Haruna Baba, Yoshikazu Ohtsuka, Hidenori Haruna, Tsubasa Lee, Satoru Nagata, Masato Maeda, Yuichiro Yamashiro, Toshiaki Shimizu,
Rooibos tea is known to be caffeine free with abundant flavonoids. Aspalathin and nothofagin, the main flavonoids contained in Rooibos tea, have stronger anti-oxidative activity than other ... can induce inflammation, the anti-inflammatory effects of Rooibos tea were investigated using a rat colitis model. ... were divided into two groups: one group given Rooibos tea, and one given water. After four weeks ... to induce colitis in rodents, with or without Rooibos tea to evaluate its anti-inflammatory activity. Clinical ...
Tópico(s): Natural product bioactivities and synthesis
2009 - Wiley | Pediatrics International
M. Juráni, D. Lamošová, Mariana Máčajová, Ľubor Košťál, Elizabeth Joubert, M Greksák,
... to determine the effects of the treatment with rooibos tea (Aspalathus linearis), a natural source of flavonoid ... japonica). 2. Substitution of drinking water with traditional rooibos tea or diet supplementation with ground rooibos tea affected body weight of Japanese quail up ... of age. The body weight of males drinking rooibos tea or eating rooibos-supplemented food decreased significantly. There was a trend ... in the body weight of hens fed the rooibos-supplemented diet. Although rooibos treatment did not significantly ...
Tópico(s): Biochemical Analysis and Sensing Techniques
2008 - Taylor & Francis | British Poultry Science
Heidi‐Jayne Hawkins, Rhoda Malgas, Estelle Biénabe,
... for the production of an herbal beverage called 'rooibos' or 'rooibos tea'. Small-scale farmers also harvest A. linearis ... of wild A. linearis. We hypothesized that 1) rooibos ecotypes are ecologically distinct (occurring in different plant communities defined by environmental variables); 2) rooibos ecotypes are functionally distinct due to variance in water use efficiency; and 3) rooibos ecotypes are associated with threatened vegetation types/species, making populations of wild rooibos ecotypes worthy of conservation. Ecotypes of wild rooibos ...
Tópico(s): Conservation, Biodiversity, and Resource Management
2010 - Elsevier BV | South African Journal of Botany
Dolapo Olaitan Awoniyi, Yapo Guillaume Aboua, Jeanine L. Marnewick, S. S. du Plesis, Nicole Brooks,
... of oxidative stress by an indigenous herbal tea, rooibos, Chinese green tea and commercial rooibos and green tea supplements in rat testicular tissue. ... rats (n = 60) were fed with either fermented rooibos, “green” rooibos, Chinese green tea, commercial rooibos or green tea supplements for ten weeks. Oxidative ... the testicular tissue of rats that consumed fermented rooibos, green tea and rooibos supplement as compared to the control. The glutathione ... 0.05) decreased in rats that consumed the rooibos supplement, while lipid peroxidation measured as thiobarbituric acid ...
Tópico(s): Antioxidant Activity and Oxidative Stress
2011 - Academic Journals | AFRICAN JOURNAL OF BIOTECHNOLOGY
Ilona Koch, Magdalena Müller, Elizabeth Joubert, Marieta van der Rijst, Tormod Næs,
Rooibos samples were collected throughout the 2009 harvesting season from different geographic areas in the Western Cape, ... producers to capture as much potential variation in rooibos sensory characteristics as possible. The quality (i.e. ... grades. Using descriptive analysis sensory profiles of the rooibos samples were developed and 121 aroma, flavor, taste, and mouthfeel descriptors were generated. A rooibos sensory wheel was created by selecting 27 flavor, ... friendly overview of the sensory descriptors associated with rooibos. The most frequently occurring descriptors were selected to ...
Tópico(s): Meat and Animal Product Quality
2011 - Elsevier BV | Food Research International
Till Breiter, Christian Laue, Gaby Kressel, Stephanie Gröll, Ulrich H. Engelhardt, Andreas Hahn,
... has been conducted using a placebo and different rooibos drinks (rooibos tea and an isolated active fraction) from unfermented rooibos (Aspalathus linearis). Blood and urine samples were collected ... the metabolites were detected after administration of both rooibos formulations. In plasma samples characteristic unchanged flavonoids derived from unfermented rooibos (e.g. aspalathin) were detected in trace quantities ... changes in Table 5 after ingestion of both rooibos formulations. On average a total of 0.76 ...
