Peroxide value in palm oil

Quality and Identity Characteristics of Palm Oil Part 1 Quality Characteristics. 06 mg KOHg Oil.

Quality is an important attribute of edible oil products and it is a very important attribute from the trade point of view.

Peroxide value in palm oil. Quality and Identity Characteristics of Palm Oil Part 1 Quality Characteristics. The table below shows the parameters for Identity and Quality characteristics of palm oil. Quality is an important attribute of edible oil products and it is a very important attribute from the trade point of view.

Cooking oil released by Codex Stan 210-1999 Refined Bleached Deodorization Palm Oil is 10-15 milliequivalents of active oxygenkg oil. Base on this standard treated used cooking oil. Below are some explanations on the Quality Characteristics of Palm Oil.

Peroxide Value PV Oxidation of lipids is a major cause of their deterioration and hydroperoxides formed by the reaction between oxygen and the unsaturated fatty acids are the primary products of this reaction. Peroxide value is another important parameter used to assess the quality of palm oil which is an indicator of the lipid peroxidation or oxidative degradation levels. It is used to assess the stability or rancidity of fats by measuring the amount of lipid peroxides and hydroperoxides formed during the initial stages of oxidation.

Soybean oil or any other edible oilcooking oil with a peroxide value of 462 is acceptable for human consumption. Peroxide value above 5 is not acceptable for human consumption. 06 mg KOHg Oil.

Cold pressed and virgin oils. 40 mg KOHg Oil. 100 mg KOHg Oil.

Up to 10 milliequivalents of active oxygenkg oil. Cold pressed and virgin oils. Up to 15 milliequivalents of active oxygenkg oil.

This method describes the determination of peroxide values for animal oils and fats vegetable oils and fats as well as for flavour and fragrance materials. The peroxide value is a parameter specifying the content of oxygen as peroxide especially hydroperoxides in a substance. The peroxide value is a measure of the oxidation present.

Peroxide value PV Primary oxidation processes in oil mainly form hydroperoxides which are measured by the PV. In general the lower the PV the better the quality of the oil. However PV decreases as secondary oxidation products appear Figure 1.

Most customers will require a PV of less than 10 in marine oils but PV may need to. Refined sun flower oil the oxidation rate of the samples exposed to daylight or kept in darkness was followed for 60 days. PV exceeds the maximum recommended value of 10 meqkg after 45 days for sunflower oil exposed to daylight.

The samples stored in the dark reached the value of 868 mEqkg at the end of the investigation period. The peroxide values PV of all the cold pressed rapeseed oils tested from different varieties ranged from 038 to 084 meq O 2 kg oil. Generally the PV of fresh vegetable oils is less than 10 meq O 2 kg oil.

High temperature visible light and oxygen will promote primary oxidation which increases the PV. Fresh crude palm oil of high quality with a maximum score showed a zero peroxide value a zero p -anisidine value and a free fatty acid level of 02. It had a strong pleasant sweet caramel-like flavor.

The levels of free fatty acids were higher in samples that had been stored for a long time. A rapid Fourier transform infrared FTIR spectroscopic technique coupled with fixed NaCl cell 1 mm pathlength was developed to measure peroxide value PV in crude palm oil CPO and crude palm kernel oil CPKO. Calibration standards were prepared by oxidizing CPO in a fermentor at 60C over a period of 24 h.

62Weigh5 001 g of sample into a 100-mi beaker. Cool the sample in the ice-water bath 41 and add 20-mi acetone 51 cooled to 0C. Break up the sample into small particles using a glass rod and allow the particles of lecithin to settle.

63Transferthe supernatant solution through a filter paper to a tared flask. PEROXIDE VALUE OF OILS AND FATS The Peroxide Value of various categories of oils and fats shall be as follows. I Refined oils up to 10 milliequivalents of active oxygenkg oil except olive oil ii Cold pressed and virgin oils up to 15 milliequivalents of active oxygenkg oil except olive oil.

A near infrared NIR spectroscopic method was developed to measure peroxide value PV in crude palm oil CPO. Calibration standards were prepared by oxidizing CPO in a fermentor at 90C.