A5039360149- Antioxidant Activity and Oxidative Stress
- Genomics, phytochemicals, and oxidative stress
- Light effects on plants
- Plant biochemistry and biosynthesis
- Phytochemicals and Antioxidant Activities
- Photosynthetic Processes and Mechanisms
- Tea Polyphenols and Effects
- Plant Parasitism and Resistance
- Food Quality and Safety Studies
- Seed and Plant Biochemistry
- Fermentation and Sensory Analysis
- Plant Gene Expression Analysis
- Moringa oleifera research and applications
- Natural product bioactivities and synthesis
- Plant and animal studies
- Plant-Microbe Interactions and Immunity
- Insect-Plant Interactions and Control
- Chromatography in Natural Products
- Postharvest Quality and Shelf Life Management
- Plant Physiology and Cultivation Studies
- Insect and Pesticide Research
- Free Radicals and Antioxidants
- Microplastics and Plastic Pollution
- Plant Stress Responses and Tolerance
- Selenium in Biological Systems
University of Potsdam
2015-2025
Leibniz Institute of Vegetable and Ornamental Crops
2016-2025
University of Bayreuth
2021-2025
German Institute of Human Nutrition
2014-2022
Leibniz Institute for Agricultural Engineering and Bioeconomy
2022
Leibniz Association
2013-2015
Shizuoka University
2009-2013
Nagasaki University
2013
Technische Universität Braunschweig
2005-2008
Hebrew University of Jerusalem
2005
Malnutrition, poor health, hunger, and even starvation are still the world's greatest challenges. Malnutrition is defined as deficiency of nutrition due to not ingesting proper amounts nutrients by simply eating enough food and/or consuming nutrient-poor in respect daily nutritional requirements. Moreover, malnutrition disease closely associated incidences such diet-related diseases increase particularly low- middle-income states. While foods animal origin often unaffordable low-income...
Carotenoids are the precursors of important fragrance compounds in flowers Osmanthus fragrans Lour. var. aurantiacus, which exhibit highest diversity carotenoid-derived volatiles among flowering plants investigated. A cDNA encoding a carotenoid cleavage enzyme, OfCCD1, was identified from transcripts isolated O. It is shown that recombinant enzymes cleave carotenes to produce α-ionone and β-ionone vitro assays. also found content, volatile emissions, OfCCD1 transcript levels subjected...
From the order Brassicales, different plant organs, such as inflorescences (e.g. broccoli and cauliflower), leaves kale pak choi), heads white red cabbage), well roots bulbs radish turnip), are frequently consumed brassicaceaous vegetables. The Brassicales is characterized by a specific group of secondary metabolites, namely glucosinolates. Glucosinolates their breakdown products isothiocyanates linked to conferring beneficial health effects. In addition, some studies have also highlighted...
Reduction of nitrogen application in crop production is desirable for ecological and health-related reasons. Interestingly, deficiency can lead to enhanced concentrations polyphenols plants. The reason this still under discussion. plants' response low concentration interact with other factors, example radiation intensity. We cultivated red green leaf lettuce hydroponically a Mediterranean greenhouse, supplying three different levels (12 mM, 3 0.75 mM), either full or reduced (-50%) In both...
As a critical part of plant immunity, cells that are attacked by pathogens undergo rapid transcriptional reprogramming to minimize virulence. Many bacterial phytopathogens use type III effector (T3E) proteins interfere with defense responses, including this reprogramming. Here, we show Xanthomonas outer protein S (XopS), T3E campestris pv. vesicatoria (Xcv), interacts and inhibits proteasomal degradation WRKY40, regulator gene expression. Virus-induced silencing WRKY40 in pepper (Capsicum...
Purple-fleshed sweet potatoes (Ipomoea batatas L.) contain a very complex anthocyanin profile due to the presence of several non-, mono-, and diacylated glucosides cyanidin peonidin. In this study, composition four Japanese purple potato cultivars (Chiran Murasaki, Tanegashima Naka Purple Sweet) were investigated by HPLC-DAD ESI-MSn analyses. The HPLC chromatograms different show remarkable variation two major pigments, cyanidin-3-(6''-caffeoylsophoroside)-5-glucoside...