Tópico(s): Traditional Chinese Medicine Analysis
2011 - Elsevier BV | Food Chemistry
Theresa Beelders, Gunnar O. Sigge, Elizabeth Joubert, Dalene de Beer, André de Villiers,
Rooibos tea, produced from the endemic South African shrub Aspalathus linearis, has various health-promoting benefits which ... step towards documenting the protective effects associated with rooibos tea consumption. Reversed phase liquid chromatographic (RP-LC) methods currently employed in the quantitative analysis of rooibos are, however, hampered by limited resolution and/or ... the RP-LC separation of the 15 principal rooibos tea phenolics on a 1.8 μm phase ... and gradient conditions provided complete separation of these rooibos phenolics on a 1.8 μm C18 phase ...
Tópico(s): Tea Polyphenols and Effects
2011 - Elsevier BV | Journal of Chromatography A
Wei Chen, Ikhwan Resmala Sudji, Erjia Wang, Elizabeth Joubert, B.-E. Van Wyk, Michaël Wink,
Rooibos leaves and fine stems (Aspalathus linearis; Fabaceae) are increasingly enjoyed as herbal tea, largely in fermented ( ... form, but also in unfermented (unoxidised) green form. Rooibos is rich in antioxidant polyphenols, with the dihydrochalcone, ... as model organism to investigate the effect of rooibos extracts against oxidative stress in vivo. In a high glucose environment, C. elegans treated with rooibos extract exhibited an extended lifespan. Furthermore, green rooibos was a more potent antioxidant than red rooibos, ...
Tópico(s): Tea Polyphenols and Effects
2012 - Elsevier BV | Phytomedicine
Dolapo Olaitan Awoniyi, Yapo Guillaume Aboua, Jeanine L. Marnewick, Nicole Brooks,
... This study compares the modulation of OS by rooibos, Chinese green tea and commercial rooibos and green tea supplements in rat sperm. Male Wistar rats ( n = 60) were supplemented with fermented rooibos, ‘green’ rooibos, Chinese green tea, rooibos supplement, green tea supplement or water for 10 ... motility were significantly higher for rats consuming fermented rooibos and ‘green’ rooibos when compared with the other groups. Catalase activity ... higher in the sperm of rats consuming fermented rooibos, ‘green’ rooibos and both the rooibos and green ...
Tópico(s): Selenium in Biological Systems
2012 - Wiley | Phytotherapy Research
B. D. Canda, Oluwafemi Omoniyi Oguntibeju, Jeanine L. Marnewick,
This study investigated the antioxidative effect of rooibos herbal tea and a rooibos-derived commercial supplement on tert-butyl hydroperoxide- (t-BHP-) induced oxidative stress in the liver. Forty male Wistar rats consumed fermented rooibos, unfermented rooibos, a rooibos-derived commercial supplement, or water for 10 weeks, ... gain of the respective animals. Rats consuming the rooibos-derived commercial supplement had the highest (P < 0. ... mg/day) followed by rats consuming the unfermented rooibos (93.4 mg/day) and fermented rooibos (73. ...
Tópico(s): Biochemical effects in animals
2014 - Hindawi Publishing Corporation | Oxidative Medicine and Cellular Longevity
Amirhossein Bahramisharif, Sandra C. Lamprecht, Christoffel F. J. Spies, W. J. Botha, F. J. Calitz, A. McLeod,
Rooibos (Aspalathus linearis) is an important indigenous crop in South Africa. Oomycetes are a common problem in rooibos nurseries, causing serious losses, but limited information is ... morphological analyses of 117 oomycete isolates from 19 rooibos nurseries and 33 isolates from 11 native rooibos sites revealed the presence of several Pythium spp., ... the species were identified in nurseries and native rooibos, with Pythium irregulare being the most common species ... which only two have previously been reported. On rooibos, all species except P. acanthicum and the previously ...
Tópico(s): Plant Pathogens and Fungal Diseases
2013 - American Phytopathological Society | Plant Disease
Chinyerum S. Opuwari, Thomas K. Monsees,
Aspalathus linearis (rooibos tea) may improve sperm function owing to its antioxidant properties. To test this hypothesis, male rats were given 2% or 5% rooibos tea for 52 days. No significant alterations were ... of caput epididymides showed a significant increase. Unfermented rooibos significantly enhanced sperm concentration, viability and motility. Fermented rooibos also significantly improved sperm vitality (P < 0.01), ... treated rats, consistent with significant higher kidney weights. Rooibos significantly reduced alanine transaminase level, while 2% fermented ...
