Practica No 8. DETERNINACION DE VITAMINA A EN AZUCAR FORTIFICADA
August 3, 2022 | Author: Anonymous | Category: N/A
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HEXEPDLDIOLKD HE SLXIMLDI I ED HEXEPDLDIOLKD IWUOIP CKPXLCLOIHI CUDHIMEDXK XEKPLOK 9. K` K`ge getl tlvk vk Ae Aede deri riff Fkarir fi hetermldiolÿd hef trids-retldkf okdkolhk okmk Sltimldi ‖I” ed iz÷oir ckrtlcloihi i trivìs hef mìtkhk Espeotrkcktkmìtrlok. 0. K` K`ge getl tlvk vkss espeoí espeoícl clok okss 9. Pe Peif iflz lzir ir ffi i extr extrio iool olÿd ÿd h hef ef trids-retldkf presedte ed ef iz÷oir, usidhk okmk hlskfvedte ef bexidk. 0. He Hete terml rmldi diol olÿd ÿd he fi okdo okdoed edtr triol iolÿd ÿd he vlti vltiml mldi di I pr pres esedt edte e ed ef iz÷o iz÷oir ir okmerolif (ma/ja).
Fi Sltimldi ‖I” k trids-retldkf Es udi vltimldi flpkskfu`fe que es usihi okmk ud ihltlvk he ckrtlcloiolÿd piri ef iz÷oir okmerolif (sioirksi) y su cÿrmufi químloi es (0)
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Aederiflhihes hef iz÷oir
Ef iz÷oir es ud sÿflhk, orlstiflzihk, okdstltulhk esedolifmedte pkr orlstifes sueftks he sioirksi, k`tedlhks i pirtlr he _ioobirum kccloldirum F (oiùi he iz÷oir) k he fi @eti vufairls F (remkfiobi izuoireri) mehlidte prkoehlmledtks ldhustrlifes iprkplihks. Fi oiùi he iz÷oir okdtlede edtre 2 y 95% he sioirksi: oir`kblhritk he krlaed diturif okmpuestk pkr oir`kdk, kxíaedk e blhrÿaedk. (0)
?.0 Xlpks he iz÷oir y sus usks.
Fks tlpks he izuoires ed ef meroihk skd7 recldk, `fidok y mkredk fks ouifes se lhedtlcloid pkr su arihk he purezi y okfkr sledhk ef recldk ef he miykr purezi y mkredk ef he medkr purezi, ed ef oisk hef okfkr ef mkredk ef he miykr okfkr y ef recldk ef he medkr okfkr. Fks iz÷oires `fidoks skd iflmedtks muy purks okd més hef >), he mideri que ef prkhuotk okdtedai fi oidtlhih sefeoolkdihi he 95 ma he retldkf/ja he iz÷oir. (9)
Fi tìodloi espeotrkcktkmìtrloi se `isi ed fi mehlolÿd he fi I`skr`idoli, fi ouif esté hlreotimedte refiolkdihi okd fi okdoedtriolÿd hef idifltk ldvestlaihk, mehlidte fi slauledte eouiolÿd (Fey he @eer). i `o I`skr` I`skr`idoli idoli (8) I s
=
s
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Hkdhe ` represe represedti dti fi fkdal fkdaltuh tuh (om) hef oimldk ÿptlok edtre fis supercl supercloles oles fímlte he fi hlskfuolÿd (oefhi ÿptloi), i s es ef ídhloe he i`skr`idoli y o represedti fi okdo okdoed edtr trio iolÿ lÿd d (a (a/m /mF) F) he fi hlsk hlskfu fuol olÿd ÿd he iz÷o iz÷oir ir pr prep epir irih ihi i pi piri ri clde cldess he ouidtlcloiolÿd, fi ouif okdffevi udi hlfuolÿd. ^iri expresir fi okdoedtriolÿd he vltimldi I ed ef iz÷oir se utlflzid udlhihes he ma he vltimldi I/ja he iz÷oir. ^iri reiflzir este oéfoufk okdslhere7 (8)
Sltimldi I=
|∜|S b ∜ S L ∜ H ∜ C O κ ∜ ^M Petldkf ε ∜ ` ∜ S iz ∜ m mti ∜ P ∜ ^ M pifmltitkhe Petldkf
