A Greener Alternative Titration Method for Measuring Acid Values of Fats, Oils, and Grease. (27th August 2019)

• Record Type: Journal Article
• Authors: Zhang, Junsong; Lu, Mingming; Ren, Fumin; Knothe, Gerhard; Tu, Qingshi
• Is Part Of: Journal of the American Oil Chemists' Society. Volume 96:Number 10(2019)
• Page Start: 1083
• Page End: 1091
• Publication Date: 2019-08-27
• Subjects: Acid value (AV) -- Fats oils and grease (FOG) -- Greener alternative method -- Visual titration -- Yellow grease -- Brown grease; Oils and fats -- Periodicals; Soap -- Periodicals; Fats -- Periodicals; Food-Processing Industry -- Periodicals; Acides gras -- Périodiques; Aliments -- Industrie et commerce -- Périodiques; Huiles et graisses -- Périodiques; Savon -- Périodiques; Oliën; Chemie; Oils and fats; Soap; Periodicals; 547.77
• DOI: 10.1002/aocs.12281
• Languages: English
• ISSNs: 0003-021X

Abstract

Abstract: A greener alternative method is proposed for measuring acid values (AV) of fats, oils, and grease (FOG) based on visual titration. Compared with Official Method Cd 3d‐63 of the American Oil Chemists' Society (AOCS), this greener alternative method can eliminate the use of toluene, which in turn reduces toxicity and cost. A total of 44 samples of yellow and brown grease with AV ranging from 0.13 to 170.37 (mg KOH) g −1 were titrated using both methods. The alternative titration method can provide accurate and reliable results to determine the AV of FOG by various statistical analyses including repeatability, linear regression, f ‐test, t ‐test, and method accuracy calibration with AOCS Cd 3d‐63. This low‐cost method can be recommended for routine titration in research and development, and in biodiesel plants for most FOG samples.