Tópico(s): Seaweed-derived Bioactive Compounds
2013 - Wiley | Andrologia
... has arisen about equity and justice in the rooibos industry, centred both on the biological resource and ... to a reassessment of the conditions under which rooibos is traded. Claiming to be the primary holders of traditional knowledge relating to rooibos, indigenous San and Khoi have also launched demands—to date unmet—for a stake in rooibos benefits. Meanwhile, small-scale coloured rooibos producers, despite their involvement in fair trade, remain ... All remain embedded in a political history of rooibos that is characterized by dispossession and adversity, having ...
Tópico(s): Biotechnology and Related Fields
2016 - Elsevier BV | South African Journal of Botany
M. Viljoen, Magdalena Müller, Dalene de Beer, Elizabeth Joubert,
Traditional rooibos iced teas prepared using fermented rooibos extract contain a low concentration of the unique antioxidant, aspalathin, which also has anti-diabetic properties. In order to increase the aspalathin content an array of rooibos iced tea formulations containing aspalathin-enriched green rooibos extract or the same extract solubilised in nanomicelles ... formulations were compared with those of traditional fermented rooibos iced tea. The iced tea formulations containing green rooibos extract exhibited a "plant-like" character, which was ...
Tópico(s): Biochemical Analysis and Sensing Techniques
2016 - Elsevier BV | South African Journal of Botany
B. Jolley, Marieta van der Rijst, Elizabeth Joubert, Magdalena Müller,
... provinces of South Africa for the production of rooibos, a herbal tea with a global footprint. A ... the effect of production area and year on rooibos sensory properties, as well as to ensure large variation, required for revision of the rooibos sensory wheel. The samples were analysed using descriptive ... mouthfeel attributes. The primary aroma characteristic profile of rooibos, previously described as "rooibos-woody", "fynbos-floral" and "honey" was confirmed. Other ... as those of the primary aroma profile of rooibos, these attributes, manifested in samples from both production ...
Tópico(s): Heavy Metals in Plants
2016 - Elsevier BV | South African Journal of Botany
Xiumin Chen, David D. Kitts, Zhili Ma,
... green, oolong, and black) teas and two herbal (Rooibos and Yerba mate) teas that are produce and ... population worldwide. We also studied the impact of Rooibos tea on the production of inflammatory mediators, including ... antioxidant activity among these six teas examined, whereas, Rooibos tea has the lowest TPC, antioxidant and anti- ... phytochemical composition. Among the six teas examined, only Rooibos tea was found to induce NO in unstimulated Raw 264.7 cells. Under basal conditions, Rooibos tea induced interleukin (IL)-1α (IL-1α), IL- ...
Tópico(s): Flavonoids in Medical Research
2017 - Food Science Publisher | Functional Foods in Health and Disease
Hannelise Piek, Irma Venter, Fanie Rautenbach, Jeanine L. Marnewick,
Background: Rooibos types and forms and how prepared and flavoured influence the total polyphenol content and total antioxidant capacity (TAC). Aim: To denote an optimal rooibos cup as having the highest total polyphenol content ... Phase 1), and determine the demographic, lifestyle and rooibos consumption characteristics of adult rooibos consumers, and the association of these characteristics with ... ferric-reducing antioxidant power assay) of the prepared rooibos samples. For Phase 2, a developed, pilot tested ...
Tópico(s): Antioxidant Activity and Oxidative Stress
2019 - AOSIS | Health SA Gesondheid
... the use of natural antioxidants in sources like rooibos (Aspalathus linearis) tea. Recent studies have demonstrated that rooibos (either its isolated components or the crude rooibos extract/tea) confers cardioprotection in diabetic cardiomyopathy and ... addition, a clinical study has shown that regular rooibos consumption reduces the risk for cardiovascular disease in adults. However, rooibos is currently not considered an official treatment against cardiac disease, mainly because the underlying mechanisms for rooibos-induced cardioprotection are not fully elucidated. Physiological actions ...
Tópico(s): Heart Rate Variability and Autonomic Control
2019 - Academy of Science of South Africa | South African Journal of Science
Manzimase Sishi, Magdalena Müller, Dalene de Beer, Marieta van der Rijst, Elizabeth Joubert,
Rooibos represents 10% of the global herbal tea market. Shrinking production areas as a result of climate ... present study aimed to determine the potential of rooibos tea processing waste (i.e. fine dust and ... Hot water extraction of soluble solids (SS) from rooibos dust was optimised and extracts from different production ... less intense than that of infusions of commercial rooibos (n = 20) when diluted to the same SS ... lower (P < 0.05) than that of commercial rooibos. An atypical and negative aroma attribute, 'planky/pencil ...
