Application of pectin ECG composition in inhibition of formation of gastrointestinal pyridine derivatives
A technology of pyridine derivatives and pyridine derivatives in the gastrointestinal tract, which is applied in the pectin ECG composition and the application field of inhibiting the formation of pyridine derivatives in the gastrointestinal tract, can solve the problems of raw material discarding and low processing utilization rate, and achieve Wide application prospects, strong free radical scavenging ability, and significant anti-pyridine derivatives formation effect
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Embodiment 1
[0020] Example 1: Screening of pyridine derivatives production inhibitors
[0021] (1) Add ECG, pectin, and pectin-ECG composition (pectin-ECG mass ratio 1:1) to 4 mL of artificial saliva (simulated salivary fluid, SSF, see Table 1 for preparation method) stock solution, and the final concentration is kept at 0.3g / L. Then add 25μL of 0.3mol / L CaCl 2 , Add ultrapure water to make up to 5mL. 200 mg of bovine serum albumin (BSA) and 11.36 μL of 8.8 mol / L glyoxal (GO) were added to establish a bovine serum albumin-glyoxal model. Mix well for 2 minutes and serve as the oral group. The control group contained no ECG, pectin, pectin ECG composition.
[0022] Table 1 Preparation of simulated digestive solution stock solution
[0023]
[0024]
[0025] (2) In step (1), 3.75 mL of artificial gastric fluid (SGF, preparation method is shown in Table 1) stock solution was added, and the pH value was adjusted to 2.0 with 0.1 mol / L HCl solution. Then add 0.25mL pepsin (80000U / mL)...
Embodiment 2
[0030] Example 2: 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging rate
[0031] Methods as below:
[0032] (1) 0.2 mL of the intestinal digestion group sample solution diluted 2 times with water was mixed with 3.8 mL of a 0.1 mmol / L DPPH ethanol solution to form a sample group.
[0033] (2) 0.2 mL of the intestinal digestion group sample solution diluted 2 times with water was mixed with 3.8 mL of ethanol solution to serve as a control group.
[0034] (3) 0.2mL H 2 O was mixed with 3.8 mL of 0.1 mmol / L DPPH ethanol solution as blank group.
[0035] (4) 0.2mL H 2 O was mixed with 3.8 mL of ethanol solution for zero adjustment.
[0036] (5) The solutions of each group of steps (1), (2), (3) and (4) were put into the dark conditions to react for 30 min.
[0037] (6) Use a microplate reader to measure the absorbance of each group of reaction solutions at a wavelength of 517 nm. The data of the sample group, control group and blank group need to be subtracted and ...
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