As a defense response to attacks by herbivores such as the smaller tea tortrix (Adoxophyes honmaiYasuda), (Camellia sinensis) leaves emit numerous volatiles (Z)-3-hexen-1-ol, linalool, α-farnesene, benzyl nitrile, indole, nerolidol, and ocimenes in higher concentration. Attack of Kanzawa spider mites (Tetranychus kanzawai Kishida), another major pest insect crops, induced emission α-farnesene from leaves. The exogenous application jasmonic acid volatile blend that was similar, although not...
Green algae are of great economic importance. Seaweed is consumed fresh or as seasoning in Japan. The commercial value determined by quality, color, and flavor also strongly influenced the production area. Our research, based on solid phase microextraction gas chromatography mass spectrometry (SPME-GC-MS), has revealed that volatile compounds differ intensely four varieties green algae. Accordingly, 41 major were identified. Heptadecene was most abundant compound from Okayama (Ulva...
Tea is one of the most consumed beverages in world and its quality influenced by geographical origin production methods. This study focuses on volatile aroma components 38 tea products from China, Japan, Indonesia, Sri-Lanka, Chinese Taipei; among them 7 green teas, 13 oolong 18 black teas. The volatiles were extracted infusions using PorapakQ-resin, concentrated, analyzed gas chromatography-mass spectrometry. identified authentic reference compounds or preliminary based their mass spectra....
The degeneration of the retinal pigment epithelium caused by oxidative damage is a stage development in age-related macular (AMD). carotenoid lutein major that may reduce incidence and progression AMD, but underlying mechanism currently not fully understood. Carotenoids are known to be direct antioxidants. However, carotenoids can also activate cellular pathways resulting indirect antioxidant effects. Here, we investigate influence on activation nuclear factor erythroid 2-related 2 (Nrf2)...
Pak choi (Brassica rapa subsp. chinensis) is rich in secondary metabolites and contains numerous antioxidants, including flavonoids; hydroxycinnamic acids; carotenoids; chlorophylls; glucosinolates, which can be hydrolyzed to epithionitriles, nitriles, or isothiocyanates. Here, we investigate the effect of reduced exposure ultraviolet B (UVB) UV (UVA UVB) light at four different developmental stages pak choi. We found that both plant morphology metabolite profiles were affected by UVB UV,...
Abstract In response to preharvest priming with exogenous methyl jasmonate (MeJA), tea plants adjust their physiological behavior at the molecular level. The whole-organism reconfiguration of aroma formation from precursor storage is poorly understood. this study, we performed iTRAQ proteomic analysis and identified 337, 246, 413 differentially expressed proteins in leaves primed MeJA for 12 h, 24 48 respectively. Furthermore, a total 266 nonvolatile 100 volatile differential metabolites...
Carotenoids differentiate among tea cultivars and play role in contributing aroma flavor colour appearance products. In this study, 3 carotenes 16 xanthophylls were accurately quantified of 0.79–1.56 × 103 μg g−1 15 possessing leaves different colours. Lutein β-carotene accounted for >80% total carotenoids. Single carotenoid accumulation patterns their correlations with chlorophylls primary metabolites (amino acids, alkaloids, saccharides) elucidated. Tea processing (withering, 'kill-green,'...
Production and the quality of tomato fruits have a strong economic relevance. Microorganisms such as plant growth-promoting bacterium (PGPB) Kosakonia radicincitans (DSM 16656) been demonstrated to improve shoot root growth young plants, but data on yield increase fruit by K. are lacking.This study investigated how affects fruits. After inoculation seeds with or sodium chloride buffer control solution, stalk length, first flowering amount ripened produced inoculated non-inoculated plants...
Flavonoids, carotenoids, and chlorophylls were characterized in microgreens leaves of pea (Pisum sativum) lupin (Lupinus angustifolius) as these metabolites change during ontogeny. All higher the for both species. Acylated quercetin kaempferol sophorotrioses predominant pea. Genistein malonylated chrysoeriol lupin. Further, impact bread making on using material two ontogenetic stages an added ingredient wheat-based was assessed. In 'pea microgreen bread' no decrease found with regard to...