- Phytochemicals and Antioxidant Activities
- Botanical Research and Applications
- Tea Polyphenols and Effects
- Antioxidant Activity and Oxidative Stress
- Coffee research and impacts
- Phase Equilibria and Thermodynamics
- Free Radicals and Antioxidants
- Pharmacology and Obesity Treatment
- Food composition and properties
- GABA and Rice Research
- Chemical Thermodynamics and Molecular Structure
- Muscle metabolism and nutrition
- Medicinal Plants and Bioactive Compounds
- Adipokines, Inflammation, and Metabolic Diseases
- Chemical synthesis and alkaloids
- Field-Flow Fractionation Techniques
- Plant Micronutrient Interactions and Effects
- Seed and Plant Biochemistry
- Medicinal Plants and Neuroprotection
- Analytical Chemistry and Chromatography
- Microbial Metabolites in Food Biotechnology
- Diet and metabolism studies
- Fermentation and Sensory Analysis
- Biochemical effects in animals
- Vitamin C and Antioxidants Research
University of Illinois Urbana-Champaign
2015-2025
Van Drunen Farms (United States)
2016-2025
N.D. Zelinsky Institute of Organic Chemistry
2020
Covance (United States)
2010
Scripps Institution of Oceanography
2005
University of California, San Diego
2005
Institute of Thermophysics
1997
American Petroleum Institute
1992
Red rice (Oryza sativa L.) that has a red (reddish brown) bran layer in de-hulled is known to contain rich biofunctional components. Germination an effective technique improve the nutritional quality, digestibility, and flavor of rice. Ultrasonication, form physical stimulation, been documented as novel approach quality plant-based food. This study was undertaken test use ultrasound enhance value Ultrasonication (5min, 16W/L) applied during soaking or after 66h germination. Changes...
Red wine, an alcoholic beverage is composed of a spectrum complex compounds such as water, alcohol, glycerol, organic acid, carbohydrates, polyphenols, and minerals well volatile compounds. Major factors that affect the levels phenolic in red wines are variety grapes storage wines. Among constituents play crucial role attributes including color mouthfeel confer beneficial properties on health. Most importantly, flavanols, flavonols, flavanones, flavones, tannins, anthocyanins,...
Commercial whole coffee fruit extracts and powder samples were analyzed for chlorogenic acids (CGA), caffeine antioxidant activities. CGA characterized by LC-MS(n) HPLC accordingly, quantified UV absorbance. ORAC, HORAC, NORAC, SORAC SOAC (antioxidant capacities) assessed. Three caffeoylquinic acids, three feruloylquinic dicaffeoylquinic one p-coumaroylquinic acid, two caffeoylferuloylquinic putative lactones quantified, along with a methyl ester of 5-caffeoylquinic acid (detected in sample,...
Air-dried whole coffee fruits, beans, and husks from China, India, Mexico were analyzed for their chlorogenic acids (CGA), caffeine, polyphenolic content. Analysis was by HPLC Orbitrap exact mass spectrometry. Total phenol, total flavonol, antioxidant capacity measured. The hydroxycinnamate profile consisted of caffeoylquinic acids, feruloyquinic dicaffeoylquinic caffeoyl-feruloylquinic acids. A range flavan-3-ols as well flavonol conjugates detected. CGA content similar both Mexican Indian...
In this study, quality characteristics of broccoli, kale, and spinach dried with hot air drying (AD), freeze (FD) Refractance Window (RWD) were investigated, including phenolics, flavonoids, vitamins, glucosinolates, color, Tg microstructure. Broccoli, kale samples using RWD had the highest total phenolics content (8.50, 18.77 12.40 mg/g, respectively). The retention flavonoids was found in FD broccoli (8.98 mg/g), (19.51 (9.31 mg/g). FD-samples followed by RWD. also showed less color...
The antioxidative mechanism of action betalains is significant interest because these pigments are recently emerging as highly bio-active natural compounds with potential benefits to human health. Betanidin, the basic betacyanin, comprises 5,6-dihydroxyl moiety, which results in its high antioxidant activity. Oxidation betanidin by voltammetric techniques and chro matographic identification oxidation products spectrophotometric mass spectrometric detection (LC–DAD-MS/MS) were performed. Two...
Antioxidant activity of different types tea (green, oolong, black, pu-erh ) were measured using modern methods.Several commercially available teas, from various manufacturers tested for antioxidant content the amperometric method, data is displayed here.Data gathered about these samples can be used to estimate quality and type tea.The collected this method also important when trying account normal daily consumable healthy people patients clinical therapy.
A comprehensive nonenzymatic oxidation mechanism in betanin plant pigment as well its derivatives, 2-decarboxybetanin, 17-decarboxybetanin, 2,17-bidecarboxybetanin, and neobetanin, the presence of ABTS cation radicals was investigated by LC-DAD-ESI-MS/MS. The main compounds formed during first step 2-decarboxybetanin are 2-decarboxy-2,3-dehydrobetanin 2-decarboxyneobetanin, respectively. In contrast to betanin, reaction for includes more pathways. Parallel transformation quinone methide...
Leafy green vegetables contain essential nutrients and are frequently consumed for their perceived health benefits. The purpose of this study was to profile the nutritional natural bioactive phytochemical compounds extracted from freeze-dried spinach kale compare them with our previously published purslane results. Novel research suggests that these leafy greens an abundance fatty acids, amino organic vitamins, minerals, which can reduce risk many chronic diseases. LC-MS/MS screening...
Sprouted grains are gaining popularity as functional food ingredients. This study aimed to evaluate the lipid and fatty acid composition of eight sprouted (millet, amaranth, quinoa, wheat, rye, barley, buckwheat, oat). The method used was germination for up 72 h at temperatures ranging from 19-23 °C. In general, content increased in various sprouted, providing a rich source polyunsaturated acids. % oil yield ranged 1.17 ± 0.02% rye 5.71 0.26% amaranth. Germinated oat showed greatest increase...
Betacyanins are a group of water-soluble red-violet compounds containing nitrogen in their structure. These biosynthesized red beetroot (Beta vulgaris L.), widely consumed vegetable that contains significant amounts nutritious and bioactive which also found dietary supplements. This contribution presents results betacyanin thermal oxidation (resulting dehydrogenation) interrelated with decarboxylation selected acetate/phosphate buffers at pH 3-8 85 °C, may be particular significance for...