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  • 1
    Format: VII, 145 S. , Ill., graph. Darst. , 210 mm x 148 mm
    Edition: 1. Aufl.
    ISBN: 9783895747632
    Series Statement: Schriftenreihe Agrarwissenschaft 27
    Note: Zsfassung in dt. Sprache , Zugl.: Berlin, Humboldt-Univ., Diss., 2011
    Language: English
    Subjects: Agriculture, Forestry, Horticulture, Fishery, Domestic Science , Biology
    RVK:
    RVK:
    Keywords: Gemüsebau ; Nachhaltigkeit ; Mykorrhizierung ; Augenbohne ; VA-Mykorrhiza ; Hochschulschrift
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  • 2
    Format: VII, 145 Seiten , Ill., graph. Darst. , 21 cm
    ISBN: 978-3-89574-763-2
    Series Statement: Schriftenreihe Agrarwissenschaft 27
    Note: Text engl.
    Language: English
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  • 3
    Format: VII, 145 S. , Ill., graph. Darst.
    Note: Berlin, Humboldt-Univ., Diss., 2011
    Language: English
    Subjects: Agriculture, Forestry, Horticulture, Fishery, Domestic Science , Biology
    RVK:
    RVK:
    Keywords: Gemüsebau ; Nachhaltigkeit ; Mykorrhizierung ; Augenbohne ; VA-Mykorrhiza ; Hochschulschrift
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  • 4
    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
    URL: Volltext  (kostenfrei)
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  • 5
    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
    URL: Volltext  (kostenfrei)
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