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Dissertations / Theses on the topic 'Sabdariffa'

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Published: 4 June 2021
Last updated: 11 March 2023

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1

Paul, Hélène. ""Hibiscus sabdariffa" L." Paris 5, 1995. http://www.theses.fr/1995PA05P111.

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2

Sie, Raoul Sylvère. "Caractérisation agro-morphophysiologique et micropropagation de l’oseille de Guinée (Hibiscus Sabdariffa L. )." Brest, 2010. http://www.theses.fr/2010BRES2014.

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L’oseille de Guinée (Hibiscus sabdariffa L. ) est une plante importante en Afrique de l’Ouest pour son utilisation au niveau nutritionnel, industriel et médical. Cependant, hormis quelques études de phytotechnie, peu de travaux concernent la sélection de cette plante. En outre, aucune étude de régénération par embryogenèse somatique n’est disponible. L’objectif principal de ce travail est de caractériser la collection d’oseille de Guinée en vue à long terme, de mettre en oeuvre un programme de sélection de génotypes vigoureux, haut producteurs et résistants à certaines maladies. Par ailleurs,
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3

Sindi, Hebah Abbas. "Bioactivity of anthocyanins from Hibiscus sabdariffa." Thesis, University of Leeds, 2013. http://etheses.whiterose.ac.uk/5910/.

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A systematic study on extraction of Hibiscus sabdariffa was carried out for the first time using different solvents (water, methanol, ethyl acetate and hexane) in the presence and absence of formic acid, using different extraction times and temperatures. The extracts were analysed for total phenol content, antioxidant capacity using DPPH, FRAP and TEAC assays, and total monomeric anthocyanin content. In addition, specific anthocyanins were determined using HPLC and LC-MS. The results showed the highest antioxidant capacities were obtained by extracting using water, with or without formic acid,
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4

Sinela, André Mundombe. "Etude des mécanismes réactionnels et des cinétiques de dégradation des anthocyanes dans un extrait d’Hibiscus sabdariffa L." Thesis, Montpellier, SupAgro, 2016. http://www.theses.fr/2016NSAM0036/document.

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Les calices séchés d’Hibiscus sabdariffa L. sont traditionnellement utilisés en Afrique pour la production de boissons par macération dans l’eau. Cette matière première, riche en anthocyanes, est aussi connue dans l’industrie agro-alimentaire comme source de colorants naturels. Toutefois, la couleur des extraits obtenus évoluent rapidement au cours du temps ce qui nuit au développement de ces produits. Afin de mieux caractériser et de mieux comprendre l’instabilité de la couleur, ce travail propose une étude cinétique et mécanistique de la dégradation des anthocyanes durant la conservation d’u
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5

MALACRIDA, ALESSIO. "EVALUATION OF ANTITUMORAL EFFECTS OF HIBISCUS SABDARIFFA ON MULTIPLE MYELOMA CELLS." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2017. http://hdl.handle.net/10281/158152.

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Hibiscus Sabdariffa (HS) is a plant of the Malvacee family commonly cultured in tropical and subtropical countries. It is mainly known as the main ingredient for the preparation of cold drink called Karkadè. Calices and leaves of HS plant are also used in folk medicine thanks to their antioxidant and anti-inflammatory properties. In recent years, HS has also gained great interest as a possible antitumoral agent. In the present PhD project, we evaluated the antitumoral effects of HS against multiple mye-loma cells in vitro. Multiple myeloma is the most frequent hematological malignancy world-w
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6

Omoarukhe, Esereosa D. "Natural processing for beverages : from a Hibiscus sabdariffa (Roselle) beverage perspective." Thesis, University of Reading, 2017. http://centaur.reading.ac.uk/78761/.

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The beverage industry is tending towards the production of healthier, low calorie beverages containing only naturally derived ingredients. The use of these ingredients presents an opportunity for a rise in functional beverages but could also present beverage quality challenges. Using Hibiscus sabdariffa (Roselle) extracts, known for its functional properties, this research investigates some quality considerations that may result due to relevant changes to the production, storage and consumption of the beverage to suit clean label considerations. These issues relate to processing, calories redu
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7

Cissé, Mady. "Couplage de procédés membranaires pour la production d’extraits anthocyaniques : application à Hibiscus sabdariffa." Thesis, Montpellier, SupAgro, 2010. http://www.theses.fr/2010NSAM0035/document.

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Hibiscus sabdariffa L. est une plante vivace herbacée localisée dans les zones tropicales et subtropicales des deux hémisphères. Au Sénégal, où elle a été introduite au 19ème siècle, H. sabdariffa, encore appelé bissap ou roselle, est cultivé sur l'ensemble du territoire et exploité principalement pour ses calices. Une boisson désaltérante est traditionnellement élaborée à partir des calices séchés par extraction à l'eau. La caractérisation physico-chimique et biochimique des calices nous a tout d'abord permis de mieux évaluer le potentiel de ce produit. Ainsi, les calices contiennent entre 76
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8

Grajeda-Iglesias, Claudia. "Valorisation d’extraits végétaux par la synthèse et caractérisation de composés phénoliques lipophilisés." Thesis, Montpellier, SupAgro, 2016. http://www.theses.fr/2016NSAM0005.

