Home > Articles > Published articles > Methods to determine the quality of acid oils and fatty acid distillates used in animal feeding |
Date: | 2021 |
Abstract: | Acid oils and fatty acid distillates are by-products from the refining of edible oils and fats. They are used as feed ingredients, but their highly variable composition sometimes affects the productive parameters of the animals. Thus, their quality control and standardization are necessary. The official methods recommended for crude and refined fats and oils must be modified to give reliable results when applied to acid oils and fatty acid distillates. This article summarizes the drawbacks that were encountered during the setup of the analytical methods and how were they overcome by adapting the methods to these type of fat samples. Some methods such as the determinations of fatty acid composition, tocopherol and tocotrienol content, unsaponifiable matter, acidity and peroxide value had to be minimally adapted. However, others such as the determinations of moisture and volatile matter, insoluble impurities, lipid classes and p -anisidine value showed important drawbacks that required a more significant adaptation. |
Grants: | Ministerio de Economía y Competitividad AGL2015-64431-C2-2-R Ministerio de Economía y Competitividad BES-2016-077486 Ministerio de Economía y Competitividad RYC-2017-23601 |
Rights: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades. |
Language: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Subject: | Analytical methods ; Quality control ; Fat by-products ; Feed ingredients ; AO, acids oils ; P -AnV, p -anisidine value ; FA, fatty acids ; FAD, fatty acid distillates ; FAME, fatty acid methyl esters ; FFA, free fatty acids ; HPLC, high performance liquid chromatograph ; I, insoluble impurities ; M, moisture ; MIU, sum of moisture, insoluble impurities and unsaponifiable matter ; RSD, relative standard deviation ; T, tocopherols ; T3, tocotrienols ; U, unsaponifiable matter ; U/S ratio, unsaturated/saturated fatty acid ratio |
Published in: | MethodsX, Vol. 8 (april 2021) , ISSN 2215-0161 |
10 p, 515.6 KB |