Cercetare experimentala privind dezvoltarea unui nou produs cas cu masline si busuioc

7/26/2019 Cercetare experimentala privind dezvoltarea unui nou produs cas cu masline si busuioc

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CERCETRI EXPERIMENTALE PRIVIND DEZVOLTAREA I STABILITATEA UNUI NOU PRODUS LACTAT - CA CU MSLINE IBUSUIOC

6. CERCETRI EXPERIMENTALE PRIVIND DEZVOLTAREAI STABILITATEA UNUI NOU PRODUS LACTAT- CA CU

BUSUIOC I MSLINE

6.1. Scopul cece!"##Cercetarea experimeta!" are #rept $c%p i&e$ti'area (%r ip%te)e *i extra'erea (%r #ate pe+a)a c"r%ra $" $e ,%rm(!e)e a(mite c%c!()ii *i a$t,e! $" #(c" !a .e!e'erea ,e%me(!(i/

Acea$t" cercetare experimeta!" are ca %+iect #e $t(#i( m%#(! #e &a!%ri,icare a! !apte!(i0 &e#erea %+.ierii ((i pr%#($ %( $i'(r0 care $" ( p(" peric%! $""tatea c%$(mat%r(!(i0 #ar*i m+("t".it #i p(ct #e &e#ere %r'a%!eptic/

6.$. Me!o%#c& %e e&l#'&e & cece!"##

Ca#r( #i#actic #r(m"t%r1 A(t%r1e, !(cr/#r/i'/ CRISTINA-MARIA CAN2A ANDREEA-ALEXANDRA MAXIMIUC

34


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(#).6.1.Metodica de realizare a studiului experimentalPetr( a cerceta experimeta! %+.ierea ca*(!(i c( m"$!ie *i +($(i%c *i $ta+i!itatea ace$t(ia0

$-a( m%it%ri)at *i tre'i$trat at5t parametrii pr%ce$(!(i te6%!%'ic0 c5t *i &aria.ii!e timp a!epr%#($(!(i ,iit/Petr( #e$,"*(rarea cercet"ri!%r experimeta!e $-a( ,%!%$it per t%ta! 78 ! !apte petr( a $e

a9('e !a pr%#($(! ,iit #%rit/Sc6ema te6%!%'ic" a ,%$t a#%ptat" &e#erea %+.ierii ca*(!(i c( m"$!ie *i +($(i%c0

re'i$trarea parametri!%r te6%!%'ici *i aparat(ra (ti!i)at"/6.$.1. Sc*e+& !e*,olo)#c" %e o#,ee & c&/ulu# cu +"0l#,e /# u0u#oc


STRATEIAEXPERIMENTRII

DETERMINRIE:ECTUATE PE

LAPTELEMATERIE PRIM

LAPTELE DEVAC

ANALIZASENZORIAL PROCESUL TE2NOLOIC

DE (ABRICARE A CAULUICU BUSUIOC I MSLINE

ANALIZAREAORANOLEPTIC I (IZICO-

C2IMIC A CAULUI CUBUSUIOC I MSLINE

3NREISTRAREA4PRELUCRAREA SIINTEPRETAREA

DATELOR

PARAMETRIIAPARATUR

ANALIZA :IZICO-C;IMIC


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6.$.$. De0c#ee& e!&pelo p#5#,% o#,ee& c&/ulu# cu +"0l#,e /# u0u#oc= prim" ,a)"0 !apte!e cr(# e$te $(p($ (%r aa!i)e >$e)%ria!e *i ,i)ic%-c6imice? petr( a $e

&eri,ica #ac" ace$ta $e ca#rea)" parametrii %rma!i &e#erea pre!(cr"rii ace$t(ia ca*/=c"!)irea !apte!(i !a temperat(ra #e @8C repre)it" temperat(ra %ptim" #e i%c(!are a

c6ea'(!(i >pep$ia? !apte/ La temperat(ri mai mari0 mir%%r'ai$me!e #i !apte $(t #i$tr($e *ie$te %+!i'at%rie $"m5.area !apte!(i c( c(!t(ri +acteriee/

Pri me.ierea temperat(rii c%$tate >@8C?0 micr%%r'ai$me!e +ee,ice a!e !apte!(i $e#e)&%!t"0 ,"r" a mai ,i e&%ie #e % $"m5.are c( +acterii !actice/


