Page 98 - Natural Antioxidants, Applications in Foods of Animal Origin

Natural Antioxidants: Occurrence and Their Role in Food Preservation 77
VetBooks.ir bran and rice germ which consists of a mixture of ferulic acid esters of PS

and triterpene alcohols (Fig. 2.11). There are numerous reports indicating
the benefits, efficacy, and safety of γ-OZ (Rukumini & Raghuram, 1991).

26

0 0
""'
""'
H,co~ o H,CO~ o
I
I
HO .&- 28 29 HO .&-
cycloartenol ferulate 24-methylenecycloartenol ferulate

0 0
3
H CO~""' H3C0~ 0
I
o
HO .& HO,Jl--J
campesferol ferulate ~-sitosterol ferulate

0
H3CO~O
HO~
cyclobranol ferulate
FIGURE 2.11 Different components of γ-oryzanol.

2.15.1 HEALTH BENEFITS OF ORYZANOL

Wilson et al. (2007) reported that γ-OZ reduced plasma cholesterol in hyper-
cholesterolemic hamsters. Clinically, oral intake of rice bran oil (containing
naturally occurring γ-OZ) has been shown to alleviate hypercholesterolemia
and hyperlipidemia. γ-OZ has been advocated as treatment for relieving
menopausal symptoms. Besides, Oka et al. (2010) reported that cycloartenyl
ferulate, a component of rice bran oil-derived γ-OZ, inhibits mass cells
degranulation. The anti-inflammatory effects of γ-OZ in ulcerative colitis
induced in mice have also been reported (Rukumini & Raghuram, 1991).