Stability of short path evaporation treated oils
The present invention relates to a process for increasing the oxidative stability of short path evaporated oils, by adding to short-path evaporated treated oil at least one other oil. It further relates to a composition comprising short-path evaporated treated palm oil and, at least one other oil. Furthermore, it relates to the food products comprising these oils with improved oxidative stability.
1 . A process for oxidatively stabilizing an oil treated with short path evaporation (SPE), the process comprising:
adding to SPE-treated oil 5 wt % or more of at least one other oil by weight of combined oils, forming an oxidatively stabilized oil, while the SPE-treated oil has a peroxide value of below or equal to 1.5 milli-equivalent peroxide/kg and peroxide value is measured according to the AOCS Method Cd 8b-90,
wherein the SPE-treated oil comprises SPE-treated palm oil and the at least one other oil comprising a refined palm oil not treated with SPE,
wherein the SPE-treated oil has been obtained from at least one of a SPE treatment prior to at least one refining or processing step, a SPE treatment after at least one refining or processing step, or combinations thereof, and
wherein the process increases the oxidative stability of the oxidatively stabilized oil by 20% or more, relative to the SPE-treated palm oil, as measured by the Oil Stability Index (OSI).
2 . The process according to claim 1 , wherein the at least one refining or processing step is a bleaching step.
3 . The process according to claim 1 , wherein the at least one refining or processing step is a deodorization step.
4 . The process according to claim 1 , wherein the at least one refining or processing step comprises degumming, alkali refining, bleaching, deodorization, interesterification, or a combination of two or more thereof.
5 . The process of claim 1 , wherein the SPE-treated oil comprises less than 0.8 ppm of propanol components comprising chloropropanols, chloropropanol fatty acid esters, free epoxypropanols, epoxypropanol fatty acid esters, and combinations thereof.
6 . The process of claim 1 , wherein the oxidatively stabilized oil comprises 75 wt % to 90 wt % of the SPE-treated oil.
7 . The process of claim 1 , wherein the at least one other oil is present in the oxidatively stabilized oil in an amount of 10 wt % to 25 wt %.
8 . The process of claim 1 , further comprising adding to the SPE-treated oil at least one anti-oxidant in an amount of 5 to 5000 ppm, by weight of the oxidatively stabilized oil.
9 . The process of claim 8 , wherein the at least one anti-oxidant is added to the SPE-treated oil within 1 minute and 15 days of being treated by SPE.
10 . The process of claim 8 , wherein the at least one anti-oxidant is added to the SPE-treated oil above a melting point of the at least one anti-oxidant.
11 . The process of claim 8 , wherein the at least one anti-oxidant is selected from butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT), propyl gallate (PG), tertiary-butylhydroquinone (TBHQ), citric acid, malic acid, succinic acid, tartaric acid, ascorbic acid, ascorbyl palmitate, erythorbic acid, carotenoids, synthetic tocopherols, rosemary extract, green tea extract, lecithin, tocopherols, tocotrienols, phytosterols, phytostanols, olive oil phenolic compounds, sesamin, sesamol, sesamolin, sesaminol, sesamolinol, and combinations, salts, esters, and anhydrides thereof.
12 . The process of claim 1 , wherein the process increases the oxidative stability of the SPE-treated oil by 40% or more, as measured by the Oil Stability Index (OSI).
13 . The process of claim 1 , wherein the SPE-treated oil comprises less than 3% of di-acyl glycerides.