LAPTE CRUD-VAC

=NCLZIRE @8C

INOCULAREPep$i"80 m! ! !apte

TERMOSTATARE@8C0 timp 7 6

TIEREA COAULULUI

MATURARE COAUL

8C0 timp #e 7 6

SCUREREA ZERULUI

PRELUCRARE COAUL

TURNARE =N :ORME

PRESARE

SCOATERE DIN :ORME

SRARE UMED

AMBALARE

@8 ' m"$!ie7 ' +($(i%c


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(#).6.$.Plit electric DeKassa i pipet semi-automat de dozare a cheagului

(#).6..nclzirea laptelui pe plit la temperatura minim pentru a se evita fierberea i caramelizarea(meninerea temperaturii de !" #$ timp de % or&

D(p" term%$tatarea !apte!(i timp #e % %r" !a @8C0 c%a'(!(! ,%rmat e$te t"iat *i ap%i itr%#($!a c(pt%r !a temperat(ra #e 8C0 (#e e$te .i(t c" % %r"/ C%a'(!(! $e taie c%!%ae c( !at(ra#e -@ cm0 c( a9(t%r(! ((i c(.it c( &5r, a$c(.it petr( a $e e&ita pier#eri!e #e c%a'(! )er>pr",(irea c%a'(!(!(i?/



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(#).6.7.'ierea coagulului i maturarea sa n cuptor la temperatura de )* #$+ timp de o or

Petr( a $e $ta+i!i $,5r*it(! c%a'(!"rii0 c%a'(!(! tre+(ie $" $e #e$pri#" ($%r #e pe pere.ii&a$(!(i0 iar )er(! e!imiat $" ,ie !impe#e-&er)(i/

(#).6.8.$oagulul dup %# minute de maturare (#).6.6.$oagulul la sf,itul maturrii

D(p" mat(rarea c%a'(!(!(i0 ace$ta e$te $c(r$ #e )er *i pre'"tit petr( pre!(crare/



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(#).6.9.curgerea zerului (#).6.:.Mrunirea coagulului

Cea mai mare parte a )er(!(i $e e!imi" pri $c(r'ere 'ra&ita.i%a!"0 circa FG >,i'//


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Pre$area $e ,ace miim @ %re0 timp care +r5)a e$te t%ar$" #e pe % parte pe cea!a!t"0petr( % $c(r'ere e,iciet" a )er(!(i *i petr( a $e e&ita ,%rmarea c%9ii/

=tre timp0 $e prepar" $%!(.ia $a!i" #e c%cetra.ie 8 G petr( $"rarea ca*(!(i/

(#).6.11.Prepararea soluiei de saramur de concentraie *# /

La ,ia!(! pre$"rii0 +r5)a e$te $c%a$" #i ti,% *i it%#($" $aram(ra rece petr(m+("t".irea pr%priet".i!%r %r'a%!eptice *i p"$trarea ace$teia ( timp mai #e!('at/

(#).6.1$. $a proaspt cu busuioc i msline

6.. Me!o%e4 &p&&!u" /# #,0!u+e,!e u!#l#'&!e =, c&%ul cece!"##e>pe#+e,!&le

6..1. A,&l#'& 0e,'o#&l"Tre+(ie $peci,icat c" aite #e a cepere examiarea pr%pri(-)i$" a a!imete!%r $a(

pr%#($e!%r a!imetare tre+(ie e,ect(at" aa!i)a $e)%ria!" a am+a!a9(!(i care ace$tea $(tam+a!ate $a( pream+a!ate/ Se &%r ,ace re,eriri pri&it%are !a ite'ritatea ace$t(ia #i p(ct #e&e#ere a! pre)e.ei $a( a+$e.ei a(mit%r $%!(.ii #e #i$c%ti(itate repre)etate #e cr"p"t(ri0t"iet(ri $a( .ep"t(ri c5t *i #e $a!(+ritatea !(i/

U a!t a$pect care $e &a preci)a0 $e re,er" !a pre)e.a e&et(a!e!%r $c(r'eri #e c%.i(t #i

am+a!a9/



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P(ct(! (rm"t%r care &a tre+(i a+%r#at $e re,er" !a exame(! etic6etei (tri.i%a!e (#e $e &a(rm"ri i#eti,icarea a!imet(!(i $a( pr%#($(!(i a!imetar aa!i)at0 pr%&eie.a ace$t(ia0 #ate

pri&it%are !a pr%#(c"t%r0 !a c%.i(t(! pr%#($(!(i re$pecti& #i p(ct #e &e#ere a! i're#iete!%r*i ( (!tim(! r5# !a terme(! #e &a!a+i!itate/

Exame(! $e)%ria! a! a!imete!%r $a( pr%#($e!%r a!imetare $e #e$,a*%ar" #(p" ( p!a care

ic!(#e tr-% $(cce$i(e !%'ic" (rm"t%are!e etape1A/ I$pec.iaB/ Pa!pa.iaC/ Sec.i%areaD/ De'($tarea