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Les composés phénoliques sont des métabolites secondaires chez les végétaux, qui possèdent un large éventail de propriétés biologiques et fonctionnelles, par exemple antioxydantes, antimicrobiennes. Comme ils sont très répandus dans le règne végétal, les sous-produits issus de la transformation végétale représentent une source intéressante et peu coûteuse des polyphénols qui pourraient être utilisés comme additifs naturels, inoffensifs et multifonctionnels, avec une valeur de marché ajoutée. Toutefois, leur polarité limite leur utilisation dans des systèmes émulsionnés complexes, tels que ceux
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9

Sobantu, Mandisa Pamela. "The antioxidative and cytotoxic effects of hibiscus sabdariffa on mcf7 and mcf12a breast cell lines." Thesis, Cape Peninsula University of Technology, 2015. http://hdl.handle.net/20.500.11838/2235.

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Thesis (MTech (Biomedical Technology))--Cape Peninsula University of Technology, 2015.<br>Cancer is the leading cause of death in both developed and developing countries. In particular, breast cancer is regarded as the most common neoplastic disease in females and accounts for the high mortality rates in women. Increased mortality rates could be attributed to ineffective current cancer treatment modalities that have been implicated to cause multidrug resistance, high toxicity and induction of several side effects. In addition, oxidative stress appears to play a role in the development of breas
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10

Caramez, Rosa Roseméri Beiro. "Caracterização físico-química e estudo de estabilidade das antocianinas do cálice de Hibiscus sabdariffa L. /." Florianópolis, SC, 1999. http://repositorio.ufsc.br/xmlui/handle/123456789/80593.

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Dissertação (Mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias.<br>Made available in DSpace on 2012-10-18T16:32:50Z (GMT). No. of bitstreams: 0<br>Este trabalho foi realizado com o objetivo de pesquisar a estabilidade das antocianinas de Hibiscus sabdariffa L. frente a determinadas condições e avaliação de sua composição físico-química para um possível aproveitamento desta malvácea como fonte de nutrientes e corante para a indústria de alimentos. Os resultados da composição físico-química demonstraram que vinagreira (Hibiscus sabdariffa L.), pode ser utilizada com
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11

Endrias, Abraham. "Bio-raffinage de plantes aromatiques et médicinales appliqué à l'Hibiscus sabdariffa L. et à l'Artemisia annua." Phd thesis, Toulouse, INPT, 2006. http://oatao.univ-toulouse.fr/7484/1/endrias.pdf.

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L'objectif de l'étude était d'évaluer les potentialités aromatiques et médicinales de deux plantes (Hibiscus sabdariffa et Artemisia annua). Les performances et rendement de plusieurs méthodes d'extraction et de solvants sur des calices et des graines d'hibiscus, issus de trois pays (Vietnam, Sénégal et Mexique) ont été comparés. Les profils en composés volatifs diffèrent selon les extraits. La teneur en acide gras, stérols et tocophérols des huiles des graines d'hibiscus est comparable à celle de l'huile de coton et de soja. Une seconde partie du projet portant sur l'Artemisia du Cambodge et
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12

Menezes, J?nior Jos? Brand?o de. "Desenvolvimento de gel?ia e doce de corte a partir do processamento das folhas de vinagreira (Hibiscus Sabdariffa L.)." Universidade Federal Rural do Rio de Janeiro, 2012. https://tede.ufrrj.br/jspui/handle/jspui/1512.

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Submitted by Sandra Pereira (srpereira@ufrrj.br) on 2017-04-10T13:41:32Z No. of bitstreams: 1 2012 - Jos? Brand?o de Menezes Junior.pdf: 1334630 bytes, checksum: 0e3130fc9cf04d6dac8ef9b924232b57 (MD5)<br>Made available in DSpace on 2017-04-10T13:41:32Z (GMT). No. of bitstreams: 1 2012 - Jos? Brand?o de Menezes Junior.pdf: 1334630 bytes, checksum: 0e3130fc9cf04d6dac8ef9b924232b57 (MD5) Previous issue date: 2012-07-31<br>Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES<br>Vegetable of African origin, the hibiscus (Hibiscus sabdariffa. L) is fully adapted to the climatic con
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13

Elashi, Balsam. "The antimicrobial and antifungal efficacy of indigenous plant extracts against streptococcus mutans, Escherichia colia and Candida albicans." University of the Western Cape, 2015. http://hdl.handle.net/11394/4246.

