Proceso de integración de las inmigrantes latinoamericanas: problemáticas y testimonios

VII 1.i'h� crn>otantt {�onti!Ot Q't Vow ::enl ,-nd l.J(IQtnre 1e d1tH!llenea ntH.l re£, eons sueget�tect for iu e t'?srcmt

relatJ. V(? non-uv.-; il;;bili ty to t"''lttinonto

�urtng

tha

�urtoter· r<l<mtht�. 1� nu:nt:(uo of JJOtt. iblu factors

1nclud1ng

th� t:t'fect o'!: b1� :t.•!ura •·nil lo vrott&1n

ore \mt'iel'

1nvo�t1t:-e t1cn. :xper1mento ure _ulso being et:�rr1od ou t _{to Jeturm1tl� aetHJ<.1nsl} chunr,�a in th� t:ocopht.U'Ol

content or tho pt PSture unc!l the t!!"''i'ect;) ot thooe on tha v1tcu:t1n potency of

tllC!

_tmtturfot.

V l I I In _{vie\\ ot• ih<l} '-71dul:� cSJ.:fr&•tiflt prooeuurotl

Ul>ed in �unfloun l::.borutorios, 1J

L�urv�·

h.l·ltl been made or tht' Jt.etbo _.,s ovt.:c 1loolt�� . ror the eotireat1on ot: OtJrotene 1n _{pl�nt motar\�lc.} �rrore _tnhercot 1n a number of theoe· Ol'O <li ecuetied (�nd a ':'l'cthud �t.J{Y."t."Sted bollod on o

cold t:·t!i'·nol-potrolonm

"thflr oxtrtl ct1on !'t.)llowed _bJ ehrometog.rophy

on

tl

column

ot

lcytlo

� upur-cel. 'th1e

.. 140 -

publi shed _{Pl'OCfJthn•es ,} 1 o _simple �ma ra�lid and 1u

eui tr�blc fc..l' the 1'out1n0 uar�lly o :f lrl rHO n\UilbtJro ot nernplt;ft. The _{nat1lrx1 h"a bftOll u} oel\ t'or _tho 0nt1mctlon or

CCH"t>tOJlc.t in

!'!-6Bh en a lll'10d lteJ'b&gC

bUd

.fnecee , ond hila given _{r<"t�·,lte}

in

socd Clt�rot!'llftMt •lth those obtn:tnod by ethel' OOMonJ.y-uaed metboc:f8. )'he

o ccurtu���· ��nd :revroduo1b1l1 ty of: the m.ttthoO l\liG btten oY.teno:l vely 1n,teet1gated.

IX. _{Cnrotane to 11} �1n _rnt1ot; 11ave boen 6e�eB1no4 o t t

1trerent

points through the die�et1v• �r�c�G of e

:rourH, to «.htcl•E)3ee tt .. rough the u"pnr pOPt1on o f the emnll

inteatin�.

to ineree�e through _the il8,M, reP<'hins a J¥Jx.1mm 1n _thu c::r;eC\Ullt an£! to _deoremee

el16htly throu�l the� colon ,n.,_ :s•t:tatum. It ie anown

th.Bt tn1e incrt�S!tl'Je _{1n e�rotd'\� to} lignin _ratio 1 & not _{tlllo to} �l. rttnl t't 1.S�etibil1 ty of the lignin

1'r�ct1on

of bC?

rbn?:-a o� t.l th<: Pt"\:�cnc:u: ot o non-corotcme

·11,i!.'·umt enll 1 t 1 o t:1Jgrestod thot th�ro ie o eynthee1 a ot co��rotene b!f tJu� m1cro�,rgani�0 of "6lut ilwm and caecum.