Tópico(s): Tea Polyphenols and Effects
2019 - Wiley | Journal of the Science of Food and Agriculture
Ishaku Leo Elisha, Alvaro Viljoen,
... indigenous plants, Aspalathus linearis, known in commerce as rooibos tea. Despite the growing global market, and acceptance ... refreshing and health-promoting tea, scientific publications on rooibos, have not been subjected to scientometric analyses. A ... considered using VOSviewer. The global publication contribution on rooibos tea shows an average annual growth rate of ... include oxidative stress and inflammatory process mitigation using rooibos tea extracts, agronomy and fair trade in the rooibos tea industry, metabolic syndrome research, antioxidant activity, toxicity, ...
Tópico(s): Global Healthcare and Medical Tourism
2020 - Elsevier BV | South African Journal of Botany
Víctor López, Guillermo Cásedas, Kelly Petersen-Ross, Yigael S. L. Powrie, Carine Smith,
South African rooibos (Aspalathus linearis) tea is globally consumed for its health benefits and caffeine free nature, but no information is available on the neuroprotective capacity of (unfermented) green rooibos. Our aim was to investigate the cytoprotective activity of green rooibos in neuronal cells, including probing antioxidant and enzyme ... We also investigated the anxiolytic potential of green rooibos using zebrafish larval models. Green rooibos extract (Green oxithin™) was assessed for its neuroprotective ...
Tópico(s): Natural product bioactivities and synthesis
2021 - Royal Society of Chemistry | Food & Function
Lesha Pretorius, Anton D. van Staden, Tracy Kellermann, N. Henning, Carine Smith,
Aspalathus linearis (Burm.f.) R. Dahlgren (rooibos) tea is anecdotally renowned for its calming effect in the context of gastrointestinal discomfort, but little scientific support is available to elucidate ... interest. Given the known high polyphenol content of rooibos, rooibos tea may potentially exert a prebiotic effect in ... determine the prebiotic or health-modulating potential of rooibos tea in terms of its effect on gut ... composition, as well as to determine how differential rooibos processing alters this activity.Three rooibos preparations (green ...
Tópico(s): Gut microbiota and health
2022 - Elsevier BV | Journal of Ethnopharmacology
Jeanine L. Marnewick, Fanie Rautenbach, Irma Venter, Henry Neethling, Dee Blackhurst, Petro Wolmarans, Muiruri Macharia,
... traditionally used as a "tea" referred to as rooibos or redbush. This plant has been listed as ... present study was to investigate the effect of rooibos on biochemical and oxidative stress parameters in adults ... 40 volunteers consumed six cups of fermented/traditional rooibos daily for 6 weeks, followed by a control ... but plasma total polyphenol levels increased significantly after rooibos consumption compared with the control levels (from 79. ... plasma markers of lipid peroxidation were found after rooibos consumption, as reported by levels of CDs (167. ...
Tópico(s): Phytochemicals and Antioxidant Activities
2010 - Elsevier BV | Journal of Ethnopharmacology
Micheline Sanderson, Sithandiwe E. Mazibuko, Elizabeth Joubert, Dalene de Beer, Rabia Johnson, Carmen Pheiffer, Johan Louw, Christo J. F. Muller,
Rooibos (Aspalathus linearis) contains a rich complement of polyphenols, including flavonoids, considered to be largely responsible for ... study was to examine the effect of fermented rooibos hot water soluble solids on in vitro adipocyte ... were obtained when preparing an infusion of fermented rooibos at "cup-of-tea" strength. The major phenolic ... μg/ml and 100 μg/ml of the rooibos soluble solids inhibited intracellular lipid accumulation by 22% ( ... release into the culture medium was observed after rooibos treatment. None of the concentrations of rooibos hot ...