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Magister Scientiae Dentium - MSc(Dent)<br>The antimicrobial and antifungal efficacy of indigenous plant extracts against Streptococcus mutans , Escherichia coli and Candida albicans .Aim: To determine the antimicrobial and antifungal efficacy of indigenous plant extracts, Tamarindus Indica (T. ndica), Hibiscus sabdariffa (H. sabdaraffi), Adansonia digitata (A.digitata) and Moringa oleifera (M. oleifera) against Streptococcus mutans ( S. mutans ), Escherichia coli ( E. coli ) and Candida albicans (C. albicans) objectives:The objectives of this study were to: 1.Measure the zones of growt
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14

Maciel, Mônica Jachetti. "Avaliação do extrato alcoólico de hibisco (hibiscus sabdariffa l.) como fator de proteção antibacteriana e antioxidante em alimentos." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2011. http://hdl.handle.net/10183/29544.

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O hibisco (Hibiscus sabdariffa L.) além de possuir propriedades antioxidantes e antimicrobianas, é utilizado como planta medicinal e alimento funcional nos países tropicais. Através de Testes de Diluição em Sistema de Tubos Múltiplos determinou-se a Intensidade de Atividade de Inibição Bacteriana (IINIB/Bacteriostasia) e a Intensidade de Atividade de Inativação Bacteriana (IINAB/Bactericidia) de extrato alcoólico de dois acessos de hibisco, a saber: Palmares do Sul/RS e Porto Alegre/RS sobre inóculos padronizados de Enterococcus faecalis (ATCC 19433), Escherichia coli (ATCC 11229), Salmonella
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15

Ifie, Idolo. "The effect of processing conditions on the bioactive compounds, aroma profile and sensory attributes of wine from Hibiscus sabdariffa." Thesis, University of Leeds, 2016. http://etheses.whiterose.ac.uk/15674/.

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Hibiscus sabdariffa (H. sabdariffa) is a rich source of bioactive phytochemicals with potential health benefits. Based on its reported use in folk medicine for the treatment of hypertension and recently type 2 diabetes, the plant has gained considerable commercial importance as a functional food. Three varieties of H. sabdariffa were analyzed for their phytochemical content and inhibitory potential on carbohydrate-digesting enzymes as a basis for selecting a variety for wine production. The dark red variety was chosen as it was highest in phenolic content and partially inhibited α–glucosidase
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16

ARIZMENDI, COTERO DANIEL 370573, and COTERO DANIEL ARIZMENDI. "Elaboración de polímeros naturales injertados con compuestos antioxidantes de Jamaica (Hibiscus Sabdariffa L) y evaluación de sus propiedades funcionales." Tesis de doctorado, Universidad Autónoma del Estado de México, 2016. http://hdl.handle.net/20.500.11799/65806.

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Con el fin de generar una nueva fibra dietética antioxidante y prebiótica, el ácido gálico (AG) se injertó en inulina nativa por el método de radicales libres generados mediante el par Redox peróxido de hidrógeno/ácido ascórbico (H2O2/AA). A través de Resonancia Paramagnética Electrónica (EPR), se evaluaron diversas relaciones molares H2O2/AA para determinar el efecto de la oxidación de la inulina y medir la eficiencia en el injerto Inulina- ácido gálico (IGA). El injerto se confirmó mediante UV, espectroscopia de infrarrojo (FT-IR) y difracción de rayos X en polvos. Además, la actividad antio
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17

Piovesana, Alessandra. "Extração, identificação, quantificação e microencapsulamento por atomização e liofilização de compostos bioativos dos cálices de hibisco (hibiscus sabdariffa l.)." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2016. http://hdl.handle.net/10183/151290.

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O interesse pela extração dos compostos bioativos, a partir de fontes naturais, para o emprego na produção de alimentos funcionais tem aumentado, devido, principalmente, à crescente demanda por parte dos consumidores, por produtos mais saudáveis e que possam trazer benefícios à saúde. Dentre as fontes naturais de compostos bioativos, destaca-se o hibisco (Hibiscus sabdariffa L.), que é rico em antocianinas, flavonoides, ácidos fenólicos, carotenoides, dentre outros. Entretanto, quando os compostos bioativos são separados de suas matrizes, estes se tornam altamente instáveis frente a diversos f
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18

Cassol, Liliana. "Extração de compostos bioativos do hibisco (Hibiscus sabdariffa L.) por micro-ondas e seu encapsulamento por atomização e liofilização." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2018. http://hdl.handle.net/10183/179787.

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Os cálices do hibisco possuem uma grande quantidade de compostos bioativos responsáveis pela sua atividade antioxidante. O presente trabalho teve como objetivos a obtenção de extratos contendo esses compostos bioativos em solução aquosa com 2 % de ácido cítrico por extração assistida por micro-ondas (EAM) e o encapsulamento desses extratos por atomização e liofilização utilizando polidextrose (PD), proteína isolada do soro de leite (WPI) e a mistura destes na concentração de 10 %. Previamente foram estudados três métodos de extração, o primeiro usando somente EAM a 200, 300 e 700 W de potência
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19

Povolo, Chiara. "Extraction and characterization of chemicals from vegetal matrices and assessment of their properties for nutraceutical and cosmetic applications." Doctoral thesis, Università degli studi di Padova, 2018. http://hdl.handle.net/11577/3425744.