01 2nspeciaSe p%ate rea!i)a #i apr%piere $a( #e !a #i$ta."/Pri i$pec.ia #e !a #i$ta."0 $e %+.i #ate re,erit%are !a $tarea 'eera!" a a!imete!%r c5t *i

i,%rma.ii #e$pre mir%$(! ace$t%ra/La i$pec.ia #i apr%piere $e %+.i i,%rma.ii #e #eta!i( a!e i$pec.iei #e !a #i$ta." c(m ar ,iite'ritatea am+a!a9(!(i0 pre)e.a a(mit%r #ep%)ite #e $(pra,a."0 ere'(!arit".i0 pete #e c(!%are$a( #e m(ce'ai0 crap"t(ri $a( ex,%!ieri/

31 PalpaiaPa!pa.ia $(per,icia!"0 %,er" #ate a$(pra temperat(rii a!imet(!(i re$pecti&0 ere'(!arit".i #e

$(pra,a."0 a tip(!(i $(pra,e.ei a!imete!%r *i $e rea!i)ea)" c( a9(t%r(! #%$(!(i pa!mei $a( c( p(!pa#e'ete!%r0 (ti!i)5# recept%rii #e temperat(r" !%ca!i)a.i !a i&e!(! pie!ii/

Pa!pa.ia pr%,(#"0 %,er" #ate re,erit%are !a text(ra a!imete!%r !a pre)e.a iteri%r(! !%r a(%r a'!%mer"ri #e materie prim" ca)(! e%m%'eit".ii ace$t%ra0 $a( a (%r c%rp(ri $tr"ie $i$e rea!i)ea)" c( p(!pa #e'et(!(i ar"t"t%r *i ie!ar pri pre$i(e/

$1 ecionareaSe ,ace c( #i,erite c(.ite/ Sec.i(i!e care $e practic" a!imete $e ,ac pe p!a(! tra$&er$a!0

!%'it(#ia! $a( $a'ita!/ Sec.i%area %,er" #ate a$(pra %m%'eit".ii pr%#($!(i a!imetar0pre)e.ei e&et(a!e!%r c%rp(ri $tr"ie0 e&i#e.ierea '%!(ri!%r #e ,ier+ere $a( #e ,ermeta.ie ac%!%(#e e$te ca)(!0 c(!%rii a!imet(!(i0 iteri%r $a( a mir%$(!(i/

D/DegustareaAre ca $c%p aprecierea caractere!%r '($tati&e a!e ((i a!imet $a( pr%#($ a!imetar/ = acea$ta

$(t imp!icate papi!e!e '($tati&e *i mai exact ce!(!e!e er&%a$e $e)iti&e pe care ace$tea !ec%.i/

Pa!pa.ia *i $ec.i%area $(t ap!icate (mai a!imete!%r $%!i#e $c6im+ i$pec.ia *i #e'($tarea$e ap!ic" t(t(r%r cate'%rii!%r #e pr%#($e a!imetare i#i,eret #e $tarea !%r #e a're'are/

N( $e a!i)ea)" $e)%ria! pr%#($e!e a!imetare $a( a!imete!e a!terate $a( $($pectate #e a ,ic%tamiate c( micr%%r'ai$me pat%'ee/ 73J



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= &e#erea aa!i)ei $e)%ria!e petr( ca*(! c( +($(i%c *i m"$!ie0 $-a ,%!%$it ( te$t ce pre&e#e%tarea ca!it".i!%r pr%#($(!(i ,(c.ie #e % $car"0 #e !a 7 !a / petr( e&a!(area pr%#($(!(i $-a(,%!%$it @ per$%ae0 iar p(cta9(! ac%r#at $e re'"$e*te aexe/

Ta+e! 3/7/4valuarea prin puncta5 a calitii senzoriale a produsului ca cu busuioc i msline

C&&c!e#0!#c#0e,'o#&le

Sc&& %epu,c!&?

C&/ cu u0u#oc /# +"0l#,e- %e0c#ee&c&&c!e#0!#c#lo po%u0ulu# e>&+#,&!

Pu,c!&?&co%&!