Hkdhe oihi efemedtk he fi eouiolÿd expresi7 Efemedt k
Okdoeptk
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I`skr`idoli i fkdaltuh he kdhi ?05 dm
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Sb
Skfumed he fi cise kraédloi (mF)
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Skfumed ldlolif he fi muestri (mF)
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Hlfuolÿd (5/9>)
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Ciotkr he okrreoolÿd he fkdaltuh he kdhi
9.>>1
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Sifkr
Okec Okeclo lole ledt dte eh he eI I`s `skr krttlvlh lvlhih ih he heff ^ ^if ifml mlttitk itk h he e rret etld ldkf kf (ζa (ζa - >.>
mmti
Misi he fi muestri ed (a)
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Espeskr he fi oefhi (om)
9
Ed resumed fi eouiolÿd quehiríi he fi slauledte mideri7 Sltimldi I (ma/Ja he iz÷oir) = 8 y 12> dm) pkr udi mkfìoufi. Fi i`skrolÿd he esti rihliolÿd oiusi fi prkmkolÿd he ud efeotrÿd i ud estihk exoltihk. Fks efeotrkdes que se exoltid if i`skr`er rihliolÿd he esti creouedoli skd fks efeotrkdes he edfioe he fis mkfìoufis, pkr fk que fks ploks he i`skrolÿd se puehed okrrefiolkdir okd fks hlstldtks tlpks he edfioe presedtes ed ef okmpuestk. He`lhk i effk, fi espeotrksokpíi US-Sls se utlflzi piri fi lhedtlcloiolÿd he fks arupks cudolkdifes presedtes ed udi mkfìoufi. Fis `idhis que ipireoed ed ud espeotrk US-Sls skd idobis he`lhk i fi superpkslolÿd he tridslolkdes vl`riolkdifes y efeotrÿdlois.(3) Fi espeotrksokpíi DLP esti `isihi ed fi i`skrolÿd he fi rihliolÿd i fkdaltuhes he kdhi edtre 2>> y 01>>dm. Ed esti zkdi hef espeotrk efeotrkmiadìtlok ef prkoesk he i`skrolÿd es he`lhk i presedoli he sk`retkdks y `idhis he okm`ldiolÿd krlaldihks pkr tridslolkdes vl`riolkdifes ldtedsis que se prkhuoed i fkdaltuhes he kdhi miykres.(3) Fks espeotrks DLP estéd hkmldihks pkr fi presedoli he `idhis idobis he `igi ldtedslhih fk que restrldae su usk i muestris sÿflhis y fíqulhis. _e usi prldolpifmedte ed idéflsls mehlkim`ledtif, cirmioìutlok y he iflmedtks, isí okmk ed fi ldhustrli he pkfímerks y pféstloks.(3)
03 HE HLOLEM@PE 0>93 AIOEXI HE BKDHUPI_ BKDHUPI_ ?8000 IOUEPHI ^PLMEPK7 Iprk`ir ef PEAFIMEDXK XÌODLOK BKDHUPEÙK IFLMEDXK_ \ @E@LHI_. CKPXLCLOIOLßD HE IW×OIP OKD SLXIMLDI I ldterdk he fi premezofi he Iz÷oir okd vltimldi I (Iseaurimledtk he oiflhih y okdtrkf he oiflhih, IO/OO) Fi ihlolÿd he fi vltimldi ‖I” if iz÷oir se he`e bioer ed ckrmi he udi premezofi bkmkaìdei okdstltulhi pkr pifmltitk he retldkf (blhrkhlspersi`fe), ud iaedte iafutldidte, ud iaedte idtlkxlhidte y iz÷oir. Fi premezofi he`e okdteder udi okdoedtriolÿd he 5>,>>> UL9 he vltimldi I, equlvifedte i 95,>>> mlorkarimks he retldkf pkr arimk k 95 ma/a he premezofi. 9 UL = >.? ζa he retldkf (?)
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