7/23/2019 2. KETIDAKMURNIAN & SIFAT KIMIAWI LEMAK.ppt

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 ANALSIS KETIDAKMURNIAN & SIFAT-2

KIMIAWI LEMAK

Dr. Ir. Hardoko

FAKULTAS PERIKANAN & ILMU KELAUTAN

UNIVERSITAS BRAWIJAYA

7/23/2019 2. KETIDAKMURNIAN & SIFAT KIMIAWI LEMAK.ppt

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SUMBER KETIDAKMURNIAN LEMAK

•  Ar 

• S!"#a$a %oa'!• Ba(a" 'dak ar)'

• Ba(a" 'dak '!r*a+)"ka"

• Tra,! "!ra

• Sa+)"

BAHAN TIDAK LARUT adaa( ko'ora" & +a(a"-2 a" #'dk ar)' daa /!'ro!) !'!r 

BAHAN TIDAK TERSABUNKANadaa( +a(a" # ar)' daa !ak 'a/ 'dk da/a'

d*a+)"ka" o!( K0H da" "o" %oa'! *!'!a(/!a"a*a" 1o3.

S'!ro4 ako(o d AL ra"'a /a"5a"4 (drokar+o"

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PENETAPAN ASAM V0LATIL 

•Ba"a" R!,(!r' adaa( 5)a( ar)'a" aka.6N # d/!r)ka" )'k !"!'raka" a*a-2!ak %oa' # ar)' ar # dd!*'a* dar 7 !ak /d ko"d* '!r'!"').

• Ba"a" /o!"*k! ad 5)a( ar)'a" aka.6N # d/!r)ka" )'k !"!'raka" a*a-2!ak # 'dk ar)' d ar # dd!*'a* dr 7 !ak /d ko"d* '''.

• Ba"a" Kr*,("!r ad 5 ar)'a" aka .6N# d/!r)ka" )'k !"!'raka" a*a-2 !ak%oa' ar)' ar # !+!"')k ara /!rak ar)'ar # dd!*'a* dr 7 !ak /d ko"d* '''.

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BAHAN TIDAK TERSABUNKAN

 A"a** 8

  - !"#a+)"ka" !ak d +a*a 9K0H: da" *a+)" #a'!r+!"')k d!k*'rak d /!ar)' # *!*)a 9(' /!'ro!))'k "#ak "a+a'4 !' !'!r )'k *!)a 5!"* !ak:.

  - Ek*'rak d,), d ar da" +a*a )'k !"(a"ka"*a+)""#a4

- D!%a/ora*

 +a(a" 'dk '!r*a+)"ka"

SABUN- T!r+!"')k dr a*a !ak +!+a* d +a*a *!aa /ro*!*

/!)r"a"

- 7 // d/' !r)*ak !ak da" !"a") (dro!"a*- D(a"ka" d !",), !ak d ar dk)'/!"!r"a"*!+!) +!a,(" d a+*or+!"

-  A"a** 8 !k*'rak* d ako(o a'a) H3 !",!r &k)a"''a*"#a dak)ka" d kad)"a" K a'a) Na

- P!")k)ra" ,!/a' d ko"d)k'%'a*

7/23/2019 2. KETIDAKMURNIAN & SIFAT KIMIAWI LEMAK.ppt

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 ANALSIS SIFAT-2 KIMIAWI LEMAK

• K!a*aa" 9+a"a" a*a:

• Sa/o";ka*

• K!'dak5!")(a"

• K!r)*aka" ak+a' ok*da*  6. Ba"a" TBA

  2. Ba"a" /!rok*da

  <. U5 *'a+'a* !ak 

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KEASAMAN 9BILAN=AN ASAM:

• Dd!;"*ka" *+ 5)a( K0H #

d+)')(ka" )"')k !"!'raka" aa !ak+!+a* ddaa 6 ra +a(a".

• D/' /)a d"#a'aka" *+ > a*a !ak

+!+a* do"a" ddaa !ak 9*a4 /d"#ak k!a/a *a$' d"#a'aka" *+ a*a

/a'a'. M"#ak k!a/a *+ a)ra'4 d:

•  A"a** 8 !"'ra* *a/! d /o'a*)(drok*da *a/a $ar"a !ra( 5a+)

;!"o/'a" !"(a"

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SAP0NIFIKASI 9Ba"a" /!"#a+)"a":

•  Adaa( +a"#ak"#a K0H # d+)')(ka" )'k

!"#a+)"ka" 6 *a/!

• S!r" d"#a'aka" 5)a *+ !k)%a!"*

/!"#a+)"a" # !r)/aka" +a"a"

/!"#a+)"a" d+a 7?.6 9@ !k)%a!"* darK0H:.