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Present days lifestyles increase the number of free radicals in our body and predispose people to oxidative stress, responsible for the development of several diseases as well as aging. The need for inhibitors of oxidative processes has become essential. Plant-derived antioxidant compounds are preferred. Hibiscus sabdariffa L. belongs to the Malvaceae family. Its calyces contain anthocyanins, responsible for the antioxidant activity reported for the extracts. Moringa oleifera Lam. belongs to the Moringaceae family. Its antioxidant properties are mainly attributed to its phenolic compounds and,
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20

REZENDE, Ana L?gia Panain de Souza. "Caracteriza??o e estudo da vida ?til de vinagreira cultivada em Serop?dica-RJ." Universidade Federal Rural do Rio de Janeiro, 2016. https://tede.ufrrj.br/jspui/handle/jspui/1991.

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Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-08-23T18:01:56Z No. of bitstreams: 1 2016 - Ana L?gia Panain de Souza Rezende.pdf: 2352671 bytes, checksum: 2325a74ffef5675199939b7af3f37d60 (MD5)<br>Made available in DSpace on 2017-08-23T18:01:56Z (GMT). No. of bitstreams: 1 2016 - Ana L?gia Panain de Souza Rezende.pdf: 2352671 bytes, checksum: 2325a74ffef5675199939b7af3f37d60 (MD5) Previous issue date: 2016-07-26<br>CAPES<br>Vegetables are a source of nutrients essential to human health and have low caloric value. Among these, non-conventional vegetables also have other advantag
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Adje, Félix Anoh. "Production par procédés membranaires couplés d'extraits polyphénoliques de Carapa procera, Delonix regia et Hibiscus sabdariffa. Détermination des structures moléculaires et des activités antioxydantes." Aix-Marseille 3, 2009. http://www.theses.fr/2009AIX30054.

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L’extraction des polyphénols de feuilles de Carapa procera, de fleurs de Delonix regia et de calices d Hibiscus sabdariffa est optimisée à l'échelle du laboratoire pour obtenir des extraits rouge riches en antioxydants. Les anthocyanes, les flavonols et les acides phénols de ces 3 plantes endémiques de Côte d'Ivoire ont été caractérisés par CL-SM et RMN pour la première fois dans les 2 premières plantes et confirmés dans la troisième. La macération 12-16h dans l' eau d échantillons séchés localement, la macération 1h avec assistance par ultrasons, la microfiltration et la concentration des ext
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22

SANTANA, LEGORRETA SERGIO 443157, and LEGORRETA SERGIO SANTANA. "Diseño de partículas a base de inulina de Dalia (Dahlia variabilis Cav.) para la liberación controlada de un extracto de Jamaica (Hibiscus sabdariffa L.)." Tesis de maestría, Universidad Autónoma del Estado de México, 2017. http://hdl.handle.net/20.500.11799/67793.

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0<br>La dalia (Dahlia coccinea Cav.) es una planta que ha sido cultivada y mejorada genéticamente con fines ornamentales; no obstante, su sistema radicular almacena carbohidratos de reserva bajo la forma de inulina y otros fructanos. La inulina forma parte de la fibra dietética de diversos vegetales y es considerada como un compuesto prebiótico. Este polisacárido se extrae principalmente de la achicoria y la alcachofa mediante métodos de separación muy variados, siendo la raíz de la dalia una opción interesante de explotación industrial. El propósito de este estudio fue proponer un método simp
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23

CALDARA, CRISTINA. "Effetto di diverse sostanze sul differenziamento mesengenico di cellule staminali mesenchimali umane." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2013. http://hdl.handle.net/10281/49729.

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RIASSUNTO E SCOPO DEL LAVORO Esiste una stretta correlazione tra obesità e osteoporosi: nell'obesità si riscontra una maggiore fragilità ossea ed un ridotto assorbimento di calcio a livello intestinale, mentre l'osteoporosi è spesso accompagnata da un aumento dell'adipogenesi midollare. In questi ultimi anni un'area della ricerca scientifica si è concentrata sullo studio di nuovi farmaci/sostanze in grado di agire sull'adipogenesi o sull'osteoblastogenesi in quanto è fondamentale trovare nuove terapie che prevengano tali patologie. Conoscendo la stretta relazione tra il differenziamento adi
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Farooqi, A. A. "Genetical studies in Roselle (Hibiscus sabdariffa L. var. sabdariffa)." Thesis, 1993. http://hdl.handle.net/2009/1316.

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CENG, YONG-AN, and 曾永安. "Studies on anthocyanins of roselle (Hibiscus sabdariffa L.)." Thesis, 1991. http://ndltd.ncl.edu.tw/handle/08636060472535074270.

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Chen, Hui-Qing, and 陳惠卿. "The study of Hibiscus sabdariffa Extract Microcapsule by Chitosan." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/88046219614393312420.