'rhtJ .. ·rnthante nf c�rot�ne b:f :!nteetinal mtc�-o!'ganlo.ws

hn� v<.tC3n ('}umonGtrotod on on _{A;:�:n• mecUum} 1noculate4 with c�>�c�l

- 1 41 -

Tho cuthOJ- wi ohGo to expreoe

hie

oppree1llt1on ot �1a _{co-operation reco1ve4 fro�} vorloue membera _o�

tbo utarts ot Uscoey Agr1 culturol collogo, the _Daiq

t!oaearch lnstl tute, tlle _{�18l'lt tlusmict�y Ltlborutor1 ond}

the o ruealt;nde _{J'J1v1 elon ot} the _{DopArtmcnt ot t.c1ent1t1c}

In pflrt1 eu ltJr 1 t _{1 f) dco1 rea} to

neltnoul.mSgo

the tollow1ng -

Dr. C. H. narn1ooot ro r _{bla tntereet t.�ntl ( &t:··10tfmoo} tllroughout the 1nvetlt1gat10RJ other �omuera ot the

D10C'hem1&tl'J Dopertment - u:r.t.w. cawley

for

_holp,

pcrtlcul,nrlg v1 tb tho onlul tee41ng .o�k, ond 14'11. 1411 Jur4 _for �dvlco _{on 1o�lnat1on} �xperimenta •

.

Meucre _{�·.it. We'beter,} J. c. Newbook ODd B.

A.

t\OJ1'10ld8 for vot�tner1 aeetetanoe.

l.fr.J. H. _Totle$' tor uae _{ot on �n111111 .reading}

shed

ond

experimenta l an1�ll8.

Drs. F. H.

UcDowoll ond 11.1!. Dolbr or the Delr¥ Reoeercb Inotl tute tor tbo ue e o� a Deokmlln (;peotro\)botometer

durln� the oar11 _{otagoo of t}h_e 1nvee t1sPt1onJ Ur.

A. K. r .• UcDowoU, OlGO ot the 11811'J Re&eoroh Inat1 tute, tor o ocesa _to tllO _{Irust1tute' u tlgurce tor the v1te.m1n} A potena, or buttez-fut.

l·r.J. 1-ielville of the •lent l..:hcmietr, Ulboratorv for hie _{1ntoreet ttnd t�or tl� uso of op�tol} equ1pacnt. tAr. iJ. n. Searo _of

the oraeclantlG

_v1o1on

and

hi e

sesi etunto tor tho1r w1ll1ng co-operation � t all tl��aee pnrt1cmlarly 1n R;up,>l¥1118 grovo etJmpleu, in providing pueture OMlyolu t1�roa ono 1n R Uov1ns the utle o� oxp�rimentel Gn1JOOle.

trtnellv lJ.r. u. n. .:�rlom and _{the College Llbr.ey :} taff for tho1r oasiatonce.

Thle V�ork hse been t'irmncod by Un1vero1tv heeeerch Grant• ond ca rried out during thc3 tenure o't

- 142 -

1 .

Grldgeman _{lf. !i'. ,} "The Eet1ut1on ot Vi _tem1n _{/\.n ,} l.evel' nroa. & Un1lover r/t4. , x�ondon,

( 1944-) •

2. Gridgen�an _{D. T. ,} " Hecant Work on the Chemiatl'Y

end f_�t1_mat1on _of Vi tulln

_A.

;;�Qrt II" Cha.&: Ind.

( 19Jt.7) , 571+·

3·

t'Uethode ot V1 t&aln _Aa&Altt

The

Aasoc:r1ation

of

Vi

_tsm1n t:heaiata lnc. Intort�c1onoe _{.Pucli�J\ex-e}

lno. , _new ��rk

_{( 1 9�7) .}

4 • _{Htlwk, k'• B. ,} 0&01' _{8. 1.,,. 6 tlUJ!08NOD l¥. lt.} 1 ,. :-i_J'etct1C8l ",hya1olog1cel 'the _Blok

i

e_ton comPf'nJ, 'l'oronto, _{1 2'h} itd.lt1on

5·

.t\rttl_&h Phetrmaeopoe1a

A4ctenclla

19,6

•

._.,hfil"Blcopoet.a

ot

the _{Un.1 tea} t�tatu 1942.

c:o'Jsrcl

Keli.

