Development of a decontamination protocol for Rancimat equipment's components

• Grant number: 17/02819-8
• Support Opportunities: Regular Research Grants
• Start date: August 01, 2017
• End date: April 30, 2019
• Field of knowledge: Agronomical Sciences - Food Science and Technology - Food Science
• Principal Investigator: Marisa Aparecida Bismara Regitano d'Arce
• Grantee: Marisa Aparecida Bismara Regitano d'Arce
• Host Institution: Escola Superior de Agricultura Luiz de Queiroz (ESALQ). Universidade de São Paulo (USP). Piracicaba , SP, Brazil

Abstract

The oxidative stability of oils, fats and biodiesel can be readily determined under accelerated conditions by OSI equipments (oxidative stability-index) such as Metrohm's Rancimat. Low maintenance costs, speed in results and usability are features that have contributed to establish Rancimat's use as a world reference in OSI determinations. However, in contrast to the conveniences offered, cleaning the components after analysis can be an arduous task. The reliability of results has a direct link to the effective elimination of oil residues and lipid oxidation products. The lack of instructions or data regarding the effects of such residues on measurements, combined with the arbitrariness of the employed cleaning methods, demand the development of protocols. The Laboratory of Oils and Fats at ESALQ/USP has initiated a series of experiments with that goal of investigation. This proposal aims to carry forward the study on the effects of cleaning Rancimat's components. For the first time a science-based cleaning protocol designed for Rancimat will be suggested in a way that it could be replicated worldwide by other researchers and Rancimat users. From preliminary results thus far obtained, two kinds of treatments were selected to be employed immediately after each of the 50 batches of Rancimat analysis. The effect of the treatments will be assessed, primarily, by observing changes on the sample's induction period and, in a complementary way, by quantifying lipid oxidation products adhered on the surface of the equipment's accessories. So far, research has generated a considerable amount of positive feedback from the scientific community. This not only reinforces the need of execution of the given proposal as also recognizes its originality. The outcomes of this original work will actively contribute to the development and consolidation of the Brazilian research. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

BUENO-BORGES, LARISSA BRAGA; SARTIM, MARCO AURELIO; GIL, CLAUDIA CARRENO; SAMPAIO, SUELY VILELA; VIEGAS RODRIGUES, PAULO HERCILIO; BISMARA REGITANO-D'ARCE, MARISA APARECIDA. Sacha inchi seeds from sub-tropical cultivation: effects of roasting on antinutrients, antioxidant capacity and oxidative stability. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE, v. 55, n. 10, p. 4159-4166, OCT 2018. (17/02819-8, 13/03650-6)

BUENO-BORGES, LARISSA BRAGA; PEREIRA DOS SANTOS, GRASIELA CRISTINA; DE ALENCAR, SEVERINO MATIAS; BISMARA REGITANO-D'ARCE, MARISA APARECIDA. Improving Waste Cooking Oil Quality for Biodiesel Production with the Ethanolic By-product of Soybean Oil Extraction. JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY, v. 96, n. 12, p. 1379-1388, DEC 2019. (17/02819-8)

SAAVEDRA, THONY ARCE; BUENO-BORGES, LARISSA BRAGA; SANGALETTI-GERHARD, NAIANE; DE ALENCAR, SEVERINO MATIAS; BISMARA REGITANO-D'ARCE, MARISA APARECIDA. Optimized conventional and ultrasound-assisted ethyl transesterification of jatropha (Jatropha curcas) and palm (Elaeis guineensis) oil mixtures. Chemical Engineering Communications, SEP 2021. (13/23469-4, 17/02819-8)