Sample pretreatment method suitable for detection of basic orange II in bean product
A sample pretreatment and basic orange technology, applied in the preparation of test samples, measuring devices, instruments, etc., can solve the problems of large amount of organic solvent, long sample processing time, low sample detection efficiency, etc., and achieve short processing time , protection of the environment and the health of the analyst, high selectivity and efficient enrichment and purification effects
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0025] Sample: Yuba.
[0026] Target substance: Basic Orange II.
[0027] Nylon 6 was used as a raw material, and a mixed solution of m-cresol and formic acid (4:6, v / v) was used as a solvent, and stirred and mixed at room temperature for 12 hours to obtain a nylon 6 solution with a concentration of 25 wt%. Using electrospinning method, at 30% humidity, 20°C temperature, and 15kV voltage, the syringe is advanced at a speed of 0.2mL / h, the distance between the injection needle tip and the receiving device is 15cm, electrospinning for 2 hours, and the film thickness is collected Nylon 6 nanofiber membrane with a fiber diameter of about 70 μm and a fiber diameter of about 200 nm.
[0028] Weigh 1.0g of bean curd stick powder, add 1mL of ethanol to homogenize, then add 10mL of extract---ammonia water to adjust the pH to 8 in 60% ethanol aqueous solution (ethanol:water=70:30, v / v), vortex mix At room temperature, ultrasonically extract for 30 min, centrifuge at 10,000 r / min for 5...
Embodiment 2
[0031] Sample: fried tofu.
[0032] Target substance: Basic Orange II.
[0033] Using nylon 6 as raw material and a mixed solution of m-cresol and formic acid (4:6, v / v) as solvent, stir and mix at room temperature for 8 hours to obtain a nylon 6 solution with a concentration of 32 wt%. Using the electrospinning method, at a humidity of 30%, a temperature of 20°C, and a voltage of 18kV, the syringe is advanced at a speed of 0.5mL / h, the distance between the injection needle tip and the receiving device is 20cm, electrospinning for 4 hours, and the film thickness is collected Nylon 6 nanofiber membrane with a fiber diameter of about 120 μm and a fiber diameter of about 230 nm.
[0034]Weigh 2.0g of oily tofu, crush it, add 1mL of ethanol to homogenize, add 5mL of n-hexane, vortex for 30s, ultrasonic for 30min, centrifuge for 5min, discard the n-hexane layer, then add 10mL of extract solution---hydrogenation 80% ethanol aqueous solution (ethanol:water=70:30, v / v) with sodium a...
Embodiment 3
[0037] Sample: soy milk.
[0038] Target substance: Basic Orange II.
[0039] Nylon 6 was used as a raw material, and a mixed solution of m-cresol and formic acid (4:6, v / v) was used as a solvent, and stirred and mixed at room temperature for 15 hours to obtain a nylon 6 solution with a concentration of 30 wt%. Using electrospinning method, at 30% humidity, 20°C temperature, and 16kV voltage, the syringe is advanced at a speed of 0.1mL / h, the distance between the injection needle tip and the receiving device is 25cm, electrospinning for 2 hours, and the film thickness is collected Nylon 6 nanofiber membrane with a fiber diameter of about 80 μm and a fiber diameter of about 180 nm.
[0040] Weigh 1.0g of soymilk powder, add 1mL of ethanol to homogenize, add 10mL of extract --- 70% ethanol aqueous solution (ethanol:water=70:30, v / v) with ammonia water to adjust the pH to 12, and vortex to mix At room temperature, ultrasonically extract for 30 minutes, centrifuge at 10,000 r / mi...
PUM
Property | Measurement | Unit |
---|---|---|
diameter | aaaaa | aaaaa |
diameter | aaaaa | aaaaa |
thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com