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Para cresol

Manufactured by Merck Group
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Para-cresol is a chemical compound used in various laboratory applications. It is a colorless, crystalline solid with a characteristic phenolic odor. Para-cresol is commonly used as a reagent and intermediate in organic synthesis and chemical analysis. Its core function is to serve as a building block for the production of other chemicals and materials.

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Lab products found in correlation

Bovine serum albumin (bsa), by Merck Group (2 mentions) Mushroom tyrosinase, by Merck Group (2 mentions) Ethyl butyrate, by Merck Group (2 mentions) Pentanoic acid, by Merck Group (2 mentions) Acetophenone, by Merck Group (2 mentions) Ethyl caproate, by Merck Group (2 mentions) Heptanoic acid, by Merck Group (2 mentions) Octanal, by Merck Group (2 mentions) Nonanol, by Merck Group (2 mentions) Propionic acid, by Merck Group (2 mentions) 2 nononone, by Merck Group (2 mentions) 2 heptanone, by Merck Group (2 mentions) D limonene, by Merck Group (2 mentions) 3 octanone, by Merck Group (2 mentions) Hexanoic acid, by Merck Group (2 mentions) Nonanal, by Merck Group (2 mentions) Octanoic acid, by Merck Group (2 mentions) Butanoic acid, by Merck Group (2 mentions) Polyethylenimine (pei), by Merck Group (1 mentions) Hen egg white lysozyme, by Merck Group (1 mentions)

5 protocols using para cresol

1

Enzyme Purification and Characterization

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BPA, para-cresol (p-cresol), and other chemicals were obtained
from Sigma-Aldrich, and their purity was higher than 99%. Mushroom
tyrosinase (50 kU) was from Sigma-Aldrich as a solid with a specific
activity of 2430 unit mg–1 (1 unit is defined as
the enzyme activity resulting in an increase in absorbance at 280
nm of 0.001 at pH 6.5 at 25 °C in a 3 mL reaction solution containing l-tyrosine). Polyethylenimine (PEI, Mn 1200), poly(ethylene glycol) (PEG, Mn 1500), polyacrylate (PAL, Mn 1250),
diethylaminoethyl-cellulose (DEAE-cellulose, microgranular), carboxymethyl-cellulose
(CM-cellulose, microgranular), cellulose (fiber), hen egg-white lysozyme
(Mw: 14.4 kDa), and bovine serum albumin
(BSA, Mw: 66 kDa) were also from Sigma-Aldrich.
Wu L., Ji X, & Kong J. (2019). Polymer-Coated Mesoporous Carbon as Enzyme Platform for Oxidation of Bisphenol A in Organic Solvents. ACS Omega, 4(15), 16409-16417.
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2

Organosolv Lignin Tyrosinase Immobilization

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Organosolv lignin (OL) was purchased from Chemical Point (Oberhaching, Germany). Mushroom tyrosinase (1000 U/mg), bovine serum albumin (BSA), glutaraldehyde (GA), poly (diallyldimethylammonium chloride) (PDDA, 20% v/v water solution), 2-chloro-4,4,5,5-tetramethyl-1,3,2-dioxaphopholane, chrome (III) acetylacetonate, deuterated chloroform (CDCl3), ascorbic acid, Bradford reagent, l-tyrosine, para-cresol, tyrosol, 4-hydroxyphenylacetic acid, 3-(4-hydroxyphenyl)propionic acid, catechol, potassium chloride (KCl), and organic solvents were purchased from Sigma–Aldrich (St. Louis, MO, USA), and were used without any further purification. All experiments were done in triplicate using native and immobilized tyrosinase in Phosphate buffer saline (PBS).
Capecchi E., Piccinino D., Delfino I., Bollella P., Antiochia R, & Saladino R. (2018). Functionalized Tyrosinase-Lignin Nanoparticles as Sustainable Catalysts for the Oxidation of Phenols. Nanomaterials, 8(6), 438.
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3

Analytical Standards for Bioassays

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Ethanol, acetic acid, n-hexane, n-butanol and mEthanol were HPLC grade (Sigma-Aldrich, St. Louis, USA). Ultrapure water was obtained using Milli-Q (Merck, Kenilworth, USA). Reference standards included phenol (Sigma-Aldrich; 99% purity), para cresol (Sigma-Aldrich; 99% purity), urocanic acid (4-Imidazoleacrylic acid; Sigma; 99% purity), choline bitartrate (Sigma; 99% purity), L-tryptophan (Sigma; with ≥98% purity) and adenosine (Olchemim; 98% purity). Dragondorff’s reagent was used for TLC visualisation (Fluka; St. Louis, USA).
Nongmaithem B.D., Mouatt P., Smith J., Rudd D., Russell M., Sullivan C, & Benkendorff K. (2017). Volatile and bioactive compounds in opercula from Muricidae molluscs supports their use in ceremonial incense and traditional medicines. Scientific Reports, 7, 17404.
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4

Profiling Volatile Compounds in Milk

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Propionic acid, butanoic acid, pentanoic acid, hexanoic acid, heptanoic acid, octanoic acid, n-decanoic acid, hexanal, octanal, nonanal, (E)-2-octenal, pentanol, hexanol, 1-octen-3-ol, nonanol, paracresol, 2-heptanone, 3-octanone, 2-nononone, acetophenone, ethyl butyrate, ethyl caproate, and d-limonene were purchased from Sigma-Aldrich (St. Louis, MO). These chemical substances were detected to be the odor-active compounds of milk fan Y6 sample in our previous study (Tian et al., 2019) (link). All of the chemicals were of chromatographic grade.
Tian H., Xu X., Sun X., Chen C, & Yu H. (2020). Evaluation of the perceptual interaction among key aroma compounds in milk fan by gas chromatography-olfactometry, odor threshold, and sensory analyses. Journal of dairy science, 103(7).
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5

Volatile Organic Compounds Profiling

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Propionic acid, butanoic acid, 3-methyl-butyric acid, pentanoic acid, hexanoic acid, heptanoic acid, octanoic acid, decanoic acid , 3-methylbutyraldehyde, octanal, nonanal, (E)-2-octenal aldehyde, 1-pentanol, 1-hexanol, 1,6-octadiene-3-alcohol, nonanol, para-cresol, 2-heptanone, 3-octanone, 2-nononone, acetophenone, ethyl butyrate, ethyl caproate, ethyl octanate, and d-limonene were purchased from Sigma-Aldrich (St. Louis, MO). 2-Octanol (internal standard, IS) and n-alkane standards (C 6 -C 30 ) were purchased from Dr. Ehrenstorfer GmbH Co. Ltd., Germany. All of the chemicals were of chromatographic grade.
Tian H., Xu X., Chen C, & Yu H. (2019). Flavoromics approach to identifying the key aroma compounds in traditional Chinese milk fan. Journal of dairy science, 102(11).
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