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碩士<br>靜宜大學<br>化粧品科學系<br>104<br>Hibiscus sabdariffa also known as Roselle, it is often used as a plant health. Roselle at different pH environment due to the contents of the different enzymes and showing a different color. Therefore, this study will be of chitosan as the shell material, and Hibiscus sabdariffa extract as a core material, made into chitosan microcapsules. The Hibiscus sabdariffa extract was covered, and may be used in the skin care and cosmetics products. It has a natural pigment and sustained effect. In this study, morphological appearance Roselle microcapsules, particle size,
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Huei-Lin and 陳惠玲. "Protective effect of Hibiscus sabdariffa extract against acetaminophen induced liver injury." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/64230534615801103589.

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碩士<br>中山醫學大學<br>生化暨生物科技研究所<br>95<br>Acetaminophen (AAP) possessed analgesic and antipyretic properties; but it could induce hepatic necrosis in centrilobular cell. The major cause of hepatic damage was contributed by the reactive intermediate N-acetyl-p-benzoquinone imine (NAPQI). NAPQI accumulation was due to protein arylation and severe oxidative stress to cause liver injury. It was demonstrated that Hibisus Sabdariffa (HS) potentiated antioxidative effect in previous studies. In this study, we investigated HS extracts against AAP induced liver injury in BABL/c mice. In vivo, BABL/c mice
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Jhe-Hong and 簡哲鴻. "The study of Hibiscus Sabdariffa Linnaeus Extracts on inhibiting Diabetic Ophthalmopathy." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/63192452031328979681.

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碩士<br>中山醫學大學<br>生化暨生物科技研究所<br>96<br>Diabetic ophthalmopathy is the leading cause of acquired blindness in the world. Diabetes sustained hyperglycemia circumstances, produced abnormal metabolism products to influence eye normal function, besides decreased antioxidant system, and furthermore produced free radical to damage eye. It was demonstrated that Hibisus Sabdariffa potentiated antioxidative effect in previous studies. In this study, we further examined the effect of HSE or HPE on anti-ophthalmopathy. In Sprague-Dawley (SD) Rat experiment, after diabetes induction completed, HSE (100,200
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Faria, Maria João Nepomuceno Pereira Monteiro Palermo de. "Sensory properties and consumer acceptance of novel hibiscus (hibiscus sabdariffa) beverages." Doctoral thesis, 2017. http://hdl.handle.net/10400.14/24177.

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As bebidas à base de extratos de hibisco são ricas em ácidos orgânicos, compostos fenólicos e polissacáridos, substâncias com potenciais benefícios para a saúde, sendo tradicionalmente consumidas na Africa Ocidental, na Ásia e na parte sul da América do Norte. A sua divulgação na Europa e dos Estados Unidos tem sido lenta e dirigida sobretudo a nichos de mercado, no entanto, o crescente interesse dos consumidores europeus e norte-americanos em bebidas com ingredientes únicos ou exóticos, com potenciais benefícios para a saúde, criaram recentemente novas oportunidades de mercado para bebidas de
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Sipahli, Shivon. "Identification, characterization and application of a natural food colourant from Hibiscus sabdariffa." Thesis, 2017. http://hdl.handle.net/10321/2620.

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Submitted in complete fulfilment for the Degree of Master in Food Science and Technology, Durban University of Technology, 2017.<br>Hibiscus sabdariffa is an under-utilised plant that has been reported to have great potential in the pharmaceutical and nutraceutical industries. The vibrant red pigment indicates a source of anthocyanins that could be produced into a food colourant with additional nutritional benefits however stability is a hindering factor. The crude anthocyanins were extracted from dried calyces by means of four different acidified ethanol and methanol solvent systems to determ
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Lin, Jing-Wei, and 林菁薇. "The study of inhibitory effect of Hibiscus sabdariffa leaf extracts on melanogenesis." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/75488353217047069288.

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碩士<br>中山醫學大學<br>營養學研究所<br>101<br>Melanogenesis has many important physiological functions, including photo-protection of human skin from UV irradiation. Melanin synthesis is stimulated by α-melanocyte stimulating hormone (α-MSH) and cyclic AMP (cAMP) elevating agents. However, abnormal melanogenesis causes hyperpigmentation in the skin, which results in serious aesthetic issues and increases the risk of skin cancer. Previous studies have indicated Hibiscus sabdariffa leaf extract (HLE) has antioxidant and anticancer activities. Therefore, in this study we examined the effect of HLE on melanoge
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Shu-Hui and 楊淑慧. "Study of Hibiscus Sabdariffa Linnaeus polyphenols and anthocyanins extracts on anti-inflammation." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/24211729240918537352.

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碩士<br>中山醫學大學<br>生化暨生物科技研究所<br>94<br>In Taiwan, Hibiscus Sabdariffa Linnaeus (HS), a well-known beverage, was demonstrated to represent antioxidant effect in previous studies. To further exploit the extracts, polyphenols and anthrocynins from HS (HPE and HA), we investigated the anti-inflammatory of effect of target sample in RAW264.7 cell on inflammatory mediators secretions (Nitrite and PGE2). Sequentially, animal model study was also preformed to confirm the anti-inflammatory effect of HPE and HA on lipopolysaccharide (LPS)-induced acute hepatic inflammation. The results showed that HPE and
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Zhong, Guan-Wei, and 鍾冠緯. "Biological Activities of Antrodia cinnamomea and Hibiscus sabdariffa on Human Skin Cells." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/83p573.