_".81oloa1cal �·.tondortUeetlon o� tho Vi tamlna� 1Ml1l_l1e_�e_, T1ndale _{& oox. ,} l'An4on, 2nd K41 t1on

( 1,l4-7) .

G.

Oeer n. I,. , :Mulniclt D. 1 l-'B.4$r W. t Roth i\. e Oae� M.

"D&t$Ma1nat1on _ot V1 trudn A. Co1"relat1on _o�

I�z�vod 8peetropho�etr1e • Color1setr1Q Motboda w1 th 1tul t1pl e-t.evel B1oaaaqs. " Ind. .F.J18.0hea. ( Anol. i£d. )

17

•

559 , ( 1945) •

7•

Oeer B. L. , Mclnick D. & i�der M. " �at1mot1on

of

11 t9m1n • tn Fooe Pl'oti"'uoto'� . Ina. _Ens

•

Chom ..

(Aool.

1'1d.

J

1;' 7�4.

(

194.,) .

8.

robcl A.;,;. & \l;erbin _If. "l'Jeteminot1on

ot

Vitamin in .Fish !.1v�r Oils w1 th AOttvetetl GlJCctrol

Intl. Ens_· Qbcm.

(

Mll\l•

;;a. )

19, 107. 1 �47 ) .

9 • _{�}Wing 0.\1. t!t �·ereorus}

T.Jr. ,

�'Int�:a·oolllpariaon _ot

DeekmQn ... .'\nNl.Cheu, 20 ,

423 .

(

10.

"Hundbook

ot Chem.�

.i.'�Gies,. Cihomical

Rubbor

P1.1bli sh1ng t.:o. ,clevell!tm.t, Ohio., 29th I.!U11 tion. ( l'OI!G

205S

_i

1 1 . �or

ton _{H. A. "AP{Jlica} t1un _of ll.baorvt1on � ��ectra

to _th� tu(}.y _ot V1 �181ne, _lfornM)nee ond Oo-eneymoa'1•

A�am Hilg•r _{I.td. ,} I.ondon, 2nd �di\1on, { 1942 ) .

1!?.

Kr61dar _{H.r-. , 1'2-t.'henJl tllK>-p-ercuol. A} Photo­ rnotr1ct f•t!H\tllnrd f'or Vi tomin _A."

·

Incl.

!·:ne.Chom.

( anal ...

i·;d. )

1 7 , 69�· •

( 1945) •

1.3•

Baxtcr J.o. & hobeoon O e l>. "CrJGWlline Vi tumin

t{Y . J. Ame.t•. ch�ll • �.:oo.

�.

?.kt11 , ( 1 942) .

14.

Lch1boted

li. 'tNcw ·�·eet to1•

f'&t Alauhydea

l.c�r.ult- 1ng

from

0116nt1otl of' Fatll ant� t11ls. 1 1

lnd. l-!ng. t:hem.

{Anal. :;d.) .ft, 20-t..,

(

't9�2)

•

1 5.

�'or ton _{s. A. ,1} ::tnob& A.L.} ,. t tud1ee 1n V1 ta.m1n 1\. �. � �ectrophotometric _{Dete�nntion �t} Vtta�n ₁

in

�l vcr

Cl1l.o. _�Ol')!ec: t1ort _{1,or• C:t•relovont A'bsorJ>­} tion. ,. D1ochc� J. 4-?.t

195 ( 1'J43).

- 1 �, -

1 6.

Me'oolt W. S• t _{n spoct�opbotometr1c} DGtorminat1on

ef _V.ttalllib

A.

