A5051202834- Phytochemicals and Antioxidant Activities
- Cancer-related Molecular Pathways
- Cancer Mechanisms and Therapy
- Chromatography in Natural Products
- Essential Oils and Antimicrobial Activity
- Dyeing and Modifying Textile Fibers
- Synthesis and biological activity
- Analytical Chemistry and Chromatography
- Tea Polyphenols and Effects
- Bee Products Chemical Analysis
- melanin and skin pigmentation
- Biochemical Analysis and Sensing Techniques
Jiangxi Academy of Forestry
2022-2024
Nanchang University
2019
Abstract The chemical composition and in vitro antioxidant activity of the essential oil propolis (EOP) collected from 25 locations China was investigated. Steam‐distillation extraction used to extract EOP, identified by GC/MS. activities EOP were also measured. result showed that a total 406 compounds detected EOP. major Chinese cedrol, γ ‐eudesmol, benzyl alcohol, phenethyl 2‐methoxy‐4‐vinylphenol, 3,4‐dimethoxystyrene guaiol. Principal component analysis revealed significant correlation...
We synthesized a series of quinazolinone derivates as tyrosinase inhibitors and evaluated their inhibition constants. 2-(2,6-dimethylhepta-1,5-dien-1-yl)quinazolin-4(3H)-one (Q1) from the natural citral. The concentration, which led to 50% activity loss Q1, was 103 ± 2 μM (IC50 = μM). Furthermore, we considered Q1 be mixed-type reversible inhibitor, determined KI KIS constants 117.07 423.63 μM, respectively. Our fluorescence experiment revealed that could interact with substrates tyrosine...
Abstract 2H‐pyran compound 1 synthesized from 6‐methylpyridine‐2,4‐diol and citral, has been used for Cu‐catalyzed N ‐arylation with a range of arylboric acids to obtain arylated pyranopyridine core structure derivatives (yield up 77 %). Among them, 3 h exhibited much better inhibitory effect on HepG2 liver cancer cells compared the IC 50 value was 5.3 μM following exposure newly (herein named short in this paper), which lower than that cisplatin (6.5 μM). Meanwhile, cell‐cycle arrest...
In order to explore a new method detect the freshness of lotus seeds, seeds stored for 0, 1, 2, and 3 years, respectively, were used as experimental materials analyzed by DAPCI-MS (desorption atmospheric pressure chemical ionization-mass spectrometry). The obtained data processed principal component analysis (PCA) backpropagation artificial neural networks (BP-ANNs). result showed that could obtain abundant material information from slice surface seeds. BP-ANNs model be applied not only...