Deleng sumberé Alginat

{{chembox
|ImageFile=Alginsäure.svg
|ImageSize=250px
|IUPACName=
|OtherNames=Alginic acid
|OtherNames = E400
|Section1= {{Chembox Identifiers
| CASNo=9005-32-7
| EINECS=232-680-1
| ATCCode_prefix = A02
| ATCCode_suffix = BX13
| PubChem=
| SMILES=
 }}
|Section2= {{Chembox Properties
| Formula=(C<sub>6</sub>H<sub>8</sub>O<sub>6</sub>)<sub>n</sub>
| MolarMass=10,000 - 600,000
| Appearance= putih nganti kuning, fibrous powder
| Density= 1.601 g/cm<sup>3</sup>
| MeltingPt=
| BoilingPt=
| Solubility=
| pKa = 1.5-3.5
 }}
|Section3= {{Chembox Hazards
| MainHazards=
| FlashPt=
| Autoignition=
 }}
}}

'''Alginat''' ya iku [[polimer]] linier organik polisakarida kang kasusun saka monomer α-L asem guluronat (G) lan β-D asem manuronat (M), utawa bisa wujud kombinasi saka rong monomer mau.<ref name=roe>Roew, Raymond. 2009. Adipic Acid. ''Handbook of Pharmaceutical Excipients''. Hal. 11–12.</ref> Alginat ana ing ganggang coklat kang asalé génus ''Ascophyllum'', ''Ecklonia'', ''Durvillaea'', ''Laminaria'', ''Lessonia'', ''Macrocystis'', ''Sargassum'', dan ''Turbinaria''.<ref name=roe/>

== Struktur ==
Struktur dhasar saka monomer alginat ya iku ali-ali [[tetrahydopyran]] kang bisa mbentuk 2 konfigurasi, ya iku C1 lan 1C kaya ta gambar ing dhuwur.<ref name=pen/> β -D-manuronat ing alam ana ing konfigurasi C1.<ref name=pen/> Ing konfigurasi 1C α-D-manuronat, interaksi -COOH ing C-5 lan -OH ing C-3 bakal kaku, déné ing C1 gugus-gugus iki ana ing posisi ekuatorial mula luwih stabil.<ref name=pen/> Sewalike, kanggo alasan kang pada α -L-guluronat ana ing konfigurasi 1C dibandingake C1.<ref name=pen>Penman A, Sanderson GR. 1972. A method for the determination of uronic acid sequence in alginates. ''Carbohydr.Res.'' 25:280</ref>

Polimer alginat diwangun saka gayutan antarané C-1 lan C-4 tiap [[monomer]] lan dihubungake déning ikatan eter [[oksigèn]].<ref name=pen/> Polimer alginat kapérang saka 3 jinis, ya iku polimer M (manuronat), polimer G (guluronat), lan polimer MG.<ref name=fao/> Polimer M diwangun saka struktur ekuatorial gugus C-1 lan C-4 lan mbentuk polimer lurus, déné polimer G diwangun saka struktur aksial.<ref name=fao/> Perbedaan struktur polimer iki nyebabake polimer G luwih akèh minangka prosès mbentuk gel alginat kanthi nambahake ion Ca2+.<ref name=fao/> Ion mau bakal ngganteake ion H+ ing gugus karboksilat lan mbentuk kreteg ion penghubung antarané polimer G siji karo sijiné.<ref name=fao/> Hubungan antarané polimer G iki bakal mbentuk struktur egg-box.<ref name=fao>[FAO]. 2009. ''Production, properties, amd use of alginate'' [terhubung berkala]. http://www.fao.org/docrep/X5822E/x5822e04{{Pranala mati|date=September 2023 |bot=InternetArchiveBot |fix-attempted=yes }} [4 Mar 2009].</ref>

== Cathetan sikil ==
{{reflist}}

== Pranala njaba ==
* [http://www.cybercolloids.net/library/alghistory/seaweeds.php Alginate seaweed sources] {{Webarchive|url=https://web.archive.org/web/20100509215714/http://www.cybercolloids.net/library/alghistory/seaweeds.php |date=2010-05-09 }}
* [http://www.cybercolloids.net/library/alginate/properties.php Alginate properties] {{Webarchive|url=https://web.archive.org/web/20090524054441/http://www.cybercolloids.net/library/alginate/properties.php |date=2009-05-24 }}
* [http://www.wired.com/wired/archive/14.10/start.html?pg=4 article] [[Wired (magazine)|Wired]] on [[Easy Cheese]], describing sodium alginate

[[Kategori:Ilmu pangan]]
[[Kategori:Polisakarida]]
[[Kategori:Dental materials]]
[[Kategori:Zat aditif]]