\u00e4\u00e4 pieni\u00e4 m\u00e4\u00e4ri\u00e4 sokereita, [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":10096,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7519,23],"tags":[29,2457,2459],"class_list":{"0":"post-10095","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-bioperaiset-materiaalikierrot","8":"category-circular-economy_fi","9":"tag-artikkeli-e1","10":"tag-biotalous","11":"tag-mahla","12":"czr-hentry"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Voisiko koivun mahla korvata kookosveden? - LAB Focus<\/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:\/\/blogit.lab.fi\/labfocus\/voisiko-koivun-mahla-korvata-kookosveden\/\" \/>\n<meta property=\"og:locale\" content=\"fi_FI\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Voisiko koivun mahla korvata kookosveden? - LAB Focus\" \/>\n<meta property=\"og:description\" content=\"Kuluttajien kiinnostus puuvesi\u00e4 kohtaan on lis\u00e4\u00e4ntynyt viime vuosina. Voisiko koivun mahla korvata kookosveden? Koivun mahla alkaa virrata heti, kun maa alkaa sulaa. Mahla sis\u00e4lt\u00e4\u00e4 puun varastoimia ravintoaineita, joita se tarvitsee kasvunsa k\u00e4ynnist\u00e4miseen kev\u00e4\u00e4ll\u00e4 ennen kuin yhteytt\u00e4minen lehdiss\u00e4 alkaa. Mahla sis\u00e4lt\u00e4\u00e4 99 % vett\u00e4, jota koivun juuristo ottaa maaper\u00e4st\u00e4. Veden lis\u00e4ksi mahla sis\u00e4lt\u00e4\u00e4 pieni\u00e4 m\u00e4\u00e4ri\u00e4 sokereita, [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogit.lab.fi\/labfocus\/voisiko-koivun-mahla-korvata-kookosveden\/\" \/>\n<meta property=\"og:site_name\" content=\"LAB Focus\" \/>\n<meta property=\"article:published_time\" content=\"2022-10-13T10:40:44+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-09-28T04:27:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blogit.lab.fi\/labfocus\/wp-content\/uploads\/sites\/8\/2022\/10\/411_2022_Voisiko-koivun-mahla-korvata-kookosveden_K1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1280\" \/>\n\t<meta property=\"og:image:height\" content=\"640\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"riagynther\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@LABfinland\" \/>\n<meta name=\"twitter:site\" content=\"@LABfinland\" \/>\n<meta name=\"twitter:label1\" content=\"Kirjoittanut\" \/>\n\t<meta name=\"twitter:data1\" content=\"riagynther\" \/>\n\t<meta name=\"twitter:label2\" content=\"Arvioitu lukuaika\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minuuttia\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/blogit.lab.fi\\\/labfocus\\\/voisiko-koivun-mahla-korvata-kookosveden\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/blogit.lab.fi\\\/labfocus\\\/voisiko-koivun-mahla-korvata-kookosveden\\\/\"},\"author\":{\"name\":\"riagynther\",\"@id\":\"https:\\\/\\\/blogit.lab.fi\\\/labfocus\\\/#\\\/schema\\\/person\\\/9c880332f36e75c138451ec4aa8eadc7\"},\"headline\":\"Voisiko koivun mahla korvata kookosveden?\",\"datePublished\":\"2022-10-13T10:40:44+00:00\",\"dateModified\":\"2023-09-28T04:27:31+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/blogit.lab.fi\\\/labfocus\\\/voisiko-koivun-mahla-korvata-kookosveden\\\/\"},\"wordCount\":483,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/blogit.lab.fi\\\/labfocus\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/blogit.lab.fi\\\/labfocus\\\/voisiko-koivun-mahla-korvata-kookosveden\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/blogit.lab.fi\\\/labfocus\\\/wp-content\\\/uploads\\\/sites\\\/8\\\/2022\\\/10\\\/411_2022_Voisiko-koivun-mahla-korvata-kookosveden_K1.jpg\",\"keywords\":[\"Artikkeli E1\",\"Biotalous\",\"Mahla\"],\"articleSection\":[\"Bioper\u00e4iset materiaalikierrot\",\"Circular Economy\"],\"inLanguage\":\"fi\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/blogit.lab.fi\\\/labfocus\\\/voisiko-koivun-mahla-korvata-kookosveden\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/blogit.lab.fi\\\/labfocus\\\/voisiko-koivun-mahla-korvata-kookosveden\\\/\",\"url\":\"https:\\\/\\\/blogit.lab.fi\\\/labfocus\\\/voisiko-koivun-mahla-korvata-kookosveden\\\/\",\"name\":\"Voisiko koivun mahla korvata kookosveden? 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