A$pect exteri%r 8///

B(c".i tre'i0 c( $(pra,a." c(rat"H $e a#mit(rme #e $e#i!"H c(!%are (i,%rm" pe t%at"

$(pra,a.a

Se a#mit +(c".i ,%arte (*%r #e,%rmate S(pra,a.a (*%r c(tat"0 +(c".i #e,%rmate0 c( pete

,%arte rare0 c( m5)'"@

S(pra,a." (*%r m(iat"0 (*%r m(ci!a'i%a$"0(*%r r%*it"0 '"!+eit"0 c( imp(rit".i0

m(ce'"it"

B(c".i c( $(pra,a." m%a!e0 m(ci!a'i%a$"0r%*it"0 '"!+eit"0 m(ce'"it"

7

B(c".i c( $(pra,a." ,%arte m(ce'"it" 8

C(!%are 8///

A!+"0 c( (a." '"!+(ie0 (i,%rm" t%at" ma$a C( mici a+ateri #e c(!%are0 #ec%!%r"ri pe a!%c(ri

Ne(i,%rm"0 (*%r marm%rat" @Ne(i,%rm0 marm%rat"0 c( pete r%*iatice $a(

'a!+ee0 c( imp(rit".i

C(!%are e$peci,ic" t%at" ma$a0 ,%artemarm%rat"

7 $a( 8

A$pect $ec.i(e 8///

Pa$t" c(rat"0 (i,%rm"0 (i,%rm"0 $e a#mit'%!(ri rare #e pre$are *i %c6i(ri rare #e

,ermeta.ie !actic"H r(pt(r" pre)it" a$pect #ep%r.e!a

Se a#mit %c6i(ri rare #e ,ermeta.ie !actic" *i'%!(ri rare #e pre$are ,"r" cr"p"t(ri

Se a#mit '%!(ri #e pre$are mai mari *i %c6i(ri

#e ,ermetare mai m(!te0 c( cr"p"t(ri mici *irare pa$t"0 prec(m *i mai m(!te %c6i(ri #e,ermetare !actic"

@

A$pect (*%r +(ret%$0 r(pt(ri *i cr"p"t(ri rere0 ,%rm" #e $5m+(re #e pr("

Cr"p"t(ri #e$e pa$t" *i a$pect +(ret%$0 m(!te%c6i(ri #e ,ermetare

7

A$pect t%ta! ec%re$"()"t%r0 c( ,%arte #e$ecr"p"t(ri pa$t"

8

Ma$" c%mpact"0 c%$i$te." p%tri&it #e tare0

(i,%rm"0 $e r(pe (*%r ,"r" a $e $,"r5ma



10/32


C%$i$te." 8///

P%tri&it #e tare0 ,%arte p(.i $,"r5mici%a$"0,%arte (*%r a$pr"

Tare0 ($cat"0 $,"r5mici%a$"0 p(.i a$pr" @Exce$i& #e tare0 $,"r5mici%a$"0 a$pr"0 i$ip%a$" :%arte a$pr"0 ,%arte ($cat"0 ,%arte $,"r5mici%a$" 7

Ma$" $,"r5mat"0 +(c".i!e ( $e p%t me.ietre'i

8

Mir%$ 8///

P!"c(t0 $peci,ic +r5)ei #i !apte #e &ac" Speci,ic0 c( ar%m" $!a+ exprimat"0 #ar p!"c(t"

:"r" ar%m"0 (*%r acr( @Ne$peci,ic c( (a.e (*%r $tr"ie0 (*%r #e

#r%9#ii

Ne$peci,ic c( (a.e $tr"ie0 #e ,ermeta.ie+(tiric" $a( acetic"0 (*%r #e ,(ra9e0 #e r5ce#

7 $a( 8

($t 8K

P!"c(t0 $peci,ic +r5)ei #i !apte #e &ac"0 (*%r$"rat

Speci,ic0 c( ar%m" $!a+ exprimat"0 '($t p!"c(t Mai p(.i $peci,ic0 ,a#0 (*%r meta!ic0 (*%r #e

#r%9#ii0 prea acr(0 $"rat0 ,%arte (*%r amar0 (*%rpicat

@

Ne$peci,ic0 c( (*%are (a.e $tr"ie1 #e,ermeta.ie e$peci,ic"0 (*%r #e ,(ra9e0 (*%r #eme#icamete0 (*%r i(te0 a$tri'et0 (*%r amar0

,%arte $"rat/

Ne$peci,ic0 c( (*%are (a.e $tr"ie1 #e,ermeta.ie +(tiric" $a( acetic"0 #e ,(ra9e0 #e

me#icamete0 #e r5ce#0 amar

7

Str"i0 #e pr%#($ #e$c%mp(ere0 ,%arte amar0#e m(ce'ai/

8

'abel 61*.actorul de pondere

C&&c!e#0!#c& 0e,'o#&l" (&c!oul %e po,%ee

A$pect exteri%r 80C(!%are 80A$pect $ec.i(e 80F

C%$i$te." 80FMir%$ 80($t 70

Ta+e! 3/@$lasele de calitate n corelaie cu bonitatea rezultat la analiza senzorial

