Food Chemistry

(Sean Pound) #1
14.3 Origin of Individual Fats and Oils 651

Table 14.11.


Oils low in palmitic acid and rich in oleic and linoleic acids


Sunflower

Soya

Peanut

a

Rapeseed

b

Sesame

Safflower

Linseed

Poppy

Walnut

(Helianthus

(Glycine

(Arachis

(Brassica

(Sesamum

(Carthamus

(Linum usita-

(Papaver

(Juglans

annuus

)


max.

)


hypogaea

)


napus

)


indicum

)


tinctorius

)


tissimum

)


somniferum

)


regia

)


Seed oil

content

25–30


18–23


42–52


ca. 40

45–55


32–43


32–43


40–51


58–71


(weight-%)
Solidificationpoint (

◦C)



18 to


20



8to


18



2to

+


30to


2



3to


6



13 to


20



18 to


27



15 to


20



15 to


20


Average fatty acid composition (weight-%)16:0

6.


510 10 4 8


.56 6


.^59


.^58


18:0


5


5


3


1.


54


.^52


.^53


.52 2


20:0


0.


50


.^51


.^50


.^50


.^50


.50 0 1


22:0


0


0


3


0


0


0


0


0


0


18:1 (9)


23


21


41


63


42


12


18


10


.^516


18:2 (9,12)


63


53


35


.520 44


.578 14


76 59


18:3 (9,12,15)


<


0.


58 0 9 0 0


.558 1 12


20:1 & 20:2


1


3.


51 1 0 0


.50 0 0


22:1 (13)


0


0



0.


50 0 0 0 0


a
African peanut oil.

b

Canola-type oil (practically free of erucic acid).
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