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  • 1
    Online Resource
    Online Resource
    African Nightshade (Solanum scabrum Mill.): Impact of Cultivation and Plant Processing on Its Health Promoting Potential as Determined in a Human Liver Cell Model (2018)
    Berlin : Humboldt-Universität zu Berlin
    Details
    UID:
    edochu_18452_21205
    Format: 1 Online-Ressource (20 Seiten)
    Content: Plant cultivation and processing may impact nutrient and phytochemical content of vegetables. The present study aimed at determining the influence of cultivation and processing on the health promoting capacity of African nightshade (Solanum scabrum Mill.) leaves, an indigenous vegetable, rich in nutrients and phytochemicals. Anti-genotoxicity against the human liver carcinogen aflatoxin B1 (AFB1) as determined by the comet assay and radical oxygen species (ROS) scavenging capacity of ethanolic and aqueous extracts were investigated in human derived liver (HepG2) cells. ROS scavenging activity was assessed using electron paramagnetic spin resonance and quantification of ARE/Nrf2 mediated gene expression. The cultivation was done under different environmental conditions. The processing included fermentation and cooking; postharvest ultraviolet irradiation (UV-C) treatment was also investigated. Overall, S. scabrum extracts showed strong health promoting potential, the highest potential was observed with the fermented extract, which showed a 60% reduction of AFB1 induced DNA damage and a 38% reduction in FeSO4 induced oxidative stress. The content of total polyphenols, carotenoids and chlorophylls was indeed affected by cultivation and processing. Based on the present in vitro findings consumption of S. scabrum leaves could be further encouraged, preferentially after cooking or fermentation of the plant.
    Content: Peer Reviewed
    In: Nutrients, Basel : MDPI, 10,2018,10
    Language: English
    DOI: 10.3390/nu10101532
    DOI: 10.18452/20436
    URN: urn:nbn:de:kobv:11-110-18452/21205-6
    URL: Volltext  (kostenfrei)
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    HU Berlin
  • 2
    Online Resource
    Online Resource
    Intercropping Induces Changes in Specific Secondary Metabolite Concentration in Ethiopian Kale (Brassica carinata) and African Nightshade (Solanum scabrum) under Controlled Conditions (2017)
    Berlin : Humboldt-Universität zu Berlin
    Details
    UID:
    edochu_18452_21671
    Format: 1 Online-Ressource (12 Seiten)
    Content: Intercropping is widespread in small-holder farming systems in tropical regions and is also practiced in the cultivation of indigenous vegetables, to alleviate the multiple burdens of malnutrition. Due to interspecific competition and/or complementation between intercrops, intercropping may lead to changes in plants accumulation of minerals and secondary metabolites and hence, alter nutritional quality for consumers. Intercropping aims to intensify land productivity, while ensuring that nutritional quality is not compromised. This study aimed to investigate changes in minerals and secondary plant metabolites in intercropped Brassica carinata and Solanum scabrum, two important African indigenous vegetables, and evaluated the suitability of this combination for dryer areas. B. carinata and S. scabrum were grown for 6 weeks under controlled conditions in a greenhouse trial. Large rootboxes (8000 cm3 volume) were specifically designed for this experiment. Each rootbox was planted with two plants, either of the same plant species (mono) or one of each plant species (mixed). A quartz sand/soil substrate was used and fertilized adequately for optimal plant growth. During the last 4 weeks of the experiment, the plants were either supplied with optimal (65% WHC) or low (30% WHC) irrigation, to test the effect of a late-season drought. Intercropping increased total glucosinolate content in B. carinata, while maintaining biomass production and the contents of other health related minerals in both B. carinata and S. scabrum. Moreover, low irrigation led to an increase in carotene accumulation in both mono and intercropped S. scabrum, but not in B. carinata, while the majority of kaempferol glycosides and hydroxycinnamic acid derivatives of both species were decreased by intercropping and drought treatment. This study indicates that some health-related phytochemicals can be modified by intercropping or late-season drought, but field validation of these results is necessary before definite recommendation can be made to stakeholders.