Nu+"ul !o!&l %e pu,c!e &co%&!e C&l#@#c&!#5ul c&e 0e &co%"7407-8 :%arte +(



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707-7F B(707-7 Sati$,"c"t%r 'ra#e T6%rer? *i repre)it" (m"r(! #e m! #e NaO; 807 N (ti!i)a.i !a e(tra!i)area a 788 m!!apte/

I,0!u+e,!e u!#l#'&!e pe,!u %e!e+#,&e& &c#%#!"##Petr( #etermiarea aci#it".ii materii!%r prime0 a $(+pr%#($e!%r *i pr%#($e!%r $-a (ti!i)at

met%r#a titrimetric" *i imp!icit +i(reta #e !a+%rat%r/3iuretae$te c%mp($" #i1 c%!%aa +i(retei0 re)er&%r *i par"/Petr( #etermiarea aci#it".ii0 pe !5'" +i(ret"0 $(t ece$are *i a!te i$t(mete #e !a+%rat%r0

pre)etate ,i'/ 3//

(#).6.1.2nstrumental de laborator utilizat n determinarea aciditii (de la st,nga spre dreapta&7balon cotat de %## ml cu soluie de 8a9: #+% 8+ fenolftalein+ pipet de " ml+biuret cu par de

caiciuc de "# ml+ pahar 3erzelliu de "# ml+ pahar 4rlenma;er de *"# ml1



12/32


Mo% %e lucu=tr-( pa6ar c%ic $e itr%#(c 78 m! pr%+" >!apte?0 pe$te care $e a#a('" 8 m! ap" #i$ti!at" *i

@- pic"t(ri #e ,e%!,ta!ei"/ Ame$tec(! $e titrea)" c( $%!(.ia #e NaO; 807 N0 $(+ permaet"a'itare0 p5" !a apari.ia c(!%rii r%)-pa! care tre+(ie $" per$i$te mai m(!t #e ( mi(t/

Ati'erea p(ct(!(i #e ec6i&a!e." e$te repre)etat pri &irarea c(!%rii #e !a ic%!%r !a r%)-#e$c6i$/

Titrarea c( NaO; 807 N $e ,ace pic"t(r" c( pic"t(r"0 *i ( 9et c%ti(( #e $%!(.ie0 petr( a$e p(tea %+$er&a &irarea c(!%rii/

Apari.ia c(!%rii &i%!et repre)it" ,apt(! c" $-a titrat c( % catitate m(!t prea mare #e NaO; 807N0 iar re)(!tat(! ( &a ,i !(at ca!c(!/

Determi"ri!e #e rea!i)ea)" #e ce! p(.i trei %ri pe % pr%+"0 iar !a $,5r*it $e ,ace me#iaaritmetic" a re)(!tate!%r/

(#). 6.17/Principiul titrrii pictur cu pictur (a&< proba iniial netirtat- incolor (b&< probafinal titrat- roz-pal (c&

C&lcululA >%T? 78V >3/7?

U#e 1V- &%!(m(! #e NaO; 807 N titrat0 m!/

6.3.2.2. Determinarea aciditii titrabile a brnzeturilor (ca)

Ap&&!u& ,ece0&"Pe !5'" i$tr(meta!(! pre)etat ca)(! #etermi"rii aci#it".ii materiei prime0 petr(

m"$(rarea ma$ei ca*(!(i $e (ti!i)ea)" +a!a.a aa!itic" >,i'/3/7?/


F8


13/32


(#).6.18.3alan analitic+ artorius

Mo% %e lucuSe c5t"re*te pe % $tic!" #e cea$ 78 ' +r5)"0 $e itr%#(ce tr-( m%9ar #e p%r.e!a pe$te care

$e a#a('" circa 8 m! ap" #i$ti!at"/ Se %m%'ei)ea)" +ie0 iar c%.i(t(! re)(!tat $e tra$,er"tr-( pa6ar Er!emaer0 $e a#a('a - picat(ri #e ,e%!,ta!ei" *i $e titrea)" c( $%!(.ie #e

NaO; 807 N p5" !a apari.ia c(!%rii r%)/

(#).6.16.$,ntrirea probei (%#g& cu a5utorul balanei analitice pe stical de ceas


F7


14/32


(#).6.19.Mo5ararea probei cu )# de ml ap distilat

(#). 6.1:1 Determinarea aciditii br,nzei prin metoda titrimetric

6.3.2.3. Determinarea densitii (lapte)

De$itatea $a( ma$a $peci,ic" a !apte!(i repre)it" rap%rt(! #itre ma$a !apte!(i !a 8 8C *ima$a ace!(ia*i &%!(m #e ap" !a temperat(ra #e 8C/

