{"id":3662,"date":"2023-04-04T12:47:42","date_gmt":"2023-04-04T09:47:42","guid":{"rendered":"https:\/\/ancadanielaraiciu.ro\/w\/?p=3662"},"modified":"2023-04-04T12:47:42","modified_gmt":"2023-04-04T09:47:42","slug":"o-alga-pretioasa-laminaria","status":"publish","type":"post","link":"https:\/\/ancadanielaraiciu.ro\/w\/o-alga-pretioasa-laminaria\/","title":{"rendered":"O ALG\u0102 PRE\u021aIOAS\u0102-LAMINARIA"},"content":{"rendered":"<img decoding=\"async\" loading=\"lazy\" src=\"https:\/\/ancadanielaraiciu.ro\/w\/wp-content\/uploads\/2023\/04\/istockphoto-1457611333-170667a.jpg\" alt=\"\" width=\"509\" height=\"339\" class=\"size-full wp-image-3665\" srcset=\"https:\/\/ancadanielaraiciu.ro\/w\/wp-content\/uploads\/2023\/04\/istockphoto-1457611333-170667a.jpg 509w, https:\/\/ancadanielaraiciu.ro\/w\/wp-content\/uploads\/2023\/04\/istockphoto-1457611333-170667a-300x200.jpg 300w, https:\/\/ancadanielaraiciu.ro\/w\/wp-content\/uploads\/2023\/04\/istockphoto-1457611333-170667a-90x60.jpg 90w\" sizes=\"(max-width: 509px) 100vw, 509px\" \/>\n<p>Alga laminaria(Laminaria cloustoni, digitata, hyperboreea),Fam Laminariaceae este o alg\u0103 brun\u0103, fixat\u0103 cu ajutorul unor crampoane, asem\u0103n\u0103toare r\u0103d\u0103cinilor. Urmeaz\u0103 o pseudotulpin\u0103 cilindric\u0103 (stip) \u00een partea superioar\u0103 se continu\u0103 cu o lamina foliacee.<br \/>\nSuprafa\u021ba stipului  este brun\u0103-cenu\u0219ie,sau negricioas\u0103, cu striuri longitudinale \u0219i o inflorescen\u021b\u0103 albicioas\u0103 datorit\u0103 s\u0103rurilor \u0219i manitei care cristalizeaz\u0103 la suprafa\u021ba lui.<br \/>\nAlga laminaria cre\u0219te pe malurile st\u00e2ncoase din Marea Nordului, pe litoralul Norvegiei, p\u00e2n\u0103 \u00een Oceanul \u00cenghe\u021bat de Nord.<br \/>\nLaminaria saccharina se recolteaz\u0103 din Marea Alb\u0103, iar, Laminaria japonica se g\u0103se\u0219te \u00een Oceanul Pacific.<br \/>\nLaminaria con\u021bine aproximativ 60% substan\u021be mucilaginoase \u00een care predomin\u0103 algina sub form\u0103 de algina\u021bi, adic\u0103 s\u0103rurile acidului polimanuronic, care variaz\u0103 \u00eentre 18-28%, con\u021bine p\u00e2n\u0103 la 20% fucoidin\u0103 (molecule de fucoz\u0103 esterificate cu acid sulfuric),manit\u0103, vitaminele A \u0219i C, s\u0103ruri de Ca, Mg, Na,precum \u0219i Pb, Br, I, sub form\u0103 de s\u0103ruri organice,dup\u0103 calcinare las\u0103 14% cenu\u0219\u0103.<br \/>\nDin punct de vedere  farmacologic algele pu\u021bin pulverizate, asociate cu scoar\u021b\u0103 de Cru\u0219in (Frangula), sunt utilizate ca laxativ u\u0219or.<br \/>\n\u00cen industrie, alga laminaria se utilizeaz\u0103 ca materie prim\u0103 pentru extragerea algina\u021bilor, care au  o larg\u0103 utilizare.<br \/>\nAlgina\u021bii sunt s\u0103rurile acidului alginic, frecvent se utilizeaz\u0103 s\u0103rurile solubile de sodiu,potasiu \u0219i amoniu care \u00een dilu\u021bie de 4% dau solu\u021bii v\u00e2scoase \u0219i care prin \u00eenc\u0103lzire nu se coaguleaz\u0103.<br \/>\nPentru extragerea algina\u021biilor, \u00een afar\u0103 de speciile de laminaria se folosesc \u0219i algele brune. \u00cen acest scop, algele se spal\u0103 cu acid clorhidric diluat, se fragmenteaz\u0103, apoi se fierb cu o solu\u021bie diluat\u0103 de carbonat de sodiu pentru ob\u021binerea algina\u021bilor de sodiu solubili. Pentru purificare se precipit\u0103 cu clorur\u0103 de calciu, algina\u021bii rezulta\u021bi se descompun din nou cu acid clorhidric \u0219i se solubilizeaz\u0103 cu hidroxizi alcalini.<br \/>\nAlgina\u021bii de sodiu, potasiu \u0219i amoniu sunt folosi\u021bi la prepararea unguentelor ca agen\u021bi stabilizatori ai emulsiilor \u0219i suspensiilor \u0219i la prepararea tabletelor \u0219i granulelor. \u00cen industrie servesc la apretarea produselor textile.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Alga laminaria(Laminaria cloustoni, digitata, hyperboreea),Fam Laminariaceae este o alg\u0103 brun\u0103, fixat\u0103 cu ajutorul unor crampoane, asem\u0103n\u0103toare r\u0103d\u0103cinilor. Urmeaz\u0103 o pseudotulpin\u0103 cilindric\u0103 (stip) \u00een partea superioar\u0103 se continu\u0103 cu o lamina &hellip; <\/p>\n","protected":false},"author":3,"featured_media":3663,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[6,26],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ancadanielaraiciu.ro\/w\/wp-json\/wp\/v2\/posts\/3662"}],"collection":[{"href":"https:\/\/ancadanielaraiciu.ro\/w\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ancadanielaraiciu.ro\/w\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ancadanielaraiciu.ro\/w\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/ancadanielaraiciu.ro\/w\/wp-json\/wp\/v2\/comments?post=3662"}],"version-history":[{"count":3,"href":"https:\/\/ancadanielaraiciu.ro\/w\/wp-json\/wp\/v2\/posts\/3662\/revisions"}],"predecessor-version":[{"id":3667,"href":"https:\/\/ancadanielaraiciu.ro\/w\/wp-json\/wp\/v2\/posts\/3662\/revisions\/3667"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ancadanielaraiciu.ro\/w\/wp-json\/wp\/v2\/media\/3663"}],"wp:attachment":[{"href":"https:\/\/ancadanielaraiciu.ro\/w\/wp-json\/wp\/v2\/media?parent=3662"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ancadanielaraiciu.ro\/w\/wp-json\/wp\/v2\/categories?post=3662"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ancadanielaraiciu.ro\/w\/wp-json\/wp\/v2\/tags?post=3662"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}