• M!"#a'aka" +a"#ak"#a a*a !ak #

'!r!*'!r;ka* daa *!rda

•  A"a** 8 !r!;)k* *!5)a( *a/! !ak d

K0H da" k!!+(a" K0H d'r'a* d a*a.

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KETIDAKJENUHAN 9Ba"a" Iod:

• #a') +a"#ak"#a (ao!" 9d"#a'aka" *+ od": # d/' dka' o!(

!ak.

• M!'od! a"a**8 !'od! W5*4 Ha")*4 & Ro*!")"d-K)("(!"".

P!r+!daa""#a '!r!'ak /d 5!"* *!"#a$a /!"(ao!" # d)"aka"

9W5* d od" o"okorda4 Ha")* d od" o"o+roda4 R-K d

/rd" *);a' +roda:.

• P!r!ak* W5* da" Ha")* '!ra) k!ra* d *'!ro & +(" 'dk

'!r*a+)"ka" # d/' !"#!+a+ka" r!ak* *)+'')* da" /!"a+a(a"

(ao!" /d k' ra"ka/4 *( k)ra" ,o,ok )'k +a(a" # +!rkadar

*'!ro & +a(a" 'dk '!r*a+)"ka" '".

• Ba"a" od d/' d5adka" /ara!'!r 5)a( k' ra"ka/ # ,)k)/

k)a"''a;4 +a k' ra"ka/"#a 'dk '!rko"5)a* da" a"a** dak)ka"

d (ao!" +!r!+(a" 'a"/a ada"#a ,a(a#a.

• M!'od! a" )'k !"!ra k!'dak5!")(a" !ak 8 Ba"a" 'o*a"o!"

9S3N:2. Na)" +a !ak !/)"#a k!'dak5!")(a" a"da4

r!ka* /!"a+a(a" k)ra" *!/)r"a. 3o,ok )'k a*a o!a'4

"o!a'4 da" "o!"a'.

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BILAN=AN TBA 9'(o+ar+')r, a,d:

• Da*ar"#a adaa( /rod)k ok*da* !ak ao"ad!(da

# d 2 o!k) TBA aka" '!rko"d!"*a* !+!"')kko/!k* +!r$ar"a !ra(.

• I"'!"*'a* $ar"a # '!r+!"')k *!+a"d" d!"a"

ao"ad!(da # '!r+!"')k.

UJI KETEN=IKAN 8 UJI KREIS• Pr"*/ 8 Jka !ak '!rok*da* +!r!ak* d

/(oro),"o d *)a*a"a a*a aka" '!r+!"')k $ar"a

!ra(.

• War"a !ra( # '!r+!"')k +!rkor!a* d /!""ka'a"/rod)k !/(#dr" ad!(d a'a) ao"ad!(d *+ /rod)k

ok*da* /d.

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BILAN=AN PER0KSIDA

• Da"a** d !")k)r od # d+!+a*ka" o!(ar)'a" /o'a*) odda 5!")( !a) r!ak*ok*da* o!( /!rok*da daa !ak ddaa!d) a*!'a' koro;or

• Iod # d!/a*ka" d''ra* d *od) 'o*);a'*'a"dar.

• M!r)/aka" "dka'or 'r5ad"#a d!ra5a' ok*da*da" k!'!"ka" '!'a/ 'dak da/a' d5adka""dka'or *'a+'a* !ak.

• Da/a' d'!ra/ka" )'k !ak4 "#ak da"arar". U'k arar" ;a*! ar & !ak/*a(ka" d)) *!+!) da"a**.

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UJI STABILITAS LEMAK

• M!'od! o%!" a'a) *,(aa 8 *a/! d*/a" /d *)()

?<o3 da" +a)"#a da"a** *!,ara ora"o!/'k *a/ak!'!"ka" d/a' d'!ra.

•  A0M 9A,'%! 0#!" M!'(od: 8 !ak d/a"a*ka" da")dara d')/ka" !!$a'"#a *a/a +a"a" /!rok*da"ak !",a/a "a # da"a/ !r)/aka" a$a

'!r5ad"#a ok*da*.• Kor!a* A0M d k!adaa" *!+!"ar"#a +( r!"da(

d+a"d" !'od! o%!"4 kr" 8

  - *)() !'od! o%!" +( !"d!ka' *)() /!"#/a"a" #

*!+!"ar"#a.  - k!'!"ka" 9+)ka" +a"a" /!rok*da: r/k /ara!'!r

/!"!"') '!r5ad"#a ok*da*

  - ko"d* !k*'r /!")/a" )dara k!r" 'dak '!r5ad.