De$itatea $e exprim" 'cm@0 c( % &a!%are me#ie ca)(! !apte!(i #e &ac" #e 7084/ Se maip%ate exprima 'ra#e #e$imetrice $i repre)it" &a!%area me#ie a #e$it".ii mari!%r c%mp%e.i>apa0 'r"$imea0 !act%)a0 $(+$ta.e pr%teice0 $"r(ri miera!e?0 ,ii# i,!(e.at" #e pr%p%r.iaace$t%ra/

Ap&&!u& ,ece0&"M"$(rarea #e$it".ii $-a rea!i)at c( a9(t%r(! term%!act%#e$imetr(!(i >,i'/3/74?0 care pre)it"

(rm"t%are!e caracteri$tici1


F


15/32


D%mei(! #e m"$(r" petr( #e$itate 7/88-7/8@8 'cm@0 iar petr( temperat(r" 8///@8 8CH

Va!%area #i&i)i(ii petr( #e$itate e$te 80 888'cm0 iar petr( temperat(r" e$te 7 8CH

Temperat(ra #e eta!%are1 8CH

Citirea #ea$(pra mei$c(!(iH

L('imea t%ta!" @8 Q 8 mm

(#).6.1;.Densimetru (#).6.$


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(#).6.$1.0nalizor de lapte profesional =actotar > .un?e @erber

Aa!i)%r(! #e !apte Lact%$tar repre)it" ( ec6ipamet #e !a+%rat%r petr( #etermiareaparametri!%r ,i)ic%c6imici ai !apte!(i/

Ta+e! 3/

$aracteristici tehnice7

Po%uc!#5#!&!e Pr%+e itr%#($e !a aa!i)" > mai m(!t #e @8 aa!i)e pr%+e pe%r"?

Volu+ul poe# Apr%ximati& 7 m!

Co,ec!&e PC Iter,a." $eria!"0 4/88 Ba(#0 $%,tare ic!($0 Priter1iter,a." para!e!"

Al#+e,!&e ee& @8 V 7F8 VA0 8 38 ;)0 7 V DC

D#+e,0#u,# 88 x 88 x 38 mm

eu!&!e Apr%ximati& 7 '

Ta+e! 3/2ndicii determinai de =0$'9'0A prin algoritmi de calcul

Co,0!#!ue,#&% %e%#'ol5&e

Repe!l#!&!e

"0#+e (&! ( 8/87 G 808G

Po!e#," Po!e#, P 8/87 G 808@G

L&c!o'" L&c!o0e L 8/87 G 808@G

SN( @&-@ee % +&!!eSu0!&,& u0c&!" @"" )"0#+e 0ol#%e

,e)&0e

8/87 G 808G


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Pu,c! %e co,)el&e 80887C 8088C

C( a9(t%r(! ace$t(i aparat $e p%t ca!i+ra *i mem%ra 8 #e tip(ri #i,erite #e pr%+e0 c(m ar ,i1!apte!e #e &ac"0 !apte!e #e &ac" e,iert0 !apte!e #e're$at0 !apte!e #e %aie0 $m5t5"0 etc/

Petr( %+.ierea ca*(!(i $-a (ti!i)at !apte pr%&eit #e !a % $i'(r" $(r$"0 iar ,i'/ 3/ $(tpre)etate caracteri$tici!e !apte!(i materie prim"/

(#).6.$$.Parametrii fizicoBchimici ai laptelui rezultai n urma analizrii cu a5utorul=0$'9'0A-ului

6.3.2.". Determinarea principalelor caracteristici izico-c!imice ale produsului nouobinut (ca cu busuioc i msline)

Ap&&!u& ,ece0&"Aparat #e tip :%%#Sca >,i'/3/@? care are (rm"t%are!e pr%priet".i1

(#). 6.$/#ood$can% Dair& 'nal&ser


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Ta+e! 3/3Date privind performana aparatului

I,!e5&l %e +"0u&e F8 - 788 mE>&c!#!&!e& lu,)#+## %e u,%" 8/ mPec#'#& lu,)#+## %e u,%"


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6.7. Re'ul!&!e /# %#0cu##

Date!e %+.i(te $-a( pre!(crat $(+ ,%rm" #e 'ra,ice petr( a permite %+$er&areacaracteri$tici!%r ,i)ic% c6imice a!e materiei prime *i a!e pr%#($(!(i %( %+.i(t/

Ta+e! 3/ 807 G?/

Ta+e! 3/7Proprieti fizico-chimice ca cu msline i busuioc ! (Proba !&

C&&c!e#0!#c# V&lo#

r"$ime


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Ta+e! 3/7@Proprieti fizico-chimice ca cu msline i busuioc ) (Proba )&

C&&c!e#0!#c# V&lo#

r"$ime /


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(#).6.


