B-Carotene was extracted and quantitatively analyzed accord- ing to the method we previously published (Cornacchia and Roos 2011a). A 2-step procedure was used for the extraction of B-carotene from the emulsions. The emulsions were preliminarily destabilized by mixing them with 1.5 mL ethanol. In the first step samples were saponified by adding 1 mL of saturated potassium hydroxide in methanol and mixing for 10 s to separate the lipid car- rier (saponized fracion) from the carotene (unsaponised). The mix was heated to 45 oC for 30 min to increase the reaction rate. In the second step, the nonpolar carotene was extracted with 2 mL of n-hexane containing 0.1% (w/v) BHT for 3 times (mixing time 30 s). Possible residual water in the extract was removed by adding a small amount (approximately 0.5 g) of anhydrous sodium sulfate. The B carotene extract in n-hexane was then quantified spectrophotometrically (Varian Cary 300 Bio UV-Visible Spec- Inc., Middelburg, The Netherlands) us ing the maximum absorbance wavelength of B-carotene, hmax 450 nm.