Tópico(s): Adipokines, Inflammation, and Metabolic Diseases
2013 - Elsevier BV | Phytomedicine
W.C.A. Gelderblom, Elizabeth Joubert, Kareemah Gamieldien, Linda Sissing, Christiaan J. Malherbe, Gert S. Maritz,
... were conducted using hot water aqueous extracts of rooibos (Aspalathus linearis), honeybush (Cyclopia intermedia), and cancer bush ( ... Aqueous extracts of both "fermented" and "unfermented" (green) rooibos and honeybush were included, while extracts of green ... benchmarks. A polyphenol-enriched methanol extract of unfermented rooibos (RgM) was included to further elucidate the possible role of rooibos polyphenols. Studies were performed in the presence of ... induced mutagenesis followed by the aqueous extracts of rooibos ≥ green tea ≥ honeybush ≥ cancer bush. Black tea, green ...
Tópico(s): Phytochemicals and Antioxidant Activities
2016 - Elsevier BV | South African Journal of Botany
Nadine A. Pringle, Trevor Koekemoer, A. Holzer, Carly Young, Luanne Venables, Maryna van de Venter,
... opportunities for therapeutic intervention to improve wound repair. Rooibos, Aspalathus linearis, is a popular ingredient in skin ... the effects of fermented and aspalathin-enriched green rooibos in various in vitro models representative of dermal ... Treatment of RAW 264.7 macrophages with fermented rooibos resulted in increased nitric oxide production as well ... oxygen species in wound healing, the effects of rooibos on oxidative stress and cell death in human dermal fibroblasts was evaluated. Both fermented and green rooibos decreased cellular reactive oxygen species and attenuated apoptotic/ ...
Tópico(s): Biological Stains and Phytochemicals
2018 - Thieme Medical Publishers (Germany) | Planta Medica
Rooibos (Aspalathus linearis) is a South African herbal tisane that is enjoyed throughout the world for its taste and emerging health benefits. Rooibos possesses a unique composite of phytochemicals known to ... a comprehensive bibliometric overview of the literature on Rooibos and its proposed health benefits to complement previous ... A bibliometric mapping analysis of the research on Rooibos was carried out, using data from the titles, ... of this tisane.The literature mainly focused on Rooibos bioactive effects against cancer, inflammation, and oxidative stress. ...
Tópico(s): Phytochemicals and Antioxidant Activities
2019 - Elsevier BV | Journal of Ethnopharmacology
Ingrid Webster, Emiliana Gomes Imperial, C. Westcott, Hans Strijdom,
... of cardiovascular disease. The beneficial cardiovascular effects of rooibos are well described; however, it is unknown whether rooibos ameliorates harmful ART-induced cardiovascular side effects. We investigated the cardiometabolic effects of rooibos co-treatment in rats receiving ART (efavirenz, emtricitabine, tenofovir) for nine weeks. Rooibos treatment reduced total cholesterol levels; however, triglyceride, phospholipid ... thiobarbituric acidreactive substance levels were unaffected by ART, rooibos or combination treatment. In isolated hearts exposed to ...
Tópico(s): HIV/AIDS drug development and treatment
2019 - Clinics Cardive Publishing | Cardiovascular journal of South Africa/Cardiovascular journal of Southern Africa
Rukayat D Elegbede, Margaret O. Ilomuanya, Abimbola Sowemimo, Amarachi Nneji, Elizabeth Joubert, Dalene de Beer, Trevor Koekemoer, Maryna van de Venter,
Aspalathus linearis (rooibos) has been reported to have a high content of phenolic compounds which elicit antioxidant and anti-inflammatory activity ... evaluated the effects of “fermented” (oxidised) and green rooibos extracts embedded in gentamicin loaded acrylate copolymer based ... compounds and a phenolic precursor present in the rooibos extracts were quantified by HPLC. Acute toxicity of ... compared to the control. Hydrogels loaded with fermented rooibos extract performed better than those loaded with green ...
Tópico(s): Plant-Derived Bioactive Compounds
2020 - Elsevier BV | Wound Medicine
Jacobus FN Smith, Ailsa G. Hardie,
Despite the global importance of rooibos tea (Aspalathus linearis (Burm.f.) R.Dahlgren) as a health-promoting crop, foliar nutrient sufficiency ranges have not yet been determined for commercially cultivated rooibos. Determination of these ranges is critical for assessing ... aim of this study was to determine optimal rooibos foliar macro- and micronutrient ranges using the boundary-line approach (BLA) method across the main rooibos production areas in South Africa. Foliar nutrient and yield data were collected from 120 different commercial rooibos plantations in the six main rooibos producing areas ...
Tópico(s): Leaf Properties and Growth Measurement
2022 - Taylor & Francis | South African Journal of Plant and Soil