The largest database of trusted experimental protocols

6 protocols using nahco3

1

Recombinant Protein Production in E. coli

Check if the same lab product or an alternative is used in the 5 most similar protocols
BP1 was produced by a fermentation process using E.coli, which was previously reported in the literature28 ,44 and provided in an unprocessed powder form by Spiber Inc. The amino acid composition of BP1 was alanine (16.4%), tyrosine (12.0%), glutamine (23.7%), glycine (21.9%), proline (15.3%), serine (9.3%) and others (1.4%). The protein sequence structure is shown in Fig. 1.
KH2PO4, K2HPO4, NaCl, Na2HPO4·H2O, NH4Cl, MgCl2·6H2O, CaCl2, FeCl3·6H2O, Yeast extract, and agar powder were purchased from FUJIFILM Wako Pure Chemical Co. (Osaka, Japan). Na2SO4, KCl, HCl, Na2SO4, NaHCO3, and NaOH were purchased from Kanto Chemical Co., Inc. (Tokyo, Japan). Plysurf was purchased from DKS Co. Ltd. (Kyoto, Japan). All chemicals were of reagent grade and used without further purification. Pronase E (P5147 Protease Type XIV from Streptomyces griseus) was purchased from Sigma Aldrich, Proteinase K was purchased from TaKaRa Bio Inc (Kusatsu, Japan), and chymotrypsin was purchased from NACALAI TESQUE, INC (Kyoto, Japan).
+ Open protocol
+ Expand
2

Porcine Collagen Preparation Protocol

Check if the same lab product or an alternative is used in the 5 most similar protocols
Cellmatrix Type I-A (3 mg/mL, pH 3, collagen derived from porcine tendons by acid extraction) was ordered from Nitta Gelatin Co., Ltd. (Osaka, Japan). Collagen buffer was prepared in accordance with the manufacture's protocol. Briefly, in 100 mL 0.05 N NaOH, 2.2 g NaHCO3 (262 mM final) and 4.77 g HEPES (20 mM final) were dissolved. NaOH and NaHCO3 were purchased from Kanto Chemical Co., Inc. (Tokyo, Japan); HEPES and 10X Hank's, from Sigma-Aldrich Co., Ltd. (Saint Louis, MO, USA).
+ Open protocol
+ Expand
3

Isolation and Culture of Primary Rat Hepatocytes

Check if the same lab product or an alternative is used in the 5 most similar protocols
Primary rat SHs were isolated by the collagenase perfusion method as previously described22 (link). Cells were suspended in serum-free Dulbecco’s modified Eagle’s medium/Nutrient Mixture Ham F-12 (DMEM/F12; Sigma-Aldrich Co., St.Louis, MO) supplemented with 20 mM HEPES (Dojindo Laboratories, Kumamoto, Japan), 25 mM NaHCO3 (Kanto Chemical Co. Inc., Tokyo, Japan), 30 mg/L L-proline (Sigma-Aldrich Co.), 0.1% bovine serum albumin (BSA; Serologicals Proteons Inc., Kankakee, IL), 10 mM nicotinamide (Sigma-Aldrich Co.), 1 mM ascorbic acid-2 phosphate (Asc2P; Wako Pure Chem. City, Japan), 10−7 M dexamethasone (Dex; Wako Pure Chem.), 0.5 mg/L insulin-transferrin-selenium (ITS-X; GIBCO-BRL Invitrogen, Grand Island, NY), 10 ng/mL epidermal growth factor (EGF; BD Biosciences, San Jose, CA) and antibiotics. After the number of viable cells was counted using the trypan blue exclusion test, the cells (2.0 × 104 cells/cm2) were plated on 35-, 60- or 100-mm dishes (Corning Inc., Corning, NY) coated with 1 mg/L HA (Sigma-Aldrich Co.). Three hours after plating, the cells were washed with the medium, and the medium was replaced every other day.
+ Open protocol
+ Expand
4