    Content: Peer Reviewed
    In: Frontiers in plant science, Lausanne : Frontiers Media S.A., 08,2017
    Language: English
    DOI: 10.3389/fpls.2017.01700
    DOI: 10.18452/20927
    URN: urn:nbn:de:kobv:11-110-18452/21671-5
    URL: Volltext  (kostenfrei)
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    HU Berlin
  • 3
    Online Resource
    Online Resource
    Selected Plant Metabolites Involved in Oxidation-Reduction Processes during Bud Dormancy and Ontogenetic Development in Sweet Cherry Buds (Prunus avium L.) (2018)
    Berlin : Humboldt-Universität zu Berlin
    Details
    UID:
    edochu_18452_21146
    Format: 1 Online-Ressource (19 Seiten)
    Content: Many biochemical processes are involved in regulating the consecutive transition of different phases of dormancy in sweet cherry buds. An evaluation based on a metabolic approach has, as yet, only been partly addressed. The aim of this work, therefore, was to determine which plant metabolites could serve as biomarkers for the different transitions in sweet cherry buds. The focus here was on those metabolites involved in oxidation-reduction processes during bud dormancy, as determined by targeted and untargeted mass spectrometry-based methods. The metabolites addressed included phenolic compounds, ascorbate/dehydroascorbate, reducing sugars, carotenoids and chlorophylls. The results demonstrate that the content of phenolic compounds decrease until the end of endodormancy. After a long period of constancy until the end of ecodormancy, a final phase of further decrease followed up to the phenophase open cluster. The main phenolic compounds were caffeoylquinic acids, coumaroylquinic acids and catechins, as well as quercetin and kaempferol derivatives. The data also support the protective role of ascorbate and glutathione in the para- and endodormancy phases. Consistent trends in the content of reducing sugars can be elucidated for the different phenophases of dormancy, too. The untargeted approach with principle component analysis (PCA) clearly differentiates the different timings of dormancy giving further valuable information.
    Content: Peer Reviewed
    In: Molecules, Basel : MDPI, 23,2018,5, Seiten 1197/1-1197/19
    Language: English
    DOI: 10.3390/molecules23051197
    DOI: 10.18452/20397
    URN: urn:nbn:de:kobv:11-110-18452/21146-9
    URL: Volltext  (kostenfrei)
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    HU Berlin
  • 4
    Online Resource
    Online Resource
    Cultivation of selected halophytes in saline indoor farming and modulation of cultivation conditions to optimize metabolite profiles for human nutrition (2023)
    Potsdam
    Details
    UID:
    gbv_1887265090
    Format: 1 Online-Ressource (178 Seiten, 22157 KB) , Illustrationen, Diagramme
    Content: With the many challenges facing the agricultural system, such as water scarcity, loss of arable land due to climate change, population growth, urbanization or trade disruptions, new agri-food systems are needed to ensure food security in the future. In addition, healthy diets are needed to combat non-communicable diseases. Therefore, plant-based diets rich in health-promoting plant secondary metabolites are desirable. A saline indoor farming system is representing a sustainable and resilient new agrifood system and can preserve valuable fresh water. Since indoor farming relies on artificial lighting, assessment of lighting conditions is essential. In this thesis, the cultivation of halophytes in a saline indoor farming system was evaluated and the influence of cultivation conditions were assessed in favor of improving the nutritional quality of halophytes for human consumption. Therefore, five selected edible halophyte species (Brassica oleracea var. palmifolia, Cochlearia officinalis, Atriplex hortensis, Chenopodium quinoa, and Salicornia europaea) were cultivated in saline indoor farming. [...]