1n _{J:'iah 01la'' . Natu�re,}

155.- 575 ( 1945)

•

"7·

Rnwllntro _H .. w.& Wnit

o.tr,

"nel1£tb1l1ty

& 1�1'eo1a1on

18.

of _the e.pcetrosoo·plp _{Detemnlntrtion} 01' _{V11.Elm.J.n Au} tt

Oil. &·

t:toap� ''

;

8' � 19�6)

•

O�er :s,_x,, t Malniek D.� �11&lr 1i. "CJhemJ.�al &

i-b�.sicell

J)C!f'bevmtnst1on _{A ln 2?1eb l,tve, 01le't.}

rna .. ena.oh«a.

1 51 717,.

( 194,,)

•

Little r�.w. "Deathletive Irrndirlt.ten _{1,IIachn1Q:\10 a:£}

A Aeeeu"• I�.Rng.

Chem.

(Anal. rut.)

194lf..) ,

20 . zucMo1stor r�. "C1o•tl'ane zeome:oietn & st�eo­

Ch_�8tr_{r ot} OerotenoiCle _& ditm�lpol.7enoe". Ohtim. Rev".

,4, 267,

( 194Jt.)

•

21'

�� 0$�,_. B�t I.. t, 1)1m,nli.1t;ted Fo�m

of

uox-ton &: stubb

Cot»x-eet1.on of Vi tam1n A A'beqrptiotl CllWeeJ. t• Antll.. ChAD..

21

�

5�

{ 1949)

•

22*

Drumt110n� _{4T. c. & ��ota�n} A •. l?-. "'l'be �.ul-pbux•J.c Ac14

,Rea4't1on tor tJ.vett 01111'� Anal+'et.

lf-7• '4-1· , (19a2) .

2,.

i?oaenhe1m o. & nrummond _{J. c. �A l'Olicate G}ol_'Our

Heaetion for the ot V1 _taD1n N' •

.t11o�hmnuT.

19• 75'•

24• mu.,.r F • .H, & Prtce F .. t� • .-.0olour :��actione

t�ttr1butt�d t() V1t&m1n _""''f :B1oehem.J. ao,

4-97 '(1926).

2,5

.. Dann 'f.J,. & EY·elNn 'lC.A. 111The Detertta.nat1on \1�

Vi trunin A. w1 th t�

:;·,.lotoelEtc-tl"io

Ccloriin<eter. u !:li�chfP!,.T •

,2,

1008

( 19,6) ..

2G,

1•Colou� �eJJta f'Ot.' _{Vi'ttrnlin A". Uut} .. s<ev.a.

�1<1 i�17

( 191�6) .

27

• l\enhatst o. n. '"fbe An'\il!lO�W '.r r1cbl.OP1tlc ��otll'b" tcsr tho l:tetel'MnatitJn or _{V:!. tnmin A." oanut\,.J.. n}

_o

_a

.

22.6,

21 ( 1944) .

26..

P.Obln B. n. n �eaoti·on of Vi tt.lmin J.\ ''" th L1'l)balimalln­ mue:Jlf\l•a a:e1ence

102, 17, ( 1945).

29. ttosra 4Y G.

''ltto-ro 'Oetera.t.na�ion ot vi t�JtttiS

A

br

�ena of t�lChl..or�eU.c ac14 _{.I'CI8S�t. ..}

orv ..

�eh. ,._5, '''•

( 1944) •

c.1 ;JJ

··

,0.

�obnerin ll. fl. & l'}au��.ttnn

C.;\.

nattuU.eG on the lte)&ctl.on

of

c

_ortain coroteno14e with _antimon.v tr10hlo:x•1defl. J . Diol. Ch�

1 6, , 8; { 1947} •

,}1

� So'bel A. E. & W·e.ttbin l'I. •• �:pectrc,�hotoutrie

�tudl

ot a

ne•

U«\gent _tor V1tum1n

A• "

3 4Hiol. C'Jl4im.

1 51 .

( 194.�).

r:

!]2.

t:obel

A.�. & \Hntbin It.

''Activated. GJ.yO&'l"Ol 41ehl.oro­

)Wtlr11!. · A _{ne-w coloJ:J.1m�Utr1 c: l'e&gent} :.fox- _{·v1 t•amtn} ""* ,. :tnci •. Sn{i .. Ch�llt.

