Application of a Sodium Carbonate-Bicarbonate Buffer in the Phosphatase Test for Cheese

Kosikowsky, F.V.; Dahlberg, A. C.

doi:10.3168/jds.s0022-0302(49)92109-8

Cited by 5 publications

(1 citation statement)

References 10 publications

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“…Three different pH reagents were required in the experiment: 0.1 mol/L citric acid and sodium citrate buffer (CA-SCB) [ 33 ], UP water, and 0.1 mol/L sodium carbonate and sodium bicarbonate buffer (SC-SBB) [ 34 ]. To obtain them, CA-SCB and SC-SBB were prepared using commercial formulas, and the specific parameters are shown in Table 1 [ 35 , 36 ]. UP water was obtained using an UP water system (MolliQ-IQ700, Merck, Kenilworth, NJ, USA), and the actual pH and conductivity of the reagent were measured using a pH meter (PHS-3E, Lei Ci, Shanghai, China) and a conductivity meter (DDS-11A, Yue Ping, Shanghai, China).…”

Section: Methodsmentioning

confidence: 99%

Research on the Asymmetric Phenomenon of Voltage Polarity Based on Dielectric Wetting

Ye,

Jin,

Zhao

et al. 2024

Materials

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The present research investigated the voltage polarity asymmetry phenomenon based on dielectric wetting. In an ITO–hydrophobic layer–droplet setup, three reagents with different pH values (3.96, 7.0, and 10.18), two types of hydrophobic materials (AF1601 and 6%T6), and two different thicknesses (340 nm and 2.5 μm) of each material were systematically investigated. The results show that the thickness of the hydrophobic dielectric layer and the pH of the droplets had a significant impact on the droplet contact angle variation with the voltage. The contact angle on the thick hydrophobic dielectric layer followed the Lippmann–Young equation as the voltage changed. The angle of the thin hydrophobic dielectric layer was affected by its own properties and the type of droplet, which led to the occurrence of voltage polarity asymmetry of the electrowetting phenomenon. After further investigation of this phenomenon, it was found that it mainly accounted for the decrease in electric field strength at both ends of the droplet, which was caused by electrochemical reactions and changes in circuit resistance. The leakage current is an important indicator, and this phenomenon can be prevented by increasing the thickness of the hydrophobic dielectric layer.

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