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(#).6.1.Diagramaconinutului de sare

= c%mpara.ie c( (mi#itatea0 c%.i(t(! #e $are #i +r5)" cre*te p(.i prime!e )i!e0(rmat" #e % cre*tere +r($c" iter&a!(! #e )i!e -/

Sarea are r%!(! #e a (*(ra e!imiarea )er(!(i #i ma$a +r5)ei/

Pri p"$trarea $aram(r"0 +r5)a *i m("t".e*te ca!i".ii!e %r'a%!eptice *i *i m"re*te #(rata#e c%$er&are/

= )i(a F0 c%cetra.ia $a!i" e$te $c")(t" #at%rit" ,apt(!(i c" aa!i)e!e e,ect(ate pe +r5)" $-a( rea!i)at #i p%r.i(i #i,erite0 iar $"rarea e$te e(i,%rm"/ S"rarea $e ,ace #e !a exteri%r $preiteri%r0 ceea ce $eam" c"0 $pre exteri%r +r5)a are % c%.i(t #e $are #e 7073 G0 iar $preiteri%r c%.i(t(! e$te #e (mai 80 G/

(#).6.$. $onservarea br,nzei n saramur ( dup " zile&


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Ce!e mai c%$i#era+i!e m%#i,ic"ri !e $(,er" pr%teie!e0 'r"$imi!e *i !act%)a/ Ace$tea $(,er"$c"#eri $emi,icati&e0 c6iar c( 78 G ca)(! pr%teie!%r >,i'/3/@/ Varia.ia c%.i(t(!(i #e$(+$ta.e pr%teice?/ Caracter(! ace$t%r tra$,%rm"ri e$te #etermiat #e pr%ce$e!e micr%+i%!%'ice*i +i%c6imice ce $e #e$,"*%ar" ma$a #e +r5)"0 care !a r5#(! !%r $(t #etermiate #e % $erie #e

,act%ri0 prec(m1 c%.i(t(! #e $are *i ap" #i +r5)"0 c%mp%)i.ia micr%,!%rei0 c%#i.ii #emat(rare/

YMat(rareaW ace$tei +r5)e $e ,ace #irect i $aram(r" petr( a $e %+$er&a caracteri$tici!e,i)ic%-c6imice *i %r'a%!eptice a!e %(!(i pr%#($/

(#).6..Cariaia coninutului de grsime

= prima etap"0 'r"$imea $e #e$c%mp(e $(+ ac.i(ea !ipa)ei '!iceri" *i aci)i 'ra*i/ Diaci)ii 'ra*i $e ,%rmea)" a!#e6i#e *i cet%e0 care imprim" '($t *i ar%m" $peci,ic" +r5)ei/

C%.i(t(! #e 'r"$ime i6i+" %arec(m #e)&%!tarea +acterii!%r #e p(tre,ac.ie #at%rit" ac.i(iiaci)i!%r !i%!eic *i %!eic0 care $e ,%rmea)" ca re)(!tat a! 6i#r%!i)ei 'r"$imii/


43


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(#).6.7.Cariaia coninuului de lactoz

C%.i(t(! #e !act%)" #i +r5)" e$te c%ti(" $c"#ere0 #e%arece acea$ta trece )er/Lact%)a e$te $(p($" ,ermet"rii c" #i timp(! pre'"tirii !apte!(i petr( c%a'(!are0 ap%i

timp(! c%a'(!"rii0 pre!(cr"rii c%a'(!(!(i *i ,%rm"rii +r5)et(ri!%r/S(+ ac.i(ea e)ime!%r pr%#($e #e +acterii!e !actice cea mai mare parte #i !act%)" e$te

tra$,%rmat" aci# !actic prime!e #e %re0 re$t(! #e !act%)" ,ii# ,ermetat" (rm"t%are!eF-78 )i!e/

Aci#itatea cre*te ,%arte m(!t *i !ip$a $(+$ta.e!%r (triti&e +acterii!e #i$par0 e!imi5# (c%mp!ex #e e)ime0 care #e$c%mp( at5t pr%teie!e c%a'(!(i0 c5 *i ce!(!e!e micr%%r'ai$me!%r/

Dat%rit" ace$t(i ,apt0 aci#itatea c%a'(!(!(i cre*te0 ceea ce c%#(ce !a $t%parea #e)&%!t"rii+acterii!%r #e p(tre,ac.ie/

