Abstract
ACIDULATED soybean-oil soapstock (ASS) has recently become the main fat supplement for poultry feeds in Israel. This by-product of the edible oil industry is obtained from the alkali-neutralization of the crude oil in the form of raw soapstock (a mixture of soaps, neutral oil, water, sterols, pigments and other minor constituents). This rather unstable product is converted to acidulated soapstock by treatment with an excess of hot aqueous sulfuric acid.Most of the “impurities” which are removed from the crude oil by alkali-refining accumulate in the acidulated soapstock. Compared to crude soybean oil (CSO), ASS contains high levels of free fatty acid (over 50%), unsaponifiable matter and oxy-fatty acids (Bornstein and Lipstein, 1963), and is also rich in carotenoids (Budowski et al., 1964).Previous work of this labortory (Bornstein and Lipstein, 1961, 1963), as well as that of Sibbald et al. (1962), has shown that ASS is comparable to tallow…
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