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碩士<br>國立屏東科技大學<br>生物科技系所<br>105<br>In this study, we evaluated the short-term cytotoxicity, intracellular reactive oxygen scavenging capacity, wound repairing, tyrosinase-induced melanogenesis and scavenging free radical scavenging ability of the human skin fibroblasts CCD-966SK which treated with Antrodia cinnamomea sample A (ACA), Antrodia cinnamomea sample B (ACB) and extraction of Hibiscus sabdariffa (EHS). The results of DPPH free radical scavenging assay, The clearance rate of EHS (1000 g/ml), ACB (5000 g/ml) and ACA (10 g/ml) were 80%, 75% and 23% respectively. For MTT assay, the sur
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Lin, Weifan, and 林韋帆. "Analysis Of Polyphenols In Hibiscus sabdariffa, Nelumbinis Receptaculum And Graptopelaum Paraguayense By HPLC." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/yvmq5q.

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碩士<br>中華醫事科技大學<br>醫學檢驗生物技術系碩士班<br>100<br>Phenolic compounds are the popular studies in the present day , cause of antioxidants. In this day, many people are using phenolic compounds to prevent disease from Plant extract. More and more people eat plant extract products , because it is not only can antiseptic or anti-virus but also inhibit LDL oxidation and prevention cardiovascular disease. High performance liquid chromatography with UV separation of these phenolic compounds are possible on C-18 column, using 0.1% formic acid and acetonitrile with 0.1% formic acid as mobile phase. Flow-rate, de
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Lu, Shing-quing, and 盧秀青. "Separation and Purification of Anthocyanins of Mulberry (Morus spp.) and Roselle (Hibiscus sabdariffa L.)." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/16612058191589110404.

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碩士<br>國立臺灣大學<br>化學工程學研究所<br>93<br>This work focuses on the separation, purification and identification of anthocyanins, mulberry (Morus spp.) and roselle (Hibiscus Sabdariffa L.) grown in Taiwan. Their antioxidative activities were also determined and compared. Extracts from the fruit samples were fractionated by flash chromatography using 25 and 50% methanol (with 1% acetic acid each). Qualitatative and quantitative analysis of fractionated products were carried out by using HPLC and identified the structures by employing HPLC-PDA, LC-Mass as well as NMR. The results showed that the mulberry
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Chang-Che and 陳滄澤. "Effect of Hibiscus sabdariffa extract on reduced serum lipid molecular mechanism and cardiovascular protection." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/19609668943341630477.

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博士<br>中山醫學大學<br>生化暨生物科技研究所<br>94<br>Hibiscus sabdariffa L., a local soft drink material and medicinal herb, was usually used effectively in native medicines against hypertension, pyrexia and liver disorders. Here in our research found that an extract of Hibiscus sabdariffa contains lot of polyphenolic acids, flavonoids and anthocyanins. In our report, HSE was able to prevent LDL oxidation as evidenced by its inhibition on electrophoresis, ApoB fragmentation, cholesterol degradation, and TBARS of LDL. Taken together, HSE showed a strong potency to inhibit the production of oxidized LDL induced
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Okeke, Kenneth Nkemdilim. "The efficacy of Hibiscus sabdariffa as a fibre-reinforcement material for denture base acrylic resins." Thesis, 2017. http://hdl.handle.net/10321/2923.

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Submitted in fulfillment of the requirements for the award of the degree of Master of Health Sciences: Dental Technology, Durban University of Technology, Durban, South Africa, 2017.<br>The poor mechanical properties of denture base acrylic resins can cause dentures to fracture either through impact or stress fatigue. Various metal reinforcing materials such as powders, nets, plates and wires together with synthetic fibres are therefore used to improve the strength properties of denture base acrylic resins. Despite their benefits, they are difficult to apply during fabrication, are costly, non
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Ibrahim, Kasimu Ghandi. "Effects of administration of Hibiscus sabdariffa aqueous calyx extracts on neonatal programming of metabolic dysfunction." Thesis, 2015. http://hdl.handle.net/10539/18486.

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Hibiscus sabdariffa (HS) is a plant of the Malvaceae family that has anti-obesity, antihypertensive, hypocholesterolaemic, anti-oxidant and anti-cancer properties. Dietary manipulations during the suckling period cause precocious maturation of the gastrointestinal tract (GIT). Events in early life affect the individual‘s metabolic health in later life. This study investigated the effects of early administration of the aqueous calyx extracts of HS on the growth performance, general health and the GIT of neonatal rats and whether it conferred protection or predisposition to the development of me
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Chen, Chung-mou, and 陳仲謀. "The Antioxidant Effects of Chrysanthemum morifolium, Hibiscus sabdariffa, Lycium chinese, and Ziziphus jujube Herbal Beverages." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/95596469589310122985.

