The color parameters of meat and subcutaneous fat were evaluated as described by Houben et al. [17 (link)], using a colorimeter (Minolta Chroma Meter CR-300, Osaka, Japan) with aperture of 8 mm, illuminant D65, 10° standard observer, open cone. The calorimeter calibration was performed, at room temperature (25°C), before readings using a pure white standard (100% reflection) and a black box (zero reflection). The parameters evaluated were: lightness (L*), redness (a*), and yellowness (b*) which were assessed by the CIE L* a* b* color system [18 ]. Approximately 30 min before color readings, the muscle`s myoglobin was exposed to oxygen. The color was read at three different points, and the averages were calculated. The device calibration was performed before the readings with white and black standards. The pH was then measured also at three different locations across the surface, using a digital pH-measuring instrument (Testo, model 205).
Model 205
Manufactured by Testo
Sourced in Germany
The Testo Model 205 is a portable pH/temperature meter designed for quick and accurate pH and temperature measurements in various applications. It features a sturdy, water-resistant housing and comes with a pH electrode and temperature probe for reliable readings.
Automatically generated - may contain errors
Lab products found in correlation
5 protocols using model 205
1
Meat and Fat Color Evaluation
2
Potentiometric pH Measurement of Pork Loins
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
The pH of pork loins was measured potentiometrically using a pH meter with a glass electrode (Model 205, Testo, Lenzkirch, Germany) calibrated against buffers of pH 4.0 and 7.0. Three measurements were made by direct injection of an electrode into each sample of the same temperature to a depth of 2 cm.
3
Postmortem Muscle pH and Color Analysis
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
The pH values (15 min and 24h) were determined by introducing the electrode directly into the breast muscle with the contact potentiometer (Testo, Model 205). The analyses were performed in 24h postmortem triplicates as described by Carvalho et al. (2017) .
The Colorimeter (Minolta CR 400) was used to evaluate the colour parameters of L* (luminosity), a* (red component) and b* (yellow component) on the fillet's ventral surface, taking five different recognition points per sample, according to the methodology described by Carvalho et al. (2017) .
The Colorimeter (Minolta CR 400) was used to evaluate the colour parameters of L* (luminosity), a* (red component) and b* (yellow component) on the fillet's ventral surface, taking five different recognition points per sample, according to the methodology described by Carvalho et al. (2017) .
4
Wheat Flour and Cricket Powder pH
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
The pH was measured using the potentiometric method with a portable pH meter (model 205, Testo AG, Lenzkirch, Germany). The pH values were measured in a 5% solution of wheat flour and cricket powder in water. The tests were measured in triplicate.
5
Asparagus Acidity Analysis Protocol
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
Green and white asparagus spears were separately minced and homogenized with 20 mL of distilled water for 180 s, and 5 g was used for the measurement. The pH value was measured using the potentiometric method with a handheld pH meter (Model 205, Testo AG, Germany). The samples of each asparagus were titrated by adding 50 mL of 0.1 N NaOH with phenolphthalein as an indicator until the pH reached a value of 8.2 according to PN-EN 12147:2000 [20] . Acidity was measured in triplicate during storage for each day of sampling (and trays) and expressed as a citric acid percentage.
About PubCompare
Our mission is to provide scientists with the largest repository of trustworthy protocols and intelligent analytical tools, thereby offering them extensive information to design robust protocols aimed at minimizing the risk of failures.
We believe that the most crucial aspect is to grant scientists access to a wide range of reliable sources and new useful tools that surpass human capabilities.
However, we trust in allowing scientists to determine how to construct their own protocols based on this information, as they are the experts in their field.
Ready to get started?
Sign up for free.
Registration takes 20 seconds.
Available from any computer
No download required
Revolutionizing how scientists
search and build protocols!