The pH was measured in a solution of honey or bee pollen (10 g of honey or bee pollen dissolved in 100 mL of ultra-pure water) using a pH meter (OHAUS ST2100-F, Parsippany, NJ, USA) [5 ,19 ].
St2100 f
Manufactured by Ohaus
Sourced in United States
The ST2100-F is a high-precision analytical balance from Ohaus. It has a maximum capacity of 2,100 grams and an readability of 0.01 grams. The balance is designed for use in laboratory and industrial settings, providing accurate measurements for a variety of applications.
Automatically generated - may contain errors
9 protocols using st2100 f
1
pH Measurement of Honey and Bee Pollen
2
Physicochemical and Microbial Analysis of Samples
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
The pH of the sample was measured using a pH meter (Ohaus ST 2100-F, USA). The salt and moisture content were analyzed using the Mohr and thermogravimetry methods, respectively [56 ]. The enumeration of culturable total bacteria was performed by total viable count on selective media, while Plate count agar was used to enumerate the aerobic bacteria [11 (link)]. For lactic acid and halophilic bacteria, de Man–Rogosa–Sharp agar, supplemented with 5% NaCl [10 (link)] and salt marine agar, were used, respectively [57 (link)]. Plate count agar, salt marine agar, de Man–Rogosa–Sharp agar for cultural bacteria were purchased from Hi-Media (India). All samples were subjected to CIELAB colorimetric L* (light-ness), a* (redness-greenness), and b* (yellowness-blueness) tests, using Konica Minolta (11).
3
Crosslinked Zein Electrospinning Solution
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
Anhydrous ethanol was first diluted to a 70% concentration (v/v) using deionized water. Uncrosslinked zein solutions of 25%, 30%, and 40% (w/v) concentrations were prepared in 70% ethanol. Crosslinked zein solutions were prepared using an experimental protocol reported elsewhere [13 (link)]. Briefly, a citric acid solution of 9% concentration (w/v) and a sodium hydroxide solution with a concentration of 0.125 mg/mL were respectively prepared using 70% ethanol as the solvent. The pH of the citric acid solution was adjusted to 4 by a dropwise addition of sodium hydroxide solution to it while monitoring the pH of the solution using a pH meter (model number ST2100-F, Ohaus, Parsippany, NJ, USA). A zein solution of 50% concentration (w/v) was prepared using the pH 4 citric acid solution, and it was aged for 48 h prior to preparing crosslinked zein solutions with it. The aged 50% zein solution was then diluted using 70% ethanol to concentrations of 25%, 30%, and 40% of crosslinked zein (w/v). A simplified process describing the preparation of the electrospinning solution is provided in Figure 1 a.
4
Egg Characteristics: Storage Effects
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
After 2, 5, 12 and 19 days of storage, 30 eggs per breeder age and storage duration were sampled for egg characteristics (360 eggs in total). Egg characteristics of the 2 days stored eggs were used as the reference. Eggs were weighed and thereafter broken onto a flat surface, where thick albumen height, thick albumen diameter and yolk diameters (perpendicular to each other) were determined with an electronic digital caliper (Matrix, Guangdong, China). The height of the thick albumen was measured in the middle of the thick albumen equidistant from the outer edge of the albumen and the yolk [28 (link)]. The albumen and the yolk were then separated, and the fresh yolk weight was determined. Thereafter, the yolk and the albumen were homogenized separately, and their pH was measured immediately with an electronic pH meter (Ohaus, ST2100-F, Parsippany, NJ, USA). Shell weight was measured after washing and drying for 24 h at room temperature. The weight of the albumen was calculated as the difference between the weight of the egg and the weight of the yolk plus the shell. Albumen and yolk were then dried at 105 °C to constant weight for dry matter (DM) determination [29 ].
5
Measurement of Plasma-Irradiated Water Properties
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
The conductivity of the plasma-irradiated water was measured using a pH/conductivity multiparameter meter (Orion Star A215, Thermo Fisher Scientific Inc., Waltham, MA, USA). The pH was measured in DI water using a pH meter (ST2100-F, Ohaus Corp., Parsippany, NJ, USA). The temperature of the plasma-irradiated water was measured by placing a thermocouple thermometer (D55, Hanyoung Nux, Incheon, Republic of Korea) in the water.
6
Characterizing Apple Juice Physicochemical Properties
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
The pH of juices of different apple varieties was measured by a pH meter (OHAUS ST2100 F). Electric conductivity was measured using a conductivity meter (CD20 Conductivity meter) and was expressed as microsiemens per centimeter (µS/ cm) 16 . The total acidity was determined titrimetrically according to the French standard 18 . Brix and density were measured using a refractometer.
7
pH and Titratable Acidity Measurement
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
The pH of each sample was measured using a pH meter (OHAUS ST2100-F; Parsippany, USA). Titratable acidity (TA) was measured according to the method described by Jung et al.17 (link). The sample and distilled water were mixed in a ratio of 1:1 and titrated by adding 0.1 N NaOH until the pH reached 8.3. At this time, the TA (%) was calculated according to the following. formula:
8
Monitoring Pork pH Stability
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
9
Characterization of Nanoemulsion Physicochemical Properties
Check if the same lab product or an alternative is used in the 5 most similar protocols
+ Expand
Viscosity of nanoemulsion was analyzed by a Digital Viscometer (Brookfield Engineering Laboratories, Inc., MA). pH of NE was recorded through a digital pH meter (ST2100-F, Ohaus, USA) at room temperature. For conductivity, it was employed a standard digital conductometer (Starter 3100C, Ohaus, Parsippany, NJ, USA). All measurements were made by triplicate at room temperature (20 ± 2 • C).
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!