( anal.. Ea. )

16,

!)701 ( 1946).

'�·

?enketh _n.n. "Ol�c,rQl _and vitamin

A1'-. Nature,

161 , 69'·'

1946)

•

34. Sobcl

/u ,;)�. c't ::now Sitl)•

''met1nt.ation o:f• Serum-

v1

_talnin A w!th tJot1vatmd g:cycorol d1chlorobYtlr1n. u

J. H1�l. ChER».

1 7'1 ; G17 ' ( 194t).

''•

WGlJ.� !Q• I•;,. � K�ll.le¥ _{B.Q., uDet0l.'m1nu,t1on} ot V1 _t&m1n

A t.=eter in fo1'tit1o4 poultA.�� _maehen witll tsetivated

glycerol

d1chlorobydri.n••. _{Anal. Chem.} I ro .

757

( 1948).

- 1l+Jt. -

_;6. Squibb U.L. , Co_nnon _{C.Y. &} Allen h . G . " Effect o� raw soya beans and eo e _{bean oil}

on

plaama carotene and on

vitamin A as

moasured by activated

di chlorohydrin." J. nstry �ci. 3 1 ,

421 ,

(

37. 1fcG1ll1 vray \,. A. , "A laboro tory-bu1l t photoelectric

colorimater ond fluori

m

eter." N. ?.. J, Sc1.& Teohn� 29 , 317,

(1948).

4[).

Jone• _{G. I. , �antord F.D. , KcKee L.G}

a U1yauch1 _{D T}

of the Deckman _{Quartz Spe}

�

_{trophotometer· •}

measurement ot vi tamin A the _Carr-Price

reagent. " Anal. Clus. 1 9, 1 42

McG1111vray W.A. , "The

v1tem1n

of New

�eslsnd meat II, Mutton ond _I..smb1' N. 7..J, _Sci.& Tech. ( in the prese)

An�ona1n1 c. , Feder1co L. .t

A

rton A. '!Use ot glycerol dichlorohydrin in the determination of

vitamin

A

in oil concentrates" . Ol�aria ( 1 943) �05, ( C.A. ��

82� ( 19�8) .

4,.1 .

Lowman A. "A

new

reagent for v1 tamin A. tl Lcience

1 01 t 1 8',

( 1 9

4-5) •

42. Kreiaer M. R. 11Reaot1on o� vitamin A with ''euper­ ru trol" " • cc1ence, 1 0 1 , '77 ( 1 9lf.5) .

Moun1er P. "Oompee Rendua de 1 • Aca4. Franoe 21;, �70 ( 1 9�2) oa quoted by zeohme1ete_r

L. &

Landoval A. ••The coloration given by vi tamin A and other polJanee on scid earths . " Soience, 101 , 585 ( 1 91+-5) .

�4· Vecher A . � . "Color1metr1c determ nation of vitQmin A by on bentonite. " Siokh1m11a 1 , ,

501 , ( •

( C. A.

4-3 , 3056, ( 1 9 49) ) •

45• Shantz \Jawley J. n . &: Embee _{M. v.} ''�dro

vitamin

Af•.

J.Alller .. 65,

901 ' ( 1943) .

46. Gallup

W.D. &

Hoe.ffer J.A. "J.)eterminot1on ot

vi tamin A 1

n

11 v er•' In d. :£ng. Chem.

(

Anal. ga.. )

1 8 ,

288 ,

( 19J4-6) .

L, 7. Dnvieo h . w . ''The color1metr1o determination ot vi tam.1n A by the alk

a

li method. "

Biocheme tT. 27, 1 770 , ( •

48. K1mble Y. s . .. The photocolor1metr1c determi

n

ation o:r vi tsmin A snd carotene 1n human ploamo •• ,

J. Lab.Olin. Med. 2�, 1055, ( 1939) .

4-9. Yudkin _�. "'l'he estimstion ot v1 twn1n A and carotene

in human blood" . ll1oehem-J. 35, 551 , ( 19lt-1 ) .

