In-line measurement of sunflower oil color in the Lovibond scale using a low-cost robust device

Muzzio, Cristian R.; Díaz, Rodolfo J.; Dini, Nicolás G.

doi:10.1016/j.jfoodeng.2013.07.023

Cited by 16 publications

(13 citation statements)

References 17 publications

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“…Recently the speed of discoloration in sunflower oil has been measured in the Lovibond scale using a low‐cost robust device (Muzzio et al . ).…”

Section: Methodsmentioning

confidence: 97%

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Discoloration and Adsorption of Acaricides from Beeswax

Bonvehí¹,

Orantes-Bermejo²

2016

J Food Process Engineering

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The bleaching effect of solid adsorbent material was evaluated on acaricides residues during the recycling of old wax combs process. The effect of parameters such as initial concentration, moisture level, clay dosing, temperature, particle size, agitation time, Freundlich isotherm and kinetic adsorption were investigated and simulated in pilot plant following industry guidelines. The efficiency capacity of sorbent was assayed in optimal conditions on different levels of chlorfenvinphos, tau‐fluvalinate and coumaphos residues from 0.015 to 88.6 mg/kg, identified in 66 samples of commercial beeswaxes analyzed before and after the process of refination. Experimental results indicated that the use of a dough formed by active carbon (Norit SA4 PAH) and bleaching earth (Tonsil Supreme 114 FF) in the proportion (0.04/4.0 wt % beeswax) under bleaching conditions [agitation (250 rpm) for 45 min working at 90°C under atmospheric pression] was very efficient to reduce color (>80%) and amount of chlorfenvinphos (93.4 ± 7.40%) and coumaphos (93.1 ± 3.90%). But, lower affinity was identified in tau‐fluvalinate pyrethroid (average, 35%) with large variations (13.7–73.9%). The Lagergen pseudo‐first‐order kinetic model was appropriate to organophosphorus acaricides sorption with coefficients of correlation R2 = 0.95 for all initial concentrations studied. Practical Applications Beeswax is a complex mixture of paraffinic hydrocarbons, esters of fatty acids and alcohols, diesters, free fatty acids and alcohols produced by the worker bee. An important aspect is the recycling of beeswax after the extraction of honey. At first, its color is white, but after the bees’ manipulation, it changes from yellow to brownish originated from propolis and pollen pigments. If beeswax is dark its value is much lower. Thus, bleaching is one the most important steps in recycled beeswax. Furthermore, in the last ten years, the accumulated acaricides residues used in the fight against Varroa destructor are clearly detected in commercial beeswaxes limiting its use as an authorised food additive in the EU (code E901). The idea of simultaneous bleaching and decontamination process was introduced in this work to recycle beeswax. The results indicated that the adsorption was very effective in a beeswax melting solution with a simple and economical application.

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“…Recently the speed of discoloration in sunflower oil has been measured in the Lovibond scale using a low‐cost robust device (Muzzio et al . ).…”

Section: Methodsmentioning

confidence: 97%

“…From this equation the linear regression between ln A t /A 0 and t 0.5 is a straight line whose slope is equal to 2k. Recently the speed of discoloration in sunflower oil has been measured in the Lovibond scale using a low-cost robust device (Muzzio et al 2014).…”

Section: Discoloration Rate Of Beeswaxmentioning

confidence: 99%

Discoloration and Adsorption of Acaricides from Beeswax

Bonvehí¹,

Orantes-Bermejo²

2016

J Food Process Engineering

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“…Colour of oils is one of the most important measurement to predict quality and acceptability of edible oils by the consumer (Muzzio et al, 2014). Results showed that the least amount of change in ΔE was related to the sample (5.31 AE 0.03) with black lid and the sample covered with G/A-TiO 2 -2% (6.16 AE 0.04), respectively (Table S2).…”

