A5063289247- Phytochemicals and Antioxidant Activities
- Fermentation and Sensory Analysis
- Horticultural and Viticultural Research
- Essential Oils and Antimicrobial Activity
- Biochemical Analysis and Sensing Techniques
- Listeria monocytogenes in Food Safety
- Biochemical and biochemical processes
- Bee Products Chemical Analysis
- Plant biochemistry and biosynthesis
- Food Quality and Safety Studies
- N-Heterocyclic Carbenes in Organic and Inorganic Chemistry
- Adipose Tissue and Metabolism
- Postharvest Quality and Shelf Life Management
- Plant pathogens and resistance mechanisms
- Microbial Inactivation Methods
- Gout, Hyperuricemia, Uric Acid
- Cocoa and Sweet Potato Agronomy
- Polysaccharides and Plant Cell Walls
- Photonic and Optical Devices
- Pharmacological Effects of Natural Compounds
- Medicinal Plants and Neuroprotection
- Plant-Microbe Interactions and Immunity
- Clostridium difficile and Clostridium perfringens research
- Phytochemistry and Biological Activities
- Food Chemistry and Fat Analysis
Shaanxi Normal University
2019-2025
Ministry of Education of the People's Republic of China
2022-2025
Northwest A&F University
2017-2018
Oregon State University
1995-2017
Previous studies acknowledged that tartaric acid-imparted low-pH contributed to the enhancement of astringency, but in-depth are lacking and underlying mechanisms not clearly understood. This work introduced new insight into effect acid on astringency perception from perspectives complex formation, protein secondary structure, chemical bond type salivary layer fluidity by establishing models using proteins (α-amylase, proteins) tannic acid. Results demonstrated affects wine two mechanisms:...
In this study, the volatility of three typical wine aromas in model was investigated by HS-SPME-GC-MS, NMR, and sensory evaluation as influenced different concentrations structural properties phenolics. Results showed that phenolic fractions (phenolic acids, monomeric/oligomeric polymeric procyanidins) exhibited matrix effects on floral, fruity, aged perception. Physico-chemical analyses together indicated all reduced perceived intensity fruity aroma attributes, displayed stronger retention...
The key aroma compounds and the organoleptic quality of two Chinese Syrah wines from Yunnan Shangri-La region Ningxia Helan mountain were characterized. most important eighty aroma-active identified by Gas Chromatography-Olfactometry. In both samples, ethyl 2-methylpropanoate, 3-methylbutanoate, 3-methylbutyl acetate, 2- 3-methyl-1-butanol, hexanoate, octanoate, 2-phenethyl methional, 3-methylbutanoic acid, hexanoic octanoic β-damascenone, guaiacol, 2-phenylethanol, trans-whiskylactone,...
Hyperuricemia (HUA) is a globally prevalent metabolic disorder characterized by an imbalance in uric acid (UA) production and excretion. In this study, we found that oleanolic (OA), natural pentacyclic triterpene, effectively reduced HUA associated kidney injury C57BL/6J mice. A 12-week OA treatment significantly dose-dependently UA creatinine levels serum urine while suppressing hepatic xanthine oxidase activity Mechanistic analysis revealed modulates the expression of urate transporters...
Green bactericides are excellent strategies for reducing food spoilage. Phloretin was regarded as efficient, broad-spectrum and safe preservative, which showed enormous potential in industry. Inhibitory mechanism of phloretin on Listeria monocytogenes systematically elucidated through integrity cell membrane, intracellular protein content, energy level, nucleic acid morphological character. SEM TEM results minimal injury further proved by a leakage potassium ions, ATP little acid. There were...
Cloudy apple juice (CAJ) is popular due to its potential health benefits and pleasant flavor. However, the common used sterilization methods of CAJ by High hydrostatic pressure (HHP) or high-temperature short time (HTST) still showed many inadequacies. The present work studied impact HHP (400MPa/10 °C/10 min) HTST (98 °C/50s) on CAJs made from a new cultivar Changfu 2 planted in Loess plateau area. We comparatively evaluated microbes inactivation, enzymatic activity, phytochemical...
The thinned young apple is a by-product and generally discarded in the orchard during fruit thinning. polyphenol content of apples about 10 times more than that ripe apples. In our study, antibacterial effect polyphenols (YAP) on halitosis-related bacteria including Porphyromonas gingivalis, Prevotella intermedius, Fusobacterium nucleatum was investigated. minimum inhibitory concentrations YAP against P. intermedia, F. were 8.0, 12.0 mg/ml, while bactericidal 10.0, 14.0 respectively....
Most research concerning pyrazine formation in the Maillard reaction is mainly focused on free amino acids (FAAs), but limited information available effect of peptides and proteins. In this study, three model systems (i.e., glucose native sunflower seed protein, hydrolyzed or FAAs, respectively) were prepared, their volatiles further compared at different heating conditions by using headspace solid-phase microextraction equipped with gas chromatography/mass spectrometry (HS-SPME-GC/MS). It...
Oenological tannins are commercial natural products extracted from different botanical sources, which were widely reported as prominent contributors to wine quality. Research on quality affected by extracts promoted the development of new oenological with low cost and high accessibility. In present study, structure concentration tannin in polyphenol extracts, well their correlation astringency color model wine, was investigated UV spectrophotometer, HPLC, fluorescence quenching, sodium...
We report the fabrication and performance of a novel, high gain photodetector. Basically, device is modulation-doped field effect transistor (MODFET) structure with its channel region made low-temperature MBE-grown GaAs. It exhibits an excellent responsivity 65 A/W at /spl sim/0.87 μm 6.5 perp/1.0 μm. In sub-bandgap range (0.9-1.3 μm) this highest ever reported, to our knowledge, for any GaAs-based device. Thus, appears be ideally suited applications requiring photodetection sensitivity,...
Abstract In the current work, density functional theory calculations were performed to elucidate detailed reaction mechanism for N ‐heterocyclic carbene (NHC)‐catalyzed oxidative ‐acylation of amides with aldehydes affording imide products. According calculated results, is initiated by nucleophilic attack NHC forming zwitterionic intermediate, which can then form Breslow intermediate via proton transfer. The be oxidized go through 1,2‐addition deprotonated ‐sulfonylcarboxamides....
The effect of short-term higher ambient temperature (HT) and continuous vibration (CV) treatment was comparatively characterized by sensory evaluation chemical analysis. Results quantitative descriptive analysis modified frequency (MF) showed that HT causes both in red wine white a decrease fruity floral characters, an unbalance taste, shortness aftertaste length. CV very close characters to control most terms evaluated. Seventy-four volatile compounds were analysed solid phase...
The potential astringency of eight grape cultivars was evaluated based on polyphenol/protein binding. parameters such as weights, sizes, total phenols, flavanols and tannins different tissues were determined, the binding analyzed by SDS-PAGE spectroscopy. Cabernet Sauvignon had highest skin proportion, while Blue French seed proportion. seeds phenolic content, skins content. showed that extracts a better affinity than for saliva proteins, but fluorescence spectra demonstrated interactions...