High oleate oils

High-oleate oils are highly desirable for food use. They are stable to oxidation and therefore good for frying and can be stored without spoilage for a longer time than oils with high polyunsaturate content. Oleate is the prevalent fatty acid in the... 

Mediterranean diet based on olive oil and popularly thought to be the best fat to consume for long-range health benefits. The oxidative stability of high-oleate oils also meets industrial needs (17). Such oils are useful in cosmetic applications as they are established to be safe for consumption. They are useful as sources of... 

Soybean oil contains about 21% of the monounsaturate oleate. Studies have shown that the oxidation rate of oleate is much slower than that of the polyunsam-rates, linoleate and linolenate, which oxidize quickly and are the major contributors to the poor stability of soybean oil (287, 323). A diet high in monounsaturates may help to reduce elevated levels of total plasma cholesterol without reducing the high-density lipoprotein-cholesterol level (324). Therefore, high-oleate soybean oil is not only more stable than conventional soybean oil (275), but also has enhanced nutritive value. 

Other reactants have been used for the production of cocoa butter equivalents by the enzyme technique. For example products enriched in StOSt and POSt can be produced by reaction of olive high oleate safflower and sunflower oils, sal fats and shea dleine... 

Su, C. P.J. White. Flavor stabiliry and quality of high-oleate and regular soybean oil blends during frying./. Am. Oil Chem. Soc. 2004a, 81, 853—859. 

The saturated CFAM, isolated by silver-ion HPLC from high-oleate and normal sunflower oils used in a small-seale frying operation of potato strips (7,23), were shown by GC to be composed of two different groups of CFAM (Fig. 6). The first group (q-x) was presumably derived from oleate and constituted a greater proportion of the total CFAM in high-oleate ( 67%) compared with normal ( 25%) sunflower... 

Fig. 6. Partial gas chromatograms of saturated cyclic fatty acid methyl esters derived from (A) high-oleate sunflower oil and (B) normal sunflower oil. A Cp-Wax 52CB (25 m x 0.25 mm i.d., 0.20 pm film thickness) capillary column was used. There was an initial temperature of 170°C for 5 min followed by a program at 2°C/min to 210°C. Peaks q-x were monocyclic acids, and later eluting peaks had bicyclic structures. Source Ref. 7.

Teng, K. T., Voon, P. T., Cheng, H. M., and Nesaretnam, K. (2010). Effects of partially hydrogenated, semi-saturated, and high oleate vegetable oils on inflammatory markers and lipids. Lipids, 45(5), 385-392. 

Safflower. Most safflower varieties produce oil with linoleate concentrations of 65-75% (Table 4.2), but varieties have been discovered that produce about 75% oleate (Table 4.3) (Knowles, 1989 Salunkhe et al., 1992). Since oleate and linoleate make about 75% of the acyl groups in these two varieties, they bear a reciprocal relation - if one is high the other must be low. Knowles (1989) has shown that one gene controls the expression of either high oleate or high linoleate. 

As an alternative to direct production using yeast technology, there are prospects of producing the correct fatty acyl formulation by transesterify-ing a cheap oil such as mid-palm oil fraction with oleic acid or its various esters including trioleoylglycerol derived from high-oleate sunflower seed oil and an appropriate microbial Upase (see chapter 12 for further details). 

Pili kernel contains about 70% oil and it is high in saturated fat, with composition varying from 44% to 60% oleate and 33-38% palmitate. The oil can be fractionated to yield a high melting oil similar to cocoa butter and a low melting oil similar to ohve oil (Kakuda et al., 2000). This oil content however varies depending on several factors such as the extent of dryness of the kernel and... 

The pili tree is reminiscent of oil palm in terms of producing an fruit with oils of differing, valued composition in the kernel and the pulp. The pulp oil of pih is similar to olive oil with its high oleate content. The pUi kernel oil can be... 

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