    Note: Kumulative Dissertation , Dissertation University of Potsdam 2024
    Additional Edition: Erscheint auch als Druck-Ausgabe Fitzner, Maria Cultivation of selected halophytes in saline indoor farming and modulation of cultivation conditions to optimize metabolite profiles for human nutrition Potsdam, 2023
    Language: English
    Keywords: Hochschulschrift
    DOI: 10.25932/publishup-62697
    URN: urn:nbn:de:kobv:517-opus4-626974
    URL: kostenfrei
    URL: kostenfrei
    Author information: Baldermann, Susanne 1977-
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    Open Access Request
    UB Potsdam
  • 5
    Book
    Book
    Light-modulated biosynthesis of carotenoids in Brassica rapa ssp. chinensis and the activation of Nrf2 by lutein in human retinal pigment epithelial cells (2018)
    Potsdam
    Details
    UID:
    gbv_1067242856
    Format: 98 Seiten , Illustrationen, Diagramme
    Note: Publication-based dissertation , Dissertation Universität Potsdam 2019
    Language: English
    Keywords: Carotinoide ; Lutein ; Hochschulschrift
    URL: Inhaltsverzeichnis
    Author information: Börnke, Frederik 1971-
    Author information: Frede, Katja
    Author information: Baldermann, Susanne 1977-
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  • 6
    Online Resource
    Online Resource
    Metabolite Profiling Reveals a Specific Response in Tomato to Predaceous Chrysoperla carnea Larvae and Herbivore(s)-Predator Interactions with the Generalist Pests Tetranychus urticae and Myzus persicae (2016)
    Berlin : Humboldt-Universität zu Berlin
    Details
    UID:
    edochu_18452_21873
    Format: 1 Online-Ressource (14 Seiten)
    Content: The spider mite Tetranychus urticae Koch and the aphid Myzus persicae (Sulzer) both infest a number of economically significant crops, including tomato (Solanum lycopersicum). Although used for decades to control pests, the impact of green lacewing larvae Chrysoperla carnea (Stephens) on plant biochemistry was not investigated. Here, we used profiling methods and targeted analyses to explore the impact of the predator and herbivore(s)-predator interactions on tomato biochemistry. Each pest and pest-predator combination induced a characteristic metabolite signature in the leaf and the fruit thus, the plant exhibited a systemic response. The treatments had a stronger impact on non-volatile metabolites including abscisic acid and amino acids in the leaves in comparison with the fruits. In contrast, the various biotic factors had a greater impact on the carotenoids in the fruits. We identified volatiles such as myrcene and α-terpinene which were induced by pest-predator interactions but not by single species, and we demonstrated the involvement of the phytohormone abscisic acid in tritrophic interactions for the first time. More importantly, C. carnea larvae alone impacted the plant metabolome, but the predator did not appear to elicit particular defense pathways on its own. Since the presence of both C. carnea larvae and pest individuals elicited volatiles which were shown to contribute to plant defense, C. carnea larvae could therefore contribute to the reduction of pest infestation, not only by its preying activity, but also by priming responses to generalist herbivores such as T. urticae and M. persicae. On the other hand, the use of C. carnea larvae alone did not impact carotenoids thus, was not prejudicial to the fruit quality. The present piece of research highlights the specific impact of predator and tritrophic interactions with green lacewing larvae, spider mites, and aphids on different components of the tomato primary and secondary metabolism for the first time, and provides cues for further in-depth studies aiming to integrate entomological approaches and plant biochemistry.
    Content: Peer Reviewed
    In: Lausanne : Frontiers Media S.A., 7
    Language: English
    DOI: 10.18452/21125
    DOI: 10.3389/fpls.2016.01256
    URN: urn:nbn:de:kobv:11-110-18452/21873-8
    URL: Volltext  (kostenfrei)
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    HU Berlin
  • 7
    Online Resource
    Online Resource
    The effect of protected cultivation on the nutritional quality of lettuce (Lactuca sativa var capitata L.) with a focus on antifogging additives in polyolefin covers (2023)
    Potsdam
    Details
    UID:
    gbv_1885488475
    Format: 1 Online-Ressource (IV, 132 Seiten, 17917 KB) , Illustrationen, Diagramme
    Content: Protected cultivation in greenhouses or polytunnels offers the potential for sustainable production of high-yield, high-quality vegetables. This is related to the ability to produce more on less land and to use resources responsibly and efficiently. Crop yield has long been considered the most important factor. However, as plant-based diets have been proposed for a sustainable food system, the targeted enrichment of health-promoting plant secondary metabolites should be addressed. These metabolites include carotenoids and flavonoids, which are associated with several health benefits, such as cardiovascular health and cancer protection. Cover materials generally have an influence on the climatic conditions, which in turn can affect the levels of secondary metabolites in vegetables grown underneath. Plastic materials are cost-effective and their properties can be modified by incorporating additives, making them the first choice. However, these additives can migrate and leach from the material, resulting in reduced service life, ...