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碩士<br>南華大學<br>自然醫學研究所<br>93<br>Due to the aging of population more and more serious in recent years, people pay attention to their own health earlier and earlier. The issues such as how to avoid growing old and how to strengthen the anti-oxidant are therefore in prevailing. Malignant tumour, cerebrovascular disease, cardiovascular disease, and diabetes are among ten major death causes in Taiwan. Current researches verified that these diseases not only related to aging structure, but also showed that they may all had something to do with the injury of oxidizing the human body caused by the f
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Tsai, Hsin-yu, and 蔡欣宇. "Effect of Hibiscus Sabdariffa L. extracts on antioxidative status and anti-aging in senescence accelerated mice." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/56935838187814259941.

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碩士<br>靜宜大學<br>食品營養研究所<br>98<br>Although the antioxidant and antihypertensive effects of Roselle (Hibiscus Sabdariffa L.) was confirmed, its anti-aging mechanism is still indeterminate. The purpose of this study was to investigate the effects of roselle extracts on learning and memory ability, and antioxidant status in senescence-accelerated mice (SAMP8). Three and six-month-old SAMP8 male and female mice were used in this study. SAMP8 mice were randomly divided into five groups, where each group contained 10 mice, including control group, 3.30 g/kg BW, 6.59 g/kg BW, 13.19 g/kg BW and 32.97 g/
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Jhan, Yi-Syuan, and 詹宜軒. "Evaluation of antioxidant and antibacterial activities of anthocyanin-rich fractions partially purified from Hibiscus sabdariffa L." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/33492412732663227443.

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碩士<br>中州科技大學<br>保健食品系<br>103<br>The roselle (Hibiscus sabdariffa L.) is a annual shrub, related report showed that it has antioxidant, anti-glycation, anti-hyper- tension and prevent cardiovascular diseases. This study of raw material is Taiwan’s roselle, which is extracted useing different solvent as (30℃, 80℃, 90℃) water and (50%, 70%) ethanol, and is to evaluate and analyze its functional components content (polyphenols, total flavonoids, total anthocyanine, polysaccharides, organic acid) and (antioxidant, anti-glycation and inhibit bacterial growth capacity). Finally, we select the best of
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Tsz, Jing, and 歐靜慈. "The effects of liquid extract of Hibiscus Sabdariffa Linnaeus and protocatechuic acid in inhibiting apoptosis and migration." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/24900980566302105003.

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碩士<br>中山醫學大學<br>生化暨生物科技研究所<br>93<br>In developed countries, atherosclerosis and its complications are becoming a major cause of death. Several studies showed that free radical-mediated oxidation of low density lipoprotein leading to the production of oxidized LDL (OxLDL) is a key event in initiating endothelial cells proliferation and atherosclerosis plaque. Some natural antioxidants such as vitamin C, vitamin E, β-carotene have been revealed clearly to prevent the atherosclersis. As shown in previous studies, we found that the aqueous extract of Hibiscus Sabdariffa ( HSE ) and protocatechuic
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Lin, Chia-Liang, and 林佳良. "The study of inhibitory effect of Hibiscus sabdariffa leaf polyphenolic extracts on human prostate cancer cell growth." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/89321270133090593723.

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碩士<br>中山醫學大學<br>醫學檢驗暨生物技術學系碩士班<br>101<br>Many studies have shown that polyphenols prevent and inhibit the growth and metastasis of cancer cells. In previous study, Hibiscus sabdariffa leaf was demonstrated be rich in flavonoid, and possess anti-cancer potential. Recently, the data of our laboratory presented the evidence of H. sabdariffa leaf extract (HLE) as an apoptosis inducer in human prostate cancer LNCaP cells. Therefore, the object of the study was to examine the anticancer properties and molecular mechanisma of H. sabdariffa leaf polyphenolic extract (HLP) on LNCaP cells. Trypan blue a
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DIAZ, BANDERA DANIEL 350655, and BANDERA DANIEL DIAZ. "Cinética de liberación de compuestos antioxidantes del cáliz de jamaica (hibiscus sabdariffa l.) encapsulados en diferentes polímeros comestibles." Tesis de doctorado, 2013. http://hdl.handle.net/20.500.11799/63957.

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El cáliz de la jamaica contiene cantidades significativas de compuestos antioxidantes cuya ingesta habitual, a través de una infusión, previene y controla enfermedades crónico-degenerativas. Sin embargo, se ha documentado su baja biodisponibilidad en el cuerpo humano, debido a la inestabilidad de sus compuestos fenólicos durante su trayecto a través del tracto digestivo. En el presente trabajo se propuso preservar la actividad antioxidante de los compuestos fenólicos de este producto vegetal para lograr una mayor bioaccesibilidad empleando polímeros comestibles con dos tecnologías de encapsula
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卓玠宏. "Study on the relationships between polyphenols components and antioxidant activities in Hibiscus sabdariffa Linnaeu supercritical carbondioxide fluid extracts." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/42088723488179012609.