50· �'1eher

H

.J. & Da1ley c:.l.f. ••vi tamin A color rea_ctions. A review of li tera ture. " J.Aseoc. Oft:'i c.Agr. Chem,

1 3 , 352, ( 1930) .

51 . Bacharach A.L. � Om1th E.r,. "The Chemical evoluotion of the vi tamim�'' ;\nalyet,

59, 70

(

1 9.3J.r) ,

52. Allen R. c. , RW 1ee

o.H.

& Jacobson N . L. " occurrence

in blood plasma from certain u�iry calves of tactore

tllat inte rfere w1 th the blue oolour reactions of

a ctivote4 glvcerol A

- 145 -

5'•

.,.,a

rr

i_eh t>.Jl. , Y. i ee O.H • �· Uughce J. �. "Vitamin h ana oe

r

oteno

₁

c!a in

_the

blood oerum ot doit:7

oe ttle•t . All8l.Chom.

20,

_2,0,

( 1�1t8) .

54·

Oll_lBm A. _{r� UA}

_m0d1f1od

apectro;)botometr1o mothocJ tor tho ot cero'\eno and v1 tnmln A 1n buttor."

lUnebem.J.

73, ( 1 :J'J,.)

•

Baultftrm C. A. , ..,teenbock aeeaon _{w. &} l:upol I.w. nt.•et coluble vi to mina. 1ntluenoe ot breed &nd tUGt of cow& on the oaroteDo end vi tum.ln A content

ot butter." J eb1ol.

C

heaa.

105, 1 '7 ( 1,�)

•

MdUcbolaa _H.J. u'l'he vta.lble on4 ultra-violet

abGorpt1on opectra or c•roteno

_tiDd

•n,http�ll

ent1 the cbangeo aocompobltna oxldetion. " lrureou

ot t;tlt:tndar4e Joul'Dtll.ot' tiesearch,

7, 1 71 ( 1 J,1 ) .

57.

�·ohrenk _{w. �l. t Uilker n. �·. &} Jt1ng n. H. _{"�tteot ot} jJ aorotcm• t eomeriaation on 1 ta

abeorp'\1on

n t

326

rut1• Ino.·ltg.Chem.(Anol.!·;cJ.)

1 (;, '28 ( 1-J.�tJ�.) .

58.

Uort_on _li.A. "Carotene _"nd nlliccl tubetonoee 1n

too4e

end

tee41ng iltutta., " _Anal.vet,

65, 26' ( 1 940 ) .

59·

Jrun�er _R.F. "V1tna1n A Gild the bloloslcnl� oott•e

osroteao1�. " _{Chem.� lnd.}

( 1,42} 89.

60.

SUler _H. v. Karrer ,,. t; �olmeeen u. "Uomologe

ot v1tem1D _/..- on4 dogradotlon Pl'Oduot ot _J.. Otlrotene,

r)... aPQ-2-oarotcnal" . llelv.Oh1m. _·�eta.

21 , 21 1 ( 1938) .

61 .

Jmntor

1\.F.

&

�}lllifUDI N. l�. " 'rho cbec1ool conveJ•aion of car

_o

tene into

_v1

tamin _lu •• J. Ohom.

soo. 19•5• 5�

62.

Uuntar k.P. "The eonveraton ot corotene into v1

tamn A."

nature

1 58, �57 ,

( i�46) .

G;.

: ecbcoleter _L. ,_. Le Ho11en _{A. 14. ,} • chroder

�·"-•

.i•olpr A. _� o.'OUllng

L•

11ti)OCJtl'bl

nno configuration _or oarotenolde

including prol.yco�eno .t: �ro• •Ct1rotene. "

In document Integración de inmigrantes latinoamericanos en Canadá : políticas sociales y problemáticas de inserción de los inmigrantes (página 186-200)