Section: Oil Colourmentioning

confidence: 99%

Effect of gelatin/agar bilayer film incorporated with TiO₂ nanoparticles as a UV absorbent on fish oil photooxidation

Vejdan

Ojagh

Abdollahi

2017

Int J of Food Sci Tech

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This research evaluated the effect of gelatin/agar bilayer film and nanocomposites containing different concentrations of TiO2 nanoparticles (0.5%, 1% and 2%) as ultraviolet (UV) and oxygen barriers on the oxidative stability of fish oil. Samples of fish oil covered with the bilayer films were stored under UV light or in darkness and with or without lids at 18 °C for 12 days. Oil quality in terms of peroxide values (PV), thiobarbituric acid (TBA), conjugated diene (CD), fatty acids profile and colour change (∆E) was monitored during storage. Fish oil photooxidation was hindered by increasing TiO2 concentration, so that nanocomposite containing 2% of the nanoparticles could control photooxidation, similar to the samples stored in darkness. Furthermore, upon studying both photooxidation and autoxidation, the highest amounts of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), as well as the lowest amount of changes in PV, TBA, CD and ∆E, were observed in oils covered with the nanocomposites.

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“…However, a clear relationship between the changes measured in the flashpoint, color and the composition of the waste cooking oil after bentonite was added could not be easily identified. Sunflower Oil An in-line measurement system of sunflower oil color using 8 LEDs was developed [ 85 ]. This allowed measurement of transmission and reflection at four wavelengths: red (R), green (G), blue (B) and near-infrared (NIR).…”

Section: Methods For Color Measurementmentioning

confidence: 99%

The Amber-Colored Liquid: A Review on the Color Standards, Methods of Detection, Issues and Recommendations

Hadi

Ker

Thiviyanathan

et al. 2021

Sensors

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For most natural or naturally-derived liquid products, their color reflects on their quality and occasionally affects customer preferences. To date, there are a few subjective and objective methods for color measurement which are currently utilized by various industries. Researchers are also improving these methods and inventing new methods, as color is proven to have the ability to provide various information on the condition and quality of the liquid. However, a review on the methods, especially for amber-colored liquid, has not been conducted yet. This paper presents a comprehensive review on the subjective and objective methods for color measurement of amber-colored liquids. The pros and cons of the measurement methods, the effects of the color on customer preferences, and the international industry standards on color measurements are reviewed and discussed. In addition, this study elaborates on the issues and challenges related to the color measurement techniques as well as recommendations for future research. This review demonstrates that the existing color measurement technique can determine the color according to the standards and color scales. However, the efforts toward minimizing the complexity of the hardware while maximizing the signal processing through advanced computation are still lacking. Therefore, through this critical review, this review can hopefully intensify the efforts toward finding an optimized method or technique for color measurement of liquids and thus expedite the development of a portable device that can measure color accurately.

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In-line measurement of sunflower oil color in the Lovibond scale using a low-cost robust device

Cited by 16 publications

References 17 publications

Discoloration and Adsorption of Acaricides from Beeswax

Discoloration and Adsorption of Acaricides from Beeswax

Effect of gelatin/agar bilayer film incorporated with TiO₂ nanoparticles as a UV absorbent on fish oil photooxidation

The Amber-Colored Liquid: A Review on the Color Standards, Methods of Detection, Issues and Recommendations

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In-line measurement of sunflower oil color in the Lovibond scale using a low-cost robust device

Cited by 16 publications

References 17 publications

Discoloration and Adsorption of Acaricides from Beeswax

Discoloration and Adsorption of Acaricides from Beeswax

Effect of gelatin/agar bilayer film incorporated with TiO2 nanoparticles as a UV absorbent on fish oil photooxidation

The Amber-Colored Liquid: A Review on the Color Standards, Methods of Detection, Issues and Recommendations

Contact Info

Product

Resources

About

Effect of gelatin/agar bilayer film incorporated with TiO₂ nanoparticles as a UV absorbent on fish oil photooxidation