Aci#(! !actic ,%rmat reac.i%ea)" c( #i,eri.i c%mp(*i ai c%a'(!(i0 ,%rm5# %i $(+$ta.e cec%#i.i%ea)" pr%priet".i!e %r'a%!eptice a!e +r5)ei/

= prim(! r5#0 aci#(! !actic itr" rec.ie c( paraca)eiat(! #e ca!ci(0 ,%rm5# paraca)eiatm%%ca!cic0 care0 ,ii# $%!(+i! $are0 are pr%prietatea #e a $e (m,!a0 (i# +%a+e!e #e c%a'(!tr-% pa$t" e!a$tic"0 (i,%rm" *i c%mpact"/

S(+ ac.i(ea aci#(!(i !actic $"r(ri!e a%r'aice #e ca!ci( *i ,%$,%r $(t tra$,%rmate $"r(ri$%!(+i!e/ Aci#(! !actic reac.i%ea)" *i c( pr%#($e!e #e #e$c%mp(ere a!e $(+$ta.e!%r pr%teice/ =ace$t ,e! $e pr%#(ce e(tra!i)area treptat5 a aci#(!(i !actic0 ceea ce permite me.ierea c%#i.ii!%r,a&%ra+i!e petr( acti&itatea (!teri%ar" a +acterii!%r !actice/


4


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(#).6.8/ Cariaia coninutului de substane proteice

= ca)(! +r5)ei pr%a$pete >)i(a 8?0 $(+$ta.e!e pr%teice $(t 're( $%!(+i!e ap"0 a*a#ar *i

're( #e 6i#r%!i)at #e c"tre $(c(! 'a$tric/S(+ ac.i(ea e)ime!%r pr%te%!itice paraca)eia e$te $(p($" 6i#r%!i)ei0 #e$c%mp(5#(-$e $(+$ta.e mai $imp!e0 care $(t $%!(+i!e ap"/

De$c%pm(erea $(+$ta.e!%r pr%teice $e #e$,"*%ar" #(p" (rm"t%area $c6em"1

Pr%teie ap" pr%tea)e pept%e pepti#e ami%aci)i

Paraca)eia $e #e$c%mp(e p5" !a i&e! #e pr%tea)e *i pept%e +r5)"/


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6.8. Co,clu'##

St(#i(! pri&i# rea!i)area ((i pr%#($ !actat %(- ca* c( m"$!ie *i +($(i%c0 $-a #%&e#it a (,ii ( e*ec0 ci #imp%tri&"0 re)(!tate!e ,ia!e a( ,%$t m(!.(mit%are/

S-a (rm"rit e&%!(.ia ace$t(ia pe parc(r$(! a F )i!e petr( a i $e %+$er&a $ta+i!itatea timp

tr-% $%!(.ie $a!i"/Ca*(! pr%a$p"t a ,%$t c%m+iat c( m"$!ie *i +($(i%c0 itr%#($ $arm(r" *i .i(t !a

temperat(ra #e -3 8C0 iar re)(!tat(! ,ia! a ,%$t %+.ierea ((i pr%#($ #e ca!itate0 c( pr%priet".i%r'a%!eptice #e%$e+ite/

= (rma aa!i)ei $e)%ria!e a pr%#($(!(i $-a p(t(t %+$er&a c%$i$te.a m%a!e0 (t%a$" aca*(!(i/

(#).6.6.$aul cu msline i busuioc

a& caul proaspt+ nesupus srrii< b& caul supus srrii (dup zile&

= $ec.i(e pr%#($(! ( pre)it" %c6i(ri #e ,ermeta.ie !actic"0 ma$a e$te c%mpact"0 #ar *i$(,iciet #e tare c5t $" $e p%at" t"ia0 ,"r" a $e $,"r5ma >,i'/3/@


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Mir%$(! e$te $peci,ic +r5)ei .i(te !a $aram(r"0 iar '($t(! e$te #e%$e+it #at%rit" ar%mei #e+($(i%c pr%a$p"t *i a! m"$!ie!%r e're/

Pr%#($(! are % &a!%are ,ia!" a p;-(!(i 0 ceea ce $eam" c" $e ca#rea)" 'r(pa+r5)et(ri!%r m%i/

Aci#itatea pr%#($(!(i e$te #e 78 8T0 ceea ce $eam" c" e&%!(.ia pr%#($(!(i $aram(r" a

,%$t ,a&%ra+i!"0 iar pr%ce$(! #e #e'ra#are ( a cep(t/E$te % +r5)" $emi'ra$" >0

Cercetare experimentala privind dezvoltarea unui nou produs cas cu masline si busuioc

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