Calcium Carbonate Production from Calcium Silicate

Check if the same lab product or an alternative is used in the 5 most similar protocols
GLDA tetrasodium salt (GLDA-4Na, C9H9NNa4O8) solutions with different concentrations were prepared by mixing the initial GLDA-4Na solution (40 wt% in water, Tokyo Chemical Industry, Japan) with Milli-Q water, and pH was adjusted from an initial value of 13.8–~9.0 through the addition of aqueous HNO3 (60–61%, Kanto Chemical, Japan). This weakly alkaline pH was used at the beginning of the Ca extraction process to minimize the cost of pH regulation, as subsequent CaCO3 precipitation requires alkaline environments (pH > 8)32 (link),33 (link). High-purity commercial calcium silicate powders (Fig. 2, < 30 µm) with a general composition of CaSiO3 (Wako Pure Chemical Industries, Japan) were used as a Ca source to represent silicate minerals. Na2CO3 (>99.0%, Kanto Chemical, Japan), NaHCO3 (> 99.0%, Kanto Chemical, Japan), and CO2 gas (> 99.995 vol.%, Taiyo Nippon Sanso, Japan) were used as CO2 sources to optimize the CaCO3 production system.

Representative X-ray diffraction (XRD) pattern of the employed calcium silicate.

+ Open protocol
+ Expand
5

Ion Chromatography Analysis of Anions and Cations

Check if the same lab product or an alternative is used in the 5 most similar protocols
After the extraction processes, the anion and cation concentrations of each fraction were measured by ion chromatography (IC), using the Metrohm 930 Compact IC Flex system (Metrohm AG, Herisau, Switzerland). For cations, the samples were eluted through a Metrohm Metrosep C6-250/4.0 column with 8 mM ultrapure HNO3 (TAMAPURE AA-100, Tama Chemical, Kawasaki, Japan) at a flow rate of 0.9 mL·min−1. Anions were measured with a Metrohm Metrosep A Supp4-250/4.0 column with a chemical suppressor module. The mobile phase consisted of a mixture of 1.8 mM Na2CO3 and 1.7 mM NaHCO3 (Kanto Chemical, Tokyo, Japan) at a flow rate of 0.9 mL·min−1. A chemical suppressor module (Metrohm MSM) was used to decrease the background conductivity of the eluent and to transform the analytes into free anions. The column temperature was set at 35 °C throughout the analysis. Detection of cations and anions was accomplished by measuring electrical conductivity.
+ Open protocol
+ Expand
6

Investigating NDMA Formation in RO Membranes

Check if the same lab product or an alternative is used in the 5 most similar protocols
Analytical grade chemicals (NaCl, NaHCO3, CaCl2, NH4Cl, and HCl) were purchased from Kanto Chemical Co. (Tokyo, Japan). A NaOCl solution, with over 12% chlorine concentration, was purchased from Tosoh Co. (Tokyo, Japan), and a stock solution of chloramine was prepared at 0.2 M by mixing NaOCl and NH4Cl solutions. Further, hypobromite stabilized by sulfamic acid was used as stabilized hypobromite in this study. A stock solution of stabilized hypobromite comprised of hypobromite, sulfamic acid and sodium hydroxide was supplied by Organo Co. (Tokyo, Japan).
Chemicals selected as NDMA precursors were DMA, TMA, and N,N-dimethylbenzylamine (DMBA) were purchased from Kanto Chemical Co. (Tokyo, Japan) (Table 1). A flat sheet polyamide composite RO membrane sample (namely ESPA2) were supplied by Hydranautics/Nitto (Oceanside, CA, USA). This study used two types of treated wastewater: an ultrafiltration (UF)-treated wastewater and membrane bioreactor (MBR)-treated wastewater, both of which were collected at wastewater treatment plants in Japan.
+ Open protocol
+ Expand

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

Sign up now

Revolutionizing how scientists
search and build protocols!