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Orbital shaker

Manufactured by Thermo Fisher Scientific
Sourced in United States, India, Germany

The Orbital Shaker is a versatile laboratory equipment designed to mix and agitate samples in a gentle, consistent manner. The core function of this product is to create a circular, orbital motion that facilitates the uniform suspension and mixing of liquids, cells, or other materials within various containers, such as flasks, beakers, or microplates.

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44 protocols using orbital shaker

1

Aqueous Extraction of Moringa oleifera Leaves

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MO leaf aqueous extract (10 % w/v) was made by soaking 10 g of crushed leaves in one hundred mL of DW for 24 h with stirring by an orbital shaker (Thermo Fisher Scientific, Inc). The extract underwent filtration using Whatman No. 4 filter paper, and centrifuged for 15 min at 5000 rpm; the crude extract was obtained using lyophilization and afterward preserved at a temperature of 4 °C until it was ready for use [30 ,42 (link)].
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2

Extraction of Bioactive Compounds from Agrocybe aegerita Mycelial Culture

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The extract preparation from the mycelial culture of Agrocybe aegerita was performed by a modified solvent evaporation method outlined by Shashikant et al. [14 (link)]. Briefly, the mushroom mycelial culture was cultured in an Erlenmeyer flask (250 mL) that contained malt extract broth. The sample was incubated at 27 °C for fifteen days. The mycelial culture was then filtered using Whatman filter paper 1 and dried at 32 °C for 72 h. The sample was ground to a fine powder using a mechanical grinder (Glen, 350 W, 20,000 RPM mixer, grinder, blender, Dublin, Ireland). The powdered sample (5 g) was then mixed with 50 mL of absolute ethanol and a conical flask containing the mixture was kept in shaking condition in an orbital shaker (Thermo Scientific, Mumbai, India) at 500 rpm for 48 h. The supernatant was filtered using Whatman grade 4 paper. The supernatant was then kept at 4–7 °C in a refrigerator to evaporate the solvent ethanol. The milky white viscous extract thus obtained was kept in vials and stored at −20 °C for further analysis.
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3

Determination of ATP Levels in Cultures

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Determination of ATP concentrations in both cultures was carried out using the BacTiter-Glo Firefly Luciferase Assay (Promega, Madison, WI) following the protocol included with the kit (Promega Corporation 2012 ). Briefly, BacTiter-Glo buffer and BacTiter-Glo substrate were equilibrated to room temperature. Substrate was then re-suspended in 10 mL buffer with gentle vortexing to form the BacTiter-Glo reagent. To perform the ATP measurements, 6.5 mg of I. hospitalis and I. hospitalis – N. equitans co-culture cell pellets were re-suspended in 100 μL of H2O, and placed into a white 96-well plate. Cells in solution were allowed to equilibrate to room temperature, and then an equal volume (100 μL) of BacTiter-Glo reagent was added to each well with cells, as well as to a well containing 100 μL of H2O only to serve as a blank. A standard curve of ATP concentrations was generated from 1 μM to 10 pM from a 1 μM stock solution and mixed with BacTiter-Glo reagent and also placed in the same white 96-well plate. The plate was placed on an orbital shaker (Thermoscientific) for five minutes to assist with cell lysis. Luminescence readings for the assay were recorded on a Fluoroskan Ascent FL Microplate Luminometer (Thermo Fisher Scientific Inc., Waltham, MA) and data processing of data was accomplished using the Ascent Software.
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4

Characterization of Adsorbent Materials

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The fresh and loaded adsorbent was pulverised and characterised by applying X-Ray (XRD), diffractometer (Brucker D8 advance), X-Ray Fluorescence (XRF), (Delta Professional), Scanning Electron Microscopy (SEM), (Carl Zeiss FEGSEM Gemini 500) respectively to find the mineralogical, elemental composition and morphology of the adsorbent. The ionic concentrations of adsorbates and filtrates were measured using calibrated Inductively Coupled Plasma-Optical Emission Spectrometry (iCAP 7000SERIES). Agitation of the adsorbent and solutions was achieved using an Orbital shaker (Thermo Scientific, supplied by Lamworld Technologies Pty Ltd). Thermogravimetric analysis (TGA) was used to evaluate the mass loss and thermal stability of the adsorbent using TGA/DSC3+,manufactured by Mettler Toledo,2018. The functional groups present in MGBW before and after adsorption of heavy metals were determined using a Fourier Transform Infrared Spectrometer (FTIR) (Vertex 70V model), manufactured and supplied by Bruker GmbH in the year 2018.
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5

