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Nanodrop nd 1000 uv

Manufactured by Thermo Fisher Scientific
Sourced in United States

The Nanodrop ND-1000 UV is a spectrophotometer used to measure the concentration and purity of nucleic acid and protein samples. It requires only 1-2 microliters of sample to perform the analysis.

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3 protocols using nanodrop nd 1000 uv

1

RNA Yield and Integrity Analysis

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Total RNA yield was determined
by absorbance
measurement (A260) on the Nanodrop ND-1000 UV spectrometer (Thermo
Scientific, Wilmington, DE). All blood samples produced RNA concentrations
above the lower detection limit of 2 ng/μL of the NanoDrop instrument.
RNA integrity was determined by the Agilent Bioanalyzer utilizing
RNA 6000 chips (Agilent, Santa Clara, CA). All PCR runs were performed
using the ABI 7900HT SDS (Applied Biosystems, Foster City, CA), and
RT reactions were performed using the GeneAmp PCR System 9700 (Applied
Biosystems). Capillary gel electrophoresis was done using the Bioanalyzer
2100 instrument (Agilent).
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2

Aspergillus flavus Cultivation and Antioxidant Assays

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A. flavus NRRL3357 was obtained from Sun Yat-sen University (Guangdong, China) and cultivated on potato dextrose agar (PDA) medium (Becton, Dickinson and Company, USA) at 30 °C. The spore suspension was harvested with 0.05 % Triton X-100, and the spore number was counted using a hemocytometer under a microscope. DNA was extracted using a Biospin fungus genomic DNA extraction kit from cultured A. flavus hyphae, and a Nanodrop (Nanodrop ND-1000 UV, Thermo Scientific) was used to measure the purity of DNA using an absorption ratio of 260 to A280, the DNA concentration was measured by Nanodrop and adjusted to a final concentration of 2 × 103 ng/μL. Ferrous sulfate heptahydrate (FeSO4·7H2O) was purchased from Sigma. Chemical kits used for testing activity of CAT (BC0200-50 T/48S), POD (BC0090-50 T/48S) and SOD (BC0170-50 T/24S) were purchased from Solarbio (Beijing Solarbio Science & Technology Co., ltd.). All other chemical agents were analytical grade.
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3

Extracting RNA from Dimorphic Saltwort Seeds

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Total RNA was isolated from 0.1 g cotyledons of S. aralocaspica according to the manufacturer's instructions in the RNAprep Pure Plant Kit (DP432; Tiangen, Beijing, China). Cotyledons were sampled from seedlings derived from dimorphic seeds (brown and black seeds) at different developmental stages (3, 18, and 33 days after emergence) or at different NaCl concentrations (0, 100, 300, and 500 mM). The quantity and quality of total RNA were determined with a Nanodrop ND-1000 UV spectrophotometer (Thermo Fisher Scientific, Waltham, MA, United States).
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