    Note: publikationsbasierte Dissertation , Dissertation Universität Potsdam 2024
    Additional Edition: Erscheint auch als Druck-Ausgabe Harbart, Vanessa The effect of protected cultivation on the nutritional quality of lettuce (Lactuca sativa var capitata L.) with a focus on antifogging additives in polyolefin covers Potsdam, 2023
    Language: English
    Keywords: Hochschulschrift
    DOI: 10.25932/publishup-62937
    URN: urn:nbn:de:kobv:517-opus4-629375
    URL: kostenfrei
    URL: kostenfrei
    Author information: Böhm, Volker 1961-
    Author information: Schwerdtle, Tanja 1975-
    Author information: Baldermann, Susanne 1977-
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    Open Access Request
    UB Potsdam
  • 8
    Book
    Book
    The effect of protected cultivation on the nutritional quality of lettuce (Lactuca sativa var capitata L.) with a focus on antifogging additives in polyolefin covers (2023)
    Potsdam
    Details
    UID:
    gbv_1885488696
    Format: IV, 132 Seiten , Illustrationen, Diagramme
    Content: Protected cultivation in greenhouses or polytunnels offers the potential for sustainable production of high-yield, high-quality vegetables. This is related to the ability to produce more on less land and to use resources responsibly and efficiently. Crop yield has long been considered the most important factor. However, as plant-based diets have been proposed for a sustainable food system, the targeted enrichment of health-promoting plant secondary metabolites should be addressed. These metabolites include carotenoids and flavonoids, which are associated with several health benefits, such as cardiovascular health and cancer protection. Cover materials generally have an influence on the climatic conditions, which in turn can affect the levels of secondary metabolites in vegetables grown underneath. Plastic materials are cost-effective and their properties can be modified by incorporating additives, making them the first choice. However, these additives can migrate and leach from the material, resulting in reduced service life, ...
    Note: publikationsbasierte Dissertation , Dissertation Universität Potsdam 2024
    Additional Edition: Erscheint auch als Online-Ausgabe Harbart, Vanessa The effect of protected cultivation on the nutritional quality of lettuce (Lactuca sativa var capitata L.) with a focus on antifogging additives in polyolefin covers Potsdam, 2023
    Language: English
    Keywords: Hochschulschrift
    Author information: Böhm, Volker 1961-
    Author information: Schwerdtle, Tanja 1975-
    Author information: Baldermann, Susanne 1977-
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    UB Potsdam get availability status
  • 9
    Book
    Book
    Cultivation of selected halophytes in saline indoor farming and modulation of cultivation conditions to optimize metabolite profiles for human nutrition (2023)
    Potsdam
    Details
    UID:
    gbv_188726731X
    Format: 178 Seiten , Illustrationen, Diagramme
    Content: With the many challenges facing the agricultural system, such as water scarcity, loss of arable land due to climate change, population growth, urbanization or trade disruptions, new agri-food systems are needed to ensure food security in the future. In addition, healthy diets are needed to combat non-communicable diseases. Therefore, plant-based diets rich in health-promoting plant secondary metabolites are desirable. A saline indoor farming system is representing a sustainable and resilient new agrifood system and can preserve valuable fresh water. Since indoor farming relies on artificial lighting, assessment of lighting conditions is essential. In this thesis, the cultivation of halophytes in a saline indoor farming system was evaluated and the influence of cultivation conditions were assessed in favor of improving the nutritional quality of halophytes for human consumption. Therefore, five selected edible halophyte species (Brassica oleracea var. palmifolia, Cochlearia officinalis, Atriplex hortensis, Chenopodium quinoa, and Salicornia europaea) were cultivated in saline indoor farming. [...]
    Note: Kumulative Dissertation , Dissertation University of Potsdam 2024
    Additional Edition: Erscheint auch als Online-Ausgabe Fitzner, Maria Cultivation of selected halophytes in saline indoor farming and modulation of cultivation conditions to optimize metabolite profiles for human nutrition Potsdam, 2023
    Language: English
    Keywords: Hochschulschrift
    Author information: Baldermann, Susanne 1977-
    Library Location Call Number Volume/Issue/Year Availability
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    Book
    UB Potsdam get availability status
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