Development of an automatic photometric titration procedure to determine olive oil acidity employing a miniaturized multicommuted flow-batch setup

2014 ◽  
Vol 6 (1) ◽  
pp. 302-307 ◽  
Author(s):  
Carla C. Crispino ◽  
Boaventura F. Reis
Keyword(s):  
Olive Oil ◽  
Titration Procedure ◽  
Photometric Titration

scholarly journals A Simple and Rapid Spectrophotometric Method for Determination of Thiophanate-Methyl in Commercial Formulations and Its Residues in Foodstuffs

2004 ◽  
Vol 87 (4) ◽  
pp. 811-814 ◽  
Author(s):  
Balbir C Verma ◽  
Sumita Sood ◽  
Chetan Chauhan ◽  
Devender K Sharma
Keyword(s):  
Spectrophotometric Method ◽  
Thiophanate Methyl ◽  
Green Color ◽  
Yellowish Green ◽  
Titration Procedure ◽  
Maximum Absorbance ◽  
Photometric Titration ◽  
Formulation Analysis ◽  
Sensitive Spectrophotometric Method

Abstract A new, simple, rapid, and sensitive spectrophotometric method for the determination of thiophanate-methyl, based on its reaction with cobalt(II) in the presence of triethylamine, has been developed. The yellowish green color that develops instantaneously on mixing the fungicide with the reagents in dimethylformamide is stable for at least 2 h and has maximum absorbance at 360 nm. The method has been successfully applied to the determination of thiophanate-methyl in its commercial formulations and residues on grains and apples. A photometric titration procedure for formulation analysis of the fungicide has also been developed.

scholarly journals Instrumentation and Automated Photometric Titration Procedure for Total Acidity Determination in Red Wine Employing a Multicommuted Flow System

2006 ◽  
Vol 2006 ◽  
pp. 1-8 ◽  
Author(s):  
Ausberta Jesus Cabezas Garcia ◽  
Boaventura F. Reis
Keyword(s):  
Red Wine ◽  
Flow System ◽  
Reference Method ◽  
Total Acidity ◽  
Real Time Processing ◽  
Photometric Detection ◽  
Titration Procedure ◽  
Relative Standard ◽  
Significant Difference ◽  
Photometric Titration

An automated procedure for photometric titration of red wine and associated instrumentation is described. The procedure was based on the flow-batch approach implemented employing multicommutation. The photometric detection was carried out using a homemade LED-based photometer. The mixing device, LED, and photodetector were attached to the titration chamber in order to form a compact and small-sized unit. The flow system comprised an automatic injector and three-way solenoid valves, which were controlled by a microcomputer through an electronic interface card. The software, written in Quick BASIC 4.5, was designed with abilities to accomplish all steps of the titration procedure including data acquisition and real-time processing to decide about the course of titration in the following step and so forth, until the titration endpoint was reached. The usefulness of the proposed titration system was demonstrated by analyzing red wine samples. When results were compared with those obtained using the AOAC reference method, no significant difference was observed at the95%confidence level. A relative standard deviation of ca 2%(n=9) was obtained when processing a typical red wine sample containing 7.3gl-1total acidity expressed as tartaric acid.

A preliminary study on the potential of front face fluorescence spectroscopy for the discrimination of Moroccan virgin olive oils and the prediction of their quality

2021 ◽  
Author(s):  
Hicham Zaroual ◽  
El Mestafa El Hadrami ◽  
Romdhane Karoui
Keyword(s):  
Fluorescence Spectroscopy ◽  
Olive Oil ◽  
Virgin Olive Oil ◽  
Front Face ◽  
Virgin Olive Oils ◽  
Olive Oils ◽  
Preliminary Study

This study examines the feasibility of using front face fluorescence spectroscopy (FFFS) to authenticate 41 virgin olive oil (VOO) samples collected from 5 regions in Morocco during 2 consecutive crop seasons.

A Little Olive Oil May Do the Trick

PsycCRITIQUES ◽  
2016 ◽  
Vol 61 (28) ◽  
Author(s):  
Anne Moyer ◽  
Jennifer M. Bowers
Keyword(s):  
Olive Oil

Detection of Cotton-Seed Oil in Olive-Oil

1880 ◽  
Vol 10 (243supp) ◽  
pp. 3874-3874
Author(s):  
Benjamin Nickels
Keyword(s):  
Olive Oil ◽  
Cotton Seed ◽  
Seed Oil ◽  
Cotton Seed Oil
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