Adventitious Root Growth Kinetics

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Plantlets were regenerated according to the method
of Ahmad et al.,50 (link) and the seed-derived
roots were collected after 30 days of plantlet development. At the
initial stage, the roots were shifted to NAA (0.5 mg/L)-augmented
MS media for stock culture development. The flasks containing roots
in liquid media were placed on an orbital shaker (Thermo Scientific;
Germany) in the dark for 30 days. After 30 days, a known and uniform
amount of adventitious roots were exploited for each experiment and
each treatment. All experiments were carried out in 250 mL Erlenmeyer
flasks comprising 50 mL of MS media with different concentrations
of melatonin (0.5–5.0 mg/L), 30 g/L sucrose, and a pH level
of 5.6–5.8. Fresh adventitious root biomass and growth kinetics
were studied at 7 day intervals for a period of 56 days. The growth
curve was established for growing adventitious roots. The color and
morphology of adventitious roots were studied along with the growth
kinetics. The details of the experiment and their treatments are given
in Table 1.
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6

Culturing Cryptococcus neoformans H99

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C. neoformans strain H99 (serotype A) was isolated and kindly provided by John Perfect at Duke University. Yeasts were grown in Sabouraud dextrose broth (pH 5.6; BD Difco) for 24 h at 30°C in an orbital shaker (Thermo Fisher) set at 150 rpm (to early stationary phase).
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7

VEGF Encapsulation in PLGA-MNS Nanoformulation

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20 mg PLGA raw materials and 0.05 mg of VEGF was added to 1 mL of different concentrations of MNS or Mg(OH)2 suspension (8.5, 17, 34, and 68 mM) in PBS buffer (1X, pH 7.4). The mixtures were incubated in an orbital shaker (Thermo Scientific) under mild agitation (400 rpm) at 37.0 °C. After 8 hours, the samples were centrifuged (4000 × g), and the concentration of VEGF in the supernatant of each sample was determined using the VEGF ELISA assay kit.
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8

Transient Antibody Production in 293F Cells

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Recombinant mAbs were transiently produced in FreeStyle 293F cells (ThermoFisher Scientific) following the protocol detailed by Vink et al (Vink, Oudshoorn-Dickmann, Roza, Reitsma, & de Jong, 2014 (link)). First, the cells were suspended in FreeStyle 293 Expression Medium (ThermoFisher Scientific) at a concentration of 1.1×10^6 cells/ml, and 2 ml of the suspension were added to individual wells of a 24-well deep well plate. The cells were transfected with a 2 μg mixture of plasmids encoding the heavy chain (690 ng), light chain (690 ng), human p21 (Invivogen; 100 ng), human p27 (Invivogen; 500 ng), and SV40 large T antigen (20 ng) suspended in Opti-MEM I Reduced-Serum Medium (ThermoFisher Scientific), mixed with 293fectin (ThermoFisher Scientific), and added to the cells per the manufacturer’s instructions. The p21-, p27-, and SV40 large T antigen-encoding plasmids were included to enhance antibody production, as previously described (Vink et al., 2014 (link)). After transfecting the cells, the plate was clamped into a Microflask system (Applikon Biotechnology) affixed to an orbital shaker (Thermo Scientific) in a 37°C, 5% CO2 incubator. The supernatant was harvested after 7 days.
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9

Extraction of Citrus nobilis Peel Polyphenols

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Citrus nobilis peels were kept for drying in a hot air oven at 30 °C to remove the water content. The dried peels were ground using a mechanical grinder (Sujata, mixer grinder, 900 watts) and the powder thus obtained was used for the preparation of the extract. Herein, the modified solvent evaporation technique was employed for extract preparation. Briefly, 40 g powdered peel was dispersed in 400 mL (1:10 w/v ratio) of absolute methanol in a conical flask and kept in an orbital shaker (Thermofisher Scientific Pvt. Ltd., Mumbai, India) for 72 h. To obtain the modified evaporated extract, the sample was filtered using Whatman filter paper No. 1 and evaporation of methanol was done at refrigerated temperature (4–7 °C) for 72 h. At refrigerated temperature, polyphenolic components were dispersed in methanol and molecules of methanol collected enough kinetic energy from its exchange with neighbor molecules to escape from the bonds with another molecule, hence molecules leave the mass of liquids and join the air as a vapor. The obtained dry extract was stored at −20 °C in airtight glass tubes for further use [8 (link)].
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10

Magnesium-Loaded PLGA Nanoparticle Synthesis

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The primary mixture was prepared by adding 20 mg PLGA raw materials to 1 mL of different concentrations of Mg(OH)2 suspension (8.5, 17, 34, and 68 mM) in PBS buffer (1X, pH 7.4). The resulting mixtures were incubated in an orbital shaker (Thermo Scientific) under mild agitation (400 rpm) at 37.0 °C. At predefined time intervals, the samples were centrifuged (4000 × g), and the concentration of magnesium in the supernatant of each sample was determined using the magnesium assay kit.
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