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碩士<br>建國科技大學<br>機械工程系暨製造科技研究所<br>99<br>Supercritical carbon dioxide (SC-CO2) can provide a benefit of lower temperature and high diffusion ability in nature product extraction process, not only preserved the thermo unstable but also keep the bioactivity of the extracts. Owing to this, we use supercritical carbon dioxide extract the caffeic acid (CA), a kind of polyphenol, from Roselle. Caffeic acid has abilities with antioxidant, radical catching and tyrosinase inhibition. We also use high performance liquid chromatography analysis the components differences between water extraction, alcohol e
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Hsu, Ho-Jung, and 許赫容. "Study on the Growth and Antioxidant Capacity of Roselle (Hibiscus sabdariffa L.) Calyx Inoculated with Arbuscular Mycorrhizal Fungi." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/wxsbqw.

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碩士<br>國立屏東科技大學<br>農園生產系所<br>105<br>The Roselle(Hibiscus sabdariffa L.) calyx is one of the most important medicinal plants in many parts of the world for its edible, medicinal uses as health foods. Roselle calyx can produce considerable amounts of antioxidant such as, polyphenols, flavonoids and anthocyanins. Arbuscular mycorrhizal fungi (AMF) are a beneficial microorganism in the terrestrial ecosystem , It can enhance the absorption of nutrients and improve the secondary metabolite accumulation in crops. In this study, these are six species of AMF, such as Glomus clarum, G. etunicatum, G. fa
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Chiu, Chun-Tang, and 邱軍棠. "Anti-Cancer Effect of Hibiscus sabdariffa Leaf Extract (HLP and HLE) on Human Melanoma and Human Prostate Cancer Cells." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/75635549768317812596.

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博士<br>中山醫學大學<br>生化暨生物科技研究所<br>103<br>Hibiscus sabdariffa leaf has been previously shown to possess hypoglycemic, hypolipidemic, and antioxidant effects, and induce tumor cell apoptosis. However, the molecular mechanisms involved in the anticancer activity of Hibiscus sabdariffa leaf polyphenolic extract (HLP) and H. sabdariffa leaf extract (HLE) are poorly understood. The object of the study was to examine the anti-cancer potential of HLP and HLE. First, HLP was exhibited to be rich in epicatechin gallate (ECG) and other polyphenols. Apoptotic and autophagic activities of HLP and ECG were furt
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Lee, Miao-Jane, and 李妙真. "Studies on the effects and mechanisms of protocatechuic acid and liquid extract of Hibiscus Sabdariffa Linnaeus in inhibiting atherosclerosis." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/11138746025545085672.

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博士<br>中山醫學大學<br>生物化學研究所<br>91<br>The natural antioxidants, such as Vit E, Vit C and beta-carotene, has been found to possess the ability to avoid LDL oxidation or reduce oxidized LDL (oxLDL) uptaken by macrophage; and furthermore, they were able to prevent the formation of atherosclerosis. In our previous studies, we explored that both protocatechuic acid (PCA) and the aqueous extract of its original plant, Hibiscus Sabdariffa (HSE), showed strong inhibitory effects on the negative charge increasing of protein moiety in oxLDL (lipogel electrophoresis) and on the lipid peroxidation of lipid moi
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Chen, Ching-Chun, and 陳靜君. "Hibiscus sabdariffa Polyphenol-rich extract (HPE) via regulate CD44 signal pathway to anti-metastatic effect on human colon cancer." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/13398182322361961282.

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碩士<br>中山醫學大學<br>生化暨生物科技研究所<br>101<br>In recent years, a natural plant extract an effective ingredient, thereby preventing or inhibiting the occurrence of cancer research has been the current trend. Roselle polyphenols Hibiscus sabdariffa Polyphenol-rich extract (HPE), one of the component in Roselle’s function, our previous studies indicate that HPE can effectively promote apoptosis on gastric cancer and colon cancer cell, the impact on tumor metastasis has not been clarified, so the next one probe into whether HPE inhibit cancer cell metastasis, and to explore the mechanism. We conducted MTT
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Lu, Shih-Shu, and 呂世樹. "The inhibitory effects of Hibiscus sabdariffa leaf extracts on UVB-induced expressions of matrix metalloproteinases in human dermal fibroblast cells." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/81012938051967269644.

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碩士<br>中山醫學大學<br>營養學研究所<br>101<br>Ultraviolet (UV) radiation is one of the main factors of skin photoaging. Long-term exposure to the UV leads to skin collagen breakdown, and generate wrinkles in the skin. Recently, it has been known that excessive matrix degradation was performed by UVB-induced matrix metalloproteinases (MMPs) secreted by fibroblasts cells during photoaging. Hibiscus sabdariffa leaf, the edible part of H. sabdariffa Linne (Malvaceae), is usually ignored and discarded. Previous studies have indicated H. sabdariffa leaf extract has antioxidant and anticancer activities. However,
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